loncom/homework/functionplotresponse.pm - view

File: [LON-CAPA] / loncom / homework / functionplotresponse.pm
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Fri Nov 18 19:32:48 2011 UTC (12 years, 6 months ago) by www
Branches: MAIN
CVS tags: HEAD

More elegant way of doing the point coordinates and their updates

1: # LearningOnline Network with CAPA 2: # Functionplot responses 3: # 4: # $Id: functionplotresponse.pm,v 1.74 2011/11/18 19:32:48 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 416: &new_point_coordinate($id,$startlabel,$xs,$ys,0). 417: &new_point_coordinate($id,$endlabel,$xe,$ye,0). 418: (<<ENDVECTOR); 419: document.ggbApplet_$id.evalCommand("$label=Vector[$startlabel,$endlabel]"); 420: document.ggbApplet_$id.setLabelVisible("$label",true); 421: document.ggbApplet_$id.setLineThickness("$label",8); 422: document.ggbApplet_$id.evalCommand("$pointlabel=($pointx,y($startlabel))"); 423: document.ggbApplet_$id.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]"); 424: document.ggbApplet_$id.setLabelVisible("$anglelabel",true); 425: document.ggbApplet_$id.setLabelStyle("$anglelabel",VALUE=2); 426: ENDVECTOR 427: } 428: 429: # 430: # Answer spline display 431: # 432: # points: x,y,slope_x,slope_y 433: 434: sub answer_spline_script { 435: my ($id,@points)=@_; 436: my $order=int(($#points+1)/4); 437: if ($order<2) { $order=2; } 438: if ($order>8) { $order=8; } 439: $Apache::functionplotresponse::counter++; 440: my $label='CSpline'.$Apache::functionplotresponse::counter; 441: my $output='document.ggbApplet_'.$id.'.evalCommand("'.$label.'=Spline'.$order.'['; 442: for (my $i=0;$i<=$#points;$i+=4) { 443: $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),"; 444: } 445: $output=~s/\,$//; 446: $output.=']");'."\n"; 447: for (my $i=2; $i<2*$order; $i+=2) { 448: $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n"; 449: } 450: for (my $i=1; $i<2*$order; $i+=2) { 451: $output.='document.ggbApplet_'.$id.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n"; 452: } 453: 454: return $output; 455: } 456: 457: # 458: # Subroutine that generates code for spline $label based on stored information 459: # 460: 461: sub generate_spline { 462: my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 463: my $result=''; 464: my $order=$Apache::functionplotresponse::splineorder{$label}; 465: my $x=$Apache::functionplotresponse::splineinitx{$label}; 466: my $y=$Apache::functionplotresponse::splineinity{$label}; 467: my $sx=$Apache::functionplotresponse::splinescalex{$label}; 468: my $sy=$Apache::functionplotresponse::splinescaley{$label}; 469: my @coords=(); 470: foreach my $i (1..$order) { 471: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed); 472: my $xp=$x; 473: $x+=$sx/(2.*($order-1)); 474: push(@coords,$label.'P'.$i); 475: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed); 476: $x+=$sx/(2.*($order-1)); 477: push(@coords,$label.'S'.$i); 478: } 479: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 480: return $result; 481: } 482: 483: # 484: # Object 485: # 486: 487: sub start_plotobject { 488: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 489: my $result=''; 490: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 491: my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval); 492: my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval); 493: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 494: $label=~s/\W//gs; 495: $label=ucfirst($label); 496: unless ($label) { $label="NewObject"; } 497: if ($target eq 'web') { 498: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 499: unless (defined($x)) { $x=$xmin; } 500: unless (defined($y)) { $y=$ymin; } 501: $result.=&plotobject_script($internalid,$label,$x,$y); 502: } elsif ($target eq 'edit') { 503: $result=&Apache::edit::tag_start($target,$token,'Plot Object'). 504: &Apache::edit::text_arg('Label on Plot:','label', 505: $token,'16'). 506: &Apache::edit::text_arg('x:','x', 507: $token,'8'). 508: &Apache::edit::text_arg('y:','y', 509: $token,'8'). 510: &Apache::edit::end_row(); 511: } elsif ($target eq 'modified') { 512: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y'); 513: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 514: } 515: return $result; 516: } 517: 518: sub end_plotobject { 519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 520: my $result=''; 521: if ($target eq 'edit') { 522: $result=&Apache::edit::end_table(); 523: } 524: return $result; 525: } 526: 527: # 528: # Vector 529: # 530: 531: sub start_plotvector { 532: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 533: my $result=''; 534: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 535: my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval); 536: my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval); 537: my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval); 538: my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval); 539: 540: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 541: $label=~s/\W//gs; 542: $label=ucfirst($label); 543: unless ($label) { $label="NewVector"; } 544: if ($target eq 'web') { 545: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 546: unless (defined($tailx)) { $tailx=$xmin; } 547: unless (defined($taily)) { $taily=$ymin; } 548: unless (defined($tipx)) { $tipx=$xmin; } 549: unless (defined($tipy)) { $tipy=$ymin; } 550: $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax); 551: } elsif ($target eq 'edit') { 552: $result=&Apache::edit::tag_start($target,$token,'Plot Vector'). 