loncom/homework/functionplotresponse.pm - view

File: [LON-CAPA] / loncom / homework / functionplotresponse.pm
Revision 1.45: download - view: text, annotated - select for diffs
Tue Nov 23 23:14:20 2010 UTC (13 years, 5 months ago) by www
Branches: MAIN
CVS tags: HEAD

If the axes are off screen, the axis labels are put into the corners

# LearningOnline Network with CAPA # option list style responses # # $Id: functionplotresponse.pm,v 1.45 2010/11/23 23:14:20 www Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # package Apache::functionplotresponse; use strict; use Apache::response(); use Apache::lonlocal; use Apache::lonnet; BEGIN { &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline', 'functionplotrule','functionplotruleset', 'functionplotelements')); } # # 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)=@_; return (<<ENDSTARTCODE); <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar" codebase="/adm/geogebra/" width="722" height="447" MAYSCRIPT> <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/> ENDSTARTCODE } sub geogebra_endcode { return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n"; } # # This is the internal GeoGebra bytecode which defines the spline functions # sub geogebra_spline_program { return (<<ENDSPLINEPROGRAM); <param name="ggbBase64" value="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/> ENDSPLINEPROGRAM } # # The standard set of parameters inside <applet> # sub geogebra_default_parameters { my ($id)=@_; return(<<ENDDEFAULTPARAMETERS); <param name="image" value="/adm/lonIcons/lonanim.gif" /> <param name="boxborder" value="false" /> <param name="centerimage" value="true" /> <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_algos.jar, geogebra_export.jar, geogebra_javascript.jar, jlatexmath.jar, jlm_greek.jar, jlm_cyrillic.jar, geogebra_properties.jar" /> <param name="cache_version" value="3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0" /> <param name="framePossible" value="false" /> <param name="showResetIcon" value="false" /> <param name="showAnimationButton" value="false" /> <param name="enableRightClick" value="false" /> <param name="errorDialogsActive" value="true" /> <param name="enableLabelDrags" value="false" /> <param name="showMenuBar" value="false" /> <param name="showToolBar" value="false" /> <param name="showToolBarHelp" value="false" /> <param name="showAlgebraInput" value="false" /> <param name="enableShiftDragZoom" value="false" /> <param name="allowRescaling" value="false" /> <param name="enableLabelDrags" value="false" /> <param name="ggbOnInitParam" value="applet_$id" /> ENDDEFAULTPARAMETERS } # # This subroutine is called by LON-CAPA at </problem> # Each applet on the page will call function ggbOnInit when it is done loading # This function in turn will call the respective function registered by start_init_script # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit # sub init_script { if ($#Apache::functionplotresponse::callscripts>=0) { my $script=''; foreach my $id (@Apache::functionplotresponse::callscripts) { $script.="if (param=='applet_$id') { loaded_$id=true; }\n"; } $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)). ") { setTimeout('ggbInitAll()',20) }"; my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); return (<<ENDGGBINIT); <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)=@_; return (<<ENDUPDATESCRIPT); <script type="text/javascript"> // <![CDATA[ function updatePointCoordinates_$id(coordinateName) { var x = document.ggbApplet_$id.getXcoord(coordinateName); var y = document.ggbApplet_$id.getYcoord(coordinateName); document.lonhomework.elements["HWVAL_$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,$variable)=@_; return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n"; } # # Set a point coordinate variable # sub set_point_coordinate { my ($id,$variable,$x,$y)=@_; return (<<ENDSETVARIABLE); document.ggbApplet_$id.evalCommand("$variable=($x,$y)"); document.ggbApplet_$id.setLabelVisible("$variable",false); ENDSETVARIABLE } # # Set a slope coordinate variable # sub set_slope_coordinate { my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname)=@_; my $xvariable=$variable.'x'; my $yvariable=$variable.'y'; my $domain=$xmax-$xmin; my $range=$ymax-$ymin; my $xinterval=$domain/100.; my $yinterval=$range/200.; return (<<ENDSETSVARIABLE); document.ggbApplet_$id.evalCommand("$xvariable=Slider[0,$domain,$xinterval]"); document.ggbApplet_$id.setVisible("$xvariable", false); document.ggbApplet_$id.evalCommand("$xvariable=$xrel"); document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]"); document.ggbApplet_$id.setVisible("$yvariable", false); document.ggbApplet_$id.evalCommand("$yvariable=$yrel"); document.ggbApplet_$id.evalCommand("$variable=($xvariable+x($pointname),$yvariable+y($pointname))"); document.ggbApplet_$id.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,$y)=@_; if (defined($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).&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)=@_; # # $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).&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,$gvisible)=@_; return (<<ENDAXESSCRIPT); // changes (xmin, xmax, ymin, ymax) document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax); // makes the (x,y) axis (in)visible document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible); // makes the grid (in)visible document.ggbApplet_$id.setGridVisible($gvisible); ENDAXESSCRIPT } sub axes_label { my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_; unless ($xlabel || $ylabel) { return ''; } my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");'; if ($xlabel) { if (($ymin<0) && ($ymax>0)) { $return.=(<<ENDXAXISLABELSCRIPT); document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)"); document.ggbApplet_$id.setVisible("Xlabel",false); document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]"); ENDXAXISLABELSCRIPT } else { $return.=(<<ENDXOFFAXISLABEL); document.ggbApplet_$id.evalCommand("LowerRight=Corner[2]"); document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]"); ENDXOFFAXISLABEL } } if ($ylabel) { if (($xmin<0) && ($xmax>0)) { $return.=(<<ENDYAXISLABELSCRIPT); document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)"); document.ggbApplet_$id.setVisible("Ylabel",false); document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]"); ENDYAXISLABELSCRIPT } else { $return.