Annotation of loncom/homework/functionplotresponse.pm, revision 1.7
1.1 www 1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
1.7 ! www 4: # $Id: functionplotresponse.pm,v 1.6 2010/10/05 00:10:07 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;
34:
35: BEGIN {
1.6 www 36: &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline'));
1.1 www 37: }
38:
1.5 www 39: #
40: # There can be a number of applets on a page, each called ggbApplet_$id,
41: # where $id is the "_"-concatenated part and responseid
42: #
43:
1.1 www 44: sub geogebra_startcode {
1.3 www 45: my ($id)=@_;
1.1 www 46: return (<<ENDSTARTCODE);
1.3 www 47: <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
1.1 www 48: codebase="/adm/geogebra/" width="714" height="447" MAYSCRIPT>
49: <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>
50: ENDSTARTCODE
51: }
52:
53: sub geogebra_endcode {
1.2 www 54: return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n";
55: }
56:
1.5 www 57: #
58: # This is the internal GeoGebra bytecode which defines the spline functions
59: #
1.2 www 60: sub geogebra_spline_program {
61: return (<<ENDSPLINEPROGRAM);
62: <param name="ggbBase64" value="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"/>
63: ENDSPLINEPROGRAM
64: }
65:
1.5 www 66: #
67: # The standard set of parameters inside <applet>
68: #
1.2 www 69: sub geogebra_default_parameters {
1.3 www 70: my ($id)=@_;
1.2 www 71: return(<<ENDDEFAULTPARAMETERS);
72: <param name="image" value="/adm/lonIcons/lonanim.gif" />
73: <param name="boxborder" value="false" />
74: <param name="centerimage" value="true" />
75: <param name="java_arguments" value="-Xmx512m" />
76: <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_properties.jar" />
77: <param name="cache_version" value="3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0" />
78: <param name="framePossible" value="false" />
79:
80: <param name="showResetIcon" value="false" />
81: <param name="showAnimationButton" value="false" />
82: <param name="enableRightClick" value="false" />
83: <param name="errorDialogsActive" value="true" />
84: <param name="enableLabelDrags" value="false" />
85: <param name="showMenuBar" value="false" />
86: <param name="showToolBar" value="false" />
87: <param name="showToolBarHelp" value="false" />
88: <param name="showAlgebraInput" value="false" />
89: <param name="enableShiftDragZoom" value="false" />
90: <param name="allowRescaling" value="false" />
91: <param name="enableLabelDrags" value="false" />
1.3 www 92: <param name="ggbOnInitParam" value="applet_$id" />
1.2 www 93: ENDDEFAULTPARAMETERS
1.1 www 94: }
95:
1.5 www 96: #
97: # This subroutine is called by LON-CAPA at </problem>
98: # Each applet on the page will call function ggbOnInit when it is done loading
99: # This function in turn will call the respective function registered by start_init_script
100: # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit
101: #
102:
1.3 www 103: sub init_script {
104: if ($Apache::functionplotresponse::callscripts) {
105: return (<<ENDGGBINIT);
106: <script type="text/javascript">
107: // <![CDATA[
108: function ggbOnInit(param) {
109: $Apache::functionplotresponse::callscripts
110: }
111: // ]]>
112: </script>
113: ENDGGBINIT
114: }
115: }
116:
1.5 www 117: #
118: # Each Geogebra applet is supposed to call this when parameters change
119: #
120: sub update_script {
121: my ($id)=@_;
122: return (<<ENDUPDATESCRIPT);
123: <script type="text/javascript">
124: // <![CDATA[
125: function updatePointCoordinates_$id(coordinateName) {
126: var x = document.ggbApplet_$id.getXcoord(coordinateName);
127: var y = document.ggbApplet_$id.getYcoord(coordinateName);
128: coordinateMap_$id\[coordinateName + ".x"] = x;
129: coordinateMap_$id\[coordinateName + ".y"] = y;
130: }
131: // ]]>
132: </script>
133: ENDUPDATESCRIPT
134: }
135:
136: #
137: # Register the above update-handler for a variable
138: #
139:
140: sub update_register {
141: my ($id,$variable)=@_;
1.6 www 142: return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n";
143: }
144:
145: #
146: # Set a coordinate variable
147: #
148: sub set_coordinate {
149: my ($id,$variable,$x,$y)=@_;
150: return (<<ENDSETVARIABLE);
151: coordinateMap_$id\['$variable.x'] = $x;
152: coordinateMap_$id\['$variable.y'] = $y;
