--- loncom/homework/functionplotresponse.pm 2010/10/04 14:34:43 1.2
+++ loncom/homework/functionplotresponse.pm 2012/08/17 13:08:11 1.98
@@ -1,7 +1,7 @@
# LearningOnline Network with CAPA
-# option list style responses
+# Functionplot responses
#
-# $Id: functionplotresponse.pm,v 1.2 2010/10/04 14:34:43 www Exp $
+# $Id: functionplotresponse.pm,v 1.98 2012/08/17 13:08:11 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -31,37 +31,131 @@ use strict;
use Apache::response();
use Apache::lonlocal;
use Apache::lonnet;
-
+use Apache::run;
+use LONCAPA;
+
BEGIN {
- &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse'));
+ &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline',
+ 'plotobject','plotvector',
+ 'functionplotvectorrule','functionplotvectorsumrule',
+ 'drawvectorsum',
+ 'functionplotcustomrule',
+ 'functionplotrule','functionplotruleset',
+ 'functionplotelements'));
+}
+
+#
+# Use old Java or HTML5/Javascript for GeoGebra? Depends on browser!
+# Return a true value if HTML5 should be used.
+
+sub useHTML5 {
+ return 1;
}
+#
+# HTML5 version does not understand "_" in IDs
+#
+sub appid {
+ my ($id)=@_;
+ $id=~s/\_/rid/gs;
+ $id=~s/\W//gs;
+ return $id;
+}
+
+#
+# Routines to start the applet (Java) or the HTML5/JavaScript
+#
+# There can be a number of applets on a page, each called ggbApplet_$id,
+# where $id is the "_"-concatenated part and responseid
+#
+
sub geogebra_startcode {
+ my ($id,$width,$height)=@_;
+ if (&useHTML5()) {
+ return &html5_geogebra_startcode(@_);
+ } else {
+ return &java_geogebra_startcode(@_).
+ &java_geogebra_code_param();
+ }
+}
+
+sub geogebra_endcode {
+ if (&useHTML5()) {
+ return '';
+ } else {
+ return &java_geogebra_endcode();
+ }
+}
+
+sub geogebra_default_parameters {
+ my ($id)=@_;
+ if (&useHTML5()) {
+ return '';
+ } else {
+ return &java_geogebra_default_parameters($id);
+ }
+}
+# === Java code
+
+sub java_geogebra_startcode {
+ my ($id,$width,$height)=@_;
+ my $appid=&appid($id);
+ $width=int(1.*$width);
+ $height=int(1.*$height);
+ unless ($width) { $width=700; }
+ unless ($height) { $height=400; }
return (<<ENDSTARTCODE);
-<applet name="ggbApplet" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
- codebase="/adm/geogebra/" width="714" height="447" MAYSCRIPT>
+<applet name="ggbApplet$appid" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
+ codebase="/adm/geogebra/" width="$width" height="$height" MAYSCRIPT>
<param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>
ENDSTARTCODE
}
-sub geogebra_endcode {
+sub java_geogebra_endcode {
return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n";
}
-sub geogebra_spline_program {
- return (<<ENDSPLINEPROGRAM);
-<param name="ggbBase64" value="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"/>
-ENDSPLINEPROGRAM
+sub java_geogebra_code_param {
+ return '<param name="ggbBase64" value="'.&geogebra_internal_program().'" />';
}
-sub geogebra_default_parameters {
+# === HTML5 code
+
+sub html5_geogebra_startcode {
+ my ($id,$width,$height)=@_;
+ my $appid=&appid($id);
+ $width=int(1.*$width);
+ $height=int(1.*$height);
+ unless ($width) { $width=700; }
+ unless ($height) { $height=400; }
+ my $code=&geogebra_internal_program();
+ return (<<ENDSTARTCODE);
+<article class="geogebraweb" data-param-enableLabelDrags="false" data-param-enableShiftDragZoom="false"
+data-param-width="$width" data-param-height="$height" data-param-id="ggbApplet$appid"
+data-param-ggbbase64="$code"></article>
+ENDSTARTCODE
+}
+
+#
+# This is the internal GeoGebra bytecode which defines the spline functions
+#
+sub geogebra_internal_program {
+ return
+'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';
+}
+
+#
+# The standard set of parameters inside <applet>
+#
+sub java_geogebra_default_parameters {
+ my ($id)=@_;
+ my $appid=&appid($id);
return(<<ENDDEFAULTPARAMETERS);
<param name="image" value="/adm/lonIcons/lonanim.gif" />
<param name="boxborder" value="false" />
<param name="centerimage" value="true" />
- <param name="java_arguments" value="-Xmx512m" />
- <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_properties.jar" />
- <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" />
+ <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" />
+ <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" />
<param name="framePossible" value="false" />
<param name="showResetIcon" value="false" />
@@ -76,32 +170,2074 @@ sub geogebra_default_parameters {
<param name="enableShiftDragZoom" value="false" />
<param name="allowRescaling" value="false" />
<param name="enableLabelDrags" value="false" />
- <param name="ggbOnInitParam" value="applet1" />
+ <param name="ggbOnInitParam" value="ggbApplet$appid" />
ENDDEFAULTPARAMETERS
}
+#
+# This subroutine is called by LON-CAPA at </problem>
+# Each applet on the page will call function ggbOnInit when it is done loading
+# This function in turn will call the respective function registered by start_init_script
+# Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit
+#
+
+sub init_script {
+ if ($#Apache::functionplotresponse::callscripts>=0) {
+ my $script='';
+ foreach my $id (@Apache::functionplotresponse::callscripts) {
+ $script.="if (param=='ggbApplet".&appid($id)."') { loaded_$id=true; }\n";
+ }
+ $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)).
+ ") { setTimeout('ggbInitAll()',200) }";
+ my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts));
+ my $html5init='';
+ if (&useHTML5()) {
+ $html5init=
+ '<script type="text/javascript" language="javascript" src="/adm/geogebra/html5/web/test42/web/web.nocache.js"></script>';
+ }
+ return (<<ENDGGBINIT);
+$html5init
+<script type="text/javascript">
+// <![CDATA[
+// Function that each applet will call when loaded
+// It will pass "its" parameter
+// Set flags for when an applet is loaded, wait till all are loaded, and then some
+function ggbOnInit(param) {
+$script
+}
+function ggbInitAll() {
+$calls
+}
+// ]]>
+</script>
+ENDGGBINIT
+ }
+}
+
+#
+# Each Geogebra applet is supposed to call this when parameters change
+# Changes the hidden fields on the web page
+#
+sub update_script {
+ my ($id)=@_;
+ my $appid=&appid($id);
+ return (<<ENDUPDATESCRIPT);
+<script type="text/javascript">
+// <![CDATA[
+function updatePointCoordinates_$id(coordinateName) {
+ var x = document.ggbApplet$appid.getXcoord(coordinateName);
+ var y = document.ggbApplet$appid.getYcoord(coordinateName);
+ document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x;
+ document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y;
+ }
+// ]]>
+</script>
+ENDUPDATESCRIPT
+}
+
+#
+# Register the above update-handler for a variable
+#
+
+sub update_register {
+ my ($id,$variable)=@_;
+ my $appid=&appid($id);
+ return "document.ggbApplet$appid.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n";
+}
+
+#
+# Set a point coordinate variable
+#
+sub set_point_coordinate {
+ my ($id,$variable,$x,$y,$fixed)=@_;
+ my $appid=&appid($id);
+ my $mult=($fixed?'a*':'');
+# Get rid of wild exponents, make sure it's a number
+ $x=1.*$x;
+ $y=1.*$y;
+# GeoGebra does not understand "E"
+ $x=~s/[e|E]/\*10\^/;
+ $x=~s/\+//;
+ $y=~s/[e|E]/\*10\^/;
+ $y=~s/\+//;
+ return (<<ENDSETVARIABLE);
+document.ggbApplet$appid.evalCommand("a=1");
+document.ggbApplet$appid.evalCommand("$variable=$mult($x,$y)");
+document.ggbApplet$appid.setLabelVisible("$variable",false);
+ENDSETVARIABLE
+}
+
+#
+# Set a slope coordinate variable
+#
+sub set_slope_coordinate {
+ my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_;
+ my $appid=&appid($id);
+ my $xvariable=$variable.'x';
+ my $yvariable=$variable.'y';
+ my $domain=$xmax-$xmin;
+ my $range=$ymax-$ymin;
+ my $xinterval=$domain/100.;
+ my $yinterval=$range/200.;
+ my $mult=($fixed?'a*':'');
+ return (<<ENDSETSVARIABLE);
+document.ggbApplet$appid.evalCommand("a=1");
+document.ggbApplet$appid.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]");
+document.ggbApplet$appid.setVisible("$xvariable", false);
+document.ggbApplet$appid.evalCommand("$xvariable=$xrel");
+document.ggbApplet$appid.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]");
+document.ggbApplet$appid.setVisible("$yvariable", false);
+document.ggbApplet$appid.evalCommand("$yvariable=$yrel");
+document.ggbApplet$appid.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))");
+document.ggbApplet$appid.setLabelVisible("$variable", false);
+ENDSETSVARIABLE
+}
+
+#
+# Input field name for a coordinate variable
+#
+
+sub field_name {
+ my ($id,$variable,$name)=@_;
+ return "HWVAL_$id\_$variable\_$name";
+}
+
+#
+# Generate an input field for a coordinate variable
+#
+
+sub generate_input_field {
+ my ($id,$variable,$x,$y)=@_;
+ $Apache::functionplotresponse::inputfields.=
+ "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n".
