loncom/homework/functionplotresponse.pm - view

File: [LON-CAPA] / loncom / homework / functionplotresponse.pm
Revision 1.88: download - view: text, annotated - select for diffs
Sat Nov 26 01:35:26 2011 UTC (12 years, 5 months ago) by www
Branches: MAIN
CVS tags: language_hyphenation_merge, language_hyphenation, HEAD

Be able to adjust width and height, so you can use 1:1 aspect ratio

1: # LearningOnline Network with CAPA 2: # Functionplot responses 3: # 4: # $Id: functionplotresponse.pm,v 1.88 2011/11/26 01:35:26 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: use LONCAPA; 36: 37: BEGIN { 38: &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline', 39: 'plotobject','plotvector', 40: 'functionplotvectorrule','functionplotvectorsumrule', 41: 'functionplotcustomrule', 42: 'functionplotrule','functionplotruleset', 43: 'functionplotelements')); 44: } 45: 46: # 47: # There can be a number of applets on a page, each called ggbApplet_$id, 48: # where $id is the "_"-concatenated part and responseid 49: # 50: 51: sub geogebra_startcode { 52: my ($id,$width,$height)=@_; 53: $width=int(1.*$width); 54: $height=int(1.*$height); 55: unless ($width) { $width=700; } 56: unless ($height) { $height=400; } 57: return (<<ENDSTARTCODE); 58: <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar" 59: codebase="/adm/geogebra/" width="$width" height="$height" MAYSCRIPT> 60: <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/> 61: ENDSTARTCODE 62: } 63: 64: sub geogebra_endcode { 65: return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n"; 66: } 67: 68: # 69: # This is the internal GeoGebra bytecode which defines the spline functions 70: # 71: sub geogebra_spline_program { 72: return (<<ENDSPLINEPROGRAM); 73: <param name="ggbBase64" value="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74: ENDSPLINEPROGRAM 75: } 76: 77: # 78: # The standard set of parameters inside <applet> 79: # 80: sub geogebra_default_parameters { 81: my ($id)=@_; 82: return(<<ENDDEFAULTPARAMETERS); 83: <param name="image" value="/adm/lonIcons/lonanim.gif" /> 84: <param name="boxborder" value="false" /> 85: <param name="centerimage" value="true" /> 86: <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_algos.jar, geogebra_javascript.jar, geogebra_properties.jar, jlatexmath.jar, jlm_cyrillic.jar, jlm_greek.jar" /> 87: <param name="cache_version" value="4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0,4.0.1.0" /> 88: <param name="framePossible" value="false" /> 89: 90: <param name="showResetIcon" value="false" /> 91: <param name="showAnimationButton" value="false" /> 92: <param name="enableRightClick" value="false" /> 93: <param name="errorDialogsActive" value="true" /> 94: <param name="enableLabelDrags" value="false" /> 95: <param name="showMenuBar" value="false" /> 96: <param name="showToolBar" value="false" /> 97: <param name="showToolBarHelp" value="false" /> 98: <param name="showAlgebraInput" value="false" /> 99: <param name="enableShiftDragZoom" value="false" /> 100: <param name="allowRescaling" value="false" /> 101: <param name="enableLabelDrags" value="false" /> 102: <param name="ggbOnInitParam" value="applet_$id" /> 103: ENDDEFAULTPARAMETERS 104: } 105: 106: # 107: # This subroutine is called by LON-CAPA at </problem> 108: # Each applet on the page will call function ggbOnInit when it is done loading 109: # This function in turn will call the respective function registered by start_init_script 110: # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit 111: # 112: 113: sub init_script { 114: if ($#Apache::functionplotresponse::callscripts>=0) { 115: my $script=''; 116: foreach my $id (@Apache::functionplotresponse::callscripts) { 117: $script.="if (param=='applet_$id') { loaded_$id=true; }\n"; 118: } 119: $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)). 