Annotation of loncom/homework/functionplotresponse.pm, revision 1.98
1.1 www 1: # LearningOnline Network with CAPA
1.70 www 2: # Functionplot responses
1.1 www 3: #
1.98 ! www 4: # $Id: functionplotresponse.pm,v 1.97 2012/08/16 23:03:01 www Exp $
1.1 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::functionplotresponse;
30: use strict;
31: use Apache::response();
32: use Apache::lonlocal;
33: use Apache::lonnet;
1.65 www 34: use Apache::run;
1.85 www 35: use LONCAPA;
1.36 www 36:
1.1 www 37: BEGIN {
1.37 www 38: &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline',
1.85 www 39: 'plotobject','plotvector',
40: 'functionplotvectorrule','functionplotvectorsumrule',
1.93 www 41: 'drawvectorsum',
1.85 www 42: 'functionplotcustomrule',
1.37 www 43: 'functionplotrule','functionplotruleset',
44: 'functionplotelements'));
1.1 www 45: }
46:
1.5 www 47: #
1.96 www 48: # Use old Java or HTML5/Javascript for GeoGebra? Depends on browser!
49: # Return a true value if HTML5 should be used.
50:
51: sub useHTML5 {
1.97 www 52: return 1;
1.96 www 53: }
54:
1.98 ! www 55: #
! 56: # HTML5 version does not understand "_" in IDs
! 57: #
! 58: sub appid {
! 59: my ($id)=@_;
! 60: $id=~s/\_/rid/gs;
! 61: $id=~s/\W//gs;
! 62: return $id;
! 63: }
! 64:
! 65: #
1.96 www 66: # Routines to start the applet (Java) or the HTML5/JavaScript
67: #
1.5 www 68: # There can be a number of applets on a page, each called ggbApplet_$id,
69: # where $id is the "_"-concatenated part and responseid
70: #
71:
1.1 www 72: sub geogebra_startcode {
1.88 www 73: my ($id,$width,$height)=@_;
1.96 www 74: if (&useHTML5()) {
75: return &html5_geogebra_startcode(@_);
76: } else {
77: return &java_geogebra_startcode(@_).
78: &java_geogebra_code_param();
79: }
80: }
81:
82: sub geogebra_endcode {
1.97 www 83: if (&useHTML5()) {
84: return '';
85: } else {
1.96 www 86: return &java_geogebra_endcode();
87: }
88: }
89:
90: sub geogebra_default_parameters {
91: my ($id)=@_;
1.97 www 92: if (&useHTML5()) {
93: return '';
94: } else {
1.96 www 95: return &java_geogebra_default_parameters($id);
96: }
97: }
98: # === Java code
99:
100: sub java_geogebra_startcode {
101: my ($id,$width,$height)=@_;
1.98 ! www 102: my $appid=&appid($id);
1.88 www 103: $width=int(1.*$width);
104: $height=int(1.*$height);
105: unless ($width) { $width=700; }
106: unless ($height) { $height=400; }
1.1 www 107: return (<<ENDSTARTCODE);
1.98 ! www 108: <applet name="ggbApplet$appid" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
1.88 www 109: codebase="/adm/geogebra/" width="$width" height="$height" MAYSCRIPT>
1.1 www 110: <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>
111: ENDSTARTCODE
112: }
113:
1.96 www 114: sub java_geogebra_endcode {
1.2 www 115: return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n";
116: }
117:
1.96 www 118: sub java_geogebra_code_param {
119: return '<param name="ggbBase64" value="'.&geogebra_internal_program().'" />';
120: }
121:
122: # === HTML5 code
123:
124: sub html5_geogebra_startcode {
125: my ($id,$width,$height)=@_;
1.98 ! www 126: my $appid=&appid($id);
1.97 www 127: $width=int(1.*$width);
128: $height=int(1.*$height);
129: unless ($width) { $width=700; }
130: unless ($height) { $height=400; }
1.96 www 131: my $code=&geogebra_internal_program();
132: return (<<ENDSTARTCODE);
133: <article class="geogebraweb" data-param-enableLabelDrags="false" data-param-enableShiftDragZoom="false"
1.98 ! www 134: data-param-width="$width" data-param-height="$height" data-param-id="ggbApplet$appid"
1.96 www 135: data-param-ggbbase64="$code"></article>
136: ENDSTARTCODE
137: }
138:
1.5 www 139: #
140: # This is the internal GeoGebra bytecode which defines the spline functions
141: #
1.96 www 142: sub geogebra_internal_program {
143: return
144: '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';
1.2 www 145: }
146:
1.5 www 147: #
148: # The standard set of parameters inside <applet>
149: #
1.96 www 150: sub java_geogebra_default_parameters {
1.3 www 151: my ($id)=@_;
1.98 ! www 152: my $appid=&appid($id);
1.2 www 153: return(<<ENDDEFAULTPARAMETERS);
154: <param name="image" value="/adm/lonIcons/lonanim.gif" />
155: <param name="boxborder" value="false" />
156: <param name="centerimage" value="true" />
1.62 www 157: <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_algos.jar, geogebra_javascript.jar, geogebra_properties.jar, jlatexmath.jar, jlm_cyrillic.jar, jlm_greek.jar" />
1.69 www 158: <param name="cache_version" value="4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0" />
1.2 www 159: <param name="framePossible" value="false" />
160:
161: <param name="showResetIcon" value="false" />
162: <param name="showAnimationButton" value="false" />
163: <param name="enableRightClick" value="false" />
164: <param name="errorDialogsActive" value="true" />
165: <param name="enableLabelDrags" value="false" />
166: <param name="showMenuBar" value="false" />
167: <param name="showToolBar" value="false" />
168: <param name="showToolBarHelp" value="false" />
169: <param name="showAlgebraInput" value="false" />
170: <param name="enableShiftDragZoom" value="false" />
171: <param name="allowRescaling" value="false" />
172: <param name="enableLabelDrags" value="false" />
1.98 ! www 173: <param name="ggbOnInitParam" value="ggbApplet$appid" />
1.2 www 174: ENDDEFAULTPARAMETERS
1.1 www 175: }
176:
1.5 www 177: #
178: # This subroutine is called by LON-CAPA at </problem>
179: # Each applet on the page will call function ggbOnInit when it is done loading
180: # This function in turn will call the respective function registered by start_init_script
181: # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit
182: #
183:
1.3 www 184: sub init_script {
1.16 www 185: if ($#Apache::functionplotresponse::callscripts>=0) {
186: my $script='';
187: foreach my $id (@Apache::functionplotresponse::callscripts) {
1.98 ! www 188: $script.="if (param=='ggbApplet".&appid($id)."') { loaded_$id=true; }\n";
1.16 www 189: }
190: $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)).
1.52 www 191: ") { setTimeout('ggbInitAll()',200) }";
1.16 www 192: my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts));
1.96 www 193: my $html5init='';
194: if (&useHTML5()) {
195: $html5init=
196: '<script type="text/javascript" language="javascript" src="/adm/geogebra/html5/web/test42/web/web.nocache.js"></script>';
197: }
1.3 www 198: return (<<ENDGGBINIT);
1.97 www 199: $html5init
1.3 www 200: <script type="text/javascript">
201: // <![CDATA[
1.16 www 202: // Function that each applet will call when loaded
203: // It will pass "its" parameter
204: // Set flags for when an applet is loaded, wait till all are loaded, and then some
1.3 www 205: function ggbOnInit(param) {
1.16 www 206: $script
207: }
208: function ggbInitAll() {
1.17 www 209: $calls
1.3 www 210: }
211: // ]]>
212: </script>
213: ENDGGBINIT
214: }
215: }
216:
1.5 www 217: #
218: # Each Geogebra applet is supposed to call this when parameters change
1.10 www 219: # Changes the hidden fields on the web page
1.5 www 220: #
221: sub update_script {
222: my ($id)=@_;
1.98 ! www 223: my $appid=&appid($id);
1.5 www 224: return (<<ENDUPDATESCRIPT);
225: <script type="text/javascript">
226: // <![CDATA[
227: function updatePointCoordinates_$id(coordinateName) {
1.98 ! www 228: var x = document.ggbApplet$appid.getXcoord(coordinateName);
! 229: var y = document.ggbApplet$appid.getYcoord(coordinateName);
1.9 www 230: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x;
231: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y;
1.5 www 232: }
233: // ]]>
234: </script>
235: ENDUPDATESCRIPT
236: }
237:
238: #
239: # Register the above update-handler for a variable
240: #
241:
242: sub update_register {
243: my ($id,$variable)=@_;
1.98 ! www 244: my $appid=&appid($id);
! 245: return "document.ggbApplet$appid.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n";
1.6 www 246: }
247:
248: #
1.40 www 249: # Set a point coordinate variable
1.6 www 250: #
1.40 www 251: sub set_point_coordinate {
1.48 www 252: my ($id,$variable,$x,$y,$fixed)=@_;
1.98 ! www 253: my $appid=&appid($id);
1.48 www 254: my $mult=($fixed?'a*':'');
1.68 www 255: # Get rid of wild exponents, make sure it's a number
256: $x=1.*$x;
257: $y=1.*$y;
258: # GeoGebra does not understand "E"
259: $x=~s/[e|E]/\*10\^/;
260: $x=~s/\+//;
261: $y=~s/[e|E]/\*10\^/;
262: $y=~s/\+//;
1.6 www 263: return (<<ENDSETVARIABLE);
1.98 ! www 264: document.ggbApplet$appid.evalCommand("a=1");
! 265: document.ggbApplet$appid.evalCommand("$variable=$mult($x,$y)");
! 266: document.ggbApplet$appid.setLabelVisible("$variable",false);
1.6 www 267: ENDSETVARIABLE
268: }
269:
270: #
1.40 www 271: # Set a slope coordinate variable
272: #
273: sub set_slope_coordinate {
1.48 www 274: my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_;
1.98 ! www 275: my $appid=&appid($id);
1.40 www 276: my $xvariable=$variable.'x';
277: my $yvariable=$variable.'y';
278: my $domain=$xmax-$xmin;
279: my $range=$ymax-$ymin;
280: my $xinterval=$domain/100.;
281: my $yinterval=$range/200.;
1.48 www 282: my $mult=($fixed?'a*':'');
1.40 www 283: return (<<ENDSETSVARIABLE);
1.98 ! www 284: document.ggbApplet$appid.evalCommand("a=1");
! 285: document.ggbApplet$appid.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]");
! 286: document.ggbApplet$appid.setVisible("$xvariable", false);
! 287: document.ggbApplet$appid.evalCommand("$xvariable=$xrel");
! 288: document.ggbApplet$appid.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]");
! 289: document.ggbApplet$appid.setVisible("$yvariable", false);
! 290: document.ggbApplet$appid.evalCommand("$yvariable=$yrel");
! 291: document.ggbApplet$appid.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))");
! 292: document.ggbApplet$appid.setLabelVisible("$variable", false);
1.40 www 293: ENDSETSVARIABLE
294: }
295:
296: #
1.9 www 297: # Input field name for a coordinate variable
298: #
299:
300: sub field_name {
301: my ($id,$variable,$name)=@_;
302: return "HWVAL_$id\_$variable\_$name";
303: }
304:
305: #
306: # Generate an input field for a coordinate variable
307: #
308:
309: sub generate_input_field {
310: my ($id,$variable,$x,$y)=@_;
311: $Apache::functionplotresponse::inputfields.=
312: "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n".