+ "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n";
+}
+
+#
+# Initialize a new point coordinate variable at set a listener on it
+#
+sub new_point_coordinate {
+ my ($id,$variable,$x,$y,$fixed)=@_;
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
+ $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
+ }
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) {
+ $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
+ }
+ &generate_input_field($id,$variable,$x,$y);
+ return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable);
+}
+
+#
+# Initialize a new slope coordinate variable at set a listener on it
+#
+sub new_slope_coordinate {
+ my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
+#
+# $variable: name of the slope point
+# $x, $y: coordinates of the slope point
+# $pointname: name of the associated point point
+# $xp $yp: coordinates of the point point
+#
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
+ $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
+ }
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) {
+ $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
+ }
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) {
+ $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')};
+ }
+ if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) {
+ $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')};
+ }
+
+ &generate_input_field($id,$variable,$x,$y);
+ my $xrel=$x-$xp;
+ my $yrel=$y-$yp;
+ return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable);
+}
+
+#
+# This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem>
+# It then starts the right headers
+#
+sub start_init_script {
+ my ($id)=@_;
+# Add id to the list of ggbInit_$id functions that need to be called
+ push(@Apache::functionplotresponse::callscripts,$id);
+# ... and open this function
+ return (<<ENDSTARTINIT);
+<script type="text/javascript">
+// <![CDATA[
+// variable that will eventually be passed back to the server
+var coordinateMap_$id = [];
+// flag for not loaded yet
+var loaded_$id=false;
+// Init-function for applet
+function ggbInit_$id() {
+ENDSTARTINIT
+}
+
+#
+# This sets the axes inside ggbInit_$id
+#
+
+sub axes_script {
+ my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_;
+ my $appid=&appid($id);
+ return (<<ENDAXESSCRIPT);
+ // changes (xmin, xmax, ymin, ymax)
+ document.ggbApplet$appid.setCoordSystem($xmin,$xmax,$ymin,$ymax);
+
+ // makes the (x,y) axis (in)visible
+ document.ggbApplet$appid.setAxesVisible($xvisible,$yvisible);
+ // makes the grid (in)visible
+ document.ggbApplet$appid.setGridVisible($gvisible);
+ENDAXESSCRIPT
+}
+
+sub axes_label {
+ my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_;
+ my $appid=&appid($id);
+ unless ($xlabel || $ylabel) { return ''; }
+ my $return='document.ggbApplet'.$appid.'.evalCommand("topRight=Corner[3]");';
+ if ($xlabel) {
+ if (($ymin<0) && ($ymax>0)) {
+ $return.=(<<ENDXAXISLABELSCRIPT);
+document.ggbApplet$appid.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)");
+document.ggbApplet$appid.setVisible("Xlabel",false);
+document.ggbApplet$appid.evalCommand("Text[\\"$xlabel\\", Xlabel]");
+ENDXAXISLABELSCRIPT
+ } else {
+ $return.=(<<ENDXOFFAXISLABEL);
+document.ggbApplet$appid.evalCommand("LowerRight=Corner[2]");
+document.ggbApplet$appid.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]");
+ENDXOFFAXISLABEL
+ }
+ }
+ if ($ylabel) {
+ if (($xmin<0) && ($xmax>0)) {
+ $return.=(<<ENDYAXISLABELSCRIPT);
+document.ggbApplet$appid.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)");
+document.ggbApplet$appid.setVisible("Ylabel",false);
+document.ggbApplet$appid.evalCommand("Text[\\"$ylabel\\", Ylabel]");
+ENDYAXISLABELSCRIPT
+ } else {
+ $return.=(<<ENDYOFFAXISLABEL);
+document.ggbApplet$appid.evalCommand("UpperLeft=Corner[4]");
+document.ggbApplet$appid.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]");
+ENDYOFFAXISLABEL
+ }
+ }
+ return $return;
+}
+
+#
+# Subroutine to produce background and answer plots
+#
+
+sub plot_script {
+ my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_;
+ my $appid=&appid($id);
+ $label=~s/\W//g;
+ if (($label) && ($label!~/^[A-Za-z]/)) {
+ $label='C'.$label;
+ }
+ my $visible=0;
+ if ($label) {
+ $visible="1";
+ } else {
+ $Apache::functionplotresponse::counter++;
+ $label='C'.$Apache::functionplotresponse::counter;
+ }
+ my $rc=0;
+ my $gc=0;
+ my $bc=0;
+ if ($color) {
+ my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/);
+ $rc=hex($rh);
+ $gc=hex($gh);
+ $bc=hex($bh);
+ }
+ if ($fixed) {
+ return "document.ggbApplet$appid.evalCommand('$label=Function[$function,$xmin,$xmax]');\n".
+ ($visible?'':"document.ggbApplet$appid.setLabelVisible('$label', false);\n").
+ ($color?"document.ggbApplet$appid.setColor('$label',$rc,$gc,$bc);\n":'').
+ ($thickness?"document.ggbApplet$appid.setLineThickness('$label',$thickness);\n":'');
+ } else {
+ return "document.ggbApplet$appid.evalCommand('y=$function');\n";
+ }
+}
+
+#
+# Subroutine to produce objects
+#
+
+sub plotobject_script {
+ my ($id,$label,$x,$y)=@_;
+ my $appid=&appid($id);
+ unless ($label) {
+ $Apache::functionplotresponse::counter++;
+ $label='O'.$Apache::functionplotresponse::counter;
+ }
+ &generate_input_field($id,$label,$x,$y);
+ return "document.ggbApplet$appid.evalCommand('a=1');\n".
+ "document.ggbApplet$appid.setVisible('a', false);\n".
+ "document.ggbApplet$appid.setLabelVisible('a', false);\n".
+ "document.ggbApplet$appid.evalCommand('$label=a*($x,$y)');\n".
+ "document.ggbApplet$appid.setVisible('$label', true);\n".
+ "document.ggbApplet$appid.setLabelVisible('$label', true);\n";
+}
+
+#
+# Subroutine to produce vectors
+#
+
+sub plotvector_script {
+ my ($id,$label,$xs,$ys,$xe,$ye,$xmin,$xmax,$fixed)=@_;
+ my $appid=&appid($id);
+ unless ($label) {
+ $Apache::functionplotresponse::counter++;
+ $label='V'.$Apache::functionplotresponse::counter;
+ }
+ my $startlabel=$label.'Start';
+ my $endlabel=$label.'End';
+ my $pointlabel=$label.'Point';
+ my $pointx=2.*($xmax-$xmin)+$xmax;
+ my $anglelabel=$label.'Angle';
+ return
+ &new_point_coordinate($id,$startlabel,$xs,$ys,$fixed).
+ &new_point_coordinate($id,$endlabel,$xe,$ye,$fixed).
