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1: # LearningOnline Network with CAPA 2: # Functionplot responses 3: # 4: # $Id: functionplotresponse.pm,v 1.72 2011/11/18 18:02:04 www Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: 29: package Apache::functionplotresponse; 30: use strict; 31: use Apache::response(); 32: use Apache::lonlocal; 33: use Apache::lonnet; 34: use Apache::run; 35: 36: BEGIN { 37: &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline', 38: 'plotobject','plotvector', 39: 'functionplotrule','functionplotruleset', 40: 'functionplotelements')); 41: } 42: 43: # 44: # There can be a number of applets on a page, each called ggbApplet_$id, 45: # where $id is the "_"-concatenated part and responseid 46: # 47: 48: sub geogebra_startcode { 49: my ($id)=@_; 50: return (<<ENDSTARTCODE); 51: <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar" 52: codebase="/adm/geogebra/" width="722" height="447" MAYSCRIPT> 53: <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/> 54: ENDSTARTCODE 55: } 56: 57: sub geogebra_endcode { 58: return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n"; 59: } 60: 61: # 62: # This is the internal GeoGebra bytecode which defines the spline functions 63: # 64: sub geogebra_spline_program { 65: return (<<ENDSPLINEPROGRAM); 66: <param name="ggbBase64" value="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67: ENDSPLINEPROGRAM 68: } 69: 70: # 71: # The standard set of parameters inside <applet> 72: # 73: sub geogebra_default_parameters { 74: my ($id)=@_; 75: return(<<ENDDEFAULTPARAMETERS); 76: <param name="image" value="/adm/lonIcons/lonanim.gif" /> 77: <param name="boxborder" value="false" /> 78: <param name="centerimage" value="true" /> 79: <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_algos.jar, geogebra_javascript.jar, geogebra_properties.jar, jlatexmath.jar, jlm_cyrillic.jar, jlm_greek.jar" /> 80: <param name="cache_version" value="4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0" /> 81: <param name="framePossible" value="false" /> 82: 83: <param name="showResetIcon" value="false" /> 84: <param name="showAnimationButton" value="false" /> 85: <param name="enableRightClick" value="false" /> 86: <param name="errorDialogsActive" value="true" /> 87: <param name="enableLabelDrags" value="false" /> 88: <param name="showMenuBar" value="false" /> 89: <param name="showToolBar" value="false" /> 90: <param name="showToolBarHelp" value="false" /> 91: <param name="showAlgebraInput" value="false" /> 92: <param name="enableShiftDragZoom" value="false" /> 93: <param name="allowRescaling" value="false" /> 94: <param name="enableLabelDrags" value="false" /> 95: <param name="ggbOnInitParam" value="applet_$id" /> 96: ENDDEFAULTPARAMETERS 97: } 98: 99: # 100: # This subroutine is called by LON-CAPA at </problem> 101: # Each applet on the page will call function ggbOnInit when it is done loading 102: # This function in turn will call the respective function registered by start_init_script 103: # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit 104: # 105: 106: sub init_script { 107: if ($#Apache::functionplotresponse::callscripts>=0) { 108: my $script=''; 109: foreach my $id (@Apache::functionplotresponse::callscripts) { 110: $script.="if (param=='applet_$id') { loaded_$id=true; }\n"; 111: } 112: $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)). 113: ") { setTimeout('ggbInitAll()',200) }"; 114: my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); 115: return (<<ENDGGBINIT); 116: <script type="text/javascript"> 117: // <![CDATA[ 118: // Function that each applet will call when loaded 119: // It will pass "its" parameter 120: // Set flags for when an applet is loaded, wait till all are loaded, and then some 121: function ggbOnInit(param) { 122: $script 123: } 124: function ggbInitAll() { 125: $calls 126: } 127: // ]]> 128: </script> 129: ENDGGBINIT 130: } 131: } 132: 133: # 134: # Each Geogebra applet is supposed to call this when parameters change 135: # Changes the hidden fields on the web page 136: # 137: sub update_script { 138: my ($id)=@_; 139: return (<<ENDUPDATESCRIPT); 140: <script type="text/javascript"> 141: // <![CDATA[ 142: function updatePointCoordinates_$id(coordinateName) { 143: var x = document.ggbApplet_$id.getXcoord(coordinateName); 144: var y = document.ggbApplet_$id.getYcoord(coordinateName); 145: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x; 146: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y; 147: } 148: // ]]> 149: </script> 150: ENDUPDATESCRIPT 151: } 152: 153: # 154: # Register the above update-handler for a variable 155: # 156: 157: sub update_register { 158: my ($id,$variable)=@_; 159: return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n"; 160: } 161: 162: # 163: # Set a point coordinate variable 164: # 165: sub set_point_coordinate { 166: my ($id,$variable,$x,$y,$fixed)=@_; 167: my $mult=($fixed?'a*':''); 168: # Get rid of wild exponents, make sure it's a number 169: $x=1.*$x; 170: $y=1.*$y; 171: # GeoGebra does not understand "E" 172: $x=~s/[e|E]/\*10\^/; 173: $x=~s/\+//; 174: $y=~s/[e|E]/\*10\^/; 175: $y=~s/\+//; 176: return (<<ENDSETVARIABLE); 177: document.ggbApplet_$id.evalCommand("a=1"); 178: document.ggbApplet_$id.evalCommand("$variable=$mult($x,$y)"); 179: document.ggbApplet_$id.setLabelVisible("$variable",false); 180: ENDSETVARIABLE 181: } 182: 183: # 184: # Set a slope coordinate variable 185: # 186: sub set_slope_coordinate { 187: my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_; 188: my $xvariable=$variable.'x'; 189: my $yvariable=$variable.'y'; 190: my $domain=$xmax-$xmin; 191: my $range=$ymax-$ymin; 192: my $xinterval=$domain/100.; 193: my $yinterval=$range/200.; 194: my $mult=($fixed?'a*':''); 195: return (<<ENDSETSVARIABLE); 196: document.ggbApplet_$id.evalCommand("a=1"); 197: document.ggbApplet_$id.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]"); 198: document.ggbApplet_$id.setVisible("$xvariable", false); 199: document.ggbApplet_$id.evalCommand("$xvariable=$xrel"); 200: document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]"); 201: document.ggbApplet_$id.setVisible("$yvariable", false); 202: document.ggbApplet_$id.evalCommand("$yvariable=$yrel"); 203: document.ggbApplet_$id.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))"); 204: document.ggbApplet_$id.setLabelVisible("$variable", false); 205: ENDSETSVARIABLE 206: } 207: 208: # 209: # Input field name for a coordinate variable 210: # 211: 212: sub field_name { 213: my ($id,$variable,$name)=@_; 214: return "HWVAL_$id\_$variable\_$name"; 215: } 216: 217: # 218: # Generate an input field for a coordinate variable 219: # 220: 221: sub generate_input_field { 222: my ($id,$variable,$x,$y)=@_; 223: $Apache::functionplotresponse::inputfields.