313: "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n";
314: }
315:
316: #
1.40 www 317: # Initialize a new point coordinate variable at set a listener on it
1.6 www 318: #
1.40 www 319: sub new_point_coordinate {
1.48 www 320: my ($id,$variable,$x,$y,$fixed)=@_;
1.11 www 321: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
1.10 www 322: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
323: }
1.11 www 324: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) {
1.10 www 325: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
326: }
1.9 www 327: &generate_input_field($id,$variable,$x,$y);
1.48 www 328: return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable);
1.40 www 329: }
330:
331: #
332: # Initialize a new slope coordinate variable at set a listener on it
333: #
334: sub new_slope_coordinate {
1.48 www 335: my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
1.40 www 336: #
337: # $variable: name of the slope point
338: # $x, $y: coordinates of the slope point
339: # $pointname: name of the associated point point
340: # $xp $yp: coordinates of the point point
341: #
342: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
343: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
344: }
345: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) {
346: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
347: }
348: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) {
349: $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')};
350: }
351: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) {
352: $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')};
353: }
354:
355: &generate_input_field($id,$variable,$x,$y);
356: my $xrel=$x-$xp;
357: my $yrel=$y-$yp;
1.48 www 358: return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable);
1.5 www 359: }
360:
361: #
362: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem>
363: # It then starts the right headers
364: #
1.3 www 365: sub start_init_script {
366: my ($id)=@_;
1.16 www 367: # Add id to the list of ggbInit_$id functions that need to be called
368: push(@Apache::functionplotresponse::callscripts,$id);
1.5 www 369: # ... and open this function
1.3 www 370: return (<<ENDSTARTINIT);
371: <script type="text/javascript">
372: // <![CDATA[
1.5 www 373: // variable that will eventually be passed back to the server
374: var coordinateMap_$id = [];
1.16 www 375: // flag for not loaded yet
376: var loaded_$id=false;
1.5 www 377: // Init-function for applet
1.3 www 378: function ggbInit_$id() {
379: ENDSTARTINIT
380: }
381:
1.5 www 382: #
383: # This sets the axes inside ggbInit_$id
384: #
385:
1.4 www 386: sub axes_script {
387: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_;
1.98 ! www 388: my $appid=&appid($id);
1.4 www 389: return (<<ENDAXESSCRIPT);
390: // changes (xmin, xmax, ymin, ymax)
1.98 ! www 391: document.ggbApplet$appid.setCoordSystem($xmin,$xmax,$ymin,$ymax);
1.4 www 392:
393: // makes the (x,y) axis (in)visible
1.98 ! www 394: document.ggbApplet$appid.setAxesVisible($xvisible,$yvisible);
1.4 www 395: // makes the grid (in)visible
1.98 ! www 396: document.ggbApplet$appid.setGridVisible($gvisible);
1.4 www 397: ENDAXESSCRIPT
398: }
399:
1.14 www 400: sub axes_label {
1.45 www 401: my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_;
1.98 ! www 402: my $appid=&appid($id);
1.14 www 403: unless ($xlabel || $ylabel) { return ''; }
1.98 ! www 404: my $return='document.ggbApplet'.$appid.'.evalCommand("topRight=Corner[3]");';
1.14 www 405: if ($xlabel) {
1.45 www 406: if (($ymin<0) && ($ymax>0)) {
1.14 www 407: $return.=(<<ENDXAXISLABELSCRIPT);
1.98 ! www 408: document.ggbApplet$appid.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)");
! 409: document.ggbApplet$appid.setVisible("Xlabel",false);
! 410: document.ggbApplet$appid.evalCommand("Text[\\"$xlabel\\", Xlabel]");
1.14 www 411: ENDXAXISLABELSCRIPT
1.45 www 412: } else {
413: $return.=(<<ENDXOFFAXISLABEL);
1.98 ! www 414: document.ggbApplet$appid.evalCommand("LowerRight=Corner[2]");
! 415: document.ggbApplet$appid.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]");
1.45 www 416: ENDXOFFAXISLABEL
417: }
1.14 www 418: }
419: if ($ylabel) {
1.45 www 420: if (($xmin<0) && ($xmax>0)) {
1.14 www 421: $return.=(<<ENDYAXISLABELSCRIPT);
1.98 ! www 422: document.ggbApplet$appid.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)");
! 423: document.ggbApplet$appid.setVisible("Ylabel",false);
! 424: document.ggbApplet$appid.evalCommand("Text[\\"$ylabel\\", Ylabel]");
1.14 www 425: ENDYAXISLABELSCRIPT
1.45 www 426: } else {
427: $return.=(<<ENDYOFFAXISLABEL);
1.98 ! www 428: document.ggbApplet$appid.evalCommand("UpperLeft=Corner[4]");
! 429: document.ggbApplet$appid.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]");
1.45 www 430: ENDYOFFAXISLABEL
431: }
1.14 www 432: }
433: return $return;
434: }
435:
1.58 www 436: #
437: # Subroutine to produce background and answer plots
438: #
439:
1.4 www 440: sub plot_script {
1.47 www 441: my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_;
1.98 ! www 442: my $appid=&appid($id);
1.41 www 443: $label=~s/\W//g;
444: if (($label) && ($label!~/^[A-Za-z]/)) {
445: $label='C'.$label;
446: }
447: my $visible=0;
448: if ($label) {
449: $visible="1";
450: } else {
451: $Apache::functionplotresponse::counter++;
452: $label='C'.$Apache::functionplotresponse::counter;
453: }
1.46 www 454: my $rc=0;
455: my $gc=0;
456: my $bc=0;
457: if ($color) {
458: my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/);
459: $rc=hex($rh);
460: $gc=hex($gh);
461: $bc=hex($bh);
462: }
1.6 www 463: if ($fixed) {
1.98 ! www 464: return "document.ggbApplet$appid.evalCommand('$label=Function[$function,$xmin,$xmax]');\n".
! 465: ($visible?'':"document.ggbApplet$appid.setLabelVisible('$label', false);\n").
! 466: ($color?"document.ggbApplet$appid.setColor('$label',$rc,$gc,$bc);\n":'').
! 467: ($thickness?"document.ggbApplet$appid.setLineThickness('$label',$thickness);\n":'');
1.6 www 468: } else {
1.98 ! www 469: return "document.ggbApplet$appid.evalCommand('y=$function');\n";
1.6 www 470: }
1.4 www 471: }
472:
1.5 www 473: #
1.70 www 474: # Subroutine to produce objects
475: #
476:
477: sub plotobject_script {
478: my ($id,$label,$x,$y)=@_;
1.98 ! www 479: my $appid=&appid($id);
1.70 www 480: unless ($label) {
481: $Apache::functionplotresponse::counter++;
482: $label='O'.$Apache::functionplotresponse::counter;
483: }
1.77 www 484: &generate_input_field($id,$label,$x,$y);
1.98 ! www 485: return "document.ggbApplet$appid.evalCommand('a=1');\n".
! 486: "document.ggbApplet$appid.setVisible('a', false);\n".
! 487: "document.ggbApplet$appid.setLabelVisible('a', false);\n".
! 488: "document.ggbApplet$appid.evalCommand('$label=a*($x,$y)');\n".
! 489: "document.ggbApplet$appid.setVisible('$label', true);\n".
! 490: "document.ggbApplet$appid.setLabelVisible('$label', true);\n";
1.70 www 491: }
492:
493: #
494: # Subroutine to produce vectors
495: #
496:
497: sub plotvector_script {
1.92 www 498: my ($id,$label,$xs,$ys,$xe,$ye,$xmin,$xmax,$fixed)=@_;
1.98 ! www 499: my $appid=&appid($id);
1.70 www 500: unless ($label) {
501: $Apache::functionplotresponse::counter++;
502: $label='V'.$Apache::functionplotresponse::counter;
503: }
1.71 www 504: my $startlabel=$label.'Start';
505: my $endlabel=$label.'End';
506: my $pointlabel=$label.'Point';
1.72 www 507: my $pointx=2.*($xmax-$xmin)+$xmax;
1.71 www 508: my $anglelabel=$label.'Angle';
1.74 www 509: return
1.92 www 510: &new_point_coordinate($id,$startlabel,$xs,$ys,$fixed).
511: &new_point_coordinate($id,$endlabel,$xe,$ye,$fixed).
1.74 www 512: (<<ENDVECTOR);
1.98 ! www 513: document.ggbApplet$appid.evalCommand("$label=Vector[$startlabel,$endlabel]");
! 514: document.ggbApplet$appid.setLabelVisible("$label",true);
! 515: document.ggbApplet$appid.setLineThickness("$label",8);
! 516: document.ggbApplet$appid.evalCommand("$pointlabel=($pointx,y($startlabel))");
! 517: document.ggbApplet$appid.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]");
! 518: document.ggbApplet$appid.setLabelVisible("$anglelabel",true);
! 519: document.ggbApplet$appid.setLabelStyle("$anglelabel",VALUE=2);
1.70 www 520: ENDVECTOR
521: }
522:
523: #
1.58 www 524: # Answer spline display
525: #
526: # points: x,y,slope_x,slope_y
527:
528: sub answer_spline_script {
529: my ($id,@points)=@_;
1.98 ! www 530: my $appid=&appid($id);
1.58 www 531: my $order=int(($#points+1)/4);
532: if ($order<2) { $order=2; }
533: if ($order>8) { $order=8; }
534: $Apache::functionplotresponse::counter++;
1.60 www 535: my $label='CSpline'.$Apache::functionplotresponse::counter;
1.98 ! www 536: my $output='document.ggbApplet'.$appid.'.evalCommand("'.$label.'=Spline'.$order.'[';
1.59 www 537: for (my $i=0;$i<=$#points;$i+=4) {
538: $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),";
539: }
540: $output=~s/\,$//;
541: $output.=']");'."\n";
542: for (my $i=2; $i<2*$order; $i+=2) {
1.98 ! www 543: $output.='document.ggbApplet'.$appid.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n";
1.59 www 544: }
1.60 www 545: for (my $i=1; $i<2*$order; $i+=2) {
1.98 ! www 546: $output.='document.ggbApplet'.$appid.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n";
1.60 www 547: }
548:
1.59 www 549: return $output;
1.58 www 550: }
551:
552: #
1.7 www 553: # Subroutine that generates code for spline $label based on stored information
1.6 www 554: #
555:
556: sub generate_spline {
1.48 www 557: my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
1.98 ! www 558: my $appid=&appid($id);
1.6 www 559: my $result='';
1.7 www 560: my $order=$Apache::functionplotresponse::splineorder{$label};
561: my $x=$Apache::functionplotresponse::splineinitx{$label};
562: my $y=$Apache::functionplotresponse::splineinity{$label};
563: my $sx=$Apache::functionplotresponse::splinescalex{$label};
564: my $sy=$Apache::functionplotresponse::splinescaley{$label};
565: my @coords=();
566: foreach my $i (1..$order) {
1.48 www 567: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed);
1.40 www 568: my $xp=$x;
1.8 www 569: $x+=$sx/(2.*($order-1));
1.7 www 570: push(@coords,$label.'P'.$i);
1.48 www 571: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed);
1.8 www 572: $x+=$sx/(2.*($order-1));
1.7 www 573: push(@coords,$label.'S'.$i);
574: }
1.98 ! www 575: $result.='document.ggbApplet'.$appid.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n";
1.6 www 576: return $result;
577: }
1.70 www 578:
579: #
580: # Object
581: #
582:
583: sub start_plotobject {
584: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
585: my $result='';
586: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
587: my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval);
588: my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval);
589: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
590: $label=~s/\W//gs;
591: $label=ucfirst($label);
592: unless ($label) { $label="NewObject"; }
593: if ($target eq 'web') {
594: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
595: unless (defined($x)) { $x=$xmin; }
596: unless (defined($y)) { $y=$ymin; }
597: $result.=&plotobject_script($internalid,$label,$x,$y);
598: } elsif ($target eq 'edit') {
599: $result=&Apache::edit::tag_start($target,$token,'Plot Object').