553: &Apache::edit::text_arg('Label on Plot:','label', 554: $token,'16'). 555: &Apache::edit::text_arg('Tail x:','tailx', 556: $token,'8'). 557: &Apache::edit::text_arg('Tail y:','taily', 558: $token,'8'). 559: &Apache::edit::text_arg('Tip x:','tipx', 560: $token,'8'). 561: &Apache::edit::text_arg('Tip y:','tipy', 562: $token,'8'). 563: 564: &Apache::edit::end_row(); 565: } elsif ($target eq 'modified') { 566: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy'); 567: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 568: } 569: return $result; 570: } 571: 572: sub end_plotvector { 573: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 574: my $result=''; 575: if ($target eq 'edit') { 576: $result=&Apache::edit::end_table(); 577: } 578: return $result; 579: } 580: 581: 582: 583: # 584: # <backgroundplot function="..." fixed="yes/no" /> 585: # 586: sub start_backgroundplot { 587: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 588: my $result=''; 589: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 590: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); 591: my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval); 592: my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval); 593: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 594: my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval); 595: $color=~s/[^a-fA-F0-9]//gs; 596: unless (length($color)==6) { $color=''; } 597: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); 598: 599: unless ($function) { $function="0"; } 600: if ($target eq 'web') { 601: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 602: unless (defined($xinitial)) { $xinitial=$xmin; } 603: unless (defined($xfinal)) { $xfinal=$xmax; } 604: $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal); 605: } elsif ($target eq 'edit') { 606: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot'). 607: &Apache::edit::text_arg('Function:','function', 608: $token,'16'). 609: &Apache::edit::text_arg('Initial x-value (optional):','xinitial', 610: $token,'8'). 611: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 612: $token,'8'). 613: &Apache::edit::text_arg('Label on Plot:','label', 614: $token,'8'). 615: &Apache::edit::text_arg('Color (hex code):','color', 616: $token,'8'). 617: &Apache::edit::select_arg('Fixed location:','fixed', 618: ['yes','no'],$token). 619: &Apache::edit::end_row(); 620: } elsif ($target eq 'modified') { 621: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 622: $safeeval,'function','label','xinitial','xfinal','color','fixed'); 623: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 624: } 625: return $result; 626: } 627: 628: sub end_backgroundplot { 629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 630: my $result=''; 631: if ($target eq 'edit') { 632: $result=&Apache::edit::end_table(); 633: } 634: return $result; 635: } 636: 637: # 638: # <functionplotrule ... /> 639: # 640: sub start_functionplotrule { 641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 642: my $result=''; 643: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 644: $Apache::functionplotresponse::counter++; 645: if ($label=~/\W/) { 646: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 647: } 648: $label=~s/\W//gs; 649: unless ($label) { 650: $label='R'.$Apache::functionplotresponse::counter; 651: } else { 652: $label='R'.$label; 653: } 654: if ($Apache::functionplotresponse::splineorder{$label}) { 655: &Apache::lonxml::error(&mt('Rule indices must be unique.')); 656: } 657: 658: 659: if ($target eq 'grade') { 660: # Simply remember - in order - for later 661: my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval); 662: my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval); 663: if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) { 664: &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.')); 665: } 666: $beginninglabel=~s/\W//gs; 667: $endinglabel=~s/\W//gs; 668: my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval); 669: $relationship=~s/\W//gs; 670: $relationship=lc($relationship); 671: unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) { 672: &Apache::lonxml::warning(&mt('Rule relationship not defined.')); 673: $relationship='eq'; 674: } 675: my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval); 676: unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) { 677: &Apache::lonxml::warning(&mt('Rule derivative not defined.')); 678: $derivative=0; 679: } 680: push(@Apache::functionplotresponse::functionplotrules,join(':',( 681: $label, 682: $derivative, 683: &Apache::lonxml::get_param('xinitial',$parstack,$safeeval), 684: $beginninglabel, 685: &Apache::lonxml::get_param('xfinal',$parstack,$safeeval), 686: $endinglabel, 687: &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval), 688: &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval), 689: $relationship, 690: &Apache::lonxml::get_param('value',$parstack,$safeeval), 691: &Apache::lonxml::get_param('percenterror',$parstack,$safeeval) 692: ))); 693: } elsif ($target eq 'edit') { 694: $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule'). 