= 224: "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n". 225: "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n"; 226: } 227: 228: # 229: # Initialize a new point coordinate variable at set a listener on it 230: # 231: sub new_point_coordinate { 232: my ($id,$variable,$x,$y,$fixed)=@_; 233: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 234: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 235: } 236: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 237: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 238: } 239: &generate_input_field($id,$variable,$x,$y); 240: return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable); 241: } 242: 243: # 244: # Initialize a new slope coordinate variable at set a listener on it 245: # 246: sub new_slope_coordinate { 247: my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 248: # 249: # $variable: name of the slope point 250: # $x, $y: coordinates of the slope point 251: # $pointname: name of the associated point point 252: # $xp $yp: coordinates of the point point 253: # 254: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 255: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 256: } 257: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 258: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 259: } 260: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) { 261: $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')}; 262: } 263: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) { 264: $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')}; 265: } 266: 267: &generate_input_field($id,$variable,$x,$y); 268: my $xrel=$x-$xp; 269: my $yrel=$y-$yp; 270: return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable); 271: } 272: 273: # 274: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem> 275: # It then starts the right headers 276: # 277: sub start_init_script { 278: my ($id)=@_; 279: # Add id to the list of ggbInit_$id functions that need to be called 280: push(@Apache::functionplotresponse::callscripts,$id); 281: # ... and open this function 282: return (<<ENDSTARTINIT); 283: <script type="text/javascript"> 284: // <![CDATA[ 285: // variable that will eventually be passed back to the server 286: var coordinateMap_$id = []; 287: // flag for not loaded yet 288: var loaded_$id=false; 289: // Init-function for applet 290: function ggbInit_$id() { 291: ENDSTARTINIT 292: } 293: 294: # 295: # This sets the axes inside ggbInit_$id 296: # 297: 298: sub axes_script { 299: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_; 300: return (<<ENDAXESSCRIPT); 301: // changes (xmin, xmax, ymin, ymax) 302: document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax); 303: 304: // makes the (x,y) axis (in)visible 305: document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible); 306: // makes the grid (in)visible 307: document.ggbApplet_$id.setGridVisible($gvisible); 308: ENDAXESSCRIPT 309: } 310: 311: sub axes_label { 312: my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_; 313: unless ($xlabel || $ylabel) { return ''; } 314: my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");'; 315: if ($xlabel) { 316: if (($ymin<0) && ($ymax>0)) { 317: $return.=(<<ENDXAXISLABELSCRIPT); 318: document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)"); 319: document.ggbApplet_$id.setVisible("Xlabel",false); 320: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]"); 321: ENDXAXISLABELSCRIPT 322: } else { 323: $return.=(<<ENDXOFFAXISLABEL); 324: document.ggbApplet_$id.evalCommand("LowerRight=Corner[2]"); 325: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]"); 326: ENDXOFFAXISLABEL 327: } 328: } 329: if ($ylabel) { 330: if (($xmin<0) && ($xmax>0)) { 331: $return.=(<<ENDYAXISLABELSCRIPT); 332: document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)"); 333: document.ggbApplet_$id.setVisible("Ylabel",false); 334: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]"); 335: ENDYAXISLABELSCRIPT 336: } else { 337: $return.=(<<ENDYOFFAXISLABEL); 338: document.ggbApplet_$id.evalCommand("UpperLeft=Corner[4]"); 339: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]"); 340: ENDYOFFAXISLABEL 341: } 342: } 343: return $return; 344: } 345: 346: # 347: # Subroutine to produce background and answer plots 348: # 349: 350: sub plot_script { 351: my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_; 352: $label=~s/\W//g; 353: if (($label) && ($label!~/^[A-Za-z]/)) { 354: $label='C'.$label; 355: } 356: my $visible=0; 357: if ($label) { 358: $visible="1"; 359: } else { 360: $Apache::functionplotresponse::counter++; 361: $label='C'.$Apache::functionplotresponse::counter; 362: } 363: my $rc=0; 364: my $gc=0; 365: my $bc=0; 366: if ($color) { 367: my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/); 368: $rc=hex($rh); 369: $gc=hex($gh); 370: $bc=hex($bh); 371: } 372: if ($fixed) { 373: return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n". 374: ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n"). 375: ($color?"document.ggbApplet_$id.setColor('$label',$rc,$gc,$bc);\n":''). 376: ($thickness?"document.ggbApplet_$id.setLineThickness('$label',$thickness);\n":''); 377: } else { 378: return "document.ggbApplet_$id.evalCommand('y=$function');\n"; 379: } 380: } 381: 382: # 383: # Subroutine to produce objects 384: # 385: 386: sub plotobject_script { 387: my ($id,$label,$x,$y)=@_; 388: unless ($label) { 389: $Apache::functionplotresponse::counter++; 390: $label='O'.$Apache::functionplotresponse::counter; 391: } 392: return "document.ggbApplet_$id.evalCommand('a=1');\n". 393: "document.ggbApplet_$id.setVisible('a', false);\n". 394: "document.ggbApplet_$id.setLabelVisible('a', false);\n". 395: "document.ggbApplet_$id.evalCommand('$label=a*($x,$y)');\n". 396: "document.ggbApplet_$id.setVisible('$label', true);\n". 397: "document.ggbApplet_$id.setLabelVisible('$label', true);\n"; 398: } 399: 400: # 401: # Subroutine to produce vectors 402: # 403: 404: sub plotvector_script { 405: my ($id,$label,$xs,$ys,$xe,$ye,$xmin,$xmax)=@_; 406: unless ($label) { 407: $Apache::functionplotresponse::counter++; 408: $label='V'.$Apache::functionplotresponse::counter; 409: } 410: my $startlabel=$label.'Start'; 411: my $endlabel=$label.'End'; 412: my $pointlabel=$label.'Point'; 413: my $pointx=2.*($xmax-$xmin)+$xmax; 414: my $anglelabel=$label.'Angle'; 415: return(<<ENDVECTOR); 416: document.ggbApplet_$id.evalCommand("$startlabel=($xs,$ys)"); 417: document.ggbApplet_$id.setVisible("$startlabel",false); 418: document.ggbApplet_$id.setLabelVisible("$startlabel",false); 419: document.ggbApplet_$id.evalCommand("$endlabel=($xe,$ye)"); 420: document.ggbApplet_$id.setLabelVisible("$endlabel",false); 421: document.ggbApplet_$id.evalCommand("$label=Vector[$startlabel,$endlabel]"); 422: document.ggbApplet_$id.setLabelVisible("$label",true); 423: document.ggbApplet_$id.setLineThickness("$label",8); 424: document.ggbApplet_$id.evalCommand("$pointlabel=($pointx,y($startlabel))"); 425: document.ggbApplet_$id.