600: &Apache::edit::text_arg('Label on Plot:','label',
601: $token,'16').
602: &Apache::edit::text_arg('x:','x',
603: $token,'8').
604: &Apache::edit::text_arg('y:','y',
605: $token,'8').
606: &Apache::edit::end_row();
607: } elsif ($target eq 'modified') {
1.76 www 608: $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
1.70 www 609: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y');
610: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
611: }
612: return $result;
613: }
614:
615: sub end_plotobject {
616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
617: my $result='';
618: if ($target eq 'edit') {
619: $result=&Apache::edit::end_table();
620: }
621: return $result;
622: }
623:
1.71 www 624: #
625: # Vector
626: #
627:
628: sub start_plotvector {
629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
630: my $result='';
631: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
632: my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval);
633: my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval);
634: my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval);
635: my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval);
636:
637: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
638: $label=~s/\W//gs;
639: $label=ucfirst($label);
640: unless ($label) { $label="NewVector"; }
1.95 www 641: if ($Apache::functionplotresponse::vectorlabels{$label}) {
642: &Apache::lonxml::warning(&mt('Vector labels must be unique: [_1]',$label));
643: }
644: $Apache::functionplotresponse::vectorlabels{$label}=1;
1.71 www 645: if ($target eq 'web') {
646: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
647: unless (defined($tailx)) { $tailx=$xmin; }
648: unless (defined($taily)) { $taily=$ymin; }
649: unless (defined($tipx)) { $tipx=$xmin; }
650: unless (defined($tipy)) { $tipy=$ymin; }
1.92 www 651: my $fixed=0;
652: if ((&Apache::response::show_answer()) || (&Apache::response::check_status()>=2)) { $fixed=1; }
653: $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax,$fixed);
1.71 www 654: } elsif ($target eq 'edit') {
655: $result=&Apache::edit::tag_start($target,$token,'Plot Vector').
656: &Apache::edit::text_arg('Label on Plot:','label',
657: $token,'16').
658: &Apache::edit::text_arg('Tail x:','tailx',
659: $token,'8').
660: &Apache::edit::text_arg('Tail y:','taily',
661: $token,'8').
662: &Apache::edit::text_arg('Tip x:','tipx',
663: $token,'8').
664: &Apache::edit::text_arg('Tip y:','tipy',
665: $token,'8').
666:
667: &Apache::edit::end_row();
668: } elsif ($target eq 'modified') {
1.76 www 669: $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
1.71 www 670: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy');
671: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
672: }
673: return $result;
674: }
675:
676: sub end_plotvector {
677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
678: my $result='';
679: if ($target eq 'edit') {
680: $result=&Apache::edit::end_table();
681: }
682: return $result;
683: }
684:
685:
1.93 www 686: #
687: # Vector sum - have GeoGebra draw a sum of specified vectors to help students draw
688: #
689:
690: sub start_drawvectorsum {
691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
692: my $result='';
693: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
1.98 ! www 694: my $internalappid=&appid($internalid);
1.93 www 695: my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval);
696: my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval);
1.94 www 697: my $showvalue=&Apache::lonxml::get_param('showvalue',$parstack,$safeeval);
1.93 www 698: my $vectorlist=&Apache::lonxml::get_param('vectorlist',$parstack,$safeeval);
699: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
700: $label=~s/\W//gs;
701: $label=ucfirst($label);
702: unless ($label) { $label="NewVector"; }
703: if ($target eq 'web') {
704: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
705: unless (defined($tailx)) { $tailx=$xmin; }
706: unless (defined($taily)) { $taily=$ymin; }
707: unless (defined($vectorlist)) { $vectorlist=''; }
708: my @vectors=split(/\,/,$vectorlist);
709: if ($#vectors>0) {
710: my @sumx=();
711: my @sumy=();
712: foreach my $thisvector (@vectors) {
713: $thisvector=~s/\W//gs;
714: $thisvector=ucfirst($thisvector);
715: unless ($thisvector) { next; }
1.95 www 716: unless ($Apache::functionplotresponse::vectorlabels{$thisvector}) {
717: &Apache::lonxml::warning(&mt('Vectors must be defined before using them for drawing vector sums: [_1]',$thisvector));
718: next;
719: }
1.93 www 720: my $vectorx=$thisvector.'X';
721: my $vectory=$thisvector.'Y';
722: $result.=(<<ENDADDVEC);
1.98 ! www 723: document.ggbApplet$internalappid.evalCommand("$vectorx=x($thisvector)");
! 724: document.ggbApplet$internalappid.evalCommand("$vectory=y($thisvector)");
! 725: document.ggbApplet$internalappid.evalCommand("Include$thisvector$label=Checkbox[]");
1.93 www 726: ENDADDVEC
727: push(@sumx,"If[Include$thisvector$label,$vectorx,0]");
728: push(@sumy,"If[Include$thisvector$label,$vectory,0]");
729: }
1.98 ! www 730: $result.="document.ggbApplet$internalappid.evalCommand(".'"'."xTot$label=".join('+',@sumx).'");'."\n";
! 731: $result.="document.ggbApplet$internalappid.evalCommand(".'"'."yTot$label=".join('+',@sumy).'");'."\n";
1.94 www 732: my $show=0;
733: if ($showvalue=~/yes/i) {
734: $show=1;
735: }
1.93 www 736: $result.=(<<ENDMAKEVECTOR);
1.98 ! www 737: document.ggbApplet$internalappid.evalCommand("$label=Vector[($tailx,$taily),($tailx+xTot$label,$taily+yTot$label)]");
! 738: document.ggbApplet$internalappid.setLabelVisible("$label",true);
! 739: document.ggbApplet$internalappid.setLineThickness("$label",8);
! 740: document.ggbApplet$internalappid.setColor("$label",255,0,0);
! 741: document.ggbApplet$internalappid.setLabelStyle("$label",VALUE=$show);
1.93 www 742: ENDMAKEVECTOR
743: }
744: } elsif ($target eq 'edit') {
745: $result=&Apache::edit::tag_start($target,$token,'Draw Vector Sum').
746: &Apache::edit::text_arg('Label on Plot:','label',
747: $token,'16').
748: &Apache::edit::text_arg('Tail x:','tailx',
749: $token,'8').
750: &Apache::edit::text_arg('Tail y:','taily',
1.94 www 751: $token,'8').
752: &Apache::edit::select_arg('Show Value:','showvalue',
753: ['yes','no'],$token).'<br />'.
1.93 www 754: &Apache::edit::text_arg('Vector List:','vectorlist',
755: $token,'40').
756: &Apache::edit::end_row();
757: } elsif ($target eq 'modified') {
758: $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
1.94 www 759: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','showvalue','vectorlist');
1.93 www 760: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
761: }
762: return $result;
763: }
764:
765:
766: sub end_drawvectorsum {
767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
768: my $result='';
769: if ($target eq 'edit') {
770: $result=&Apache::edit::end_table();
771: }
772: return $result;
773: }
774:
775:
1.70 www 776:
1.6 www 777: #
778: # <backgroundplot function="..." fixed="yes/no" />
1.5 www 779: #
1.4 www 780: sub start_backgroundplot {
781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
782: my $result='';
783: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
784: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);
1.47 www 785: my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval);
786: my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval);
1.41 www 787: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
1.46 www 788: my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval);
789: $color=~s/[^a-fA-F0-9]//gs;
790: unless (length($color)==6) { $color=''; }
1.6 www 791: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0);
792:
1.4 www 793: unless ($function) { $function="0"; }
794: if ($target eq 'web') {
1.41 www 795: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
1.47 www 796: unless (defined($xinitial)) { $xinitial=$xmin; }
797: unless (defined($xfinal)) { $xfinal=$xmax; }
798: $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal);
1.13 www 799: } elsif ($target eq 'edit') {
800: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot').
801: &Apache::edit::text_arg('Function:','function',
802: $token,'16').
1.47 www 803: &Apache::edit::text_arg('Initial x-value (optional):','xinitial',
804: $token,'8').
805: &Apache::edit::text_arg('Final x-value (optional):','xfinal',
806: $token,'8').
1.41 www 807: &Apache::edit::text_arg('Label on Plot:','label',
808: $token,'8').
1.46 www 809: &Apache::edit::text_arg('Color (hex code):','color',
810: $token,'8').
1.13 www 811: &Apache::edit::select_arg('Fixed location:','fixed',
812: ['yes','no'],$token).