695: &Apache::edit::text_arg('Index/Name:','index', 696: $token,'10').' '. 697: &Apache::edit::select_arg(&mt('Function:'),'derivativeorder', 698: [['0','Function itself'], 699: ['1','First derivative'], 700: ['2','Second derivative'], 701: ['-1','Integral']],$token).'<br />'. 702: &Apache::edit::text_arg('Initial x-value:','xinitial', 703: $token,'8'). 704: &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel', 705: [['start','Start of Plot'], 706: ['end','End of Plot']],$token,'8').'<br />'. 707: 708: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 709: $token,'8'). 710: &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel', 711: [['end','End of Plot']],$token,'8').'<br />'. 712: &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength', 713: $token,'8'). 714: &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength', 715: $token,'8').'<br />'. 716: &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship', 717: [['eq','equal'], 718: ['ne','not equal'], 719: ['ge','greater than or equal'], 720: ['gt','greater than'], 721: ['lt','less than'], 722: ['le','less than or equal']],$token). 723: $result.= &Apache::edit::select_or_text_arg('Value:','value', 724: [['undef','not defined']],$token,'30'). 725: &Apache::edit::text_arg('Percent error:','percenterror', 726: $token,'8'). 727: &Apache::edit::end_row(); 728: } elsif ($target eq 'modified') { 729: if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) { 730: $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}=''; 731: } 732: if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) { 733: $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}=''; 734: } 735: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 736: $safeeval,'index','derivativeorder', 737: 'xinitial','xinitiallabel','xfinal','xfinallabel', 738: 'minimumlength','maximumlength', 739: 'relationship','value','percenterror'); 740: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 741: } 742: return $result; 743: } 744: 745: sub end_functionplotrule { 746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 747: my $result=''; 748: if ($target eq 'edit') { 749: $result=&Apache::edit::end_table(); 750: } 751: return $result; 752: } 753: 754: 755: # 756: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> 757: # 758: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them 759: # 760: sub start_spline { 761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 762: my $result=''; 763: if ($target eq 'web') { 764: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 765: $Apache::functionplotresponse::counter++; 766: if ($label=~/\W/) { 767: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.')); 768: } 769: $label=~s/\W//gs; 770: unless ($label) { 771: $label='S'.$Apache::functionplotresponse::counter; 772: } else { 773: $label='S'.$label; 774: } 775: if ($Apache::functionplotresponse::splineorder{$label}) { 776: &Apache::lonxml::error(&mt('Spline indices must be unique.')); 777: } 778: 779: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); 780: if ($order<2) { $order=2; } 781: if ($order>8) { $order=8; } 782: $Apache::functionplotresponse::splineorder{$label}=$order; 783: 784: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); 785: unless ($x) { $x=0; } 786: $Apache::functionplotresponse::splineinitx{$label}=$x; 787: 788: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); 789: unless ($y) { $y=0; } 790: $Apache::functionplotresponse::splineinity{$label}=$y; 791: 792: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); 793: unless ($sx) { $sx=$order; } 794: $Apache::functionplotresponse::splinescalex{$label}=$sx; 795: 796: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); 797: unless ($sy) { $sy=2; } 798: $Apache::functionplotresponse::splinescaley{$label}=$sy; 799: } elsif ($target eq 'edit') { 800: $result=&Apache::edit::tag_start($target,$token,'Spline'). 801: &Apache::edit::text_arg('Index:','index', 802: $token,'4').' '. 803: &Apache::edit::select_arg('Order:','order', 804: ['2','3','4','5','6','7','8'],$token).' '. 805: &Apache::edit::text_arg('Initial x-value:','initx', 806: $token,'4').' '. 807: &Apache::edit::text_arg('Initial y-value:','inity', 808: $token,'4').' '. 809: &Apache::edit::text_arg('Scale x:','scalex', 810: $token,'4').' '. 811: &Apache::edit::text_arg('Scale y:','scaley', 812: $token,'4'). 