120: ") { setTimeout('ggbInitAll()',200) }"; 121: my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); 122: return (<<ENDGGBINIT); 123: <script type="text/javascript"> 124: // <![CDATA[ 125: // Function that each applet will call when loaded 126: // It will pass "its" parameter 127: // Set flags for when an applet is loaded, wait till all are loaded, and then some 128: function ggbOnInit(param) { 129: $script 130: } 131: function ggbInitAll() { 132: $calls 133: } 134: // ]]> 135: </script> 136: ENDGGBINIT 137: } 138: } 139: 140: # 141: # Each Geogebra applet is supposed to call this when parameters change 142: # Changes the hidden fields on the web page 143: # 144: sub update_script { 145: my ($id)=@_; 146: return (<<ENDUPDATESCRIPT); 147: <script type="text/javascript"> 148: // <![CDATA[ 149: function updatePointCoordinates_$id(coordinateName) { 150: var x = document.ggbApplet_$id.getXcoord(coordinateName); 151: var y = document.ggbApplet_$id.getYcoord(coordinateName); 152: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x; 153: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y; 154: } 155: // ]]> 156: </script> 157: ENDUPDATESCRIPT 158: } 159: 160: # 161: # Register the above update-handler for a variable 162: # 163: 164: sub update_register { 165: my ($id,$variable)=@_; 166: return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n"; 167: } 168: 169: # 170: # Set a point coordinate variable 171: # 172: sub set_point_coordinate { 173: my ($id,$variable,$x,$y,$fixed)=@_; 174: my $mult=($fixed?'a*':''); 175: # Get rid of wild exponents, make sure it's a number 176: $x=1.*$x; 177: $y=1.*$y; 178: # GeoGebra does not understand "E" 179: $x=~s/[e|E]/\*10\^/; 180: $x=~s/\+//; 181: $y=~s/[e|E]/\*10\^/; 182: $y=~s/\+//; 183: return (<<ENDSETVARIABLE); 184: document.ggbApplet_$id.evalCommand("a=1"); 185: document.ggbApplet_$id.evalCommand("$variable=$mult($x,$y)"); 186: document.ggbApplet_$id.setLabelVisible("$variable",false); 187: ENDSETVARIABLE 188: } 189: 190: # 191: # Set a slope coordinate variable 192: # 193: sub set_slope_coordinate { 194: my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_; 195: my $xvariable=$variable.'x'; 196: my $yvariable=$variable.'y'; 197: my $domain=$xmax-$xmin; 198: my $range=$ymax-$ymin; 199: my $xinterval=$domain/100.; 200: my $yinterval=$range/200.; 201: my $mult=($fixed?'a*':''); 202: return (<<ENDSETSVARIABLE); 203: document.ggbApplet_$id.evalCommand("a=1"); 204: document.ggbApplet_$id.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]"); 205: document.ggbApplet_$id.setVisible("$xvariable", false); 206: document.ggbApplet_$id.evalCommand("$xvariable=$xrel"); 207: document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]"); 208: document.ggbApplet_$id.setVisible("$yvariable", false); 209: document.ggbApplet_$id.evalCommand("$yvariable=$yrel"); 210: document.ggbApplet_$id.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))"); 211: document.ggbApplet_$id.setLabelVisible("$variable", false); 212: ENDSETSVARIABLE 213: } 214: 215: # 216: # Input field name for a coordinate variable 217: # 218: 219: sub field_name { 220: my ($id,$variable,$name)=@_; 221: return "HWVAL_$id\_$variable\_$name"; 222: } 223: 224: # 225: # Generate an input field for a coordinate variable 226: # 227: 228: sub generate_input_field { 229: my ($id,$variable,$x,$y)=@_; 230: $Apache::functionplotresponse::inputfields.= 231: "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n". 232: "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n"; 233: } 234: 235: # 236: # Initialize a new point coordinate variable at set a listener on it 237: # 238: sub new_point_coordinate { 239: my ($id,$variable,$x,$y,$fixed)=@_; 240: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 241: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 242: } 243: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 244: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 245: } 246: &generate_input_field($id,$variable,$x,$y); 247: return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable); 248: } 249: 250: # 251: # Initialize a new slope coordinate variable at set a listener on it 252: # 253: sub new_slope_coordinate { 254: my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 255: # 256: # $variable: name of the slope point 257: # $x, $y: coordinates of the slope point 258: # $pointname: name of the associated point point 259: # $xp $yp: coordinates of the point point 260: # 261: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 262: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 263: } 264: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 265: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 266: } 267: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) { 268: $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')}; 269: } 270: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) { 271: $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')}; 272: } 273: 274: &generate_input_field($id,$variable,$x,$y); 275: my $xrel=$x-$xp; 