813: &Apache::edit::end_row();
814: } elsif ($target eq 'modified') {
815: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.47 www 816: $safeeval,'function','label','xinitial','xfinal','color','fixed');
1.13 www 817: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
818: }
819: return $result;
1.4 www 820: }
821:
822: sub end_backgroundplot {
1.13 www 823: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
824: my $result='';
825: if ($target eq 'edit') {
826: $result=&Apache::edit::end_table();
827: }
828: return $result;
1.6 www 829: }
830:
831: #
1.25 www 832: # <functionplotrule ... />
1.12 www 833: #
1.25 www 834: sub start_functionplotrule {
1.12 www 835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
836: my $result='';
1.24 www 837: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
838: $Apache::functionplotresponse::counter++;
839: if ($label=~/\W/) {
1.25 www 840: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
1.24 www 841: }
842: $label=~s/\W//gs;
843: unless ($label) {
844: $label='R'.$Apache::functionplotresponse::counter;
845: } else {
846: $label='R'.$label;
847: }
848:
849: if ($target eq 'grade') {
850: # Simply remember - in order - for later
1.25 www 851: my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval);
852: my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval);
1.24 www 853: if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) {
1.25 www 854: &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.'));
1.24 www 855: }
856: $beginninglabel=~s/\W//gs;
857: $endinglabel=~s/\W//gs;
858: my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval);
859: $relationship=~s/\W//gs;
860: $relationship=lc($relationship);
861: unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) {
1.25 www 862: &Apache::lonxml::warning(&mt('Rule relationship not defined.'));
1.24 www 863: $relationship='eq';
864: }
1.35 www 865: my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval);
1.42 www 866: unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) {
1.25 www 867: &Apache::lonxml::warning(&mt('Rule derivative not defined.'));
1.24 www 868: $derivative=0;
869: }
1.25 www 870: push(@Apache::functionplotresponse::functionplotrules,join(':',(
1.24 www 871: $label,
872: $derivative,
1.25 www 873: &Apache::lonxml::get_param('xinitial',$parstack,$safeeval),
1.24 www 874: $beginninglabel,
1.25 www 875: &Apache::lonxml::get_param('xfinal',$parstack,$safeeval),
1.24 www 876: $endinglabel,
1.35 www 877: &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval),
878: &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval),
1.24 www 879: $relationship,
1.33 www 880: &Apache::lonxml::get_param('value',$parstack,$safeeval),
881: &Apache::lonxml::get_param('percenterror',$parstack,$safeeval)
1.24 www 882: )));
883: } elsif ($target eq 'edit') {
1.75 www 884: $result=&Apache::edit::tag_start($target,$token,'Function Plot Graph Rule').
1.36 www 885: &Apache::edit::text_arg('Index/Name:','index',
886: $token,'10').' '.
1.35 www 887: &Apache::edit::select_arg(&mt('Function:'),'derivativeorder',
1.29 www 888: [['0','Function itself'],
889: ['1','First derivative'],
1.42 www 890: ['2','Second derivative'],
891: ['-1','Integral']],$token).'<br />'.
1.44 www 892: &Apache::edit::text_arg('Initial x-value:','xinitial',
1.35 www 893: $token,'8').
1.44 www 894: &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel',
895: [['start','Start of Plot'],
896: ['end','End of Plot']],$token,'8').'<br />'.
1.30 www 897:
1.44 www 898: &Apache::edit::text_arg('Final x-value (optional):','xfinal',
1.35 www 899: $token,'8').
1.44 www 900: &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel',
1.32 www 901: [['end','End of Plot']],$token,'8').'<br />'.
1.44 www 902: &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength',
1.35 www 903: $token,'8').
1.44 www 904: &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength',
1.35 www 905: $token,'8').'<br />'.
1.38 www 906: &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship',
1.29 www 907: [['eq','equal'],
908: ['ne','not equal'],
909: ['ge','greater than or equal'],
910: ['gt','greater than'],
911: ['lt','less than'],
912: ['le','less than or equal']],$token).
913: $result.= &Apache::edit::select_or_text_arg('Value:','value',
1.65 www 914: [['undef','not defined']],$token,'30').
1.29 www 915: &Apache::edit::text_arg('Percent error:','percenterror',
1.35 www 916: $token,'8').
1.29 www 917: &Apache::edit::end_row();
918: } elsif ($target eq 'modified') {
1.54 www 919: if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) {
1.53 www 920: $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}='';
921: }
1.54 www 922: if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) {
1.53 www 923: $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}='';
924: }
1.29 www 925: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.35 www 926: $safeeval,'index','derivativeorder',
927: 'xinitial','xinitiallabel','xfinal','xfinallabel',
928: 'minimumlength','maximumlength',
929: 'relationship','value','percenterror');
1.29 www 930: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
1.13 www 931: }
1.12 www 932: return $result;
933: }
934:
1.25 www 935: sub end_functionplotrule {
1.13 www 936: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
937: my $result='';
938: if ($target eq 'edit') {
939: $result=&Apache::edit::end_table();
940: }
941: return $result;
1.12 www 942: }
943:
944:
945: #
1.75 www 946: # <functionplotvectorrule ... />
947: #
948: sub start_functionplotvectorrule {
949: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
950: my $result='';
951: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
952: $Apache::functionplotresponse::counter++;
953: if ($label=~/\W/) {
954: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
955: }
956: $label=~s/\W//gs;
957: unless ($label) {
1.79 www 958: $label='R'.$Apache::functionplotresponse::counter;
1.75 www 959: } else {
1.79 www 960: $label='R'.$label;
1.75 www 961: }
962:
963: if ($target eq 'grade') {
964: # Simply remember - in order - for later
1.77 www 965:
966: my $id=$Apache::inputtags::response[-1];
967: my $partid=$Apache::inputtags::part;
968: my $internalid = $partid.'_'.$id;
969:
1.75 www 970: my $vector=&Apache::lonxml::get_param('vector',$parstack,$safeeval);
971: $vector=~s/\W//gs;
972: $vector=ucfirst($vector);
1.76 www 973:
1.75 www 974: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
975: $label,
1.76 www 976: 'vector',
1.77 www 977: $internalid,
1.75 www 978: $vector,
1.87 www 979: &Apache::lonxml::get_param('attachpoint',$parstack,$safeeval),
980: &Apache::lonxml::get_param('notattachpoint',$parstack,$safeeval),
981: &Apache::lonxml::get_param('tailpoint',$parstack,$safeeval),
982: &Apache::lonxml::get_param('tippoint',$parstack,$safeeval),
983: &Apache::lonxml::get_param('nottailpoint',$parstack,$safeeval),
984: &Apache::lonxml::get_param('nottippoint',$parstack,$safeeval),
1.75 www 985: &Apache::lonxml::get_param('length',$parstack,$safeeval),
986: &Apache::lonxml::get_param('angle',$parstack,$safeeval),
1.79 www 987: &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval),
988: &Apache::lonxml::get_param('angleerror',$parstack,$safeeval),
1.75 www 989: )));
990: } elsif ($target eq 'edit') {
991: $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Rule').
992: &Apache::edit::text_arg('Index/Name:','index',
993: $token,'10').' '.
994: &Apache::edit::text_arg('Vector:','vector',
995: $token,'16').'<br />'.
1.76 www 996: &Apache::edit::text_arg('Attached to object:','attachpoint',
997: $token,'16').
998: &Apache::edit::text_arg('Not attached to object:','notattachpoint',
999: $token,'16').'<br />'.
1.75 www 1000: &Apache::edit::text_arg('Tail attached to object:','tailpoint',
1001: $token,'16').
1002: &Apache::edit::text_arg('Tip attached to object:','tippoint',
1003: $token,'16').
1004: &Apache::edit::text_arg('Tail not attached to object:','nottailpoint',
1005: $token,'16').
1006: &Apache::edit::text_arg('Tip not attached to object:','nottippoint',
1007: $token,'16').'<br />'.
1008: &Apache::edit::text_arg('Length:','length',
1.84 www 1009: $token,'30').
1010: &Apache::edit::text_arg('Absolute error length:','lengtherror',
1011: $token,'8').'<br />'.
1.75 www 1012: &Apache::edit::text_arg('Angle:','angle',
1.84 www 1013: $token,'30').
1.79 www 1014: &Apache::edit::text_arg('Absolute error angle:','angleerror',
1.75 www 1015: $token,'8').
1016: &Apache::edit::end_row();
1017: } elsif ($target eq 'modified') {
1.76 www 1018: $env{'form.'.&Apache::edit::html_element_name('vector')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('vector')});
1.75 www 1019: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.76 www 1020: $safeeval,'index','vector','attachpoint','notattachpoint',
1.75 www 1021: 'tailpoint','tippoint','nottailpoint','nottipoint',
1022: 'length','angle',
1.79 www 1023: 'lengtherror','angleerror');
1.75 www 1024: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
1025: }
1026: return $result;
1027: }
1028:
1029: sub end_functionplotvectorrule {
1030: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1031: my $result='';
1032: if ($target eq 'edit') {
1033: $result=&Apache::edit::end_table();
1034: }
1035: return $result;
1036: }
1037:
1.76 www 1038: #
1039: # <functionplotvectorsumrule ... />
1040: #
1041: sub start_functionplotvectorsumrule {
1042: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1043: my $result='';
1044: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
1045: $Apache::functionplotresponse::counter++;
1046: if ($label=~/\W/) {
1047: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
1048: }
1049: $label=~s/\W//gs;
1050: unless ($label) {
1.79 www 1051: $label='R'.$Apache::functionplotresponse::counter;
1.76 www 1052: } else {
1.79 www 1053: $label='R'.$label;
1.76 www 1054: }
1055: if ($target eq 'grade') {
1056: # Simply remember - in order - for later
1.77 www 1057: my $id=$Apache::inputtags::response[-1];
1058: my $partid=$Apache::inputtags::part;
1059: my $internalid = $partid.'_'.$id;
1.82 www 1060: my $vectors=&Apache::lonxml::get_param('vectors',$parstack,$safeeval);
1.76 www 1061: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
1062: $label,
1063: 'sum',
1.77 www 1064: $internalid,
1.82 www 1065: $vectors,
1.76 www 1066: &Apache::lonxml::get_param('length',$parstack,$safeeval),
1067: &Apache::lonxml::get_param('angle',$parstack,$safeeval),
1.80 www 1068: &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval),
1.79 www 1069: &Apache::lonxml::get_param('angleerror',$parstack,$safeeval),
1.76 www 1070: )));
1071: } elsif ($target eq 'edit') {
1072: $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Sum Rule').
1073: &Apache::edit::text_arg('Index/Name:','index',
1074: $token,'10').' '.
1.82 www 1075: &Apache::edit::text_arg('Comma-separated list of vectors:','vectors',
1076: $token,'30').'<br />'.
1.76 www 1077: &Apache::edit::text_arg('Sum vector length:','length',
1.84 www 1078: $token,'30').
1079: &Apache::edit::text_arg('Absolute error length:','lengtherror',
1080: $token,'8').'<br />'.
1.76 www 1081: &Apache::edit::text_arg('Sum vector angle:','angle',
1.84 www 1082: $token,'30').
1083: &Apache::edit::text_arg('Absolute error angle:','angleerror',
1.76 www 1084: $token,'8').
1085: &Apache::edit::end_row();
1.85 www 1086: } elsif ($target eq 'modified') {
1087: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1088: $safeeval,'index','vectors',
1089: 'length','angle',
1090: 'lengtherror','angleerror');
1091: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
1.76 www 1092: }
1093: return $result;
1094: }
1.75 www 1095:
1.76 www 1096: sub end_functionplotvectorsumrule {
1097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1098: my $result='';
1099: if ($target eq 'edit') {
1100: $result=&Apache::edit::end_table();
1101: }
1102: return $result;
1103: }
1.75 www 1104:
1105: #
1.85 www 1106: # <functionplotcustom ... />
1107: #
1108: sub start_functionplotcustomrule {
1109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1110: my $result='';
1111: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
1112: $Apache::functionplotresponse::counter++;
1113: if ($label=~/\W/) {
1114: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
1115: }
1116: $label=~s/\W//gs;
1117: unless ($label) {
1118: $label='R'.$Apache::functionplotresponse::counter;
1119: } else {
1120: $label='R'.$label;
1121: }
1122: &Apache::lonxml::register('Apache::response',('answer'));
1123: if ($target eq 'edit') {
1124: $result=&Apache::edit::tag_start($target,$token,'Function Plot Custom Rule').