813: &Apache::edit::end_row(); 814: } elsif ($target eq 'modified') { 815: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 816: $safeeval,'index','order','initx','inity', 817: 'scalex','scaley'); 818: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 819: } 820: return $result; 821: } 822: 823: sub end_spline { 824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 825: my $result=''; 826: if ($target eq 'edit') { 827: $result=&Apache::edit::end_table(); 828: } 829: return $result; 830: } 831: 832: sub end_init_script { 833: return (<<ENDENDINIT); 834: } 835: // ]]> 836: </script> 837: ENDENDINIT 838: } 839: 840: # 841: # Storing and restoring spline coordinates from part answers 842: # 843: sub decode_previous_answer { 844: my ($answer)=@_; 845: foreach my $coordinate (split(/\,/,$answer)) { 846: my ($key,$value)=split(/\=/,$coordinate); 847: $Apache::functionplotresponse::previous{$key}=$value; 848: } 849: } 850: 851: sub get_answer_from_form_fields { 852: my ($id)=@_; 853: my $answer=''; 854: my %coords=(); 855: foreach my $field (keys(%env)) { 856: if ($field=~/^form\.HWVAL\_$id/) { 857: $field=~/^form\.(.*)$/; 858: $coords{$1}=$env{$field}; 859: } 860: } 861: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); 862: return ($answer,%coords); 863: } 864: 865: # 866: # The following functions calculate the cubic-hermite splines server-side 867: # 868: 869: sub cubic_hermite { 870: my ($t,$p1,$s1,$p2,$s2)=@_; 871: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+ 872: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2); 873: } 874: 875: # 876: # d/dt(...) 877: # 878: 879: sub ddt_cubic_hermite { 880: my ($t,$p1,$s1,$p2,$s2)=@_; 881: return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+ 882: (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2); 883: } 884: 885: # 886: # d^2/dt^2(...) 887: # 888: 889: sub d2dt2_cubic_hermite { 890: my ($t,$p1,$s1,$p2,$s2)=@_; 891: return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+ 892: (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2); 893: } 894: 895: # 896: # Array index calculation 897: # 898: sub array_index { 899: my ($xmin,$xmax,$x)=@_; 900: if ($x ne '') { 901: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5); 902: } else { 903: return undef; 904: } 905: } 906: 907: # 908: # Populate the arrays 909: # 910: 911: sub populate_arrays { 912: my ($id,$xmin,$xmax,$ymin,$ymax)=@_; 913: for (my $i=0; $i<=400; $i++) { 914: $Apache::functionplotresponse::actualxval[$i]=undef; 915: $Apache::functionplotresponse::func[$i]=undef; 916: $Apache::functionplotresponse::dfuncdx[$i]=undef; 917: $Apache::functionplotresponse::d2funcd2x[$i]=undef; 918: } 919: unless ($xmax>$xmin) { return 'no_func'; } 920: # Run over all splines in response 921: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) { 922: my $xiold=-1; 923: # Run over all points in spline 924: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) { 925: my $ni=$i+1; 926: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'}, 927: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'}, 928: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'}, 929: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'}); 930: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'}, 931: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'}, 932: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'}, 933: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'}); 934: # Run in small steps over spline parameter 935: for (my $t=0; $t<=1; $t+=0.0001) { 936: my $xreal=&cubic_hermite($t,@xparms); 937: my $xi=&array_index($xmin,$xmax,$xreal); 938: if ($xi<$xiold) { return 'no_func'; } 939: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { 940: $xiold=$xi; 941: $Apache::functionplotresponse::actualxval[$xi]=$xreal; 942: # Function value 943: my $funcval=&cubic_hermite($t,@yparms); 944: 945: # Do we already have a value for this point, and is it different from the new one? 946: if ((defined($Apache::functionplotresponse::func[$xi])) && 947: (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) { 948: return 'no_func'; 949: } 950: # Okay, remember the new point 951: $Apache::functionplotresponse::func[$xi]=$funcval; 952: 953: if (defined($funcval)) { 954: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { 955: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; 956: } 957: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) { 958: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi; 959: } 960: } 961: # Chain rule 962: # dy/dx=dy/dt/(dx/dt) 963: my $dxdt=&ddt_cubic_hermite($t,@xparms); 964: if ($dxdt) { 965: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt; 966: # Second derivative 967: $Apache::functionplotresponse::d2funcdx2[$xi]= 968: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/ 969: ($dxdt*$dxdt*$dxdt); 970: } 971: } 972: } 973: } 974: } 975: } 976: 977: # 978: # Implementation of <functionplotresponse> 979: # 980: 981: sub start_functionplotresponse { 982: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 983: my $result=''; 984: # To remember the splines - somehow, they need to come last 985: undef %Apache::functionplotresponse::splineorder; 986: undef %Apache::functionplotresponse::splineinitx; 987: undef %Apache::functionplotresponse::splineinity; 988: undef %Apache::functionplotresponse::splinescalex; 989: undef %Apache::functionplotresponse::splinescaley; 990: # Remember input fields, etc 991: undef %Apache::functionplotresponse::previous; 992: $Apache::functionplotresponse::inputfields=''; 993: $Apache::functionplotresponse::counter=0; 994: # Remember rules 995: undef @Apache::functionplotresponse::functionplotrules; 996: # Remember failed rules 997: if ($target eq 'grade') { 998: undef @Apache::functionplotresponse::failedrules; 999: } 1000: # Delete previous awards 1001: undef $Apache::functionplotresponse::awarddetail; 1002: # Part and ID 1003: my $partid=$Apache::inputtags::part; 1004: my $id=&Apache::response::start_response($parstack,$safeeval); 1005: # Internal ID to mark the applet and its coordinates 1006: my $internalid = $partid.'