276: my $yrel=$y-$yp; 277: return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable); 278: } 279: 280: # 281: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem> 282: # It then starts the right headers 283: # 284: sub start_init_script { 285: my ($id)=@_; 286: # Add id to the list of ggbInit_$id functions that need to be called 287: push(@Apache::functionplotresponse::callscripts,$id); 288: # ... and open this function 289: return (<<ENDSTARTINIT); 290: <script type="text/javascript"> 291: // <![CDATA[ 292: // variable that will eventually be passed back to the server 293: var coordinateMap_$id = []; 294: // flag for not loaded yet 295: var loaded_$id=false; 296: // Init-function for applet 297: function ggbInit_$id() { 298: ENDSTARTINIT 299: } 300: 301: # 302: # This sets the axes inside ggbInit_$id 303: # 304: 305: sub axes_script { 306: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_; 307: return (<<ENDAXESSCRIPT); 308: // changes (xmin, xmax, ymin, ymax) 309: document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax); 310: 311: // makes the (x,y) axis (in)visible 312: document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible); 313: // makes the grid (in)visible 314: document.ggbApplet_$id.setGridVisible($gvisible); 315: ENDAXESSCRIPT 316: } 317: 318: sub axes_label { 319: my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_; 320: unless ($xlabel || $ylabel) { return ''; } 321: my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");'; 322: if ($xlabel) { 323: if (($ymin<0) && ($ymax>0)) { 324: $return.=(<<ENDXAXISLABELSCRIPT); 325: document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)"); 326: document.ggbApplet_$id.setVisible("Xlabel",false); 327: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]"); 328: ENDXAXISLABELSCRIPT 329: } else { 330: $return.=(<<ENDXOFFAXISLABEL); 331: document.ggbApplet_$id.evalCommand("LowerRight=Corner[2]"); 332: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]"); 333: ENDXOFFAXISLABEL 334: } 335: } 336: if ($ylabel) { 337: if (($xmin<0) && ($xmax>0)) { 338: $return.=(<<ENDYAXISLABELSCRIPT); 339: document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)"); 340: document.ggbApplet_$id.setVisible("Ylabel",false); 341: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]"); 342: ENDYAXISLABELSCRIPT 343: } else { 344: $return.=(<<ENDYOFFAXISLABEL); 345: document.ggbApplet_$id.evalCommand("UpperLeft=Corner[4]"); 346: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]"); 347: ENDYOFFAXISLABEL 348: } 349: } 350: return $return; 351: } 352: 353: # 354: # Subroutine to produce background and answer plots 355: # 356: 357: sub plot_script { 358: my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_; 359: $label=~s/\W//g; 360: if (($label) && ($label!~/^[A-Za-z]/)) { 361: $label='C'.$label; 362: } 363: my $visible=0; 364: if ($label) { 365: $visible="1"; 366: } else { 367: $Apache::functionplotresponse::counter++; 368: $label='C'.$Apache::functionplotresponse::counter; 369: } 370: my $rc=0; 371: my $gc=0; 372: my $bc=0; 373: if ($color) { 374: my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/); 375: $rc=hex($rh); 376: $gc=hex($gh); 377: $bc=hex($bh); 378: } 379: if ($fixed) { 380: return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n". 381: ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n"). 382: ($color?"document.ggbApplet_$id.setColor('$label',$rc,$gc,$bc);\n":''). 383: ($thickness?"document.ggbApplet_$id.setLineThickness('$label',$thickness);\n":''); 384: } else { 385: return "document.ggbApplet_$id.evalCommand('y=$function');\n"; 386: } 387: } 388: 389: # 390: # Subroutine to produce objects 391: # 392: 393: sub plotobject_script { 394: my ($id,$label,$x,$y)=@_; 395: unless ($label) { 396: $Apache::functionplotresponse::counter++; 397: $label='O'.$Apache::functionplotresponse::counter; 398: } 399: &generate_input_field($id,$label,$x,$y); 400: return "document.ggbApplet_$id.evalCommand('a=1');\n". 401: "document.ggbApplet_$id.setVisible('a', false);\n". 402: "document.ggbApplet_$id.setLabelVisible('a', false);\n". 403: "document.ggbApplet_$id.evalCommand('$label=a*($x,$y)');\n". 404: "document.ggbApplet_$id.setVisible('$label', true);\n". 405: "document.ggbApplet_$id.setLabelVisible('$label', true);\n"; 406: } 407: 408: # 409: # Subroutine to produce vectors 410: # 411: 412: sub plotvector_script { 413: my ($id,$label,$xs,$ys,$xe,$ye,$xmin,$xmax)=@_; 414: unless ($label) { 415: $Apache::functionplotresponse::counter++; 416: $label='V'.