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Diff for /loncom/homework/functionplotresponse.pm between versions 1.5 and 1.53

version 1.5, 2010/10/04 20:47:29 version 1.53, 2011/01/28 16:06:49
Line 31  use strict; Line 31  use strict;
 use Apache::response();  use Apache::response();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::lonnet;  use Apache::lonnet;
    
 BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot'));    &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline',
                                                               'functionplotrule','functionplotruleset',
                                                               'functionplotelements'));
 }  }
   
 #  #
Line 45  sub geogebra_startcode { Line 47  sub geogebra_startcode {
     my ($id)=@_;      my ($id)=@_;
     return (<<ENDSTARTCODE);      return (<<ENDSTARTCODE);
 <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar"  <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
          codebase="/adm/geogebra/"  width="714" height="447" MAYSCRIPT>           codebase="/adm/geogebra/"  width="722" height="447" MAYSCRIPT>
        <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>         <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>
 ENDSTARTCODE  ENDSTARTCODE
 }  }
Line 59  sub geogebra_endcode { Line 61  sub geogebra_endcode {
 #  #
 sub geogebra_spline_program {  sub geogebra_spline_program {
     return (<<ENDSPLINEPROGRAM);      return (<<ENDSPLINEPROGRAM);
 <param name="ggbBase64" value="UEsDBBQACAAIADhQET0AAAAAAAAAAAAAAAASAAAAZ2VvZ2VicmFfbWFjcm8ueG1s7Z1bb+PGGYavk19BMDfexkvP+QCsEqzOuWi7gIveBG1By7RXrSwJsqyY+fWdGZLS2pQtzdqWSPoDApOSqCH5vSTnmdH7bj79en8zCVbJ4nY8m7ZCHKEwSKaj2eV4et0K75ZXH1X46y8/frpOZtfJxSIOrmaLm3jZCmlEQvP+TTxazILRzeXf4pukFZ7PJ+NpQsJgOZtNtrw1TCbz9Vu/f8Gn5/j0Czk9J/8Kg/FoNu2PJ+YrYXD7dfbHb9N/mG+040UrXC7ukvXefpvO75ZBjFrh5zCIsVnEZklaYdssqFnE4Vmx7d/vluuNV9nW7VW29ee228zs9NY0P1qa8w+W42W2//hu+XW2sGuX8dK+Y7ZMJslNMl0Gy3Ru3pnPxtNlGEzii2Rij+SXH3/4ZI86mF38Nxkt82MuPr+KJ7eJ3d8Pn8znndlktghM86bY1+7vhfsbT+ZfY7NmRHCbTuI0WQSreGI/zd8xzf11dpk8eDeejo0m9gRul8ncNoBNCedJcpkrmh2yWZmbJp2y3xzQaDZbXN4G962QRBwhKpEginGFJA2DtBWyiDPNJOVYEiwFEmHwZ9au+7orxPn4z/yQqKvqWV6sHWVrN6JsLMIIESqJ4EIiJiXP6yYoUoQIoYggFPHXq5u54l9cOML58UtHIkW4FJJQIqhQQrrK8UhizqRCmHPCNCeveMU1pXIsYlIrIYS57jBhiOWV4+ZdLZCWGEtMsGfl7ueL5NZ2BUU54ov/3Jse4X6erZ7cfwhawQmJUPCX4P7fJzRCH4KPAS1eE/v65wDbhXnj5LN9xd2nJ5vNyaPN7/ONY/OZ+8bJx4d7+PnhHrLN21vbfriJbbH9IQzOSpfF1d3UPfPDB2fqdDN90/kynSTB8ut49L+pKYjRfCPMWekCygQqGnKX01s9s/Y4uJ2CphtBUz9BUx9BUz9B092Cpr6Cpo0TdDS7uYmnl8HUsVXnbrFKOvFimdyO46k72fGajtz9uvyQUY/T2r0w6LPMQMkeaxCzb54Ps29wKcOjs3yHpXKP7K5H612ve6b20yUXz5V8n4ewe/C+WdHFnkX/pzne2eJRsTcoWirk6vlCrrLm1gVcfec1e9BebNMPoYgSTrUQiGGppGbYdUQ4wuYtxJhW1IAk4xk1bna0z/m5vWRb3dq/5qpbX3BZAZbm9RfbqWVPtM/foVw7HxaUlWv7Kdeun3JSC6KphS2sDb1m3IoizbTVjCjFmcJcH0K69mPpzr4dmdnXbkD31JCTloectDzkpN8OOU+/0NNz+roDT/c47ZgFN4v9xqGdVfbtz+3s2+0OjEvL41IimZLIAK151FAN41IYl771uJSbxx8VWFCsGKUwLoVxKYxLYVwK41IYl8K4tB6jGxiXwrj09celz1FcpxHjBoO53CCvMIMGwoSF3WLcYCCOasSxZlRJX4Z7rm5NoV8REcwpNhUiihJRwK+gDJurVjCmEOHspfB7MVrDr131hd/tPPME/OZksy/8dnbDb8e22NmPldyZNo2VtgqabgT1hl8PQVM/QdPdgqa+gr5r+HX3awG/Tmsf+M3nBn3ht915n/DbycrcKSNUxw+hOrVDKGanWhQnhCshCOO0QCgpsNIKGzYWVBF1CITqvGxqn5Wn9ll5ap/9/uWn0/OfTqMoetMp/SAWrbBrFtIs/Gb4u6usMTfTz91t6VrrdGHGH2b8YcYfZvxrWTmY8YcZf5jxhxl/mPGvxKAHZvxhxr9+ysGM/5Fn/IkkBBFlBg7M3CpvPWxo0IQ/VgprpZDGHBeRKR4JZMeuTCGLxkrBjD/M+MOMf3MEhRn/asIvzPhXc8b/ORboNgKhpBHAkpJiBCsm1JvPvHabglAykgafBGdMmCuUSV3MH3IipZaYMso5961cqccdXa4Ryq76ItT2XvEJhMr7x30Rqrsbobq2xe5+Pa4706b1uFsFTTeCeiOUh6Cpn6DpbkFTX0HfNUK5+7VAKKe1D0LlP6/6IlSn+z4RqpuVuVtGqK4fQnVrh1AP5w+pLAiKYM0lYhxLs8Uh+Kn7WDc/xwQvOyZ42THBj+OYCGLVCntmoc3i+wwUvVXWuDNSiNxIId0t61rv9lyzYKgAQwUYKsBQUbfKgaECDBVgqABDBRgqKjEgAkMFGCrqpxwYKsBQUUf4BUMFGCrAUAGGCjBUVAJ+wVABhorjgAAYKsBQAYaKQyIUGCpqLSgYKqqJUGCoqKCh4jkQ6DWCn3SEsZAGk5j5iwghxS/+UnClNULmD5av+Ptrryn8pCNmmFMwxZH9585w8T+lYYxR7C5lpIl+KT5dJmt8squ++LS9R3wCn/K+cV986u3Gp55tsbdfb+vOtGm97VZB042g3vjkIWjqJ2i6W9DUV9B3jU/ufi3wyWntg0+5O80Xn7q994lPvazMvTI+9fzwqVdzfOJM5PykhJSEmcG8wgjjg0xA9R4r5+dIFWVHqig7UkUlHKmmDdNW3y5NY/2XWVT7q2xvzqoqc6uqyq2q2t3V2f56fbcf8KyCZxU8q+BZrVvlwLMKnlXwrIJnFTyrlRg0gWcVPKv1Uw48q+BZrSP8gmcVPKvgWQXPKnhWKwG/4FkFz+pxQAA8q+BZBc/qIREKPKu1FhQ8q9VEKPCsgmf1CBQAnlXwrIJnFTyr4FkFz2qd8Qk8q5X0rD5HAv1GABRGkZTI1FpwTKnBpmICClGJBFGMKySp7y9Rz5WtKQCFcYSlFJgyJDjXhNM3Iajkak1QdtWXoLZ3ik8QVN497ktQ/d0E1bct9vfrcN2ZNq3D3SpouhHUm6A8BE39BE13C5r6CvquCcrdrwVBOa19CCr39/sSVK//Pgmqn5W5Xyaovh9B9WtHUKYDkoxLzgmhTFNW/IanzAdIKs0