+ (<<ENDVECTOR);
+document.ggbApplet$appid.evalCommand("$label=Vector[$startlabel,$endlabel]");
+document.ggbApplet$appid.setLabelVisible("$label",true);
+document.ggbApplet$appid.setLineThickness("$label",8);
+document.ggbApplet$appid.evalCommand("$pointlabel=($pointx,y($startlabel))");
+document.ggbApplet$appid.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]");
+document.ggbApplet$appid.setLabelVisible("$anglelabel",true);
+document.ggbApplet$appid.setLabelStyle("$anglelabel",VALUE=2);
+ENDVECTOR
+}
+
+#
+# Answer spline display
+#
+# points: x,y,slope_x,slope_y
+
+sub answer_spline_script {
+ my ($id,@points)=@_;
+ my $appid=&appid($id);
+ my $order=int(($#points+1)/4);
+ if ($order<2) { $order=2; }
+ if ($order>8) { $order=8; }
+ $Apache::functionplotresponse::counter++;
+ my $label='CSpline'.$Apache::functionplotresponse::counter;
+ my $output='document.ggbApplet'.$appid.'.evalCommand("'.$label.'=Spline'.$order.'[';
+ for (my $i=0;$i<=$#points;$i+=4) {
+ $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),";
+ }
+ $output=~s/\,$//;
+ $output.=']");'."\n";
+ for (my $i=2; $i<2*$order; $i+=2) {
+ $output.='document.ggbApplet'.$appid.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n";
+ }
+ for (my $i=1; $i<2*$order; $i+=2) {
+ $output.='document.ggbApplet'.$appid.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n";
+ }
+
+ return $output;
+}
+
+#
+# Subroutine that generates code for spline $label based on stored information
+#
+
+sub generate_spline {
+ my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
+ my $appid=&appid($id);
+ my $result='';
+ my $order=$Apache::functionplotresponse::splineorder{$label};
+ my $x=$Apache::functionplotresponse::splineinitx{$label};
+ my $y=$Apache::functionplotresponse::splineinity{$label};
+ my $sx=$Apache::functionplotresponse::splinescalex{$label};
+ my $sy=$Apache::functionplotresponse::splinescaley{$label};
+ my @coords=();
+ foreach my $i (1..$order) {
+ $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed);
+ my $xp=$x;
+ $x+=$sx/(2.*($order-1));
+ push(@coords,$label.'P'.$i);
+ $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed);
+ $x+=$sx/(2.*($order-1));
+ push(@coords,$label.'S'.$i);
+ }
+ $result.='document.ggbApplet'.$appid.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n";
+ return $result;
+}
+
+#
+# Object
+#
+
+sub start_plotobject {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
+ my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval);
+ my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval);
+ my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
+ $label=~s/\W//gs;
+ $label=ucfirst($label);
+ unless ($label) { $label="NewObject"; }
+ if ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
+ unless (defined($x)) { $x=$xmin; }
+ unless (defined($y)) { $y=$ymin; }
+ $result.=&plotobject_script($internalid,$label,$x,$y);
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Plot Object').
+ &Apache::edit::text_arg('Label on Plot:','label',
+ $token,'16').
+ &Apache::edit::text_arg('x:','x',
+ $token,'8').
+ &Apache::edit::text_arg('y:','y',
+ $token,'8').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_plotobject {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+#
+# Vector
+#
+
+sub start_plotvector {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
+ my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval);
+ my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval);
+ my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval);
+ my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval);
+
+ my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
+ $label=~s/\W//gs;
+ $label=ucfirst($label);
+ unless ($label) { $label="NewVector"; }
+ if ($Apache::functionplotresponse::vectorlabels{$label}) {
+ &Apache::lonxml::warning(&mt('Vector labels must be unique: [_1]',$label));
+ }
+ $Apache::functionplotresponse::vectorlabels{$label}=1;
+ if ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
+ unless (defined($tailx)) { $tailx=$xmin; }
+ unless (defined($taily)) { $taily=$ymin; }
+ unless (defined($tipx)) { $tipx=$xmin; }
+ unless (defined($tipy)) { $tipy=$ymin; }
+ my $fixed=0;
+ if ((&Apache::response::show_answer()) || (&Apache::response::check_status()>=2)) { $fixed=1; }
+ $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax,$fixed);
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Plot Vector').
+ &Apache::edit::text_arg('Label on Plot:','label',
+ $token,'16').
+ &Apache::edit::text_arg('Tail x:','tailx',
+ $token,'8').
+ &Apache::edit::text_arg('Tail y:','taily',
+ $token,'8').
+ &Apache::edit::text_arg('Tip x:','tipx',
+ $token,'8').
+ &Apache::edit::text_arg('Tip y:','tipy',
+ $token,'8').
+
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_plotvector {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+
+#
+# Vector sum - have GeoGebra draw a sum of specified vectors to help students draw
+#
+
+sub start_drawvectorsum {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
+ my $internalappid=&appid($internalid);
+ my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval);
+ my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval);
+ my $showvalue=&Apache::lonxml::get_param('showvalue',$parstack,$safeeval);
+ my $vectorlist=&Apache::lonxml::get_param('vectorlist',$parstack,$safeeval);
+ my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
+ $label=~s/\W//gs;
+ $label=ucfirst($label);
+ unless ($label) { $label="NewVector"; }
+ if ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
+ unless (defined($tailx)) { $tailx=$xmin; }
+ unless (defined($taily)) { $taily=$ymin; }
+ unless (defined($vectorlist)) { $vectorlist=''; }
+ my @vectors=split(/\,/,$vectorlist);
+ if ($#vectors>0) {
+ my @sumx=();
+ my @sumy=();
+ foreach my $thisvector (@vectors) {
+ $thisvector=~s/\W//gs;
+ $thisvector=ucfirst($thisvector);
+ unless ($thisvector) { next; }
+ unless ($Apache::functionplotresponse::vectorlabels{$thisvector}) {
+ &Apache::lonxml::warning(&mt('Vectors must be defined before using them for drawing vector sums: [_1]',$thisvector));
+ next;
+ }
+ my $vectorx=$thisvector.'X';
+ my $vectory=$thisvector.'Y';
+ $result.=(<<ENDADDVEC);
+document.ggbApplet$internalappid.evalCommand("$vectorx=x($thisvector)");
+document.ggbApplet$internalappid.evalCommand("$vectory=y($thisvector)");
+document.ggbApplet$internalappid.evalCommand("Include$thisvector$label=Checkbox[]");
+ENDADDVEC
+ push(@sumx,"If[Include$thisvector$label,$vectorx,0]");
+ push(@sumy,"If[Include$thisvector$label,$vectory,0]");
+ }
+ $result.="document.ggbApplet$internalappid.evalCommand(".'"'."xTot$label=".join('+',@sumx).'");'."\n";
+ $result.="document.ggbApplet$internalappid.evalCommand(".'"'."yTot$label=".join('+',@sumy).'");'."\n";
+ my $show=0;
+ if ($showvalue=~/yes/i) {
+ $show=1;
+ }
+ $result.=(<<ENDMAKEVECTOR);
+document.ggbApplet$internalappid.evalCommand("$label=Vector[($tailx,$taily),($tailx+xTot$label,$taily+yTot$label)]");
+document.ggbApplet$internalappid.setLabelVisible("$label",true);
+document.ggbApplet$internalappid.setLineThickness("$label",8);
+document.ggbApplet$internalappid.setColor("$label",255,0,0);
+document.ggbApplet$internalappid.setLabelStyle("$label",VALUE=$show);
+ENDMAKEVECTOR
+ }
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Draw Vector Sum').
+ &Apache::edit::text_arg('Label on Plot:','label',
+ $token,'16').
+ &Apache::edit::text_arg('Tail x:','tailx',
+ $token,'8').
+ &Apache::edit::text_arg('Tail y:','taily',
+ $token,'8').
+ &Apache::edit::select_arg('Show Value:','showvalue',
+ ['yes','no'],$token).'<br />'.