1125: &Apache::edit::text_arg('Index/Name:','index',$token,'10').
1126: &Apache::edit::end_row();
1127: } elsif ($target eq 'modified') {
1128: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'index');
1129: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
1130: }
1131: return $result;
1132: }
1133:
1134: sub end_functionplotcustomrule {
1135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1136: my $result='';
1137: if ($target eq 'edit') {
1138: $result=&Apache::edit::end_table();
1139: } elsif ($target eq 'grade') {
1140: # Simply remember - in order - for later
1141: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
1142: $Apache::functionplotresponse::counter++;
1143: if ($label=~/\W/) {
1144: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
1145: }
1146: $label=~s/\W//gs;
1147: unless ($label) {
1148: $label='R'.$Apache::functionplotresponse::counter;
1149: } else {
1150: $label='R'.$label;
1151: }
1152: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
1153: $label,
1154: 'custom',
1155: &escape($Apache::response::custom_answer[-1])
1156: )));
1157: }
1158: &Apache::lonxml::deregister('Apache::response',('answer'));
1159: return $result;
1160: }
1161:
1162:
1163:
1164: #
1.23 www 1165: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." />
1.6 www 1166: #
1167: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them
1168: #
1169: sub start_spline {
1170: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.13 www 1171: my $result='';
1172: if ($target eq 'web') {
1.23 www 1173: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
1.13 www 1174: $Apache::functionplotresponse::counter++;
1175: if ($label=~/\W/) {
1.23 www 1176: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.'));
1.13 www 1177: }
1178: $label=~s/\W//gs;
1.23 www 1179: unless ($label) {
1180: $label='S'.$Apache::functionplotresponse::counter;
1181: } else {
1182: $label='S'.$label;
1183: }
1.13 www 1184: if ($Apache::functionplotresponse::splineorder{$label}) {
1.23 www 1185: &Apache::lonxml::error(&mt('Spline indices must be unique.'));
1.13 www 1186: }
1187:
1188: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval);
1189: if ($order<2) { $order=2; }
1190: if ($order>8) { $order=8; }
1191: $Apache::functionplotresponse::splineorder{$label}=$order;
1192:
1193: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval);
1194: unless ($x) { $x=0; }
1195: $Apache::functionplotresponse::splineinitx{$label}=$x;
1196:
1197: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval);
1198: unless ($y) { $y=0; }
1199: $Apache::functionplotresponse::splineinity{$label}=$y;
1200:
1201: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval);
1202: unless ($sx) { $sx=$order; }
1203: $Apache::functionplotresponse::splinescalex{$label}=$sx;
1204:
1205: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval);
1206: unless ($sy) { $sy=2; }
1207: $Apache::functionplotresponse::splinescaley{$label}=$sy;
1208: } elsif ($target eq 'edit') {
1209: $result=&Apache::edit::tag_start($target,$token,'Spline').
1.23 www 1210: &Apache::edit::text_arg('Index:','index',
1.14 www 1211: $token,'4').' '.
1.13 www 1212: &Apache::edit::select_arg('Order:','order',
1.44 www 1213: ['2','3','4','5','6','7','8'],$token).' '.
1.13 www 1214: &Apache::edit::text_arg('Initial x-value:','initx',
1.14 www 1215: $token,'4').' '.
1.13 www 1216: &Apache::edit::text_arg('Initial y-value:','inity',
1.14 www 1217: $token,'4').' '.
1.13 www 1218: &Apache::edit::text_arg('Scale x:','scalex',
1.14 www 1219: $token,'4').' '.
1.13 www 1220: &Apache::edit::text_arg('Scale y:','scaley',
1221: $token,'4').
1222: &Apache::edit::end_row();
1223: } elsif ($target eq 'modified') {
1224: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.23 www 1225: $safeeval,'index','order','initx','inity',
1.13 www 1226: 'scalex','scaley');
1227: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
1228: }
1229: return $result;
1.6 www 1230: }
1231:
1232: sub end_spline {
1.13 www 1233: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1234: my $result='';
1235: if ($target eq 'edit') {
1236: $result=&Apache::edit::end_table();
1237: }
1238: return $result;
1.4 www 1239: }
1240:
1.3 www 1241: sub end_init_script {
1242: return (<<ENDENDINIT);
1243: }
1244: // ]]>
1245: </script>
1246: ENDENDINIT
1247: }
1248:
1.10 www 1249: #
1250: # Storing and restoring spline coordinates from part answers
1251: #
1252: sub decode_previous_answer {
1253: my ($answer)=@_;
1254: foreach my $coordinate (split(/\,/,$answer)) {
1255: my ($key,$value)=split(/\=/,$coordinate);
1256: $Apache::functionplotresponse::previous{$key}=$value;
1257: }
1258: }
1259:
1260: sub get_answer_from_form_fields {
1261: my ($id)=@_;
1262: my $answer='';
1263: my %coords=();
1264: foreach my $field (keys(%env)) {
1265: if ($field=~/^form\.HWVAL\_$id/) {
1266: $field=~/^form\.(.*)$/;
1267: $coords{$1}=$env{$field};
1268: }
1269: }
1270: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords))));
1271: return ($answer,%coords);
1272: }
1273:
1.15 www 1274: #
1275: # The following functions calculate the cubic-hermite splines server-side
1276: #
1277:
1278: sub cubic_hermite {
1279: my ($t,$p1,$s1,$p2,$s2)=@_;
1.42 www 1280: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+
1281: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2);
1.15 www 1282: }
1283:
1284: #
1285: # d/dt(...)
1286: #
1287:
1288: sub ddt_cubic_hermite {
1289: my ($t,$p1,$s1,$p2,$s2)=@_;
1.42 www 1290: return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+
1291: (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2);
1.15 www 1292: }
1293:
1294: #
1295: # d^2/dt^2(...)
1296: #
1297:
1298: sub d2dt2_cubic_hermite {
1299: my ($t,$p1,$s1,$p2,$s2)=@_;
1.42 www 1300: return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+
1301: (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2);
1.15 www 1302: }
1303:
1304: #
1.18 www 1305: # Array index calculation
1306: #
1307: sub array_index {
1308: my ($xmin,$xmax,$x)=@_;
1.38 www 1309: if ($x ne '') {
1310: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5);
1311: } else {
1312: return undef;
1313: }
1.20 www 1314: }
1315:
1316: #
1.18 www 1317: # Populate the arrays
1318: #
1319:
1320: sub populate_arrays {
1.64 www 1321: my ($id,$xmin,$xmax,$ymin,$ymax)=@_;
1.26 www 1322: for (my $i=0; $i<=400; $i++) {
1.35 www 1323: $Apache::functionplotresponse::actualxval[$i]=undef;
1.19 www 1324: $Apache::functionplotresponse::func[$i]=undef;
1.22 www 1325: $Apache::functionplotresponse::dfuncdx[$i]=undef;
1.19 www 1326: $Apache::functionplotresponse::d2funcd2x[$i]=undef;
1.18 www 1327: }
1.19 www 1328: unless ($xmax>$xmin) { return 'no_func'; }
1.18 www 1329: # Run over all splines in response
1330: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) {
1.19 www 1331: my $xiold=-1;
1.18 www 1332: # Run over all points in spline
1.19 www 1333: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) {
1.18 www 1334: my $ni=$i+1;
1335: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'},
1336: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'},
1337: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'},
1338: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'});
1339: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'},
1340: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'},
1341: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'},
1342: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'});
1343: # Run in small steps over spline parameter
1.26 www 1344: for (my $t=0; $t<=1; $t+=0.0001) {
1.35 www 1345: my $xreal=&cubic_hermite($t,@xparms);
1346: my $xi=&array_index($xmin,$xmax,$xreal);
1.19 www 1347: if ($xi<$xiold) { return 'no_func'; }
1.26 www 1348: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) {
1.18 www 1349: $xiold=$xi;
1.35 www 1350: $Apache::functionplotresponse::actualxval[$xi]=$xreal;
1.22 www 1351: # Function value
1.30 www 1352: my $funcval=&cubic_hermite($t,@yparms);
1.64 www 1353:
1354: # Do we already have a value for this point, and is it different from the new one?
1355: if ((defined($Apache::functionplotresponse::func[$xi])) &&
1356: (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) {
1357: return 'no_func';
1358: }
1359: # Okay, remember the new point
1.30 www 1360: $Apache::functionplotresponse::func[$xi]=$funcval;
1.64 www 1361:
1.30 www 1362: if (defined($funcval)) {
1363: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) {
1364: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi;
1365: }
1366: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) {
1367: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi;
1368: }
1369: }
1.28 www 1370: # Chain rule
1.22 www 1371: # dy/dx=dy/dt/(dx/dt)
1372: my $dxdt=&ddt_cubic_hermite($t,@xparms);
1373: if ($dxdt) {
1374: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt;
1.34 www 1375: # Second derivative
1.28 www 1376: $Apache::functionplotresponse::d2funcdx2[$xi]=
1.34 www 1377: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/
1378: ($dxdt*$dxdt*$dxdt);
1.22 www 1379: }
1.18 www 1380: }
1381: }
1382: }
1383: }
1384: }
1385:
1386: #
1.37 www 1387: # Implementation of <functionplotresponse>
1.15 www 1388: #
1389:
1.1 www 1390: sub start_functionplotresponse {
1391: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1392: my $result='';
1.6 www 1393: # To remember the splines - somehow, they need to come last
1394: undef %Apache::functionplotresponse::splineorder;
1395: undef %Apache::functionplotresponse::splineinitx;
1396: undef %Apache::functionplotresponse::splineinity;
1397: undef %Apache::functionplotresponse::splinescalex;
1398: undef %Apache::functionplotresponse::splinescaley;
1.10 www 1399: # Remember input fields, etc
1400: undef %Apache::functionplotresponse::previous;
1.9 www 1401: $Apache::functionplotresponse::inputfields='';
1.6 www 1402: $Apache::functionplotresponse::counter=0;
1.95 www 1403: # Remember vectors
1404: undef %Apache::functionplotresponse::vectorlabels;
1.24 www 1405: # Remember rules
1.25 www 1406: undef @Apache::functionplotresponse::functionplotrules;
1.75 www 1407: undef @Apache::functionplotresponse::functionplotvectorrules;
1.37 www 1408: # Remember failed rules
1409: if ($target eq 'grade') {
1410: undef @Apache::functionplotresponse::failedrules;
1411: }
1412: # Delete previous awards
1413: undef $Apache::functionplotresponse::awarddetail;
1.10 www 1414: # Part and ID
1415: my $partid=$Apache::inputtags::part;
1416: my $id=&Apache::response::start_response($parstack,$safeeval);
1.6 www 1417: # Internal ID to mark the applet and its coordinates
1.10 www 1418: my $internalid = $partid.'_'.$id;
1419: # Previous answer
1420: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"});
1421:
1.6 www 1422: # Parameters of <functionplotresponse>
1.41 www 1423: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval);
1.6 www 1424: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
1425: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
1426: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
1.14 www 1427: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval);
1428: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval);
1.12 www 1429: if ($target eq 'edit') {
1430: $result.=&Apache::edit::start_table($token)
1431: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>'
1432: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.37 www 1433: .&Apache::edit::deletelist($target,$token).' '
1.50 www 1434: .&Apache::edit::insertlist($target,$token).' '
1435: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses')
1.12 www 1436: .'</span></td>'
1437: ."<td> "
1438: .&Apache::edit::end_row()
1439: .&Apache::edit::start_spanning_row()
1440: ."\n";
1.88 www 1441: $result.=&Apache::edit::text_arg('Width (pixels):','width',
1442: $token,'6').' '.