_'.$id; 1007: # Previous answer 1008: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); 1009: 1010: # Parameters of <functionplotresponse> 1011: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval); 1012: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1013: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1014: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1015: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval); 1016: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval); 1017: if ($target eq 'edit') { 1018: $result.=&Apache::edit::start_table($token) 1019: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>' 1020: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1021: .&Apache::edit::deletelist($target,$token).'   ' 1022: .&Apache::edit::insertlist($target,$token).'   ' 1023: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses') 1024: .'</span></td>' 1025: ."<td> " 1026: .&Apache::edit::end_row() 1027: .&Apache::edit::start_spanning_row() 1028: ."\n"; 1029: $result.=&Apache::edit::text_arg('Label x-axis:','xlabel', 1030: $token,'6').' '. 1031: &Apache::edit::text_arg('Minimum x-value:','xmin', 1032: $token,'4').' '. 1033: &Apache::edit::text_arg('Maximum x-value:','xmax', 1034: $token,'4').' '. 1035: &Apache::edit::select_arg('x-axis visible:','xaxisvisible', 1036: ['yes','no'],$token).'<br />'. 1037: &Apache::edit::text_arg('Label y-axis:','ylabel', 1038: $token,'6').' '. 1039: &Apache::edit::text_arg('Minimum y-value:','ymin', 1040: $token,'4').' '. 1041: &Apache::edit::text_arg('Maximum y-value:','ymax', 1042: $token,'4').' '. 1043: &Apache::edit::select_arg('y-axis visible:','yaxisvisible', 1044: ['yes','no'],$token).'<br />'. 1045: &Apache::edit::select_arg('Grid visible:','gridvisible', 1046: ['yes','no'],$token).'<br />'. 1047: &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):', 1048: 'answerdisplay',$token,'50'). 1049: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 1050: } elsif ($target eq 'modified') { 1051: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 1052: $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', 1053: 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay'); 1054: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 1055: 1056: } elsif ($target eq 'meta') { 1057: $result=&Apache::response::meta_package_write('functionplotresponse'); 1058: } elsif (($target eq 'answer') && 1059: ($env{'form.answer_output_mode'} ne 'tex') && 1060: ($Apache::lonhomework::viewgrades == 'F')) { 1061: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); 1062: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); 1063: my $start_page = &Apache::loncommon::start_page('Rules Log', undef, 1064: {'only_body' => 1, 1065: 'bgcolor' => '#FFFFFF', 1066: 'js_ready' => 1,}); 1067: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); 1068: $uname =~s/\W//g; 1069: $udom =~s/\W//g; 1070: my $function_name = 1071: join('_','LONCAPA_scriptvars',$uname,$udom, 1072: $env{'form.counter'},$Apache::lonxml::curdepth); 1073: my $rules_var ="<script type=\"text/javascript\"> 1074: // <![CDATA[ 1075: function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". 1076: $Apache::functionplotresponse::ruleslog. 1077: "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} 1078: // ]]> 1079: </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; 1080: &Apache::lonxml::add_script_result($rules_var); 1081: } 1082: 1083: return $result; 1084: } 1085: 1086: sub compare_rel { 1087: my ($relationship,$value,$realval,$tol)=@_; 1088: # is the real value undefined? 1089: unless (defined($realval)) { 1090: # the real value is not defined 1091: if ($relationship eq 'eq') { 1092: if ($value eq 'undef') { 1093: return 1; 1094: } else { 1095: return 0; 1096: } 1097: } elsif ($relationship eq 'ne') { 1098: if ($value eq 'undef') { 1099: return 0; 1100: } else { 1101: return 1; 1102: } 1103: } else { 1104: return 0; 1105: } 1106: } 1107: 1108: # is the expected value undefined? 1109: if ($value eq 'undef') { 1110: # but by now we know that the real value is defined 1111: return 0; 1112: } 1113: 1114: # both are defined. 1115: if ($relationship eq 'gt') { 1116: return ($realval>$value); 1117: } elsif ($relationship eq 'ge') { 1118: return ($realval>$value-$tol); 1119: } elsif ($relationship eq 'lt') { 1120: return ($realval<$value); 1121: } elsif ($relationship eq 'le') { 1122: return ($realval<$value+$tol); 1123: } elsif ($relationship eq 'ne') { 1124: return (abs($value-$realval)>$tol); 1125: } else { 1126: return (abs($value-$realval)<$tol); 1127: } 1128: return 0; 1129: } 1130: 1131: sub addlog { 1132: my ($text)=@_; 1133: $text=~s/\'/\\\'/g; 1134: $Apache::functionplotresponse::ruleslog.