+ &Apache::edit::text_arg('Vector List:','vectorlist',
+ $token,'40').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')});
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','showvalue','vectorlist');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+
+sub end_drawvectorsum {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+
+
+#
+# <backgroundplot function="..." fixed="yes/no" />
+#
+sub start_backgroundplot {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
+ my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);
+ my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval);
+ my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval);
+ my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
+ my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval);
+ $color=~s/[^a-fA-F0-9]//gs;
+ unless (length($color)==6) { $color=''; }
+ my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0);
+
+ unless ($function) { $function="0"; }
+ if ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
+ unless (defined($xinitial)) { $xinitial=$xmin; }
+ unless (defined($xfinal)) { $xfinal=$xmax; }
+ $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal);
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Background Function Plot').
+ &Apache::edit::text_arg('Function:','function',
+ $token,'16').
+ &Apache::edit::text_arg('Initial x-value (optional):','xinitial',
+ $token,'8').
+ &Apache::edit::text_arg('Final x-value (optional):','xfinal',
+ $token,'8').
+ &Apache::edit::text_arg('Label on Plot:','label',
+ $token,'8').
+ &Apache::edit::text_arg('Color (hex code):','color',
+ $token,'8').
+ &Apache::edit::select_arg('Fixed location:','fixed',
+ ['yes','no'],$token).
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'function','label','xinitial','xfinal','color','fixed');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_backgroundplot {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+#
+# <functionplotrule ... />
+#
+sub start_functionplotrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='R'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='R'.$label;
+ }
+
+ if ($target eq 'grade') {
+# Simply remember - in order - for later
+ my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval);
+ my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval);
+ if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) {
+ &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.'));
+ }
+ $beginninglabel=~s/\W//gs;
+ $endinglabel=~s/\W//gs;
+ my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval);
+ $relationship=~s/\W//gs;
+ $relationship=lc($relationship);
+ unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) {
+ &Apache::lonxml::warning(&mt('Rule relationship not defined.'));
+ $relationship='eq';
+ }
+ my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval);
+ unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) {
+ &Apache::lonxml::warning(&mt('Rule derivative not defined.'));
+ $derivative=0;
+ }
+ push(@Apache::functionplotresponse::functionplotrules,join(':',(
+ $label,
+ $derivative,
+ &Apache::lonxml::get_param('xinitial',$parstack,$safeeval),
+ $beginninglabel,
+ &Apache::lonxml::get_param('xfinal',$parstack,$safeeval),
+ $endinglabel,
+ &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval),
+ &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval),
+ $relationship,
+ &Apache::lonxml::get_param('value',$parstack,$safeeval),
+ &Apache::lonxml::get_param('percenterror',$parstack,$safeeval)
+ )));
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Function Plot Graph Rule').
+ &Apache::edit::text_arg('Index/Name:','index',
+ $token,'10').' '.
+ &Apache::edit::select_arg(&mt('Function:'),'derivativeorder',
+ [['0','Function itself'],
+ ['1','First derivative'],
+ ['2','Second derivative'],
+ ['-1','Integral']],$token).'<br />'.
+ &Apache::edit::text_arg('Initial x-value:','xinitial',
+ $token,'8').
+ &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel',
+ [['start','Start of Plot'],
+ ['end','End of Plot']],$token,'8').'<br />'.
+
+ &Apache::edit::text_arg('Final x-value (optional):','xfinal',
+ $token,'8').
+ &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel',
+ [['end','End of Plot']],$token,'8').'<br />'.
+ &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength',
+ $token,'8').
+ &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength',
+ $token,'8').'<br />'.
+ &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship',
+ [['eq','equal'],
+ ['ne','not equal'],
+ ['ge','greater than or equal'],
+ ['gt','greater than'],
+ ['lt','less than'],
+ ['le','less than or equal']],$token).
+ $result.= &Apache::edit::select_or_text_arg('Value:','value',
+ [['undef','not defined']],$token,'30').
+ &Apache::edit::text_arg('Percent error:','percenterror',
+ $token,'8').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) {
+ $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}='';
+ }
+ if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) {
+ $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}='';
+ }
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'index','derivativeorder',
+ 'xinitial','xinitiallabel','xfinal','xfinallabel',
+ 'minimumlength','maximumlength',
+ 'relationship','value','percenterror');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_functionplotrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+
+#
+# <functionplotvectorrule ... />
+#
+sub start_functionplotvectorrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='R'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='R'.$label;
+ }
+
+ if ($target eq 'grade') {
+# Simply remember - in order - for later
+
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+
+ my $vector=&Apache::lonxml::get_param('vector',$parstack,$safeeval);
+ $vector=~s/\W//gs;
+ $vector=ucfirst($vector);
+
+ push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
+ $label,
+ 'vector',
+ $internalid,
+ $vector,
+ &Apache::lonxml::get_param('attachpoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('notattachpoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('tailpoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('tippoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('nottailpoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('nottippoint',$parstack,$safeeval),
+ &Apache::lonxml::get_param('length',$parstack,$safeeval),
+ &Apache::lonxml::get_param('angle',$parstack,$safeeval),
+ &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval),
+ &Apache::lonxml::get_param('angleerror',$parstack,$safeeval),
+ )));
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Rule').
+ &Apache::edit::text_arg('Index/Name:','index',
+ $token,'10').' '.
+ &Apache::edit::text_arg('Vector:','vector',
+ $token,'16').'<br />'.
+ &Apache::edit::text_arg('Attached to object:','attachpoint',
+ $token,'16').
+ &Apache::edit::text_arg('Not attached to object:','notattachpoint',
+ $token,'16').'<br />'.
+ &Apache::edit::text_arg('Tail attached to object:','tailpoint',
+ $token,'16').
+ &Apache::edit::text_arg('Tip attached to object:','tippoint',
+ $token,'16').
+ &Apache::edit::text_arg('Tail not attached to object:','nottailpoint',
+ $token,'16').
+ &Apache::edit::text_arg('Tip not attached to object:','nottippoint',
+ $token,'16').'<br />'.
+ &Apache::edit::text_arg('Length:','length',
+ $token,'30').
+ &Apache::edit::text_arg('Absolute error length:','lengtherror',
+ $token,'8').'<br />'.
+ &Apache::edit::text_arg('Angle:','angle',
+ $token,'30').
+ &Apache::edit::text_arg('Absolute error angle:','angleerror',
+ $token,'8').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ $env{'form.'.&Apache::edit::html_element_name('vector')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('vector')});
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'index','vector','attachpoint','notattachpoint',
+ 'tailpoint','tippoint','nottailpoint','nottipoint',
+ 'length','angle',
+ 'lengtherror','angleerror');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_functionplotvectorrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+#
+# <functionplotvectorsumrule ... />
+#
+sub start_functionplotvectorsumrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='R'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='R'.$label;
+ }
+ if ($target eq 'grade') {
+# Simply remember - in order - for later
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+ my $vectors=&Apache::lonxml::get_param('vectors',$parstack,$safeeval);
+ push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
+ $label,
+ 'sum',
+ $internalid,
+ $vectors,
+ &Apache::lonxml::get_param('length',$parstack,$safeeval),
+ &Apache::lonxml::get_param('angle',$parstack,$safeeval),
+ &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval),
+ &Apache::lonxml::get_param('angleerror',$parstack,$safeeval),
+ )));
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Sum Rule').
+ &Apache::edit::text_arg('Index/Name:','index',
+ $token,'10').' '.
+ &Apache::edit::text_arg('Comma-separated list of vectors:','vectors',
+ $token,'30').'<br />'.
+ &Apache::edit::text_arg('Sum vector length:','length',
+ $token,'30').
+ &Apache::edit::text_arg('Absolute error length:','lengtherror',
+ $token,'8').'<br />'.
+ &Apache::edit::text_arg('Sum vector angle:','angle',
+ $token,'30').
+ &Apache::edit::text_arg('Absolute error angle:','angleerror',
+ $token,'8').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'index','vectors',
+ 'length','angle',
+ 'lengtherror','angleerror');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_functionplotvectorsumrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+#
+# <functionplotcustom ... />
+#
+sub start_functionplotcustomrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='R'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='R'.$label;
+ }
+ &Apache::lonxml::register('Apache::response',('answer'));
+ if ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Function Plot Custom Rule').