1443: &Apache::edit::text_arg('Height (pixels):','height',
1444: $token,'6').'<br />'.
1445: &Apache::edit::text_arg('Label x-axis:','xlabel',
1.14 www 1446: $token,'6').' '.
1447: &Apache::edit::text_arg('Minimum x-value:','xmin',
1448: $token,'4').' '.
1.12 www 1449: &Apache::edit::text_arg('Maximum x-value:','xmax',
1.14 www 1450: $token,'4').' '.
1.12 www 1451: &Apache::edit::select_arg('x-axis visible:','xaxisvisible',
1.32 www 1452: ['yes','no'],$token).'<br />'.
1.14 www 1453: &Apache::edit::text_arg('Label y-axis:','ylabel',
1454: $token,'6').' '.
1.12 www 1455: &Apache::edit::text_arg('Minimum y-value:','ymin',
1.14 www 1456: $token,'4').' '.
1.12 www 1457: &Apache::edit::text_arg('Maximum y-value:','ymax',
1.14 www 1458: $token,'4').' '.
1.12 www 1459: &Apache::edit::select_arg('y-axis visible:','yaxisvisible',
1.32 www 1460: ['yes','no'],$token).'<br />'.
1.12 www 1461: &Apache::edit::select_arg('Grid visible:','gridvisible',
1.47 www 1462: ['yes','no'],$token).'<br />'.
1.58 www 1463: &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):',
1.63 raeburn 1464: 'answerdisplay',$token,'50').
1.12 www 1465: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1466: } elsif ($target eq 'modified') {
1467: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.88 www 1468: $safeeval,'width','height','xlabel','xmin','xmax','ylabel','ymin','ymax',
1.47 www 1469: 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay');
1.12 www 1470: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.3 www 1471:
1.12 www 1472: } elsif ($target eq 'meta') {
1.10 www 1473: $result=&Apache::response::meta_package_write('functionplotresponse');
1.35 www 1474: } elsif (($target eq 'answer') &&
1475: ($env{'form.answer_output_mode'} ne 'tex') &&
1476: ($Apache::lonhomework::viewgrades == 'F')) {
1477: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
1478: $uname =~s/\W//g;
1479: $udom =~s/\W//g;
1480: my $function_name =
1481: join('_','LONCAPA_scriptvars',$uname,$udom,
1482: $env{'form.counter'},$Apache::lonxml::curdepth);
1.89 www 1483: &Apache::lonxml::add_script_result(
1.90 www 1484: &Apache::loncommon::modal_adhoc_window($function_name,700,500,
1485: '<pre>'.$Apache::functionplotresponse::ruleslog.'</pre>',
1486: &mt('Rules Log'))."<br />");
1487: }
1.1 www 1488: return $result;
1489: }
1490:
1.25 www 1491: sub compare_rel {
1.26 www 1492: my ($relationship,$value,$realval,$tol)=@_;
1.36 www 1493: # is the real value undefined?
1.26 www 1494: unless (defined($realval)) {
1.36 www 1495: # the real value is not defined
1.26 www 1496: if ($relationship eq 'eq') {
1497: if ($value eq 'undef') {
1498: return 1;
1499: } else {
1500: return 0;
1501: }
1502: } elsif ($relationship eq 'ne') {
1503: if ($value eq 'undef') {
1504: return 0;
1505: } else {
1506: return 1;
1507: }
1508: } else {
1509: return 0;
1510: }
1511: }
1512:
1.36 www 1513: # is the expected value undefined?
1514: if ($value eq 'undef') {
1515: # but by now we know that the real value is defined
1516: return 0;
1517: }
1518:
1519: # both are defined.
1.26 www 1520: if ($relationship eq 'gt') {
1521: return ($realval>$value);
1522: } elsif ($relationship eq 'ge') {
1523: return ($realval>$value-$tol);
1524: } elsif ($relationship eq 'lt') {
1525: return ($realval<$value);
1526: } elsif ($relationship eq 'le') {
1527: return ($realval<$value+$tol);
1528: } elsif ($relationship eq 'ne') {
1529: return (abs($value-$realval)>$tol);
1530: } else {
1531: return (abs($value-$realval)<$tol);
1532: }
1.25 www 1533: return 0;
1534: }
1535:
1.35 www 1536: sub addlog {
1537: my ($text)=@_;
1.67 www 1538: $text=~s/\'/\\\'/g;
1.35 www 1539: $Apache::functionplotresponse::ruleslog.=$text.'<br />';
1540: }
1541:
1542: sub actualval {
1543: my ($i,$xmin,$xmax)=@_;
1544: return $xmin+$i/400.*($xmax-$xmin);
1545: }
1.65 www 1546:
1.66 www 1547: sub fpr_val {
1548: my ($arg)=@_;
1549: return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg},
1550: $Apache::functionplotresponse::fpr_xmin,
1551: $Apache::functionplotresponse::fpr_xmax);
1552: }
1553:
1.65 www 1554: sub fpr_f {
1555: my ($arg)=@_;
1556: return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin,
1557: $Apache::functionplotresponse::fpr_xmax,
1558: $arg)];
1559: }
1560:
1561: sub fpr_dfdx {
1562: my ($arg)=@_;
1563: return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin,
1564: $Apache::functionplotresponse::fpr_xmax,
1565: $arg)];
1566: }
1567:
1568: sub fpr_d2fdx2 {
1569: my ($arg)=@_;
1570: return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin,
1571: $Apache::functionplotresponse::fpr_xmax,
1572: $arg)];
1573: }
1.77 www 1574:
1.84 www 1575: sub fpr_vectorcoords {
1576: my ($arg)=@_;
1577: $arg=~s/\W//gs;
1578: $arg=ucfirst($arg);
1579: my $id=$Apache::inputtags::response[-1];
1580: my $partid=$Apache::inputtags::part;
1581: my $internalid = $partid.'_'.$id;
1582: return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_x'},
1583: $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_x'},
1584: $env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_y'},
1585: $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_y'});
1586: }
1587:
1588: sub fpr_objectcoords {
1589: my ($arg)=@_;
1590: $arg=~s/\W//gs;
1591: $arg=ucfirst($arg);
1592: my $id=$Apache::inputtags::response[-1];
1593: my $partid=$Apache::inputtags::part;
1594: my $internalid = $partid.'_'.$id;
1595: return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'_x'},
1596: $env{'form.HWVAL_'.$internalid.'_'.$arg.'_y'});
1597: }
1598:
1599: sub fpr_vectorlength {
1600: my ($arg)=@_;
1601: my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg);
1602: return sqrt(($xe-$xs)*($xe-$xs)+($ye-$ys)*($ye-$ys));
1603: }
1604:
1605: sub fpr_vectorangle {
1606: my ($arg)=@_;
1607: my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg);
1608: my $angle=57.2957795*atan2(($ye-$ys),($xe-$xs));
1609: if ($angle<0) { $angle=360+$angle; }
1610: return $angle;
1611: }
1.77 www 1612:
1613: sub vectorcoords {
1614: my ($id,$label)=@_;
1615: return ($env{'form.HWVAL_'.$id.'_'.$label.'Start_x'},
1616: $env{'form.HWVAL_'.$id.'_'.$label.'End_x'},
1617: $env{'form.HWVAL_'.$id.'_'.$label.'Start_y'},
1618: $env{'form.HWVAL_'.$id.'_'.$label.'End_y'});
1619: }
1620:
1621: sub objectcoords {
1622: my ($id,$label)=@_;
1623: return ($env{'form.HWVAL_'.$id.'_'.$label.'_x'},
1624: $env{'form.HWVAL_'.$id.'_'.$label.'_y'});
1625: }
1.81 www 1626:
1627: sub attached {
1.87 www 1628: my ($id,$vector,$objects,$xmin,$xmax,$ymin,$ymax)=@_;
1.81 www 1629: my ($xs,$xe,$ys,$ye)=&vectorcoords($id,$vector);
1630: my $tolx=($xmax-$xmin)/100.;
1631: my $toly=($ymax-$ymin)/100.;
1632: my $tail=0;
1633: my $tip=0;
1.87 www 1634: foreach my $obj (split(/\s*\,\s*/,$objects)) {
1635: $obj=~s/\W//g;
1636: unless ($obj) { next; }
1637: $obj=ucfirst($obj);
1638: my ($xo,$yo)=&objectcoords($id,$obj);
1639: &addlog("Proximity $vector ($xs,$ys)-($xe,$ye) to $obj ($xo,$yo)");
1640: if ((abs($xs-$xo)<$tolx) && (abs($ys-$yo)<$toly)) {
1641: $tail=1;
1642: &addlog("Attached tail: $obj");
1643: }
1644: if ((abs($xe-$xo)<$tolx) && (abs($ye-$yo)<$toly)) {
1645: $tip=1;
1646: &addlog("Attached tip: $obj");
1647: }
1648: }
1.81 www 1649: &addlog("Result tail:$tail tip:$tip");
1650: return($tail,$tip);
1651: }
1652:
1.77 www 1653:
1654: sub vectorangle {
1655: my ($x,$y)=@_;
1.78 www 1656: my $angle=57.2957795*atan2($y,$x);
1657: if ($angle<0) { $angle=360+$angle; }
1658: return $angle;
1.77 www 1659: }
1660:
1661: sub vectorlength {
1662: my ($x,$y)=@_;
1663: return sqrt($x*$x+$y*$y);
1664: }
1665:
1.78 www 1666: sub relvector {
1667: my ($xs,$xe,$ys,$ye)=@_;
1668: return ($xe-$xs,$ye-$ys);
1669: }
1670:
1671: sub plotvectorlength {
1672: return &vectorlength(&relvector(&vectorcoords(@_)));
1673: }
1674:
1675: sub plotvectorangle {
1676: return &vectorangle(&relvector(&vectorcoords(@_)));
1677: }
1678:
1.77 www 1679:
1680: #
1681: # Evaluate a functionplotvectorrule
1682: #
1683:
1684: sub functionplotvectorrulecheck {
1685: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
1.78 www 1686: &addlog("=================");