153: document.ggbApplet_$id.evalCommand("$variable=("+coordinateMap_$id\["$variable.x"]+","+coordinateMap_$id\["$variable.y"]+")");
154: ENDSETVARIABLE
155: }
156:
157: #
158: # Initialize a new coordinate variable at set a listener on it
159: #
160: sub new_coordinate {
161: my ($id,$variable,$x,$y)=@_;
162: return &set_coordinate($id,$variable,$x,$y).&update_register($id,$variable);
1.5 www 163: }
164:
165: #
166: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem>
167: # It then starts the right headers
168: #
1.3 www 169: sub start_init_script {
170: my ($id)=@_;
1.5 www 171: # Add a line to ggbOnInit-function which calls the right function based on parameter passed from GeoGebra
1.3 www 172: $Apache::functionplotresponse::callscripts.="if (param=='applet_$id') { ggbInit_$id(); }\n";
1.5 www 173: # ... and open this function
1.3 www 174: return (<<ENDSTARTINIT);
175: <script type="text/javascript">
176: // <![CDATA[
1.5 www 177: // variable that will eventually be passed back to the server
178: var coordinateMap_$id = [];
179: // Init-function for applet
1.3 www 180: function ggbInit_$id() {
181: ENDSTARTINIT
182: }
183:
1.5 www 184: #
185: # This sets the axes inside ggbInit_$id
186: #
187:
1.4 www 188: sub axes_script {
189: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_;
190: return (<<ENDAXESSCRIPT);
191: // changes (xmin, xmax, ymin, ymax)
192: document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax);
193:
194: // makes the (x,y) axis (in)visible
195: document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible);
196: // makes the grid (in)visible
197: document.ggbApplet_$id.setGridVisible($gvisible);
198: ENDAXESSCRIPT
199: }
200:
201: sub plot_script {
1.6 www 202: my ($id,$function,$fixed)=@_;
203: if ($fixed) {
204: # Use stupid trick to nail this to a location
205: return (<<ENDPLOTSCRIPT);
206: document.ggbApplet_$id.evalCommand("a=1");
207: document.ggbApplet_$id.setVisible("a",false);
208: // This MUST be a DEPENDENT OBJECT in order to be locked down:
209: document.ggbApplet_$id.evalCommand("y=a*($function)");
1.4 www 210: ENDPLOTSCRIPT
1.6 www 211: } else {
212: return "document.ggbApplet_$id.evalCommand('y=$function')";
213: }
1.4 www 214: }
215:
1.5 www 216: #
1.7 ! www 217: # Subroutine that generates code for spline $label based on stored information
1.6 www 218: #
219:
220: sub generate_spline {
221: my ($id,$label)=@_;
222: my $result='';
1.7 ! www 223: my $order=$Apache::functionplotresponse::splineorder{$label};
! 224: my $x=$Apache::functionplotresponse::splineinitx{$label};
! 225: my $y=$Apache::functionplotresponse::splineinity{$label};
! 226: my $sx=$Apache::functionplotresponse::splinescalex{$label};
! 227: my $sy=$Apache::functionplotresponse::splinescaley{$label};
! 228: my @coords=();
! 229: foreach my $i (1..$order) {
! 230: $result.=&new_coordinate($id,$label.'P'.$i,$x,$y);
! 231: $x+=$sx/$order;
! 232: push(@coords,$label.'P'.$i);
! 233: $result.=&new_coordinate($id,$label.'S'.$i,$x,$y+$sy);
! 234: $x+=$sx/$order;
! 235: push(@coords,$label.'S'.$i);
! 236: }
! 237: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n";
1.6 www 238: return $result;
239: }
240: #
241: # <backgroundplot function="..." fixed="yes/no" />
1.5 www 242: #
1.4 www 243: sub start_backgroundplot {
244: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
245: my $result='';
246: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
247: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);
1.6 www 248: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0);
249:
1.4 www 250: unless ($function) { $function="0"; }
251: if ($target eq 'web') {
1.6 www 252: $result.=&plot_script($internalid,$function,$fixed);
1.4 www 253: }
254: return $result;
255: }
256:
257: sub end_backgroundplot {
1.6 www 258: return '';
259: }
260:
261: #
262: # <spline label="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." />
263: #
264: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them
265: #
266: sub start_spline {
267: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
268: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
269: $Apache::functionplotresponse::counter++;
270: unless ($label) { $label='S'.$Apache::functionplotresponse::counter; }
271:
272: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval);
273: if (($order<2) || ($order>4)) { $order=2; }