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]"); 426: document.ggbApplet_$id.setLabelVisible("$anglelabel",true); 427: document.ggbApplet_$id.setLabelStyle("$anglelabel",VALUE=2); 428: // Keeps track of points we care about (This should use the same listener function we use in graph problems) 429: //document.ggbApplet1.registerObjectUpdateListener('Gravitystart','updatePointCoordinates'); 430: //document.ggbApplet1.registerObjectUpdateListener('Gravityend','updatePointCoordinates'); 431: //document.ggbApplet1.registerObjectUpdateListener('GravityAngle','updatePointCoordinates'); 432: ENDVECTOR 433: } 434: 435: # 436: # Answer spline display 437: # 438: # points: x,y,slope_x,slope_y 439: 440: sub answer_spline_script { 441: my ($id,@points)=@_; 442: my $order=int(($#points+1)/4); 443: if ($order<2) { $order=2; } 444: if ($order>8) { $order=8; } 445: $Apache::functionplotresponse::counter++; 446: my $label='CSpline'.$Apache::functionplotresponse::counter; 447: my $output='document.ggbApplet_'.$id.'.evalCommand("'.$label.'=Spline'.$order.'['; 448: for (my $i=0;$i<=$#points;$i+=4) { 449: $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),"; 450: } 451: $output=~s/\,$//; 452: $output.=']");'."\n"; 453: for (my $i=2; $i<2*$order; $i+=2) { 454: $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n"; 455: } 456: for (my $i=1; $i<2*$order; $i+=2) { 457: $output.='document.ggbApplet_'.$id.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n"; 458: } 459: 460: return $output; 461: } 462: 463: # 464: # Subroutine that generates code for spline $label based on stored information 465: # 466: 467: sub generate_spline { 468: my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 469: my $result=''; 470: my $order=$Apache::functionplotresponse::splineorder{$label}; 471: my $x=$Apache::functionplotresponse::splineinitx{$label}; 472: my $y=$Apache::functionplotresponse::splineinity{$label}; 473: my $sx=$Apache::functionplotresponse::splinescalex{$label}; 474: my $sy=$Apache::functionplotresponse::splinescaley{$label}; 475: my @coords=(); 476: foreach my $i (1..$order) { 477: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed); 478: my $xp=$x; 479: $x+=$sx/(2.*($order-1)); 480: push(@coords,$label.'P'.$i); 481: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed); 482: $x+=$sx/(2.*($order-1)); 483: push(@coords,$label.'S'.$i); 484: } 485: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 486: return $result; 487: } 488: 489: # 490: # Object 491: # 492: 493: sub start_plotobject { 494: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 495: my $result=''; 496: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 497: my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval); 498: my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval); 499: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 500: $label=~s/\W//gs; 501: $label=ucfirst($label); 502: unless ($label) { $label="NewObject"; } 503: if ($target eq 'web') { 504: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 505: unless (defined($x)) { $x=$xmin; } 506: unless (defined($y)) { $y=$ymin; } 507: $result.=&plotobject_script($internalid,$label,$x,$y); 508: } elsif ($target eq 'edit') { 509: $result=&Apache::edit::tag_start($target,$token,'Plot Object'). 510: &Apache::edit::text_arg('Label on Plot:','label', 511: $token,'16'). 512: &Apache::edit::text_arg('x:','x', 513: $token,'8'). 514: &Apache::edit::text_arg('y:','y', 515: $token,'8'). 516: &Apache::edit::end_row(); 517: } elsif ($target eq 'modified') { 518: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y'); 519: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 520: } 521: return $result; 522: } 523: 524: sub end_plotobject { 525: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 526: my $result=''; 527: if ($target eq 'edit') { 528: $result=&Apache::edit::end_table(); 529: } 530: return $result; 531: } 532: 533: # 534: # Vector 535: # 536: 537: sub start_plotvector { 538: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 539: my $result=''; 540: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 541: my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval); 542: my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval); 543: my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval); 544: my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval); 545: 546: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 547: $label=~s/\W//gs; 548: $label=ucfirst($label); 549: unless ($label) { $label="NewVector"; } 550: if ($target eq 'web') { 551: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 552: unless (defined($tailx)) { $tailx=$xmin; } 553: unless (defined($taily)) { $taily=$ymin; } 554: unless (defined($tipx)) { $tipx=$xmin; } 555: unless (defined($tipy)) { $tipy=$ymin; } 556: $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax); 557: } elsif ($target eq 'edit') { 558: $result=&Apache::edit::tag_start($target,$token,'Plot Vector'). 559: &Apache::edit::text_arg('Label on Plot:','label', 560: $token,'16'). 561: &Apache::edit::text_arg('Tail x:','tailx', 562: $token,'8'). 563: &Apache::edit::text_arg('Tail y:','taily', 564: $token,'8'). 565: &Apache::edit::text_arg('Tip x:','tipx', 566: $token,'8'). 567: &Apache::edit::text_arg('Tip y:','tipy', 568: $token,'8'). 569: 570: &Apache::edit::end_row(); 571: } elsif ($target eq 'modified') { 572: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy'); 573: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 574: } 575: return $result; 576: } 577: 578: sub end_plotvector { 579: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 580: my $result=''; 581: if ($target eq 'edit') { 582: $result=&Apache::edit::end_table(); 583: } 584: return $result; 585: } 586: 587: 588: 589: # 590: # <backgroundplot function="..." fixed="yes/no" /> 591: # 592: sub start_backgroundplot { 593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 594: my $result=''; 595: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 596: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); 597: my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval); 598: my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval); 599: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 600: my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval); 601: $color=~s/[^a-fA-F0-9]//gs; 602: unless (length($color)==6) { $color=''; } 603: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); 604: 605: unless ($function) { $function="0"; } 606: if ($target eq 'web') { 607: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 608: unless (defined($xinitial)) { $xinitial=$xmin; } 609: unless (defined($xfinal)) { $xfinal=$xmax; } 610: $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal); 611: } elsif ($target eq 'edit') { 612: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot'). 