1.77 www 1687: my ($label,$type)=split(/\:/,$rule);
1688: if ($type eq 'vector') {
1689: return &vectorcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval);
1690: } elsif ($type eq 'sum') {
1691: return &sumcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval);
1.85 www 1692: } elsif ($type eq 'custom') {
1693: return &customcheck($rule,$safeeval);
1.77 www 1694: }
1695: }
1696:
1697: sub vectorcheck {
1698: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
1699: my ($label,$type,$id,$vector,
1700: $attachpoint,$notattachpoint,
1701: $tailpoint,$tippoint,$nottailpoint,$nottippoint,
1.79 www 1702: $length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule);
1.78 www 1703: &addlog("Vector Rule $label for vector ".$vector);
1.79 www 1704: if ($length ne '') {
1705: &addlog("Checking for length $length with error $lengtherror");
1706: $length=&Apache::run::run($length,$safeeval);
1707: &addlog("Length evaluated to $length");
1708: my $thislength=&plotvectorlength($id,$vector);
1709: &addlog("Found length $thislength");
1710: if (abs($thislength-$length)>$lengtherror) {
1711: &setfailed($label);
1712: return 0;
1713: }
1714: }
1.80 www 1715: if ($angle ne '') {
1716: &addlog("Checking for angle $angle with error $angleerror");
1717: $angle=&Apache::run::run($angle,$safeeval);
1718: &addlog("Angle evaluated to $angle");
1719: my $thisangle=&plotvectorangle($id,$vector);
1720: &addlog("Found angle $thisangle");
1721: my $anglediff=abs($thisangle-$angle);
1722: &addlog("Angle difference: $anglediff");
1723: if ($anglediff>360.-$anglediff) {
1724: $anglediff=360.-$anglediff;
1725: }
1726: &addlog("Smallest angle difference: $anglediff");
1727: if ($anglediff>$angleerror) {
1728: &setfailed($label);
1729: return 0;
1730: }
1731: }
1.81 www 1732: if ($attachpoint ne '') {
1733: &addlog("Checking attached: ".$attachpoint);
1734: my ($tail,$tip)=&attached($id,$vector,$attachpoint,$xmin,$xmax,$ymin,$ymax);
1735: unless ($tail || $tip) {
1736: &setfailed($label);
1737: return 0;
1738: }
1739: }
1740: if ($notattachpoint ne '') {
1741: &addlog("Checking not attached: ".$notattachpoint);
1742: my ($tail,$tip)=&attached($id,$vector,$notattachpoint,$xmin,$xmax,$ymin,$ymax);
1743: if ($tail || $tip) {
1744: &setfailed($label);
1745: return 0;
1746: }
1747: }
1748: if ($tailpoint ne '') {
1749: &addlog("Checking tail: ".$tailpoint);
1750: my ($tail,$tip)=&attached($id,$vector,$tailpoint,$xmin,$xmax,$ymin,$ymax);
1751: unless ($tail) {
1752: &setfailed($label);
1753: return 0;
1754: }
1755: }
1756: if ($nottailpoint ne '') {
1757: &addlog("Checking not tail: ".$nottailpoint);
1758: my ($tail,$tip)=&attached($id,$vector,$nottailpoint,$xmin,$xmax,$ymin,$ymax);
1759: if ($tail) {
1760: &setfailed($label);
1761: return 0;
1762: }
1763: }
1764: if ($tippoint ne '') {
1765: &addlog("Checking tip: ".$tippoint);
1766: my ($tail,$tip)=&attached($id,$vector,$tippoint,$xmin,$xmax,$ymin,$ymax);
1767: unless ($tip) {
1768: &setfailed($label);
1769: return 0;
1770: }
1771: }
1772: if ($nottippoint ne '') {
1773: &addlog("Checking not tip: ".$nottippoint);
1774: my ($tail,$tip)=&attached($id,$vector,$nottippoint,$xmin,$xmax,$ymin,$ymax);
1775: if ($tip) {
1776: &setfailed($label);
1777: return 0;
1778: }
1779: }
1780:
1.79 www 1781: &addlog("Rule $label passed.");
1782: return 1;
1.77 www 1783: }
1784:
1785: sub sumcheck {
1786: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
1.82 www 1787: my ($label,$type,$id,$vectors,$length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule);
1788: &addlog("Vector Sum Rule $label for vectors ".$vectors);
1789: my $sumx=0;
1790: my $sumy=0;
1791: foreach my $sv (split(/\s*\,\s*/,$vectors)) {
1792: my ($rx,$ry)=&relvector(&vectorcoords($id,$sv));
1793: $sumx+=$rx;
1794: $sumy+=$ry;
1795: }
1796: &addlog("Sum vector ($sumx,$sumy)");
1.83 www 1797: if ($length ne '') {
1798: &addlog("Checking length $length with error $lengtherror");
1799: $length=&Apache::run::run($length,$safeeval);
1800: &addlog("Evaluated to $length");
1801: my $thislength=&vectorlength($sumx,$sumy);
1802: &addlog("Actual length $thislength");
1803: if (abs($length-$thislength)>$lengtherror) {
1804: &setfailed($label);
1805: return 0;
1806: }
1807: }
1808: if ($angle ne '') {
1809: &addlog("Checking angle $angle with error $angleerror");
1810: $angle=&Apache::run::run($angle,$safeeval);
1811: &addlog("Evaluated to $angle");
1812: my $thisangle=&vectorangle($sumx,$sumy);
1813: &addlog("Actual angle $thisangle");
1814: my $anglediff=abs($thisangle-$angle);
1815: &addlog("Angle difference: $anglediff");
1816: if ($anglediff>360.-$anglediff) {
1817: $anglediff=360.-$anglediff;
1818: }
1819: &addlog("Smallest angle difference: $anglediff");
1820: if ($anglediff>$angleerror) {
1821: &setfailed($label);
1822: return 0;
1823: }
1824: }
1.79 www 1825: &addlog("Rule $label passed.");
1826: return 1;
1.77 www 1827: }
1828:
1.85 www 1829: sub customcheck {
1830: my ($rule,$safeeval)=@_;
1831: my ($label,$type,$prg)=split(/\:/,$rule);
1832: &addlog("Custom Rule ".$label);
1833: my $result=&Apache::run::run(&unescape($prg),$safeeval);
1834: &addlog("Algorithm returned $result");
1835: unless ($result) {
1836: &setfailed($label);
1837: return 0;
1838: }
1839: &addlog("Rule $label passed.");
1840: return 1;
1841: }
1842:
1.77 www 1843: #
1844: # Evaluate a functionplotrule
1845: #
1.35 www 1846:
1.25 www 1847: sub functionplotrulecheck {
1.65 www 1848: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
1.33 www 1849:
1.35 www 1850: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent)
1.25 www 1851: =split(/\:/,$rule);
1.33 www 1852: $percent=($percent>0?$percent:5);
1.35 www 1853: &addlog("=================");
1.42 www 1854: &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value");
1.65 www 1855: #
1856: # Evaluate the value
1857: #
1.91 www 1858: if (($value=~/\D/) && ($value ne 'undef')) {
1.65 www 1859: $Apache::functionplotresponse::fpr_xmin=$xmin;
1860: $Apache::functionplotresponse::fpr_xmax=$xmax;
1861: $value=&Apache::run::run($value,$safeeval);
1862: &addlog("Value evaluated to $value");
1863: }
1864:
1865: #
1866: # Minimum and maximum lengths of the interval
1867: #
1.49 www 1868: if ((defined($minimumlength)) || (defined($maximumlength))) {
1869: &addlog("Minimumlength $minimumlength Maximumlength $maximumlength");
1870: }
1.30 www 1871: my $li=0;
1872: my $lh=400;
1873:
1.31 www 1874: # Special case: the upper boundary was not defined
1875: # and needs to be set to the value where
1876: # the condition is not true anymore => set flag
1877:
1878: my $findupper=0;
1879: if (($xfinal eq '')
1880: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}))
1881: && ($xfinallabel)) {
1882: $findupper=1;
1883: }
1884:
1.25 www 1885: # if a hard value is set for the boundaries, it overrides the label
1.30 www 1886: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) {
1887: $li=&array_index($xmin,$xmax,$xinitial);
1888: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li;
1889: }
1890: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) {
1891: $lh=&array_index($xmin,$xmax,$xfinal);
1892: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh;
1.25 www 1893: }
1.31 www 1894: # if the label is defined, use it
1.25 www 1895: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) {
1.35 www 1896: &addlog("Using lower label $xinitiallabel");
1.30 www 1897: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel};
1898: } else {
1899: $li=&array_index($xmin,$xmax,$xinitial);
1.25 www 1900: }
1.31 www 1901: unless ($findupper) {
1902: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) {
1.35 www 1903: &addlog("Using upper label $xfinallabel");
1.33 www 1904: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1;
1.31 www 1905: } else {
1906: $lh=&array_index($xmin,$xmax,$xfinal);
1907: }
1.25 www 1908: }
1909: # Basic sanity checks
1.30 www 1910: if ($li<0) { $li=0; }
1911: if ($lh>400) { $lh=400; }
1.38 www 1912: if (($li>$lh) || (!defined($lh))) {
1.30 www 1913: $lh=$li;
1.25 www 1914: }
1.31 www 1915:
1.35 www 1916: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=".