274: $Apache::functionplotresponse::splineorder{$label}=$order;
275:
276: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval);
277: unless ($x) { $x=0; }
278: $Apache::functionplotresponse::splineinitx{$label}=$x;
279:
280: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval);
281: unless ($y) { $y=0; }
282: $Apache::functionplotresponse::splineinity{$label}=$y;
283:
284: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval);
285: unless ($sx) { $sx=$order; }
286: $Apache::functionplotresponse::splinescalex{$label}=$sx;
287:
288: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval);
289: unless ($sy) { $sy=2; }
290: $Apache::functionplotresponse::splinescaley{$label}=$sy;
1.7 ! www 291: return '';
1.6 www 292: }
293:
294: sub end_spline {
295: return '';
1.4 www 296: }
297:
1.3 www 298: sub end_init_script {
299: return (<<ENDENDINIT);
300: }
301: // ]]>
302: </script>
303: ENDENDINIT
304: }
305:
1.1 www 306: sub start_functionplotresponse {
307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
308: my $result='';
1.6 www 309: # To remember the splines - somehow, they need to come last
310: undef %Apache::functionplotresponse::splineorder;
311: undef %Apache::functionplotresponse::splineinitx;
312: undef %Apache::functionplotresponse::splineinity;
313: undef %Apache::functionplotresponse::splinescalex;
314: undef %Apache::functionplotresponse::splinescaley;
315: $Apache::functionplotresponse::counter=0;
316: # Internal ID to mark the applet and its coordinates
1.3 www 317: my $internalid = $Apache::inputtags::part.'_'.&Apache::response::start_response($parstack,$safeeval);
1.6 www 318: # Parameters of <functionplotresponse>
1.3 www 319: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval);
1.4 www 320: $xmin=($xmin?$xmin:-10);
1.3 www 321: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval);
1.4 www 322: $xmax=($xmax?$xmax:10);
1.3 www 323: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval);
1.4 www 324: $ymin=($ymin?$ymin:-10);
1.3 www 325: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval);
1.4 www 326: $ymax=($ymax?$ymax:10);
1.6 www 327: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
328: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
329: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
1.3 www 330:
1.1 www 331: if ($target eq 'web') {
1.5 www 332: # paste in the update routine to receive stuff back from the applet
333: $result.=&update_script($internalid);
334: # start the initscript for this applet
1.3 www 335: $result.=&start_init_script($internalid);
1.5 www 336: # put the axis commands inside
1.4 www 337: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible);
1.5 www 338: # init script is left open
1.1 www 339: }
340: return $result;
341: }
342:
343: sub end_functionplotresponse {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
345: &Apache::response::end_response;
1.3 www 346:
1.1 www 347: my $result;
1.3 www 348: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
349:
1.1 www 350: # if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
351: if ($target eq 'web') {
1.6 www 352: # Now is the time to render all of the stored splines
353: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
354: $result.=&generate_spline($internalid,$label);
355: }
1.5 www 356: # close the init script
1.3 www 357: $result.=&end_init_script();
1.5 www 358: # actually start the <applet>-tag
1.3 www 359: $result.=&geogebra_startcode($internalid);
1.5 www 360: # load the spline bytecode
1.3 www 361: $result.=&geogebra_spline_program();
1.5 www 362: # set default parameters
1.3 www 363: $result.=&geogebra_default_parameters($internalid);
1.5 www 364: # close the <applet>-tag
1.1 www 365: $result.=&geogebra_endcode();
366: }
367: return $result;
368: }
369:
370: 1;
371:
372: __END__
373:
374: =head1 NAME
375:
376: Apache::functionplotresponse.pm;
377:
378: =head1 SYNOPSIS
379:
380: Handles tags associated with accepting function plots.
381:
382: This is part of the LearningOnline Network with CAPA project
383: described at http://www.lon-capa.org.
384:
385: =head1 HANDLER SUBROUTINE
386:
387: start_functionplotresponse()
388:
389: =head1 OTHER SUBROUTINES
390:
391: =over
392:
393: =item end_functionplotresponse()
394:
395: =back
396:
397: =cut
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