$Apache::functionplotresponse::counter; 417: } 418: my $startlabel=$label.'Start'; 419: my $endlabel=$label.'End'; 420: my $pointlabel=$label.'Point'; 421: my $pointx=2.*($xmax-$xmin)+$xmax; 422: my $anglelabel=$label.'Angle'; 423: return 424: &new_point_coordinate($id,$startlabel,$xs,$ys,0). 425: &new_point_coordinate($id,$endlabel,$xe,$ye,0). 426: (<<ENDVECTOR); 427: document.ggbApplet_$id.evalCommand("$label=Vector[$startlabel,$endlabel]"); 428: document.ggbApplet_$id.setLabelVisible("$label",true); 429: document.ggbApplet_$id.setLineThickness("$label",8); 430: document.ggbApplet_$id.evalCommand("$pointlabel=($pointx,y($startlabel))"); 431: document.ggbApplet_$id.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]"); 432: document.ggbApplet_$id.setLabelVisible("$anglelabel",true); 433: document.ggbApplet_$id.setLabelStyle("$anglelabel",VALUE=2); 434: ENDVECTOR 435: } 436: 437: # 438: # Answer spline display 439: # 440: # points: x,y,slope_x,slope_y 441: 442: sub answer_spline_script { 443: my ($id,@points)=@_; 444: my $order=int(($#points+1)/4); 445: if ($order<2) { $order=2; } 446: if ($order>8) { $order=8; } 447: $Apache::functionplotresponse::counter++; 448: my $label='CSpline'.$Apache::functionplotresponse::counter; 449: my $output='document.ggbApplet_'.$id.'.evalCommand("'.$label.'=Spline'.$order.'['; 450: for (my $i=0;$i<=$#points;$i+=4) { 451: $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),"; 452: } 453: $output=~s/\,$//; 454: $output.=']");'."\n"; 455: for (my $i=2; $i<2*$order; $i+=2) { 456: $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n"; 457: } 458: for (my $i=1; $i<2*$order; $i+=2) { 459: $output.='document.ggbApplet_'.$id.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n"; 460: } 461: 462: return $output; 463: } 464: 465: # 466: # Subroutine that generates code for spline $label based on stored information 467: # 468: 469: sub generate_spline { 470: my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 471: my $result=''; 472: my $order=$Apache::functionplotresponse::splineorder{$label}; 473: my $x=$Apache::functionplotresponse::splineinitx{$label}; 474: my $y=$Apache::functionplotresponse::splineinity{$label}; 475: my $sx=$Apache::functionplotresponse::splinescalex{$label}; 476: my $sy=$Apache::functionplotresponse::splinescaley{$label}; 477: my @coords=(); 478: foreach my $i (1..$order) { 479: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed); 480: my $xp=$x; 481: $x+=$sx/(2.*($order-1)); 482: push(@coords,$label.'P'.$i); 483: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed); 484: $x+=$sx/(2.*($order-1)); 485: push(@coords,$label.'S'.$i); 486: } 487: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 488: return $result; 489: } 490: 491: # 492: # Object 493: # 494: 495: sub start_plotobject { 496: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 497: my $result=''; 498: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 499: my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval); 500: my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval); 501: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 502: $label=~s/\W//gs; 503: $label=ucfirst($label); 504: unless ($label) { $label="NewObject"; } 505: if ($target eq 'web') { 506: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 507: unless (defined($x)) { $x=$xmin; } 508: unless (defined($y)) { $y=$ymin; } 509: $result.=&plotobject_script($internalid,$label,$x,$y); 510: } elsif ($target eq 'edit') { 511: $result=&Apache::edit::tag_start($target,$token,'Plot Object'). 512: &Apache::edit::text_arg('Label on Plot:','label', 513: $token,'16'). 514: &Apache::edit::text_arg('x:','x', 515: $token,'8'). 516: &Apache::edit::text_arg('y:','y', 517: $token,'8'). 