613: &Apache::edit::text_arg('Function:','function', 614: $token,'16'). 615: &Apache::edit::text_arg('Initial x-value (optional):','xinitial', 616: $token,'8'). 617: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 618: $token,'8'). 619: &Apache::edit::text_arg('Label on Plot:','label', 620: $token,'8'). 621: &Apache::edit::text_arg('Color (hex code):','color', 622: $token,'8'). 623: &Apache::edit::select_arg('Fixed location:','fixed', 624: ['yes','no'],$token). 625: &Apache::edit::end_row(); 626: } elsif ($target eq 'modified') { 627: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 628: $safeeval,'function','label','xinitial','xfinal','color','fixed'); 629: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 630: } 631: return $result; 632: } 633: 634: sub end_backgroundplot { 635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 636: my $result=''; 637: if ($target eq 'edit') { 638: $result=&Apache::edit::end_table(); 639: } 640: return $result; 641: } 642: 643: # 644: # <functionplotrule ... /> 645: # 646: sub start_functionplotrule { 647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 648: my $result=''; 649: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 650: $Apache::functionplotresponse::counter++; 651: if ($label=~/\W/) { 652: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 653: } 654: $label=~s/\W//gs; 655: unless ($label) { 656: $label='R'.$Apache::functionplotresponse::counter; 657: } else { 658: $label='R'.$label; 659: } 660: if ($Apache::functionplotresponse::splineorder{$label}) { 661: &Apache::lonxml::error(&mt('Rule indices must be unique.')); 662: } 663: 664: 665: if ($target eq 'grade') { 666: # Simply remember - in order - for later 667: my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval); 668: my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval); 669: if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) { 670: &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.')); 671: } 672: $beginninglabel=~s/\W//gs; 673: $endinglabel=~s/\W//gs; 674: my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval); 675: $relationship=~s/\W//gs; 676: $relationship=lc($relationship); 677: unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) { 678: &Apache::lonxml::warning(&mt('Rule relationship not defined.')); 679: $relationship='eq'; 680: } 681: my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval); 682: unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) { 683: &Apache::lonxml::warning(&mt('Rule derivative not defined.')); 684: $derivative=0; 685: } 686: push(@Apache::functionplotresponse::functionplotrules,join(':',( 687: $label, 688: $derivative, 689: &Apache::lonxml::get_param('xinitial',$parstack,$safeeval), 690: $beginninglabel, 691: &Apache::lonxml::get_param('xfinal',$parstack,$safeeval), 692: $endinglabel, 693: &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval), 694: &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval), 695: $relationship, 696: &Apache::lonxml::get_param('value',$parstack,$safeeval), 697: &Apache::lonxml::get_param('percenterror',$parstack,$safeeval) 698: ))); 699: } elsif ($target eq 'edit') { 700: $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule'). 701: &Apache::edit::text_arg('Index/Name:','index', 702: $token,'10').' '. 703: &Apache::edit::select_arg(&mt('Function:'),'derivativeorder', 704: [['0','Function itself'], 705: ['1','First derivative'], 706: ['2','Second derivative'], 707: ['-1','Integral']],$token).'<br />'. 708: &Apache::edit::text_arg('Initial x-value:','xinitial', 709: $token,'8'). 710: &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel', 711: [['start','Start of Plot'], 712: ['end','End of Plot']],$token,'8').'<br />'. 713: 714: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 715: $token,'8'). 716: &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel', 717: [['end','End of Plot']],$token,'8').'<br />'. 718: &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength', 719: $token,'8'). 720: &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength', 721: $token,'8').'<br />'. 722: &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship', 723: [['eq','equal'], 724: ['ne','not equal'], 725: ['ge','greater than or equal'], 726: ['gt','greater than'], 727: ['lt','less than'], 728: ['le','less than or equal']],$token). 729: $result.= &Apache::edit::select_or_text_arg('Value:','value', 730: [['undef','not defined']],$token,'30'). 731: &Apache::edit::text_arg('Percent error:','percenterror', 732: $token,'8'). 733: &Apache::edit::end_row(); 734: } elsif ($target eq 'modified') { 735: if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) { 736: $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}=''; 737: } 738: if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) { 739: $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}=''; 740: } 741: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 742: $safeeval,'index','derivativeorder', 743: 'xinitial','xinitiallabel','xfinal','xfinallabel', 744: 'minimumlength','maximumlength', 745: 'relationship','value','percenterror'); 746: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 747: } 748: return $result; 749: } 750: 751: sub end_functionplotrule { 752: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 753: my $result=''; 754: if ($target eq 'edit') { 755: $result=&Apache::edit::end_table(); 756: } 757: return $result; 758: } 759: 760: 761: # 762: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> 763: # 764: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them 765: # 766: sub start_spline { 767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 768: my $result=''; 769: if ($target eq 'web') { 770: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 771: $Apache::functionplotresponse::counter++; 772: if ($label=~/\W/) { 773: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.')); 774: } 775: $label=~s/\W//gs; 776: unless ($label) { 777: $label='S'.$Apache::functionplotresponse::counter; 778: } else { 779: $label='S'.