+ &Apache::edit::text_arg('Index/Name:','index',$token,'10').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'index');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_functionplotcustomrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ } elsif ($target eq 'grade') {
+# Simply remember - in order - for later
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='R'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='R'.$label;
+ }
+ push(@Apache::functionplotresponse::functionplotvectorrules,join(':',(
+ $label,
+ 'custom',
+ &escape($Apache::response::custom_answer[-1])
+ )));
+ }
+ &Apache::lonxml::deregister('Apache::response',('answer'));
+ return $result;
+}
+
+
+
+#
+# <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." />
+#
+# Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them
+#
+sub start_spline {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'web') {
+ my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval);
+ $Apache::functionplotresponse::counter++;
+ if ($label=~/\W/) {
+ &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.'));
+ }
+ $label=~s/\W//gs;
+ unless ($label) {
+ $label='S'.$Apache::functionplotresponse::counter;
+ } else {
+ $label='S'.$label;
+ }
+ if ($Apache::functionplotresponse::splineorder{$label}) {
+ &Apache::lonxml::error(&mt('Spline indices must be unique.'));
+ }
+
+ my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval);
+ if ($order<2) { $order=2; }
+ if ($order>8) { $order=8; }
+ $Apache::functionplotresponse::splineorder{$label}=$order;
+
+ my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval);
+ unless ($x) { $x=0; }
+ $Apache::functionplotresponse::splineinitx{$label}=$x;
+
+ my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval);
+ unless ($y) { $y=0; }
+ $Apache::functionplotresponse::splineinity{$label}=$y;
+
+ my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval);
+ unless ($sx) { $sx=$order; }
+ $Apache::functionplotresponse::splinescalex{$label}=$sx;
+
+ my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval);
+ unless ($sy) { $sy=2; }
+ $Apache::functionplotresponse::splinescaley{$label}=$sy;
+ } elsif ($target eq 'edit') {
+ $result=&Apache::edit::tag_start($target,$token,'Spline').
+ &Apache::edit::text_arg('Index:','index',
+ $token,'4').' '.
+ &Apache::edit::select_arg('Order:','order',
+ ['2','3','4','5','6','7','8'],$token).' '.
+ &Apache::edit::text_arg('Initial x-value:','initx',
+ $token,'4').' '.
+ &Apache::edit::text_arg('Initial y-value:','inity',
+ $token,'4').' '.
+ &Apache::edit::text_arg('Scale x:','scalex',
+ $token,'4').' '.
+ &Apache::edit::text_arg('Scale y:','scaley',
+ $token,'4').
+ &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'index','order','initx','inity',
+ 'scalex','scaley');
+ if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_spline {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'edit') {
+ $result=&Apache::edit::end_table();
+ }
+ return $result;
+}
+
+sub end_init_script {
+ return (<<ENDENDINIT);
+}
+// ]]>
+</script>
+ENDENDINIT
+}
+
+#
+# Storing and restoring spline coordinates from part answers
+#
+sub decode_previous_answer {
+ my ($answer)=@_;
+ foreach my $coordinate (split(/\,/,$answer)) {
+ my ($key,$value)=split(/\=/,$coordinate);
+ $Apache::functionplotresponse::previous{$key}=$value;
+ }
+}
+
+sub get_answer_from_form_fields {
+ my ($id)=@_;
+ my $answer='';
+ my %coords=();
+ foreach my $field (keys(%env)) {
+ if ($field=~/^form\.HWVAL\_$id/) {
+ $field=~/^form\.(.*)$/;
+ $coords{$1}=$env{$field};
+ }
+ }
+ $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords))));
+ return ($answer,%coords);
+}
+
+#
+# The following functions calculate the cubic-hermite splines server-side
+#
+
+sub cubic_hermite {
+ my ($t,$p1,$s1,$p2,$s2)=@_;
+ return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+
+ (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2);
+}
+
+#
+# d/dt(...)
+#
+
+sub ddt_cubic_hermite {
+ my ($t,$p1,$s1,$p2,$s2)=@_;
+ return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+
+ (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2);
+}
+
+#
+# d^2/dt^2(...)
+#
+
+sub d2dt2_cubic_hermite {
+ my ($t,$p1,$s1,$p2,$s2)=@_;
+ return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+
+ (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2);
+}
+
+#
+# Array index calculation
+#
+sub array_index {
+ my ($xmin,$xmax,$x)=@_;
+ if ($x ne '') {
+ return int(($x-$xmin)/($xmax-$xmin)*400.+0.5);
+ } else {
+ return undef;
+ }
+}
+
+#
+# Populate the arrays
+#
+
+sub populate_arrays {
+ my ($id,$xmin,$xmax,$ymin,$ymax)=@_;
+ for (my $i=0; $i<=400; $i++) {
+ $Apache::functionplotresponse::actualxval[$i]=undef;
+ $Apache::functionplotresponse::func[$i]=undef;
+ $Apache::functionplotresponse::dfuncdx[$i]=undef;
+ $Apache::functionplotresponse::d2funcd2x[$i]=undef;
+ }
+ unless ($xmax>$xmin) { return 'no_func'; }
+# Run over all splines in response
+ foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) {
+ my $xiold=-1;
+# Run over all points in spline
+ for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) {
+ my $ni=$i+1;
+ my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'});
+ my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'});
+# Run in small steps over spline parameter
+ for (my $t=0; $t<=1; $t+=0.0001) {
+ my $xreal=&cubic_hermite($t,@xparms);
+ my $xi=&array_index($xmin,$xmax,$xreal);
+ if ($xi<$xiold) { return 'no_func'; }
+ if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) {
+ $xiold=$xi;
+ $Apache::functionplotresponse::actualxval[$xi]=$xreal;
+# Function value
+ my $funcval=&cubic_hermite($t,@yparms);
+
+# Do we already have a value for this point, and is it different from the new one?
+ if ((defined($Apache::functionplotresponse::func[$xi])) &&
+ (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) {
+ return 'no_func';
+ }
+# Okay, remember the new point
+ $Apache::functionplotresponse::func[$xi]=$funcval;
+
+ if (defined($funcval)) {
+ if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) {
+ $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi;
+ }
+ if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) {
+ $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi;
+ }
+ }
+# Chain rule
+# dy/dx=dy/dt/(dx/dt)
+ my $dxdt=&ddt_cubic_hermite($t,@xparms);
+ if ($dxdt) {
+ $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt;
+# Second derivative
+ $Apache::functionplotresponse::d2funcdx2[$xi]=
+ ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/
+ ($dxdt*$dxdt*$dxdt);
+ }
+ }
+ }
+ }
+ }
+}
+
+#
+# Implementation of <functionplotresponse>
+#
+
sub start_functionplotresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- my $id = &Apache::response::start_response($parstack,$safeeval);
- if ($target eq 'web') {
- $result.=&geogebra_startcode();
- $result.=&geogebra_spline_program();
- $result.=&geogebra_default_parameters();
+# To remember the splines - somehow, they need to come last
+ undef %Apache::functionplotresponse::splineorder;
+ undef %Apache::functionplotresponse::splineinitx;
+ undef %Apache::functionplotresponse::splineinity;
+ undef %Apache::functionplotresponse::splinescalex;
+ undef %Apache::functionplotresponse::splinescaley;
+# Remember input fields, etc
+ undef %Apache::functionplotresponse::previous;
+ $Apache::functionplotresponse::inputfields='';
+ $Apache::functionplotresponse::counter=0;
+# Remember vectors
+ undef %Apache::functionplotresponse::vectorlabels;
+# Remember rules
+ undef @Apache::functionplotresponse::functionplotrules;
+ undef @Apache::functionplotresponse::functionplotvectorrules;
+# Remember failed rules
+ if ($target eq 'grade') {
+ undef @Apache::functionplotresponse::failedrules;
+ }
+# Delete previous awards
+ undef $Apache::functionplotresponse::awarddetail;
+# Part and ID
+ my $partid=$Apache::inputtags::part;
+ my $id=&Apache::response::start_response($parstack,$safeeval);
+# Internal ID to mark the applet and its coordinates
+ my $internalid = $partid.'_'.$id;
+# Previous answer
+ &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"});
+
+# Parameters of <functionplotresponse>
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval);
+ my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
+ my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
+ my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
+ my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval);
+ my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval);
+ if ($target eq 'edit') {
+ $result.=&Apache::edit::start_table($token)
+ .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>'
+ .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
+ .&Apache::edit::deletelist($target,$token).' '
+ .&Apache::edit::insertlist($target,$token).' '
+ .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses')
+ .'</span></td>'
+ ."<td> "
+ .&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row()
+ ."\n";
+ $result.=&Apache::edit::text_arg('Width (pixels):','width',
+ $token,'6').' '.