518: &Apache::edit::end_row(); 519: } elsif ($target eq 'modified') { 520: $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')}); 521: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y'); 522: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 523: } 524: return $result; 525: } 526: 527: sub end_plotobject { 528: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 529: my $result=''; 530: if ($target eq 'edit') { 531: $result=&Apache::edit::end_table(); 532: } 533: return $result; 534: } 535: 536: # 537: # Vector 538: # 539: 540: sub start_plotvector { 541: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 542: my $result=''; 543: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 544: my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval); 545: my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval); 546: my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval); 547: my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval); 548: 549: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 550: $label=~s/\W//gs; 551: $label=ucfirst($label); 552: unless ($label) { $label="NewVector"; } 553: if ($target eq 'web') { 554: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 555: unless (defined($tailx)) { $tailx=$xmin; } 556: unless (defined($taily)) { $taily=$ymin; } 557: unless (defined($tipx)) { $tipx=$xmin; } 558: unless (defined($tipy)) { $tipy=$ymin; } 559: $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax); 560: } elsif ($target eq 'edit') { 561: $result=&Apache::edit::tag_start($target,$token,'Plot Vector'). 562: &Apache::edit::text_arg('Label on Plot:','label', 563: $token,'16'). 564: &Apache::edit::text_arg('Tail x:','tailx', 565: $token,'8'). 566: &Apache::edit::text_arg('Tail y:','taily', 567: $token,'8'). 568: &Apache::edit::text_arg('Tip x:','tipx', 569: $token,'8'). 570: &Apache::edit::text_arg('Tip y:','tipy', 571: $token,'8'). 572: 573: &Apache::edit::end_row(); 574: } elsif ($target eq 'modified') { 575: $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')}); 576: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy'); 577: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 578: } 579: return $result; 580: } 581: 582: sub end_plotvector { 583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 584: my $result=''; 585: if ($target eq 'edit') { 586: $result=&Apache::edit::end_table(); 587: } 588: return $result; 589: } 590: 591: 592: 593: # 594: # <backgroundplot function="..." fixed="yes/no" /> 595: # 596: sub start_backgroundplot { 597: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 598: my $result=''; 599: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 600: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); 601: my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval); 602: my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval); 603: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 604: my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval); 605: $color=~s/[^a-fA-F0-9]//gs; 606: unless (length($color)==6) { $color=''; } 607: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); 608: 609: unless ($function) { $function="0"; } 610: if ($target eq 'web') { 611: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 612: unless (defined($xinitial)) { $xinitial=$xmin; } 613: unless (defined($xfinal)) { $xfinal=$xmax; } 614: $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal); 615: } elsif ($target eq 'edit') { 616: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot'). 617: &Apache::edit::text_arg('Function:','function', 618: $token,'16'). 619: &Apache::edit::text_arg('Initial x-value (optional):','xinitial', 620: $token,'8'). 621: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 622: $token,'8'). 623: &Apache::edit::text_arg('Label on Plot:','label', 624: $token,'8'). 625: &Apache::edit::text_arg('Color (hex code):','color', 626: $token,'8'). 627: &Apache::edit::select_arg('Fixed location:','fixed', 628: ['yes','no'],$token). 629: &Apache::edit::end_row(); 630: } elsif ($target eq 'modified') { 631: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 632: $safeeval,'function','label','xinitial','xfinal','color','fixed'); 633: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 634: } 635: return $result; 636: } 637: 638: sub end_backgroundplot { 639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 640: my $result=''; 641: if ($target eq 'edit') { 642: $result=&Apache::edit::end_table(); 643: } 644: return $result; 645: } 646: 647: # 648: # <functionplotrule ... /> 649: # 650: sub start_functionplotrule { 651: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 652: my $result=''; 653: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 654: $Apache::functionplotresponse::counter++; 655: if ($label=~/\W/) { 656: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 657: } 658: $label=~s/\W//gs; 659: unless ($label) { 660: $label='R'.$Apache::functionplotresponse::counter; 661: } else { 662: $label='R'.