$label; 780: } 781: if ($Apache::functionplotresponse::splineorder{$label}) { 782: &Apache::lonxml::error(&mt('Spline indices must be unique.')); 783: } 784: 785: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); 786: if ($order<2) { $order=2; } 787: if ($order>8) { $order=8; } 788: $Apache::functionplotresponse::splineorder{$label}=$order; 789: 790: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); 791: unless ($x) { $x=0; } 792: $Apache::functionplotresponse::splineinitx{$label}=$x; 793: 794: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); 795: unless ($y) { $y=0; } 796: $Apache::functionplotresponse::splineinity{$label}=$y; 797: 798: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); 799: unless ($sx) { $sx=$order; } 800: $Apache::functionplotresponse::splinescalex{$label}=$sx; 801: 802: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); 803: unless ($sy) { $sy=2; } 804: $Apache::functionplotresponse::splinescaley{$label}=$sy; 805: } elsif ($target eq 'edit') { 806: $result=&Apache::edit::tag_start($target,$token,'Spline'). 807: &Apache::edit::text_arg('Index:','index', 808: $token,'4').' '. 809: &Apache::edit::select_arg('Order:','order', 810: ['2','3','4','5','6','7','8'],$token).' '. 811: &Apache::edit::text_arg('Initial x-value:','initx', 812: $token,'4').' '. 813: &Apache::edit::text_arg('Initial y-value:','inity', 814: $token,'4').' '. 815: &Apache::edit::text_arg('Scale x:','scalex', 816: $token,'4').' '. 817: &Apache::edit::text_arg('Scale y:','scaley', 818: $token,'4'). 819: &Apache::edit::end_row(); 820: } elsif ($target eq 'modified') { 821: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 822: $safeeval,'index','order','initx','inity', 823: 'scalex','scaley'); 824: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 825: } 826: return $result; 827: } 828: 829: sub end_spline { 830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 831: my $result=''; 832: if ($target eq 'edit') { 833: $result=&Apache::edit::end_table(); 834: } 835: return $result; 836: } 837: 838: sub end_init_script { 839: return (<<ENDENDINIT); 840: } 841: // ]]> 842: </script> 843: ENDENDINIT 844: } 845: 846: # 847: # Storing and restoring spline coordinates from part answers 848: # 849: sub decode_previous_answer { 850: my ($answer)=@_; 851: foreach my $coordinate (split(/\,/,$answer)) { 852: my ($key,$value)=split(/\=/,$coordinate); 853: $Apache::functionplotresponse::previous{$key}=$value; 854: } 855: } 856: 857: sub get_answer_from_form_fields { 858: my ($id)=@_; 859: my $answer=''; 860: my %coords=(); 861: foreach my $field (keys(%env)) { 862: if ($field=~/^form\.HWVAL\_$id/) { 863: $field=~/^form\.(.*)$/; 864: $coords{$1}=$env{$field}; 865: } 866: } 867: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); 868: return ($answer,%coords); 869: } 870: 871: # 872: # The following functions calculate the cubic-hermite splines server-side 873: # 874: 875: sub cubic_hermite { 876: my ($t,$p1,$s1,$p2,$s2)=@_; 877: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+ 878: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2); 879: } 880: 881: # 882: # d/dt(...) 883: # 884: 885: sub ddt_cubic_hermite { 886: my ($t,$p1,$s1,$p2,$s2)=@_; 887: return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+ 888: (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2); 889: } 890: 891: # 892: # d^2/dt^2(...) 893: # 894: 895: sub d2dt2_cubic_hermite { 896: my ($t,$p1,$s1,$p2,$s2)=@_; 897: return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+ 898: (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2); 899: } 900: 901: # 902: # Array index calculation 903: # 904: sub array_index { 905: my ($xmin,$xmax,$x)=@_; 906: if ($x ne '') { 907: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5); 908: } else { 909: return undef; 910: } 911: } 912: 913: # 914: # Populate the arrays 915: # 916: 917: sub populate_arrays { 918: my ($id,$xmin,$xmax,$ymin,$ymax)=@_; 919: for (my $i=0; $i<=400; $i++) { 920: $Apache::functionplotresponse::actualxval[$i]=undef; 921: $Apache::functionplotresponse::func[$i]=undef; 922: $Apache::functionplotresponse::dfuncdx[$i]=undef; 923: $Apache::functionplotresponse::d2funcd2x[$i]=undef; 924: } 925: unless ($xmax>$xmin) { return 'no_func'; } 926: # Run over all splines in response 927: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) { 928: my $xiold=-1; 929: # Run over all points in spline 930: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) { 931: my $ni=$i+1; 932: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'}, 933: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'}, 934: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'}, 935: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'}); 936: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'}, 937: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'}, 938: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'}, 939: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'}); 940: # Run in small steps over spline parameter 941: for (my $t=0; $t<=1; $t+=0.0001) { 942: my $xreal=&cubic_hermite($t,@xparms); 943: my $xi=&array_index($xmin,$xmax,$xreal); 944: if ($xi<$xiold) { return 'no_func'; } 945: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { 946: $xiold=$xi; 947: $Apache::functionplotresponse::actualxval[$xi]=$xreal; 948: # Function value 949: my $funcval=&cubic_hermite($t,@yparms); 950: 951: # Do we already have a value for this point, and is it different from the new one? 952: if ((defined($Apache::functionplotresponse::func[$xi])) && 953: (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) { 954: return 'no_func'; 955: } 956: # Okay, remember the new point 957: $Apache::functionplotresponse::func[$xi]=$funcval; 958: 959: if (defined($funcval)) { 960: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { 961: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; 962: } 963: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) { 964: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi; 965: } 966: } 967: # Chain rule 968: # dy/dx=dy/dt/(dx/dt) 969: my $dxdt=&ddt_cubic_hermite($t,@xparms); 970: if ($dxdt) { 971: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt; 972: # Second derivative 973: $Apache::functionplotresponse::d2funcdx2[$xi]= 974: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/ 975: ($dxdt*$dxdt*$dxdt); 976: } 977: } 978: } 979: } 980: } 981: } 982: 983: # 984: # Implementation of <functionplotresponse> 985: # 986: 987: sub start_functionplotresponse { 988: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 989: my $result=''; 990: # To remember the splines - somehow, they need to come last 991: undef %Apache::functionplotresponse::splineorder; 992: undef %Apache::functionplotresponse::splineinitx; 993: undef %Apache::functionplotresponse::splineinity; 994: undef %Apache::functionplotresponse::splinescalex; 995: undef %Apache::functionplotresponse::splinescaley; 996: # Remember input fields, etc 997: undef %Apache::functionplotresponse::previous; 998: $Apache::functionplotresponse::inputfields=''; 999: $Apache::functionplotresponse::counter=0; 1000: # Remember rules 1001: undef @Apache::functionplotresponse::functionplotrules; 1002: # Remember failed rules 1003: if ($target eq 'grade') { 1004: undef @Apache::functionplotresponse::failedrules; 1005: } 1006: # Delete previous awards 1007: undef $Apache::functionplotresponse::awarddetail; 1008: # Part and ID 1009: my $partid=$Apache::inputtags::part; 1010: my $id=&Apache::response::start_response($parstack,$safeeval); 1011: # Internal ID to mark the applet and its coordinates 1012: my $internalid = $partid.'