+ &Apache::edit::text_arg('Height (pixels):','height',
+ $token,'6').'<br />'.
+ &Apache::edit::text_arg('Label x-axis:','xlabel',
+ $token,'6').' '.
+ &Apache::edit::text_arg('Minimum x-value:','xmin',
+ $token,'4').' '.
+ &Apache::edit::text_arg('Maximum x-value:','xmax',
+ $token,'4').' '.
+ &Apache::edit::select_arg('x-axis visible:','xaxisvisible',
+ ['yes','no'],$token).'<br />'.
+ &Apache::edit::text_arg('Label y-axis:','ylabel',
+ $token,'6').' '.
+ &Apache::edit::text_arg('Minimum y-value:','ymin',
+ $token,'4').' '.
+ &Apache::edit::text_arg('Maximum y-value:','ymax',
+ $token,'4').' '.
+ &Apache::edit::select_arg('y-axis visible:','yaxisvisible',
+ ['yes','no'],$token).'<br />'.
+ &Apache::edit::select_arg('Grid visible:','gridvisible',
+ ['yes','no'],$token).'<br />'.
+ &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):',
+ 'answerdisplay',$token,'50').
+ &Apache::edit::end_row().&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'width','height','xlabel','xmin','xmax','ylabel','ymin','ymax',
+ 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay');
+ if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+
+ } elsif ($target eq 'meta') {
+ $result=&Apache::response::meta_package_write('functionplotresponse');
+ } elsif (($target eq 'answer') &&
+ ($env{'form.answer_output_mode'} ne 'tex') &&
+ ($Apache::lonhomework::viewgrades == 'F')) {
+ my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
+ $uname =~s/\W//g;
+ $udom =~s/\W//g;
+ my $function_name =
+ join('_','LONCAPA_scriptvars',$uname,$udom,
+ $env{'form.counter'},$Apache::lonxml::curdepth);
+ &Apache::lonxml::add_script_result(
+ &Apache::loncommon::modal_adhoc_window($function_name,700,500,
+ '<pre>'.$Apache::functionplotresponse::ruleslog.'</pre>',
+ &mt('Rules Log'))."<br />");
}
return $result;
}
+sub compare_rel {
+ my ($relationship,$value,$realval,$tol)=@_;
+# is the real value undefined?
+ unless (defined($realval)) {
+# the real value is not defined
+ if ($relationship eq 'eq') {
+ if ($value eq 'undef') {
+ return 1;
+ } else {
+ return 0;
+ }
+ } elsif ($relationship eq 'ne') {
+ if ($value eq 'undef') {
+ return 0;
+ } else {
+ return 1;
+ }
+ } else {
+ return 0;
+ }
+ }
+
+# is the expected value undefined?
+ if ($value eq 'undef') {
+# but by now we know that the real value is defined
+ return 0;
+ }
+
+# both are defined.
+ if ($relationship eq 'gt') {
+ return ($realval>$value);
+ } elsif ($relationship eq 'ge') {
+ return ($realval>$value-$tol);
+ } elsif ($relationship eq 'lt') {
+ return ($realval<$value);
+ } elsif ($relationship eq 'le') {
+ return ($realval<$value+$tol);
+ } elsif ($relationship eq 'ne') {
+ return (abs($value-$realval)>$tol);
+ } else {
+ return (abs($value-$realval)<$tol);
+ }
+ return 0;
+}
+
+sub addlog {
+ my ($text)=@_;
+ $text=~s/\'/\\\'/g;
+ $Apache::functionplotresponse::ruleslog.=$text.'<br />';
+}
+
+sub actualval {
+ my ($i,$xmin,$xmax)=@_;
+ return $xmin+$i/400.*($xmax-$xmin);
+}
+
+sub fpr_val {
+ my ($arg)=@_;
+ return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg},
+ $Apache::functionplotresponse::fpr_xmin,
+ $Apache::functionplotresponse::fpr_xmax);
+}
+
+sub fpr_f {
+ my ($arg)=@_;
+ return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin,
+ $Apache::functionplotresponse::fpr_xmax,
+ $arg)];
+}
+
+sub fpr_dfdx {
+ my ($arg)=@_;
+ return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin,
+ $Apache::functionplotresponse::fpr_xmax,
+ $arg)];
+}
+
+sub fpr_d2fdx2 {
+ my ($arg)=@_;
+ return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin,
+ $Apache::functionplotresponse::fpr_xmax,
+ $arg)];
+}
+
+sub fpr_vectorcoords {
+ my ($arg)=@_;
+ $arg=~s/\W//gs;
+ $arg=ucfirst($arg);
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+ return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_x'},
+ $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_x'},
+ $env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_y'},
+ $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_y'});
+}
+
+sub fpr_objectcoords {
+ my ($arg)=@_;
+ $arg=~s/\W//gs;
+ $arg=ucfirst($arg);
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+ return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'_x'},
+ $env{'form.HWVAL_'.$internalid.'_'.$arg.'_y'});
+}
+
+sub fpr_vectorlength {
+ my ($arg)=@_;
+ my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg);
+ return sqrt(($xe-$xs)*($xe-$xs)+($ye-$ys)*($ye-$ys));
+}
+
+sub fpr_vectorangle {
+ my ($arg)=@_;
+ my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg);
+ my $angle=57.2957795*atan2(($ye-$ys),($xe-$xs));
+ if ($angle<0) { $angle=360+$angle; }
+ return $angle;
+}
+
+sub vectorcoords {
+ my ($id,$label)=@_;
+ return ($env{'form.HWVAL_'.$id.'_'.$label.'Start_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'End_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'Start_y'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'End_y'});
+}
+
+sub objectcoords {
+ my ($id,$label)=@_;
+ return ($env{'form.HWVAL_'.$id.'_'.$label.'_x'},
+ $env{'form.HWVAL_'.$id.'_'.$label.'_y'});
+}
+
+sub attached {
+ my ($id,$vector,$objects,$xmin,$xmax,$ymin,$ymax)=@_;
+ my ($xs,$xe,$ys,$ye)=&vectorcoords($id,$vector);
+ my $tolx=($xmax-$xmin)/100.;
+ my $toly=($ymax-$ymin)/100.;
+ my $tail=0;
+ my $tip=0;
+ foreach my $obj (split(/\s*\,\s*/,$objects)) {
+ $obj=~s/\W//g;
+ unless ($obj) { next; }
+ $obj=ucfirst($obj);
+ my ($xo,$yo)=&objectcoords($id,$obj);
+ &addlog("Proximity $vector ($xs,$ys)-($xe,$ye) to $obj ($xo,$yo)");
+ if ((abs($xs-$xo)<$tolx) && (abs($ys-$yo)<$toly)) {
+ $tail=1;
+ &addlog("Attached tail: $obj");
+ }
+ if ((abs($xe-$xo)<$tolx) && (abs($ye-$yo)<$toly)) {
+ $tip=1;
+ &addlog("Attached tip: $obj");
+ }
+ }
+ &addlog("Result tail:$tail tip:$tip");
+ return($tail,$tip);
+}
+
+
+sub vectorangle {
+ my ($x,$y)=@_;
+ my $angle=57.2957795*atan2($y,$x);
+ if ($angle<0) { $angle=360+$angle; }
+ return $angle;
+}
+
+sub vectorlength {
+ my ($x,$y)=@_;
+ return sqrt($x*$x+$y*$y);
+}
+
+sub relvector {
+ my ($xs,$xe,$ys,$ye)=@_;
+ return ($xe-$xs,$ye-$ys);
+}
+
+sub plotvectorlength {
+ return &vectorlength(&relvector(&vectorcoords(@_)));
+}
+
+sub plotvectorangle {
+ return &vectorangle(&relvector(&vectorcoords(@_)));
+}
+
+
+#
+# Evaluate a functionplotvectorrule
+#
+
+sub functionplotvectorrulecheck {
+ my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
+ &addlog("=================");
+ my ($label,$type)=split(/\:/,$rule);
+ if ($type eq 'vector') {
+ return &vectorcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval);
+ } elsif ($type eq 'sum') {