=$text.'<br />'; 1135: } 1136: 1137: sub actualval { 1138: my ($i,$xmin,$xmax)=@_; 1139: return $xmin+$i/400.*($xmax-$xmin); 1140: } 1141: 1142: sub fpr_val { 1143: my ($arg)=@_; 1144: return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg}, 1145: $Apache::functionplotresponse::fpr_xmin, 1146: $Apache::functionplotresponse::fpr_xmax); 1147: } 1148: 1149: sub fpr_f { 1150: my ($arg)=@_; 1151: return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin, 1152: $Apache::functionplotresponse::fpr_xmax, 1153: $arg)]; 1154: } 1155: 1156: sub fpr_dfdx { 1157: my ($arg)=@_; 1158: return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin, 1159: $Apache::functionplotresponse::fpr_xmax, 1160: $arg)]; 1161: } 1162: 1163: sub fpr_d2fdx2 { 1164: my ($arg)=@_; 1165: return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin, 1166: $Apache::functionplotresponse::fpr_xmax, 1167: $arg)]; 1168: } 1169: 1170: sub functionplotrulecheck { 1171: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1172: 1173: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) 1174: =split(/\:/,$rule); 1175: $percent=($percent>0?$percent:5); 1176: &addlog("================="); 1177: &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value"); 1178: # 1179: # Evaluate the value 1180: # 1181: if ($value=~/\D/) { 1182: $Apache::functionplotresponse::fpr_xmin=$xmin; 1183: $Apache::functionplotresponse::fpr_xmax=$xmax; 1184: $value=&Apache::run::run($value,$safeeval); 1185: &addlog("Value evaluated to $value"); 1186: } 1187: 1188: # 1189: # Minimum and maximum lengths of the interval 1190: # 1191: if ((defined($minimumlength)) || (defined($maximumlength))) { 1192: &addlog("Minimumlength $minimumlength Maximumlength $maximumlength"); 1193: } 1194: my $li=0; 1195: my $lh=400; 1196: 1197: # Special case: the upper boundary was not defined 1198: # and needs to be set to the value where 1199: # the condition is not true anymore => set flag 1200: 1201: my $findupper=0; 1202: if (($xfinal eq '') 1203: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) 1204: && ($xfinallabel)) { 1205: $findupper=1; 1206: } 1207: 1208: # if a hard value is set for the boundaries, it overrides the label 1209: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) { 1210: $li=&array_index($xmin,$xmax,$xinitial); 1211: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li; 1212: } 1213: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) { 1214: $lh=&array_index($xmin,$xmax,$xfinal); 1215: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh; 1216: } 1217: # if the label is defined, use it 1218: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) { 1219: &addlog("Using lower label $xinitiallabel"); 1220: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}; 1221: } else { 1222: $li=&array_index($xmin,$xmax,$xinitial); 1223: } 1224: unless ($findupper) { 1225: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) { 1226: &addlog("Using upper label $xfinallabel"); 1227: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1; 1228: } else { 1229: $lh=&array_index($xmin,$xmax,$xfinal); 1230: } 1231: } 1232: # Basic sanity checks 1233: if ($li<0) { $li=0; } 1234: if ($lh>400) { $lh=400; } 1235: if (($li>$lh) || (!defined($lh))) { 1236: $lh=$li; 1237: } 1238: 1239: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=". 1240: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))"); 1241: if ($findupper) { 1242: &addlog("Looking for label $xfinallabel"); 1243: } 1244: my $tol=$percent*($ymax-$ymin)/100; 1245: if ($xmax>$xmin) { 1246: if ($derivative==2) { 1247: $tol=4.*$tol/($xmax-$xmin); 1248: } elsif ($derivative==1) { 1249: $tol=2.*$tol/($xmax-$xmin); 1250: } elsif ($derivative==-1) { 1251: $tol=$tol*($xmax-$xmin)/2.; 1252: } 1253: } 1254: my $integral=0; 1255: my $binwidth=($xmax-$xmin)/400.; 1256: if (($derivative<0) && (!$findupper)) { 1257: # definite integral, calculate over whole length 1258: &addlog("Calculating definite integral"); 1259: for (my $i=$li; $i<=$lh; $i++) { 1260: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1261: } 1262: unless (&compare_rel($relationship,$value,$integral,$tol)) { 1263: &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol"); 1264: &addlog("Rule $label failed."); 1265: my $hintlabel=$label; 1266: $hintlabel=~s/^R//; 1267: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1268: &addlog("Set hint condition $hintlabel"); 1269: return 0; 1270: } 1271: } else { 1272: for (my $i=$li; $i<=$lh; $i++) { 1273: my $val; 1274: if ($derivative==2) { 1275: $val=$Apache::functionplotresponse::d2funcdx2[$i]; 1276: } elsif ($derivative==1) { 1277: $val=$Apache::functionplotresponse::dfuncdx[$i]; 1278: } elsif ($derivative==-1) { 1279: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1280: $val=$integral; 1281: } else { 1282: $val=$Apache::functionplotresponse::func[$i]; 1283: } 1284: unless (&compare_rel($relationship,$value,$val,$tol)) { 1285: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); 1286: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); 1287: if (($findupper) && ($i>$li)) { 