1917: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))");
1918: if ($findupper) {
1919: &addlog("Looking for label $xfinallabel");
1920: }
1.33 www 1921: my $tol=$percent*($ymax-$ymin)/100;
1922: if ($xmax>$xmin) {
1923: if ($derivative==2) {
1924: $tol=4.*$tol/($xmax-$xmin);
1925: } elsif ($derivative==1) {
1926: $tol=2.*$tol/($xmax-$xmin);
1.42 www 1927: } elsif ($derivative==-1) {
1928: $tol=$tol*($xmax-$xmin)/2.;
1.33 www 1929: }
1.27 www 1930: }
1.42 www 1931: my $integral=0;
1932: my $binwidth=($xmax-$xmin)/400.;
1933: if (($derivative<0) && (!$findupper)) {
1934: # definite integral, calculate over whole length
1935: &addlog("Calculating definite integral");
1936: for (my $i=$li; $i<=$lh; $i++) {
1937: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
1938: }
1939: unless (&compare_rel($relationship,$value,$integral,$tol)) {
1940: &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol");
1941: &addlog("Rule $label failed.");
1.79 www 1942: &setfailed($label);
1.42 www 1943: return 0;
1944: }
1945: } else {
1946: for (my $i=$li; $i<=$lh; $i++) {
1.25 www 1947: my $val;
1948: if ($derivative==2) {
1.27 www 1949: $val=$Apache::functionplotresponse::d2funcdx2[$i];
1.25 www 1950: } elsif ($derivative==1) {
1.27 www 1951: $val=$Apache::functionplotresponse::dfuncdx[$i];
1.42 www 1952: } elsif ($derivative==-1) {
1953: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
1954: $val=$integral;
1.25 www 1955: } else {
1.27 www 1956: $val=$Apache::functionplotresponse::func[$i];
1.25 www 1957: }
1.31 www 1958: unless (&compare_rel($relationship,$value,$val,$tol)) {
1.37 www 1959: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol");
1.35 www 1960: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)");
1.31 www 1961: if (($findupper) && ($i>$li)) {
1.49 www 1962: # Check lengths
1963: unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
1964: # Successfully found a new label, set it
1.31 www 1965: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i;
1.35 www 1966: &addlog("Rule $label passed, setting label $xfinallabel");
1.31 www 1967: return 1;
1968: } else {
1.35 www 1969: &addlog("Rule $label failed.");
1.49 www 1970: &setfailed($label);
1.31 www 1971: return 0;
1972: }
1973: }
1.42 www 1974: }
1.25 www 1975: }
1.49 www 1976: # Corner case where this makes sense: using start or stop as defined labels
1977: unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
1.35 www 1978: &addlog("Rule $label passed.");
1.27 www 1979: return 1;
1.24 www 1980: }
1981:
1.49 www 1982: #
1983: # check for minimum and maximum lengths
1984: #
1985:
1986: sub checklength {
1987: my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_;
1988: unless (($minimumlength) || ($maximumlength)) { return 1; }
1989: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax);
1990: if ($minimumlength) {
1991: if ($length<$minimumlength) {
1992: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength");
1993: &setfailed($label);
1994: return 0;
1995: }
1996: }
1997: if ($maximumlength) {
1998: if ($length>$maximumlength) {
1999: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength");
2000: &setfailed($label);
2001: return 0;
2002: }
2003: }
2004: return 1;
2005: }
2006:
2007: sub setfailed {
1.79 www 2008: my ($hintlabel)=@_;
1.49 www 2009: $hintlabel=~s/^R//;
2010: push(@Apache::functionplotresponse::failedrules,$hintlabel);
2011: &addlog("Set hint condition $hintlabel");
2012: }
2013:
1.37 www 2014: sub start_functionplotruleset {
2015: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2016: if ($target eq 'edit') {
2017: return &Apache::edit::start_table($token).
2018: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>'
2019: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
2020: .&Apache::edit::deletelist($target,$token).' '.
1.50 www 2021: &Apache::edit::insertlist($target,$token).' '
2022: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules')
1.37 www 2023: .'</span></td>'
2024: ."<td> "
2025: .&Apache::edit::end_row()
2026: .&Apache::edit::start_spanning_row()
2027: ."\n";
2028: }
2029: }
1.3 www 2030:
1.37 www 2031: sub end_functionplotruleset {
2032: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2033: my $id=$Apache::inputtags::response[-1];
2034: my $partid=$Apache::inputtags::part;
2035: my $internalid = $partid.'_'.$id;
2036:
2037: if ($target eq 'edit' ) {
2038: return &Apache::edit::end_table();
2039: } elsif ($target eq 'grade'
1.10 www 2040: && &Apache::response::submitted()
2041: && $Apache::lonhomework::type ne 'exam') {
1.12 www 2042: #
2043: # Actually grade
2044: #
1.41 www 2045: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
1.27 www 2046:
1.24 www 2047: my $ad='';
1.30 www 2048: undef %Apache::functionplotresponse::functionplotrulelabels;
1.35 www 2049: $Apache::functionplotresponse::ruleslog='';
1.30 www 2050: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400;
2051: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0;
1.64 www 2052: if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') {
1.21 www 2053: $ad='NOT_FUNCTION';
1.18 www 2054: } else {
1.35 www 2055: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ".
2056: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")");
2057: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ".
2058: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")");
2059:
1.24 www 2060: # We have a function that we can actually grade, go through the spline rules.
1.25 www 2061: foreach my $rule (@Apache::functionplotresponse::functionplotrules) {
1.65 www 2062: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) {
1.24 www 2063: $ad='INCORRECT';
2064: last;
2065: }
2066: }
1.77 www 2067: # And now go through the vector rules
2068: foreach my $rule (@Apache::functionplotresponse::functionplotvectorrules) {
2069: unless (&functionplotvectorrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) {
2070: $ad='INCORRECT';
2071: last;
2072: }
2073: }
1.24 www 2074: # If it's not wrong, it's correct
2075: unless ($ad) { $ad='EXACT_ANS' };
1.18 www 2076: }
1.37 www 2077: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules));
2078: &addlog("Assigned award detail: $ad");
2079: # Store for later to be assigned at end_functionplotresponse
2080: $Apache::functionplotresponse::awarddetail=$ad;
2081: }
2082: }
2083:
2084:
2085: sub end_functionplotresponse {
2086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2087: &Apache::response::end_response;
2088:
2089: my $result;
2090: my $id=$Apache::inputtags::response[-1];
2091: my $partid=$Apache::inputtags::part;
2092: my $internalid = $partid.'_'.$id;
1.20 www 2093:
1.37 www 2094: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
2095: if ($target eq 'grade'
2096: && &Apache::response::submitted()
2097: && $Apache::lonhomework::type eq 'exam') {
2098:
2099: &Apache::response::scored_response($partid,$id);
2100:
2101: } elsif ($target eq 'grade'
2102: && &Apache::response::submitted()
2103: && $Apache::lonhomework::type ne 'exam') {
2104: my ($response,%coords)=&get_answer_from_form_fields($internalid);
2105: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
2106: my %previous=&Apache::response::check_for_previous($response,$partid,$id);
2107: #
2108: # Assign grade
2109: #
2110: my $ad=$Apache::functionplotresponse::awarddetail;
1.12 www 2111: #
2112: # Store grading info
2113: #
2114: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
2115: &Apache::response::handle_previous(\%previous,$ad);
1.10 www 2116: } elsif ($target eq 'web') {
1.37 www 2117: undef @Apache::functionplotresponse::failedrules;
2118: }
2119: return $result;
2120: }
2121:
2122: sub end_functionplotelements {
2123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2124: my $result='';
2125: my $id=$Apache::inputtags::response[-1];
2126: my $partid=$Apache::inputtags::part;
2127: my $internalid = $partid.'_'.$id;
2128: if ($target eq 'edit' ) {
2129: $result=&Apache::edit::end_table();
2130: } elsif ($target eq 'web') {
1.47 www 2131: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
2132:
2133: # Are we in show answer mode?
2134: my $showanswer=&Apache::response::show_answer();
2135: if ($showanswer) {
2136: # Render answerdisplay
2137: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2);
2138: if ($answerdisplay=~/\S/s) {
2139: foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) {
1.58 www 2140: my @components=split(/\s*\:\s*/,$plot);
2141: if ($#components<3) {
2142: # Just a simple plot
2143: my ($func,$xl,$xh)=@components;
2144: if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; }
2145: if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; }
2146: $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6);
2147: } else {
2148: # This is a spline
1.59 www 2149: $result.=&answer_spline_script($internalid,@components);
1.58 www 2150: }
1.47 www 2151: }
2152: }
2153: }
1.48 www 2154: my $fixed=0;
2155: if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; }
1.6 www 2156: # Now is the time to render all of the stored splines
2157: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
1.48 www 2158: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed);
1.6 www 2159: }
1.5 www 2160: # close the init script
1.3 www 2161: $result.=&end_init_script();
1.17 www 2162: # register all splines in this response
2163: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'.
2164: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n";
2165: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
2166: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'.
2167: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n";
2168: }
1.9 www 2169: # generate the input fields
2170: $result.=$Apache::functionplotresponse::inputfields;
1.5 www 2171: # actually start the <applet>-tag
1.88 www 2172: $result.=&geogebra_startcode($internalid,
2173: &Apache::lonxml::get_param('width',$parstack,$safeeval,-2),
2174: &Apache::lonxml::get_param('height',$parstack,$safeeval,-2));
1.5 www 2175: # set default parameters
1.3 www 2176: $result.=&geogebra_default_parameters($internalid);
1.5 www 2177: # close the <applet>-tag
1.1 www 2178: $result.=&geogebra_endcode();
2179: }
2180: return $result;
2181: }
2182:
1.41 www 2183: sub boundaries {
2184: my ($parstack,$safeeval,$level)=@_;
2185: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level);
2186: $xmin=(defined($xmin)?$xmin:-10);
2187: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level);
2188: $xmax=(defined($xmax)?$xmax:10);
2189: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level);
2190: $ymin=(defined($ymin)?$ymin:-10);
2191: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level);
2192: $ymax=(defined($ymax)?$ymax:10);
2193: if ($xmax<=$xmin) {
2194: $xmax=$xmin+20;
2195: }
2196: if ($ymax<=$ymin) {
2197: $ymax=$ymin+20;
2198: }
2199: return ($xmin,$xmax,$ymin,$ymax);
2200: }
2201:
1.37 www 2202: sub start_functionplotelements {
2203: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2204: my $result='';
2205: my $id=$Apache::inputtags::response[-1];
2206: my $partid=$Apache::inputtags::part;
2207: my $internalid = $partid.'_'.$id;
2208:
2209: if ($target eq 'edit') {
2210: return &Apache::edit::start_table($token).
2211: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>'
2212: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
2213: .&Apache::edit::deletelist($target,$token).' '.
1.50 www 2214: &Apache::edit::insertlist($target,$token).' '
2215: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements')
1.37 www 2216: .'</span></td>'
2217: ."<td> "
2218: .&Apache::edit::end_row()
2219: .&Apache::edit::start_spanning_row()
2220: ."\n";
2221: } elsif ($target eq 'web') {
1.41 www 2222: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
1.37 www 2223: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
2224: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
2225: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
2226: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2);
2227: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2);
2228:
2229:
2230: # paste in the update routine to receive stuff back from the applet
2231: $result.=&update_script($internalid);
2232: # start the initscript for this applet
2233: $result.=&start_init_script($internalid);
2234: # put the axis commands inside
2235: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible);
1.45 www 2236: $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel);
1.37 www 2237: # init script is left open
2238: }
2239: return $result;
2240: }
2241:
1.1 www 2242: 1;
2243:
2244: __END__
2245:
2246: =head1 NAME
2247:
2248: Apache::functionplotresponse.pm;
2249:
2250: =head1 SYNOPSIS
2251:
2252: Handles tags associated with accepting function plots.
2253:
2254: This is part of the LearningOnline Network with CAPA project
2255: described at http://www.lon-capa.org.
2256:
2257: =head1 HANDLER SUBROUTINE
2258:
2259: start_functionplotresponse()
2260:
2261: =head1 OTHER SUBROUTINES
2262:
2263: =over
2264:
2265: =item end_functionplotresponse()
2266:
2267: =back
2268:
2269: =cut
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