wUTw3ob8xQfUfK+eX+pHl1I8sp35kNVM/ZsW0NrBL09zgdWJAg1W2fxcHUnkcSOdxIIyKPBB2N352BP2B2zMEgyAYBMEgCAbVrXIQDIJgEASDIBgEwaBKjKsgGATBoPopB8EgCAbVEX4hGATBIAgGQTAIgkGVgF8IBkEw6DggAMEgCAZBMOiQCAXBoFoLCsGgaiIUBIMgGHQECoBgEASDIBgEwSAIBkEwqM74BMEgCAYdBQMgGATBIAgGHZKgIBhUa0EhGFRNgoJgUCWDQc+hwKAZBEUiojRVhp8kR5SJN0eoQWMQikS2ZIJaq6U2/+ECobDEWprRACJ2EPBShrq6XjOUXfVlqO3d4hMMlXeQ+zLUYDdDDWyLg/26XHemTetytwqabgT1ZigPQVM/QdPdgqa+gr5rhnL3a8FQTmsfhsozkr4M1R+8T4YaZGUelBlq4MdQg/ox1AMfFGcFQpnhvbPoMia0OkgGYPBYOL9stSpnq1U5W61qkq02K6a9oV2aBoevG7YerrIDcqFrnYeuMSpS17hIXZMidU3doyE7psHQHQvEryF+DfFriF/XrXIQv4b4NcSvIX4N8etKjLwgfg3x6/opB/FriF/XEX4hfg3xa4hfQ/wa4teVgF+IX0P8+jggAPFriF9D/PqQCAXx61oLCvHraiIUxK8hfn0ECoD4NcSvIX4N8WuIX0P8us74BPFriF8fBQMgfg3xa4hfH5KgIH5da0Ehfl1NgoL4NcSvj8MBEL+G+DXErw/KUBC/rrWgEL+uJkNB/LqK8evnUGDYDISikdCaGVxShlaZRipHKJudZEgyrTizCd7XY6hhYxiKRXg98+T7Q2epY73+uiYlu+pLSts7vydIKe8G9yWl4W5SGtoWh/t1rO5Mm9axbhU03QjqTUoegqZ+gqa7BU19BW06KW3ttIdZpz0sd9pDv057WL9OmyIuiMYYcY40UWvnDZN2Qh5hxjkR7BC99vAFjOuetAXjurvUh3HzfwfEl3EHwwYy7pP/Us3ZdTK7Ti4W8S//B1BLBwhgj4YNdwsAAFgqAQBQSwMEFAAIAAgAOFARPQAAAAAAAAAAAAAAAAwAAABnZW9nZWJyYS54bWytVE2P2jAQPXd/heV7gTgEgpSwareXrVB7YLuH3pxkCC5OHNkOH/vrO7YT2EXqrQdw/Gb8/ObL2eO5keQI2gjV5jSazCiBtlSVaOuc9nb3OaWP64esBlVDoTnZKd1wm9N4wqjDe7F++JSZvToRLr3Lq4BTTndcGqDEdBp4ZfYA9gPO+7OQguvLz+IPlNbcDIHkue16vMXqHrGyqTbCjNupv7CTwn4TR1GBJlKVOV0kKB2/XkFbUXKZ0/ksICyn7M6IUOyse6XFm2qtc7+R7xAhxIg3wIwwh2VTH2gGfSlFJXjrgvE60ImQk6jsPqfLhCEliHqPWpNoFthKpXS1vRgLDTn/Bq3w7iWbLJaLmMX4wz88dgkWlqSTZJGweTRny9UqWWIKUS8KYYtJzFJkZctZki5SluChf9v81XDcgrVYSkP4GcyYz1qL6ppwt3k2X5W8QZ0SrX3ine21b4N4gLb24m7DvGkX45e2ljBgEVZpD+WhUOdtyFscqF8unT/i9RT1k5JKE+0CRf31sBZh9T5O6NVr5n1m3mPgcKRXe7Ri3sOvRVi9lxRtkDYEHo1Rj1XhZ2GIA5Dcde+YG8kLwGagpG+F3YwbbJrDLVLn/6NvCpya921zpYz+E2U2veu37AC6BRm6qsXC9qo35Oi6N5TO66igFA1ug2FICHfF+oUCAlpBrWHUHUYupMtbP3TuHZxNRxFOg0GtpcW3A+OxLpZt51Kfugm3OF05/c4bMGTD8Y2xF0oqbtHLPR3T98f9iA1vzPovUEsHCEyILqxEAgAAlQQAAFBLAQIUABQACAAIADhQET1gj4YNdwsAAFgqAQASAAAAAAAAAAAAAAAAAAAAAABnZW9nZWJyYV9tYWNyby54bWxQSwECFAAUAAgACAA4UBE9TIgurEQCAACVBAAADAAAAAAAAAAAAAAAAAC3CwAAZ2VvZ2VicmEueG1sUEsFBgAAAAACAAIAegAAADUOAAAAAA=="/>  <param name="ggbBase64" value="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/>
 ENDSPLINEPROGRAM  ENDSPLINEPROGRAM
 }  }
   