1288: # Check lengths 1289: unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1290: # Successfully found a new label, set it 1291: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; 1292: &addlog("Rule $label passed, setting label $xfinallabel"); 1293: return 1; 1294: } else { 1295: &addlog("Rule $label failed."); 1296: &setfailed($label); 1297: return 0; 1298: } 1299: } 1300: } 1301: } 1302: # Corner case where this makes sense: using start or stop as defined labels 1303: unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1304: &addlog("Rule $label passed."); 1305: return 1; 1306: } 1307: 1308: # 1309: # check for minimum and maximum lengths 1310: # 1311: 1312: sub checklength { 1313: my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_; 1314: unless (($minimumlength) || ($maximumlength)) { return 1; } 1315: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); 1316: if ($minimumlength) { 1317: if ($length<$minimumlength) { 1318: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); 1319: &setfailed($label); 1320: return 0; 1321: } 1322: } 1323: if ($maximumlength) { 1324: if ($length>$maximumlength) { 1325: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); 1326: &setfailed($label); 1327: return 0; 1328: } 1329: } 1330: return 1; 1331: } 1332: 1333: sub setfailed { 1334: my ($label)=@_; 1335: my $hintlabel=$label; 1336: $hintlabel=~s/^R//; 1337: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1338: &addlog("Set hint condition $hintlabel"); 1339: } 1340: 1341: sub start_functionplotruleset { 1342: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1343: if ($target eq 'edit') { 1344: return &Apache::edit::start_table($token). 1345: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>' 1346: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1347: .&Apache::edit::deletelist($target,$token).'   '. 1348: &Apache::edit::insertlist($target,$token).'   ' 1349: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules') 1350: .'</span></td>' 1351: ."<td> " 1352: .&Apache::edit::end_row() 1353: .&Apache::edit::start_spanning_row() 1354: ."\n"; 1355: } 1356: } 1357: 1358: sub end_functionplotruleset { 1359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1360: my $id=$Apache::inputtags::response[-1]; 1361: my $partid=$Apache::inputtags::part; 1362: my $internalid = $partid.'_'.$id; 1363: 1364: if ($target eq 'edit' ) { 1365: return &Apache::edit::end_table(); 1366: } elsif ($target eq 'grade' 1367: && &Apache::response::submitted() 1368: && $Apache::lonhomework::type ne 'exam') { 1369: # 1370: # Actually grade 1371: # 1372: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1373: 1374: my $ad=''; 1375: undef %Apache::functionplotresponse::functionplotrulelabels; 1376: $Apache::functionplotresponse::ruleslog=''; 1377: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; 1378: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; 1379: if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') { 1380: $ad='NOT_FUNCTION'; 1381: } else { 1382: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". 1383: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")"); 1384: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ". 1385: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")"); 1386: 1387: # We have a function that we can actually grade, go through the spline rules. 1388: foreach my $rule (@Apache::functionplotresponse::functionplotrules) { 1389: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { 1390: $ad='INCORRECT'; 1391: last; 1392: } 1393: } 1394: # If it's not wrong, it's correct 1395: unless ($ad) { $ad='EXACT_ANS' }; 1396: } 1397: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules)); 1398: &addlog("Assigned award detail: $ad"); 1399: # Store for later to be assigned at end_functionplotresponse 1400: $Apache::functionplotresponse::awarddetail=$ad; 1401: } 1402: } 1403: 1404: 1405: sub end_functionplotresponse { 1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1407: &Apache::response::end_response; 1408: 1409: my $result; 1410: my $id=$Apache::inputtags::response[-1]; 1411: my $partid=$Apache::inputtags::part; 1412: my $internalid = $partid.'_'.$id; 1413: 1414: if ($target eq 'edit') { $result=&Apache::edit::end_table(); } 1415: if ($target eq 'grade' 1416: && &Apache::response::submitted() 1417: && $Apache::lonhomework::type eq 'exam') { 1418: 1419: &Apache::response::scored_response($partid,$id); 1420: 1421: } elsif ($target eq 'grade' 1422: && &Apache::response::submitted() 1423: && $Apache::lonhomework::type ne 'exam') { 1424: my ($response,%coords)=&get_answer_from_form_fields($internalid); 1425: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 1426: my %previous=&Apache::response::check_for_previous($response,$partid,$id); 1427: # 1428: # Assign grade 1429: # 1430: my $ad=$Apache::functionplotresponse::awarddetail; 1431: # 1432: # Store grading info 1433: # 1434: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad; 1435: &Apache::response::handle_previous(\%previous,$ad); 1436: } elsif ($target eq 'web') { 1437: undef @Apache::functionplotresponse::failedrules; 1438: } 1439: return $result; 1440: } 1441: 1442: sub end_functionplotelements { 1443: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1444: my $result=''; 1445: my $id=$Apache::inputtags::response[-1]; 1446: my $partid=$Apache::inputtags::part; 1447: my $internalid = $partid.'