_'.$id; 1013: # Previous answer 1014: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); 1015: 1016: # Parameters of <functionplotresponse> 1017: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval); 1018: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1019: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1020: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1021: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval); 1022: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval); 1023: if ($target eq 'edit') { 1024: $result.=&Apache::edit::start_table($token) 1025: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>' 1026: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1027: .&Apache::edit::deletelist($target,$token).'   ' 1028: .&Apache::edit::insertlist($target,$token).'   ' 1029: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses') 1030: .'</span></td>' 1031: ."<td> " 1032: .&Apache::edit::end_row() 1033: .&Apache::edit::start_spanning_row() 1034: ."\n"; 1035: $result.=&Apache::edit::text_arg('Label x-axis:','xlabel', 1036: $token,'6').' '. 1037: &Apache::edit::text_arg('Minimum x-value:','xmin', 1038: $token,'4').' '. 1039: &Apache::edit::text_arg('Maximum x-value:','xmax', 1040: $token,'4').' '. 1041: &Apache::edit::select_arg('x-axis visible:','xaxisvisible', 1042: ['yes','no'],$token).'<br />'. 1043: &Apache::edit::text_arg('Label y-axis:','ylabel', 1044: $token,'6').' '. 1045: &Apache::edit::text_arg('Minimum y-value:','ymin', 1046: $token,'4').' '. 1047: &Apache::edit::text_arg('Maximum y-value:','ymax', 1048: $token,'4').' '. 1049: &Apache::edit::select_arg('y-axis visible:','yaxisvisible', 1050: ['yes','no'],$token).'<br />'. 1051: &Apache::edit::select_arg('Grid visible:','gridvisible', 1052: ['yes','no'],$token).'<br />'. 1053: &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):', 1054: 'answerdisplay',$token,'50'). 1055: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 1056: } elsif ($target eq 'modified') { 1057: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 1058: $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', 1059: 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay'); 1060: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 1061: 1062: } elsif ($target eq 'meta') { 1063: $result=&Apache::response::meta_package_write('functionplotresponse'); 1064: } elsif (($target eq 'answer') && 1065: ($env{'form.answer_output_mode'} ne 'tex') && 1066: ($Apache::lonhomework::viewgrades == 'F')) { 1067: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); 1068: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); 1069: my $start_page = &Apache::loncommon::start_page('Rules Log', undef, 1070: {'only_body' => 1, 1071: 'bgcolor' => '#FFFFFF', 1072: 'js_ready' => 1,}); 1073: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); 1074: $uname =~s/\W//g; 1075: $udom =~s/\W//g; 1076: my $function_name = 1077: join('_','LONCAPA_scriptvars',$uname,$udom, 1078: $env{'form.counter'},$Apache::lonxml::curdepth); 1079: my $rules_var ="<script type=\"text/javascript\"> 1080: // <![CDATA[ 1081: function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". 1082: $Apache::functionplotresponse::ruleslog. 1083: "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} 1084: // ]]> 1085: </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; 1086: &Apache::lonxml::add_script_result($rules_var); 1087: } 1088: 1089: return $result; 1090: } 1091: 1092: sub compare_rel { 1093: my ($relationship,$value,$realval,$tol)=@_; 1094: # is the real value undefined? 1095: unless (defined($realval)) { 1096: # the real value is not defined 1097: if ($relationship eq 'eq') { 1098: if ($value eq 'undef') { 1099: return 1; 1100: } else { 1101: return 0; 1102: } 1103: } elsif ($relationship eq 'ne') { 1104: if ($value eq 'undef') { 1105: return 0; 1106: } else { 1107: return 1; 1108: } 1109: } else { 1110: return 0; 1111: } 1112: } 1113: 1114: # is the expected value undefined? 1115: if ($value eq 'undef') { 1116: # but by now we know that the real value is defined 1117: return 0; 1118: } 1119: 1120: # both are defined. 1121: if ($relationship eq 'gt') { 1122: return ($realval>$value); 1123: } elsif ($relationship eq 'ge') { 1124: return ($realval>$value-$tol); 1125: } elsif ($relationship eq 'lt') { 1126: return ($realval<$value); 1127: } elsif ($relationship eq 'le') { 1128: return ($realval<$value+$tol); 1129: } elsif ($relationship eq 'ne') { 1130: return (abs($value-$realval)>$tol); 1131: } else { 1132: return (abs($value-$realval)<$tol); 1133: } 1134: return 0; 1135: } 1136: 1137: sub addlog { 1138: my ($text)=@_; 1139: $text=~s/\'/\\\'/g; 1140: $Apache::functionplotresponse::ruleslog.=$text.'<br />'; 1141: } 1142: 1143: sub actualval { 1144: my ($i,$xmin,$xmax)=@_; 1145: return $xmin+$i/400.*($xmax-$xmin); 1146: } 1147: 1148: sub fpr_val { 1149: my ($arg)=@_; 1150: return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg}, 1151: $Apache::functionplotresponse::fpr_xmin, 1152: $Apache::functionplotresponse::fpr_xmax); 1153: } 1154: 1155: sub fpr_f { 1156: my ($arg)=@_; 1157: return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin, 1158: $Apache::functionplotresponse::fpr_xmax, 1159: $arg)]; 1160: } 1161: 1162: sub fpr_dfdx { 1163: my ($arg)=@_; 1164: return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin, 1165: $Apache::functionplotresponse::fpr_xmax, 1166: $arg)]; 1167: } 1168: 1169: sub fpr_d2fdx2 { 1170: my ($arg)=@_; 1171: return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin, 1172: $Apache::functionplotresponse::fpr_xmax, 1173: $arg)]; 1174: } 1175: 1176: sub functionplotrulecheck { 1177: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1178: 1179: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) 1180: =split(/\:/,$rule); 1181: $percent=($percent>0?