Line 72  sub geogebra_default_parameters { Line 74  sub geogebra_default_parameters {
         <param name="image" value="/adm/lonIcons/lonanim.gif"  />          <param name="image" value="/adm/lonIcons/lonanim.gif"  />
         <param name="boxborder" value="false"  />          <param name="boxborder" value="false"  />
         <param name="centerimage" value="true"  />          <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_algos.jar, geogebra_export.jar, geogebra_javascript.jar, jlatexmath.jar, jlm_greek.jar, jlm_cyrillic.jar, geogebra_properties.jar" />
         <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="3.9.115.0, 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="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="framePossible" value="false" />          <param name="framePossible" value="false" />
   
         <param name="showResetIcon" value="false" />          <param name="showResetIcon" value="false" />
Line 101  ENDDEFAULTPARAMETERS Line 102  ENDDEFAULTPARAMETERS
 #  #
   
 sub init_script {  sub init_script {
    if ($Apache::functionplotresponse::callscripts) {     if ($#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()',200) }";
         my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); 
       return (<<ENDGGBINIT);        return (<<ENDGGBINIT);
 <script type="text/javascript">  <script type="text/javascript">
 // <![CDATA[  // <![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) {  function ggbOnInit(param) {
 $Apache::functionplotresponse::callscripts  $script
   }
   function ggbInitAll() {
   $calls
 }  }
 // ]]>  // ]]>
 </script>  </script>
Line 116  ENDGGBINIT Line 130  ENDGGBINIT
   
 #  #
 # Each Geogebra applet is supposed to call this when parameters change  # Each Geogebra applet is supposed to call this when parameters change
   # Changes the hidden fields on the web page
 #  #
 sub update_script {  sub update_script {
     my ($id)=@_;      my ($id)=@_;
Line 125  sub update_script { Line 140  sub update_script {
 function updatePointCoordinates_$id(coordinateName) {  function updatePointCoordinates_$id(coordinateName) {
             var x = document.ggbApplet_$id.getXcoord(coordinateName);              var x = document.ggbApplet_$id.getXcoord(coordinateName);
             var y = document.ggbApplet_$id.getYcoord(coordinateName);              var y = document.ggbApplet_$id.getYcoord(coordinateName);
             coordinateMap_$id\[coordinateName + ".x"] = x;              document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x;
             coordinateMap_$id\[coordinateName + ".y"] = y;              document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y;
         }          }
 // ]]>  // ]]>
 </script>  </script>
Line 139  ENDUPDATESCRIPT Line 154  ENDUPDATESCRIPT
   
 sub update_register {  sub update_register {
    my ($id,$variable)=@_;     my ($id,$variable)=@_;
    return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id')";     return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n";
   }
   