_'.$id; 1448: if ($target eq 'edit' ) { 1449: $result=&Apache::edit::end_table(); 1450: } elsif ($target eq 'web') { 1451: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1452: 1453: # Are we in show answer mode? 1454: my $showanswer=&Apache::response::show_answer(); 1455: if ($showanswer) { 1456: # Render answerdisplay 1457: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2); 1458: if ($answerdisplay=~/\S/s) { 1459: foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) { 1460: my @components=split(/\s*\:\s*/,$plot); 1461: if ($#components<3) { 1462: # Just a simple plot 1463: my ($func,$xl,$xh)=@components; 1464: if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } 1465: if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } 1466: $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); 1467: } else { 1468: # This is a spline 1469: $result.=&answer_spline_script($internalid,@components); 1470: } 1471: } 1472: } 1473: } 1474: my $fixed=0; 1475: if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; } 1476: # Now is the time to render all of the stored splines 1477: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1478: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed); 1479: } 1480: # close the init script 1481: $result.=&end_init_script(); 1482: # register all splines in this response 1483: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'. 1484: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n"; 1485: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1486: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'. 1487: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n"; 1488: } 1489: # generate the input fields 1490: $result.=$Apache::functionplotresponse::inputfields; 1491: # actually start the <applet>-tag 1492: $result.=&geogebra_startcode($internalid); 1493: # load the spline bytecode 1494: $result.=&geogebra_spline_program(); 1495: # set default parameters 1496: $result.=&geogebra_default_parameters($internalid); 1497: # close the <applet>-tag 1498: $result.=&geogebra_endcode(); 1499: } 1500: return $result; 1501: } 1502: 1503: sub boundaries { 1504: my ($parstack,$safeeval,$level)=@_; 1505: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level); 1506: $xmin=(defined($xmin)?$xmin:-10); 1507: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level); 1508: $xmax=(defined($xmax)?$xmax:10); 1509: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level); 1510: $ymin=(defined($ymin)?$ymin:-10); 1511: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level); 1512: $ymax=(defined($ymax)?$ymax:10); 1513: if ($xmax<=$xmin) { 1514: $xmax=$xmin+20; 1515: } 1516: if ($ymax<=$ymin) { 1517: $ymax=$ymin+20; 1518: } 1519: return ($xmin,$xmax,$ymin,$ymax); 1520: } 1521: 1522: sub start_functionplotelements { 1523: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1524: my $result=''; 1525: my $id=$Apache::inputtags::response[-1]; 1526: my $partid=$Apache::inputtags::part; 1527: my $internalid = $partid.'_'.$id; 1528: 1529: if ($target eq 'edit') { 1530: return &Apache::edit::start_table($token). 1531: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>' 1532: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1533: .&Apache::edit::deletelist($target,$token).'   '. 1534: &Apache::edit::insertlist($target,$token).'   ' 1535: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements') 1536: .'</span></td>' 1537: ."<td> " 1538: .&Apache::edit::end_row() 1539: .&Apache::edit::start_spanning_row() 1540: ."\n"; 1541: } elsif ($target eq 'web') { 1542: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1543: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1544: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1545: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1546: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2); 1547: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2); 1548: 1549: 1550: # paste in the update routine to receive stuff back from the applet 1551: $result.=&update_script($internalid); 1552: # start the initscript for this applet 1553: $result.=&start_init_script($internalid); 1554: # put the axis commands inside 1555: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); 1556: $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel); 1557: # init script is left open 1558: } 1559: return $result; 1560: } 1561: 1562: 1; 1563: 1564: __END__ 1565: 1566: =head1 NAME 1567: 1568: Apache::functionplotresponse.pm; 1569: 1570: =head1 SYNOPSIS 1571: 1572: Handles tags associated with accepting function plots. 1573: 1574: This is part of the LearningOnline Network with CAPA project 1575: described at http://www.lon-capa.org. 1576: 1577: =head1 HANDLER SUBROUTINE 1578: 1579: start_functionplotresponse() 1580: 1581: =head1 OTHER SUBROUTINES 1582: 1583: =over 1584: 1585: =item end_functionplotresponse() 1586: 1587: =back 1588: 1589: =cut