+ return &sumcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval);
+ } elsif ($type eq 'custom') {
+ return &customcheck($rule,$safeeval);
+ }
+}
+
+sub vectorcheck {
+ my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
+ my ($label,$type,$id,$vector,
+ $attachpoint,$notattachpoint,
+ $tailpoint,$tippoint,$nottailpoint,$nottippoint,
+ $length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule);
+ &addlog("Vector Rule $label for vector ".$vector);
+ if ($length ne '') {
+ &addlog("Checking for length $length with error $lengtherror");
+ $length=&Apache::run::run($length,$safeeval);
+ &addlog("Length evaluated to $length");
+ my $thislength=&plotvectorlength($id,$vector);
+ &addlog("Found length $thislength");
+ if (abs($thislength-$length)>$lengtherror) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($angle ne '') {
+ &addlog("Checking for angle $angle with error $angleerror");
+ $angle=&Apache::run::run($angle,$safeeval);
+ &addlog("Angle evaluated to $angle");
+ my $thisangle=&plotvectorangle($id,$vector);
+ &addlog("Found angle $thisangle");
+ my $anglediff=abs($thisangle-$angle);
+ &addlog("Angle difference: $anglediff");
+ if ($anglediff>360.-$anglediff) {
+ $anglediff=360.-$anglediff;
+ }
+ &addlog("Smallest angle difference: $anglediff");
+ if ($anglediff>$angleerror) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($attachpoint ne '') {
+ &addlog("Checking attached: ".$attachpoint);
+ my ($tail,$tip)=&attached($id,$vector,$attachpoint,$xmin,$xmax,$ymin,$ymax);
+ unless ($tail || $tip) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($notattachpoint ne '') {
+ &addlog("Checking not attached: ".$notattachpoint);
+ my ($tail,$tip)=&attached($id,$vector,$notattachpoint,$xmin,$xmax,$ymin,$ymax);
+ if ($tail || $tip) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($tailpoint ne '') {
+ &addlog("Checking tail: ".$tailpoint);
+ my ($tail,$tip)=&attached($id,$vector,$tailpoint,$xmin,$xmax,$ymin,$ymax);
+ unless ($tail) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($nottailpoint ne '') {
+ &addlog("Checking not tail: ".$nottailpoint);
+ my ($tail,$tip)=&attached($id,$vector,$nottailpoint,$xmin,$xmax,$ymin,$ymax);
+ if ($tail) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($tippoint ne '') {
+ &addlog("Checking tip: ".$tippoint);
+ my ($tail,$tip)=&attached($id,$vector,$tippoint,$xmin,$xmax,$ymin,$ymax);
+ unless ($tip) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($nottippoint ne '') {
+ &addlog("Checking not tip: ".$nottippoint);
+ my ($tail,$tip)=&attached($id,$vector,$nottippoint,$xmin,$xmax,$ymin,$ymax);
+ if ($tip) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+
+ &addlog("Rule $label passed.");
+ return 1;
+}
+
+sub sumcheck {
+ my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
+ my ($label,$type,$id,$vectors,$length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule);
+ &addlog("Vector Sum Rule $label for vectors ".$vectors);
+ my $sumx=0;
+ my $sumy=0;
+ foreach my $sv (split(/\s*\,\s*/,$vectors)) {
+ my ($rx,$ry)=&relvector(&vectorcoords($id,$sv));
+ $sumx+=$rx;
+ $sumy+=$ry;
+ }
+ &addlog("Sum vector ($sumx,$sumy)");
+ if ($length ne '') {
+ &addlog("Checking length $length with error $lengtherror");
+ $length=&Apache::run::run($length,$safeeval);
+ &addlog("Evaluated to $length");
+ my $thislength=&vectorlength($sumx,$sumy);
+ &addlog("Actual length $thislength");
+ if (abs($length-$thislength)>$lengtherror) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($angle ne '') {
+ &addlog("Checking angle $angle with error $angleerror");
+ $angle=&Apache::run::run($angle,$safeeval);
+ &addlog("Evaluated to $angle");
+ my $thisangle=&vectorangle($sumx,$sumy);
+ &addlog("Actual angle $thisangle");
+ my $anglediff=abs($thisangle-$angle);
+ &addlog("Angle difference: $anglediff");
+ if ($anglediff>360.-$anglediff) {
+ $anglediff=360.-$anglediff;
+ }
+ &addlog("Smallest angle difference: $anglediff");
+ if ($anglediff>$angleerror) {
+ &setfailed($label);
+ return 0;
+ }
+ }
+ &addlog("Rule $label passed.");
+ return 1;
+}
+
+sub customcheck {
+ my ($rule,$safeeval)=@_;
+ my ($label,$type,$prg)=split(/\:/,$rule);
+ &addlog("Custom Rule ".$label);
+ my $result=&Apache::run::run(&unescape($prg),$safeeval);
+ &addlog("Algorithm returned $result");
+ unless ($result) {
+ &setfailed($label);
+ return 0;
+ }
+ &addlog("Rule $label passed.");
+ return 1;
+}
+
+#
+# Evaluate a functionplotrule
+#
+
+sub functionplotrulecheck {
+ my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_;
+
+ my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent)
+ =split(/\:/,$rule);
+ $percent=($percent>0?$percent:5);
+ &addlog("=================");
+ &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value");
+#
+# Evaluate the value
+#
+ if (($value=~/\D/) && ($value ne 'undef')) {
+ $Apache::functionplotresponse::fpr_xmin=$xmin;
+ $Apache::functionplotresponse::fpr_xmax=$xmax;
+ $value=&Apache::run::run($value,$safeeval);
+ &addlog("Value evaluated to $value");
+ }
+
+#
+# Minimum and maximum lengths of the interval
+#
+ if ((defined($minimumlength)) || (defined($maximumlength))) {
+ &addlog("Minimumlength $minimumlength Maximumlength $maximumlength");
+ }
+ my $li=0;
+ my $lh=400;
+
+# Special case: the upper boundary was not defined
+# and needs to be set to the value where
+# the condition is not true anymore => set flag
+
+ my $findupper=0;
+ if (($xfinal eq '')
+ && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}))
+ && ($xfinallabel)) {
+ $findupper=1;
+ }
+
+# if a hard value is set for the boundaries, it overrides the label
+ if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) {
+ $li=&array_index($xmin,$xmax,$xinitial);
+ $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li;
+ }
+ if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) {
+ $lh=&array_index($xmin,$xmax,$xfinal);
+ $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh;
+ }
+# if the label is defined, use it
+ if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) {
+ &addlog("Using lower label $xinitiallabel");
+ $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel};
+ } else {
+ $li=&array_index($xmin,$xmax,$xinitial);
+ }
+ unless ($findupper) {
+ if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) {
+ &addlog("Using upper label $xfinallabel");
+ $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1;
+ } else {
+ $lh=&array_index($xmin,$xmax,$xfinal);
+ }
+ }
+# Basic sanity checks
+ if ($li<0) { $li=0; }
+ if ($lh>400) { $lh=400; }
+ if (($li>$lh) || (!defined($lh))) {
+ $lh=$li;
+ }
+
+ &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=".