   #
   # Set a point coordinate variable
   #
   sub set_point_coordinate {
      my ($id,$variable,$x,$y,$fixed)=@_;
      my $mult=($fixed?'a*':'');
      return (<<ENDSETVARIABLE);
   document.ggbApplet_$id.evalCommand("a=1");
   document.ggbApplet_$id.evalCommand("$variable=$mult($x,$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,$pointname,$fixed)=@_;
      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_$id.evalCommand("a=1");
   document.ggbApplet_$id.evalCommand("$xvariable=Slider[$xinterval,$domain,$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("$variable=$mult($xvariable+x($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,$fixed)=@_;
       if (defined($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);
 }  }
   
 #  #
Line 148  sub update_register { Line 266  sub update_register {
 #  #
 sub start_init_script {  sub start_init_script {
     my ($id)=@_;      my ($id)=@_;
 # Add a line to ggbOnInit-function which calls the right function based on parameter passed from GeoGebra  # Add id to the list of ggbInit_$id functions that need to be called
     $Apache::functionplotresponse::callscripts.="if (param=='applet_$id') { ggbInit_$id(); }\n";      push(@Apache::functionplotresponse::callscripts,$id);
 # ... and open this function  # ... and open this function
     return (<<ENDSTARTINIT);      return (<<ENDSTARTINIT);
 <script type="text/javascript">  <script type="text/javascript">
 // <![CDATA[  // <![CDATA[
 // variable that will eventually be passed back to the server  // variable that will eventually be passed back to the server
 var coordinateMap_$id = [];  var coordinateMap_$id = [];
   // flag for not loaded yet
   var loaded_$id=false;
 // Init-function for applet  // Init-function for applet
 function ggbInit_$id() {  function ggbInit_$id() {
 ENDSTARTINIT  ENDSTARTINIT
Line 178  sub axes_script { Line 298  sub axes_script {
 ENDAXESSCRIPT  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 {  sub plot_script {
    my ($id,$function)=@_;     my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_;
    return (<<ENDPLOTSCRIPT);     $label=~s/\W//g;
             document.ggbApplet_$id.evalCommand("y=$function");     if (($label) && ($label!~/^[A-Za-z]/)) {
 ENDPLOTSCRIPT        $label='C'.$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 ($fixed) {
         return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n".
                ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n").
                ($color?"document.ggbApplet_$id.setColor('$label',$rc,$gc,$bc);\n":'').
                ($thickness?"document.ggbApplet_$id.setLineThickness('$label',$thickness);\n":'');
      } else {
          return "document.ggbApplet_$id.evalCommand('y=$function');\n";
      }
 }  }
   
 #  #
 # <backgroundplot function="..." />  # Subroutine that generates code for spline $label based on stored information
   #
   
   sub generate_spline {
      my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
      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);
      }
      $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n";
      return $result;
   }
   #
   # <backgroundplot function="..." fixed="yes/no" />
 #  #
 sub start_backgroundplot {  sub start_backgroundplot {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result='';     my $result='';
    my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];     my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
    my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);     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) { $function="0"; }     unless ($function) { $function="0"; }
    if ($target eq 'web') {     if ($target eq 'web') {
       $result.=&plot_script($internalid,$function);        my ($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;     return $result;
 }  }
   
 sub end_backgroundplot {  #
   # <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',
                                        $token,'10').'&nbsp;'.
                &Apache::edit::select_arg(&mt('Function:'),'derivativeorder',
                                     [['0','Function itself'],
                                      ['1','First derivative'],
                                      ['2','Second derivative'],
                                      ['-1','Integral']],$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') {
       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;
   }
   