$percent:5); 1182: &addlog("================="); 1183: &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value"); 1184: # 1185: # Evaluate the value 1186: # 1187: if ($value=~/\D/) { 1188: $Apache::functionplotresponse::fpr_xmin=$xmin; 1189: $Apache::functionplotresponse::fpr_xmax=$xmax; 1190: $value=&Apache::run::run($value,$safeeval); 1191: &addlog("Value evaluated to $value"); 1192: } 1193: 1194: # 1195: # Minimum and maximum lengths of the interval 1196: # 1197: if ((defined($minimumlength)) || (defined($maximumlength))) { 1198: &addlog("Minimumlength $minimumlength Maximumlength $maximumlength"); 1199: } 1200: my $li=0; 1201: my $lh=400; 1202: 1203: # Special case: the upper boundary was not defined 1204: # and needs to be set to the value where 1205: # the condition is not true anymore => set flag 1206: 1207: my $findupper=0; 1208: if (($xfinal eq '') 1209: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) 1210: && ($xfinallabel)) { 1211: $findupper=1; 1212: } 1213: 1214: # if a hard value is set for the boundaries, it overrides the label 1215: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) { 1216: $li=&array_index($xmin,$xmax,$xinitial); 1217: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li; 1218: } 1219: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) { 1220: $lh=&array_index($xmin,$xmax,$xfinal); 1221: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh; 1222: } 1223: # if the label is defined, use it 1224: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) { 1225: &addlog("Using lower label $xinitiallabel"); 1226: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}; 1227: } else { 1228: $li=&array_index($xmin,$xmax,$xinitial); 1229: } 1230: unless ($findupper) { 1231: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) { 1232: &addlog("Using upper label $xfinallabel"); 1233: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1; 1234: } else { 1235: $lh=&array_index($xmin,$xmax,$xfinal); 1236: } 1237: } 1238: # Basic sanity checks 1239: if ($li<0) { $li=0; } 1240: if ($lh>400) { $lh=400; } 1241: if (($li>$lh) || (!defined($lh))) { 1242: $lh=$li; 1243: } 1244: 1245: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=". 1246: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))"); 1247: if ($findupper) { 1248: &addlog("Looking for label $xfinallabel"); 1249: } 1250: my $tol=$percent*($ymax-$ymin)/100; 1251: if ($xmax>$xmin) { 1252: if ($derivative==2) { 1253: $tol=4.*$tol/($xmax-$xmin); 1254: } elsif ($derivative==1) { 1255: $tol=2.*$tol/($xmax-$xmin); 1256: } elsif ($derivative==-1) { 1257: $tol=$tol*($xmax-$xmin)/2.; 1258: } 1259: } 1260: my $integral=0; 1261: my $binwidth=($xmax-$xmin)/400.; 1262: if (($derivative<0) && (!$findupper)) { 1263: # definite integral, calculate over whole length 1264: &addlog("Calculating definite integral"); 1265: for (my $i=$li; $i<=$lh; $i++) { 1266: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1267: } 1268: unless (&compare_rel($relationship,$value,$integral,$tol)) { 1269: &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol"); 1270: &addlog("Rule $label failed."); 1271: my $hintlabel=$label; 1272: $hintlabel=~s/^R//; 1273: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1274: &addlog("Set hint condition $hintlabel"); 1275: return 0; 1276: } 1277: } else { 1278: for (my $i=$li; $i<=$lh; $i++) { 1279: my $val; 1280: if ($derivative==2) { 1281: $val=$Apache::functionplotresponse::d2funcdx2[$i]; 1282: } elsif ($derivative==1) { 1283: $val=$Apache::functionplotresponse::dfuncdx[$i]; 1284: } elsif ($derivative==-1) { 1285: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1286: $val=$integral; 1287: } else { 1288: $val=$Apache::functionplotresponse::func[$i]; 1289: } 1290: unless (&compare_rel($relationship,$value,$val,$tol)) { 1291: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); 1292: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); 1293: if (($findupper) && ($i>$li)) { 1294: # Check lengths 1295: unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1296: # Successfully found a new label, set it 1297: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; 1298: &addlog("Rule $label passed, setting label $xfinallabel"); 1299: return 1; 1300: } else { 1301: &addlog("Rule $label failed."); 1302: &setfailed($label); 1303: return 0; 1304: } 1305: } 1306: } 1307: } 1308: # Corner case where this makes sense: using start or stop as defined labels 1309: unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1310: &addlog("Rule $label passed."); 1311: return 1; 1312: } 1313: 1314: # 1315: # check for minimum and maximum lengths 1316: # 1317: 1318: sub checklength { 1319: my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_; 1320: unless (($minimumlength) || ($maximumlength)) { return 1; } 1321: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); 1322: if ($minimumlength) { 1323: if ($length<$minimumlength) { 1324: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); 1325: &setfailed($label); 1326: return 0; 1327: } 1328: } 1329: if ($maximumlength) { 1330: if ($length>$maximumlength) { 1331: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); 1332: &setfailed($label); 1333: return 0; 1334: } 1335: } 1336: return 1; 1337: } 1338: 1339: sub setfailed { 1340: my ($label)=@_; 1341: my $hintlabel=$label; 1342: $hintlabel=~s/^R//; 1343: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1344: &addlog("Set hint condition $hintlabel"); 1345: } 1346: 1347: sub start_functionplotruleset { 1348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1349: if ($target eq 'edit') { 1350: return &Apache::edit::start_table($token). 1351: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>' 1352: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1353: .&Apache::edit::deletelist($target,$token).'   '. 1354: &Apache::edit::insertlist($target,$token).'   ' 1355: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules') 1356: .'</span></td>' 1357: ."<td> " 1358: .&Apache::edit::end_row() 1359: .&Apache::edit::start_spanning_row() 1360: ."\n"; 1361: } 1362: } 1363: 1364: sub end_functionplotruleset { 1365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1366: my $id=$Apache::inputtags::response[-1]; 1367: my $partid=$Apache::inputtags::part; 1368: my $internalid = $partid.'_'.$id; 1369: 1370: if ($target eq 'edit' ) { 1371: return &Apache::edit::end_table(); 1372: } elsif ($target eq 'grade' 1373: && &Apache::response::submitted() 1374: && $Apache::lonhomework::type ne 'exam') { 1375: # 1376: # Actually grade 1377: # 1378: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1379: 1380: my $ad=''; 1381: undef %Apache::functionplotresponse::functionplotrulelabels; 1382: $Apache::functionplotresponse::ruleslog=''; 1383: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; 1384: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; 1385: if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') { 1386: $ad='NOT_FUNCTION'; 1387: } else { 1388: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". 1389: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")"); 1390: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ". 1391: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")"); 1392: 1393: # We have a function that we can actually grade, go through the spline rules. 