+ &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))");
+ if ($findupper) {
+ &addlog("Looking for label $xfinallabel");
+ }
+ my $tol=$percent*($ymax-$ymin)/100;
+ if ($xmax>$xmin) {
+ if ($derivative==2) {
+ $tol=4.*$tol/($xmax-$xmin);
+ } elsif ($derivative==1) {
+ $tol=2.*$tol/($xmax-$xmin);
+ } elsif ($derivative==-1) {
+ $tol=$tol*($xmax-$xmin)/2.;
+ }
+ }
+ my $integral=0;
+ my $binwidth=($xmax-$xmin)/400.;
+ if (($derivative<0) && (!$findupper)) {
+# definite integral, calculate over whole length
+ &addlog("Calculating definite integral");
+ for (my $i=$li; $i<=$lh; $i++) {
+ $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
+ }
+ unless (&compare_rel($relationship,$value,$integral,$tol)) {
+ &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol");
+ &addlog("Rule $label failed.");
+ &setfailed($label);
+ return 0;
+ }
+ } else {
+ for (my $i=$li; $i<=$lh; $i++) {
+ my $val;
+ if ($derivative==2) {
+ $val=$Apache::functionplotresponse::d2funcdx2[$i];
+ } elsif ($derivative==1) {
+ $val=$Apache::functionplotresponse::dfuncdx[$i];
+ } elsif ($derivative==-1) {
+ $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
+ $val=$integral;
+ } else {
+ $val=$Apache::functionplotresponse::func[$i];
+ }
+ unless (&compare_rel($relationship,$value,$val,$tol)) {
+ &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol");
+ &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)");
+ if (($findupper) && ($i>$li)) {
+# Check lengths
+ unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
+# Successfully found a new label, set it
+ $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i;
+ &addlog("Rule $label passed, setting label $xfinallabel");
+ return 1;
+ } else {
+ &addlog("Rule $label failed.");
+ &setfailed($label);
+ return 0;
+ }
+ }
+ }
+ }
+# Corner case where this makes sense: using start or stop as defined labels
+ unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
+ &addlog("Rule $label passed.");
+ return 1;
+}
+
+#
+# check for minimum and maximum lengths
+#
+
+sub checklength {
+ my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_;
+ unless (($minimumlength) || ($maximumlength)) { return 1; }
+ my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax);
+ if ($minimumlength) {
+ if ($length<$minimumlength) {
+ &addlog("Rule $label failed, actual length $length, minimum length $minimumlength");
+ &setfailed($label);
+ return 0;
+ }
+ }
+ if ($maximumlength) {
+ if ($length>$maximumlength) {
+ &addlog("Rule $label failed, actual length $length, maximum length $maximumlength");
+ &setfailed($label);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+sub setfailed {
+ my ($hintlabel)=@_;
+ $hintlabel=~s/^R//;
+ push(@Apache::functionplotresponse::failedrules,$hintlabel);
+ &addlog("Set hint condition $hintlabel");
+}
+
+sub start_functionplotruleset {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ if ($target eq 'edit') {
+ return &Apache::edit::start_table($token).
+ '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>'
+ .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
+ .&Apache::edit::deletelist($target,$token).' '.
+ &Apache::edit::insertlist($target,$token).' '
+ .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules')
+ .'</span></td>'
+ ."<td> "
+ .&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row()
+ ."\n";
+ }
+}
+
+sub end_functionplotruleset {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+
+ if ($target eq 'edit' ) {
+ return &Apache::edit::end_table();
+ } elsif ($target eq 'grade'
+ && &Apache::response::submitted()
+ && $Apache::lonhomework::type ne 'exam') {
+#
+# Actually grade
+#
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
+
+ my $ad='';
+ undef %Apache::functionplotresponse::functionplotrulelabels;
+ $Apache::functionplotresponse::ruleslog='';
+ $Apache::functionplotresponse::functionplotrulelabels{'start'}=400;
+ $Apache::functionplotresponse::functionplotrulelabels{'end'}=0;
+ if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') {
+ $ad='NOT_FUNCTION';
+ } else {
+ &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ".
+ $Apache::functionplotresponse::functionplotrulelabels{'start'}.")");
+ &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ".
+ $Apache::functionplotresponse::functionplotrulelabels{'end'}.")");
+
+# We have a function that we can actually grade, go through the spline rules.
+ foreach my $rule (@Apache::functionplotresponse::functionplotrules) {
+ unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) {
+ $ad='INCORRECT';
+ last;
+ }
+ }
+# And now go through the vector rules
+ foreach my $rule (@Apache::functionplotresponse::functionplotvectorrules) {
+ unless (&functionplotvectorrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) {
+ $ad='INCORRECT';
+ last;
+ }
+ }
+# If it's not wrong, it's correct
+ unless ($ad) { $ad='EXACT_ANS' };
+ }
+ &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules));
+ &addlog("Assigned award detail: $ad");
+# Store for later to be assigned at end_functionplotresponse
+ $Apache::functionplotresponse::awarddetail=$ad;
+ }
+}
+
+
sub end_functionplotresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
&Apache::response::end_response;
+
my $result;
-# if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
- if ($target eq 'web') {
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+
+ if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
+ if ($target eq 'grade'
+ && &Apache::response::submitted()
+ && $Apache::lonhomework::type eq 'exam') {
+
+ &Apache::response::scored_response($partid,$id);
+
+ } elsif ($target eq 'grade'
+ && &Apache::response::submitted()
+ && $Apache::lonhomework::type ne 'exam') {
+ my ($response,%coords)=&get_answer_from_form_fields($internalid);
+ $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
+ my %previous=&Apache::response::check_for_previous($response,$partid,$id);
+#
+# Assign grade
+#
+ my $ad=$Apache::functionplotresponse::awarddetail;
+#
+# Store grading info
+#
+ $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
+ &Apache::response::handle_previous(\%previous,$ad);
+ } elsif ($target eq 'web') {
+ undef @Apache::functionplotresponse::failedrules;
+ }
+ return $result;
+}
+
+sub end_functionplotelements {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result='';
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+ if ($target eq 'edit' ) {
+ $result=&Apache::edit::end_table();
+ } elsif ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
+
+# Are we in show answer mode?
+ my $showanswer=&Apache::response::show_answer();
+ if ($showanswer) {
+# Render answerdisplay
+ my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2);
+ if ($answerdisplay=~/\S/s) {
+ foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) {
+ my @components=split(/\s*\:\s*/,$plot);
+ if ($#components<3) {
+# Just a simple plot
+ my ($func,$xl,$xh)=@components;
+ if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; }
+ if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; }
+ $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6);
+ } else {
+# This is a spline
+ $result.=&answer_spline_script($internalid,@components);
+ }
+ }
+ }
+ }
+ my $fixed=0;
+ if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; }
+# Now is the time to render all of the stored splines
+ foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
+ $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed);
+ }
+# close the init script
+ $result.=&end_init_script();
+# register all splines in this response
+ $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'.
+ join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n";
+ foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
+ $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'.
+ $Apache::functionplotresponse::splineorder{$label}.'" />'."\n";
+ }
+# generate the input fields
+ $result.=$Apache::functionplotresponse::inputfields;
+# actually start the <applet>-tag
+ $result.=&geogebra_startcode($internalid,
+ &Apache::lonxml::get_param('width',$parstack,$safeeval,-2),
+ &Apache::lonxml::get_param('height',$parstack,$safeeval,-2));
+# set default parameters
+ $result.=&geogebra_default_parameters($internalid);
+# close the <applet>-tag
$result.=&geogebra_endcode();
}
return $result;
}
+
+sub boundaries {
+ my ($parstack,$safeeval,$level)=@_;
+ my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level);
+ $xmin=(defined($xmin)?$xmin:-10);
+ my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level);
+ $xmax=(defined($xmax)?$xmax:10);
+ my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level);
+ $ymin=(defined($ymin)?$ymin:-10);
+ my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level);
+ $ymax=(defined($ymax)?$ymax:10);
+ if ($xmax<=$xmin) {
+ $xmax=$xmin+20;
+ }
+ if ($ymax<=$ymin) {
+ $ymax=$ymin+20;
+ }
+ return ($xmin,$xmax,$ymin,$ymax);
+}
+
+sub start_functionplotelements {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $id=$Apache::inputtags::response[-1];
+ my $partid=$Apache::inputtags::part;
+ my $internalid = $partid.'_'.$id;
+
+ if ($target eq 'edit') {
+ return &Apache::edit::start_table($token).
+ '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>'
+ .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
+ .&Apache::edit::deletelist($target,$token).' '.
+ &Apache::edit::insertlist($target,$token).' '
+ .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements')
+ .'</span></td>'
+ ."<td> "
+ .&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row()
+ ."\n";
+ } elsif ($target eq 'web') {
+ my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
+ my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
+ my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
+ my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
+ my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2);
+ my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2);
+
+
+# paste in the update routine to receive stuff back from the applet
+ $result.=&update_script($internalid);
+# start the initscript for this applet
+ $result.=&start_init_script($internalid);
+# put the axis commands inside
+ $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible);
+ $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel);
+# init script is left open
+ }
+ return $result;
+}
1;