=(<<ENDYOFFAXISLABEL); document.ggbApplet_$id.evalCommand("UpperLeft=Corner[4]"); document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]"); ENDYOFFAXISLABEL } } return $return; } sub plot_script { my ($id,$function,$fixed,$label,$xmin,$xmax)=@_; $label=~s/\W//g; if (($label) && ($label!~/^[A-Za-z]/)) { $label='C'.$label; } my $visible=0; if ($label) { $visible="1"; } else { $Apache::functionplotresponse::counter++; $label='C'.$Apache::functionplotresponse::counter; } if ($fixed) { return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n". ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n"); } else { return "document.ggbApplet_$id.evalCommand('y=$function')"; } } # # Subroutine that generates code for spline $label based on stored information # sub generate_spline { my ($id,$label,$xmin,$xmax,$ymin,$ymax)=@_; 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); 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); $x+=$sx/(2.*($order-1)); push(@coords,$label.'S'.$i); } $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 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 $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 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); $result.=&plot_script($internalid,$function,$fixed,$label,$xmin,$xmax); } elsif ($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('Label on Plot:','label', $token,'8'). &Apache::edit::select_arg('Fixed location:','fixed', ['yes','no'],$token). &Apache::edit::end_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'function','label','fixed'); if ($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 ($Apache::functionplotresponse::splineorder{$label}) { &Apache::lonxml::error(&mt('Rule indices must be unique.')); } 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 Evaluation 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,'8'). &Apache::edit::text_arg('Percent error:','percenterror', $token,'8'). &Apache::edit::end_row(); } elsif ($target eq 'modified') { 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 $result; } # # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> # # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them # sub start_spline { my ($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)=@_; 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)) { if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; } $xiold=$xi; $Apache::functionplotresponse::actualxval[$xi]=$xreal; # Function value my $funcval=&cubic_hermite($t,@yparms); $Apache::functionplotresponse::func[$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=''; # 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=''; $Apache::functionplotresponse::counter=0; # Remember rules undef @Apache::functionplotresponse::functionplotrules; # Remember failed rules if ($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) .'</span></td>' ."<td> " .&Apache::edit::end_row() .&Apache::edit::start_spanning_row() ."\n"; $result.=&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'],$token). &Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', 'xaxisvisible','yaxisvisible','gridvisible'); if ($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(); my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); my $start_page = &Apache::loncommon::start_page('Rules Log', undef, {'only_body' => 1, 'bgcolor' => '#FFFFFF', 'js_ready' => 1,}); my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); $uname =~s/\W//g; $udom =~s/\W//g; my $function_name = join('_','LONCAPA_scriptvars',$uname,$udom, $env{'form.counter'},$Apache::lonxml::curdepth); my $rules_var ="<script type=\"text/javascript\"> // <![CDATA[ function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". $Apache::functionplotresponse::ruleslog. "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} // ]]> </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; &Apache::lonxml::add_script_result($rules_var); } 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)=@_; $Apache::functionplotresponse::ruleslog.=$text.'<br />'; } sub actualval { my ($i,$xmin,$xmax)=@_; return $xmin+$i/400.*($xmax-$xmin); } sub functionplotrulecheck { my ($rule,$xmin,$xmax,$ymin,$ymax)=@_; my ($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"); 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."); my $hintlabel=$label; $hintlabel=~s/^R//; push(@Apache::functionplotresponse::failedrules,$hintlabel); &addlog("Set hint condition $hintlabel"); 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 for minimum and maximum lengths my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); if ($minimumlength) { if ($length<$minimumlength) { &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); return 0; } } if ($maximumlength) { if ($length>$maximumlength) { &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); return 0; } } $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; &addlog("Rule $label passed, setting label $xfinallabel"); return 1; } else { &addlog("Rule $label failed."); my $hintlabel=$label; $hintlabel=~s/^R//; push(@Apache::functionplotresponse::failedrules,$hintlabel); &addlog("Set hint condition $hintlabel"); return 0; } } } } &addlog("Rule $label passed."); return 1; } sub start_functionplotruleset { my ($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) .'</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) 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)) { $ad='INCORRECT'; last; } } # If it's not wrong, it's correct unless ($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; 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') { # Now is the time to render all of the stored splines my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax); } # 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); # load the spline bytecode $result.=&geogebra_spline_program(); # 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) .'</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; __END__ =head1 NAME Apache::functionplotresponse.pm; =head1 SYNOPSIS Handles tags associated with accepting function plots. This is part of the LearningOnline Network with CAPA project described at http://www.lon-capa.org. =head1 HANDLER SUBROUTINE start_functionplotresponse() =head1 OTHER SUBROUTINES =over =item end_functionplotresponse() =back =cut