1394: foreach my $rule (@Apache::functionplotresponse::functionplotrules) { 1395: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { 1396: $ad='INCORRECT'; 1397: last; 1398: } 1399: } 1400: # If it's not wrong, it's correct 1401: unless ($ad) { $ad='EXACT_ANS' }; 1402: } 1403: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules)); 1404: &addlog("Assigned award detail: $ad"); 1405: # Store for later to be assigned at end_functionplotresponse 1406: $Apache::functionplotresponse::awarddetail=$ad; 1407: } 1408: } 1409: 1410: 1411: sub end_functionplotresponse { 1412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1413: &Apache::response::end_response; 1414: 1415: my $result; 1416: my $id=$Apache::inputtags::response[-1]; 1417: my $partid=$Apache::inputtags::part; 1418: my $internalid = $partid.'_'.$id; 1419: 1420: if ($target eq 'edit') { $result=&Apache::edit::end_table(); } 1421: if ($target eq 'grade' 1422: && &Apache::response::submitted() 1423: && $Apache::lonhomework::type eq 'exam') { 1424: 1425: &Apache::response::scored_response($partid,$id); 1426: 1427: } elsif ($target eq 'grade' 1428: && &Apache::response::submitted() 1429: && $Apache::lonhomework::type ne 'exam') { 1430: my ($response,%coords)=&get_answer_from_form_fields($internalid); 1431: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 1432: my %previous=&Apache::response::check_for_previous($response,$partid,$id); 1433: # 1434: # Assign grade 1435: # 1436: my $ad=$Apache::functionplotresponse::awarddetail; 1437: # 1438: # Store grading info 1439: # 1440: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad; 1441: &Apache::response::handle_previous(\%previous,$ad); 1442: } elsif ($target eq 'web') { 1443: undef @Apache::functionplotresponse::failedrules; 1444: } 1445: return $result; 1446: } 1447: 1448: sub end_functionplotelements { 1449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1450: my $result=''; 1451: my $id=$Apache::inputtags::response[-1]; 1452: my $partid=$Apache::inputtags::part; 1453: my $internalid = $partid.'_'.$id; 1454: if ($target eq 'edit' ) { 1455: $result=&Apache::edit::end_table(); 1456: } elsif ($target eq 'web') { 1457: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1458: 1459: # Are we in show answer mode? 1460: my $showanswer=&Apache::response::show_answer(); 1461: if ($showanswer) { 1462: # Render answerdisplay 1463: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2); 1464: if ($answerdisplay=~/\S/s) { 1465: foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) { 1466: my @components=split(/\s*\:\s*/,$plot); 1467: if ($#components<3) { 1468: # Just a simple plot 1469: my ($func,$xl,$xh)=@components; 1470: if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } 1471: if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } 1472: $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); 1473: } else { 1474: # This is a spline 1475: $result.=&answer_spline_script($internalid,@components); 1476: } 1477: } 1478: } 1479: } 1480: my $fixed=0; 1481: if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; } 1482: # Now is the time to render all of the stored splines 1483: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1484: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed); 1485: } 1486: # close the init script 1487: $result.=&end_init_script(); 1488: # register all splines in this response 1489: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'. 1490: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n"; 1491: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1492: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'. 1493: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n"; 1494: } 1495: # generate the input fields 1496: $result.=$Apache::functionplotresponse::inputfields; 1497: # actually start the <applet>-tag 1498: $result.=&geogebra_startcode($internalid); 1499: # load the spline bytecode 1500: $result.=&geogebra_spline_program(); 1501: # set default parameters 1502: $result.=&geogebra_default_parameters($internalid); 1503: # close the <applet>-tag 1504: $result.=&geogebra_endcode(); 1505: } 1506: return $result; 1507: } 1508: 1509: sub boundaries { 1510: my ($parstack,$safeeval,$level)=@_; 1511: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level); 1512: $xmin=(defined($xmin)?$xmin:-10); 1513: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level); 1514: $xmax=(defined($xmax)?$xmax:10); 1515: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level); 1516: $ymin=(defined($ymin)?$ymin:-10); 1517: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level); 1518: $ymax=(defined($ymax)?$ymax:10); 1519: if ($xmax<=$xmin) { 1520: $xmax=$xmin+20; 1521: } 1522: if ($ymax<=$ymin) { 1523: $ymax=$ymin+20; 1524: } 1525: return ($xmin,$xmax,$ymin,$ymax); 1526: } 1527: 1528: sub start_functionplotelements { 1529: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1530: my $result=''; 1531: my $id=$Apache::inputtags::response[-1]; 1532: my $partid=$Apache::inputtags::part; 1533: my $internalid = $partid.'_'.$id; 1534: 1535: if ($target eq 'edit') { 1536: return &Apache::edit::start_table($token). 1537: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>' 1538: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1539: .&Apache::edit::deletelist($target,$token).'   '. 1540: &Apache::edit::insertlist($target,$token).'   ' 1541: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements') 1542: .'</span></td>' 1543: ."<td> " 1544: .&Apache::edit::end_row() 1545: .&Apache::edit::start_spanning_row() 1546: ."\n"; 1547: } elsif ($target eq 'web') { 1548: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1549: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1550: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1551: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1552: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2); 1553: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2); 1554: 1555: 1556: # paste in the update routine to receive stuff back from the applet 1557: $result.=&update_script($internalid); 1558: # start the initscript for this applet 1559: $result.=&start_init_script($internalid); 1560: # put the axis commands inside 1561: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); 1562: $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel); 1563: # init script is left open 1564: } 1565: return $result; 1566: } 1567: 1568: 1; 1569: 1570: __END__ 1571: 1572: =head1 NAME 1573: 1574: Apache::functionplotresponse.pm; 1575: 1576: =head1 SYNOPSIS 1577: 1578: Handles tags associated with accepting function plots. 1579: 1580: This is part of the LearningOnline Network with CAPA project 1581: described at http://www.lon-capa.org. 1582: 1583: =head1 HANDLER SUBROUTINE 1584: 1585: start_functionplotresponse() 1586: 1587: =head1 OTHER SUBROUTINES 1588: 1589: =over 1590: 1591: =item end_functionplotresponse() 1592: 1593: =back 1594: 1595: =cut