$label; 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 Graph 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 $result; 758: } 759: 760: 761: # 762: # <functionplotvectorrule ... /> 763: # 764: sub start_functionplotvectorrule { 765: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 766: my $result=''; 767: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 768: $Apache::functionplotresponse::counter++; 769: if ($label=~/\W/) { 770: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 771: } 772: $label=~s/\W//gs; 773: unless ($label) { 774: $label='R'.$Apache::functionplotresponse::counter; 775: } else { 776: $label='R'.$label; 777: } 778: 779: if ($target eq 'grade') { 780: # Simply remember - in order - for later 781: 782: my $id=$Apache::inputtags::response[-1]; 783: my $partid=$Apache::inputtags::part; 784: my $internalid = $partid.'_'.$id; 785: 786: my $vector=&Apache::lonxml::get_param('vector',$parstack,$safeeval); 787: $vector=~s/\W//gs; 788: $vector=ucfirst($vector); 789: 790: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( 791: $label, 792: 'vector', 793: $internalid, 794: $vector, 795: &Apache::lonxml::get_param('attachpoint',$parstack,$safeeval), 796: &Apache::lonxml::get_param('notattachpoint',$parstack,$safeeval), 797: &Apache::lonxml::get_param('tailpoint',$parstack,$safeeval), 798: &Apache::lonxml::get_param('tippoint',$parstack,$safeeval), 799: &Apache::lonxml::get_param('nottailpoint',$parstack,$safeeval), 800: &Apache::lonxml::get_param('nottippoint',$parstack,$safeeval), 801: &Apache::lonxml::get_param('length',$parstack,$safeeval), 802: &Apache::lonxml::get_param('angle',$parstack,$safeeval), 803: &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval), 804: &Apache::lonxml::get_param('angleerror',$parstack,$safeeval), 805: ))); 806: } elsif ($target eq 'edit') { 807: $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Rule'). 808: &Apache::edit::text_arg('Index/Name:','index', 809: $token,'10').' '. 810: &Apache::edit::text_arg('Vector:','vector', 811: $token,'16').'<br />'. 812: &Apache::edit::text_arg('Attached to object:','attachpoint', 813: $token,'16'). 814: &Apache::edit::text_arg('Not attached to object:','notattachpoint', 815: $token,'16').'<br />'. 816: &Apache::edit::text_arg('Tail attached to object:','tailpoint', 817: $token,'16'). 818: &Apache::edit::text_arg('Tip attached to object:','tippoint', 819: $token,'16'). 820: &Apache::edit::text_arg('Tail not attached to object:','nottailpoint', 821: $token,'16'). 822: &Apache::edit::text_arg('Tip not attached to object:','nottippoint', 823: $token,'16').'<br />'. 824: &Apache::edit::text_arg('Length:','length', 825: $token,'30'). 826: &Apache::edit::text_arg('Absolute error length:','lengtherror', 827: $token,'8').'<br />'. 828: &Apache::edit::text_arg('Angle:','angle', 829: $token,'30'). 830: &Apache::edit::text_arg('Absolute error angle:','angleerror', 831: $token,'8'). 832: &Apache::edit::end_row(); 833: } elsif ($target eq 'modified') { 834: $env{'form.'.&Apache::edit::html_element_name('vector')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('vector')}); 835: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 836: $safeeval,'index','vector','attachpoint','notattachpoint', 837: 'tailpoint','tippoint','nottailpoint','nottipoint', 838: 'length','angle', 839: 'lengtherror','angleerror'); 840: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 841: } 842: return $result; 843: } 844: 845: sub end_functionplotvectorrule { 846: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 847: my $result=''; 848: if ($target eq 'edit') { 849: $result=&Apache::edit::end_table(); 850: } 851: return $result; 852: } 853: 854: # 855: # <functionplotvectorsumrule ... /> 856: # 857: sub start_functionplotvectorsumrule { 858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 859: my $result=''; 860: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 861: $Apache::functionplotresponse::counter++; 862: if ($label=~/\W/) { 863: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 864: } 865: $label=~s/\W//gs; 866: unless ($label) { 867: $label='R'.$Apache::functionplotresponse::counter; 868: } else { 869: $label='R'.$label; 870: } 871: if ($target eq 'grade') { 872: # Simply remember - in order - for later 873: my $id=$Apache::inputtags::response[-1]; 874: my $partid=$Apache::inputtags::part; 875: my $internalid = $partid.'_'.