   
   #
   # <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',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::select_arg('Order:','order',
                                     ['2','3','4','5','6','7','8'],$token).'&nbsp;'.
                &Apache::edit::text_arg('Initial x-value:','initx',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::text_arg('Initial y-value:','inity',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::text_arg('Scale x:','scalex',
                                        $token,'4').'&nbsp;'.
                &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 {  sub end_init_script {
Line 211  sub end_init_script { Line 647  sub end_init_script {
 ENDENDINIT  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 {  sub start_functionplotresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result='';    my $result='';
   my $internalid = $Apache::inputtags::part.'_'.&Apache::response::start_response($parstack,$safeeval);  # To remember the splines - somehow, they need to come last
   my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval);    undef %Apache::functionplotresponse::splineorder;
   $xmin=($xmin?$xmin:-10);    undef %Apache::functionplotresponse::splineinitx;
   my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval);    undef %Apache::functionplotresponse::splineinity;
   $xmax=($xmax?$xmax:10);    undef %Apache::functionplotresponse::splinescalex;
   my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval);    undef %Apache::functionplotresponse::splinescaley;
   $ymin=($ymin?$ymin:-10);  # Remember input fields, etc
   my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval);    undef %Apache::functionplotresponse::previous;
   $ymax=($ymax?$ymax:10);    $Apache::functionplotresponse::inputfields='';
   my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|1/i?'true':'false');    $Apache::functionplotresponse::counter=0;
   my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|1/i?'true':'false');  # Remember rules
   my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|1/i?'true':'false');    undef @Apache::functionplotresponse::functionplotrules;
   # Remember failed rules
   if ($target eq 'web') {    if ($target eq 'grade') {
 # paste in the update routine to receive stuff back from the applet       undef @Apache::functionplotresponse::failedrules;
      $result.=&update_script($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);  
 # init script is left open  
   }    }
   # 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).'&nbsp;&nbsp;&nbsp;'
          .&Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses')
          .'</span></td>'
          ."<td>&nbsp;"
          .&Apache::edit::end_row()
          .&Apache::edit::start_spanning_row()
          ."\n";
       $result.=&Apache::edit::text_arg('Label x-axis:','xlabel',
                                        $token,'6').'&nbsp;'.
                &Apache::edit::text_arg('Minimum x-value:','xmin',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::text_arg('Maximum x-value:','xmax',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::select_arg('x-axis visible:','xaxisvisible',
                                     ['yes','no'],$token).'<br />'.
                &Apache::edit::text_arg('Label y-axis:','ylabel',
                                        $token,'6').'&nbsp;'.
                &Apache::edit::text_arg('Minimum y-value:','ymin',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::text_arg('Maximum y-value:','ymax',
                                        $token,'4').'&nbsp;'.
                &Apache::edit::select_arg('y-axis visible:','yaxisvisible',
                                     ['yes','no'],$token).'<br />'.
                &Apache::edit::select_arg('Grid visible:','gridvisible',
                                     ['yes','no'],$token).'<br />'.
                &Apache::edit::text_arg('Background plot(s) for answer (function:xmin:xmax,function:xmin:xmax,...):',
                                            'answerdisplay',$token,'50');
   
                &Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {
       my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                    $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax',
                                                              'xaxisvisible','yaxisvisible','gridvisible','answerdisplay');
       if ($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();
         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;    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 $value");
      if ((defined($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.");
           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 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 ($label)=@_;
      my $hintlabel=$label;
      $hintlabel=~s/^R//;
      push(@Apache::functionplotresponse::failedrules,$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,$token).'&nbsp;&nbsp;&nbsp;'.
           &Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules')
          .'</span></td>'
          ."<td>&nbsp;"
          .&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 {  sub end_functionplotresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   &Apache::response::end_response;    &Apache::response::end_response;
   
   my $result;    my $result;
   my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];    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;
   }
   
 #  if ($target eq 'edit') { $result=&Apache::edit::end_table(); }  sub end_functionplotelements {
   if ($target eq 'web') {    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 ($func,$xl,$xh)=split(/\s*\:\s*/,$plot);
                 if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; }
                 if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; }
                 $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6);
              }
           }
        }
        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  # close the init script
      $result.=&end_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  # actually start the <applet>-tag
      $result.=&geogebra_startcode($internalid);       $result.=&geogebra_startcode($internalid);
 # load the spline bytecode  # load the spline bytecode
Line 261  sub end_functionplotresponse { Line 1254  sub end_functionplotresponse {
   }    }
   return $result;    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).'&nbsp;&nbsp;&nbsp;'.
           &Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements')
          .'</span></td>'
          ."<td>&nbsp;"
          .&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;  1;
   
Removed from v.1.5  
changed lines
  Added in v.1.53

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