$id; 876: my $vectors=&Apache::lonxml::get_param('vectors',$parstack,$safeeval); 877: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( 878: $label, 879: 'sum', 880: $internalid, 881: $vectors, 882: &Apache::lonxml::get_param('length',$parstack,$safeeval), 883: &Apache::lonxml::get_param('angle',$parstack,$safeeval), 884: &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval), 885: &Apache::lonxml::get_param('angleerror',$parstack,$safeeval), 886: ))); 887: } elsif ($target eq 'edit') { 888: $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Sum Rule'). 889: &Apache::edit::text_arg('Index/Name:','index', 890: $token,'10').' '. 891: &Apache::edit::text_arg('Comma-separated list of vectors:','vectors', 892: $token,'30').'<br />'. 893: &Apache::edit::text_arg('Sum vector length:','length', 894: $token,'30'). 895: &Apache::edit::text_arg('Absolute error length:','lengtherror', 896: $token,'8').'<br />'. 897: &Apache::edit::text_arg('Sum vector angle:','angle', 898: $token,'30'). 899: &Apache::edit::text_arg('Absolute error angle:','angleerror', 900: $token,'8'). 901: &Apache::edit::end_row(); 902: } elsif ($target eq 'modified') { 903: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 904: $safeeval,'index','vectors', 905: 'length','angle', 906: 'lengtherror','angleerror'); 907: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 908: } 909: return $result; 910: } 911: 912: sub end_functionplotvectorsumrule { 913: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 914: my $result=''; 915: if ($target eq 'edit') { 916: $result=&Apache::edit::end_table(); 917: } 918: return $result; 919: } 920: 921: # 922: # <functionplotcustom ... /> 923: # 924: sub start_functionplotcustomrule { 925: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 926: my $result=''; 927: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 928: $Apache::functionplotresponse::counter++; 929: if ($label=~/\W/) { 930: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 931: } 932: $label=~s/\W//gs; 933: unless ($label) { 934: $label='R'.$Apache::functionplotresponse::counter; 935: } else { 936: $label='R'.$label; 937: } 938: &Apache::lonxml::register('Apache::response',('answer')); 939: if ($target eq 'edit') { 940: $result=&Apache::edit::tag_start($target,$token,'Function Plot Custom Rule'). 941: &Apache::edit::text_arg('Index/Name:','index',$token,'10'). 942: &Apache::edit::end_row(); 943: } elsif ($target eq 'modified') { 944: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'index'); 945: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 946: } 947: return $result; 948: } 949: 950: sub end_functionplotcustomrule { 951: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 952: my $result=''; 953: if ($target eq 'edit') { 954: $result=&Apache::edit::end_table(); 955: } elsif ($target eq 'grade') { 956: # Simply remember - in order - for later 957: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 958: $Apache::functionplotresponse::counter++; 959: if ($label=~/\W/) { 960: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 961: } 962: $label=~s/\W//gs; 963: unless ($label) { 964: $label='R'.$Apache::functionplotresponse::counter; 965: } else { 966: $label='R'.$label; 967: } 968: push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( 969: $label, 970: 'custom', 971: &escape($Apache::response::custom_answer[-1]) 972: ))); 973: } 974: &Apache::lonxml::deregister('Apache::response',('answer')); 975: return $result; 976: } 977: 978: 979: 980: # 981: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> 982: # 983: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them 984: # 985: sub start_spline { 986: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 987: my $result=''; 988: if ($target eq 'web') { 989: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 990: $Apache::functionplotresponse::counter++; 991: if ($label=~/\W/) { 992: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.')); 993: } 994: $label=~s/\W//gs; 995: unless ($label) { 996: $label='S'.$Apache::functionplotresponse::counter; 997: } else { 998: $label='S'.$label; 999: } 1000: if ($Apache::functionplotresponse::splineorder{$label}) { 1001: &Apache::lonxml::error(&mt('Spline indices must be unique.')); 1002: } 1003: 1004: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); 1005: if ($order<2) { $order=2; } 1006: if ($order>8) { $order=8; } 1007: $Apache::functionplotresponse::splineorder{$label}=$order; 1008: 1009: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); 1010: unless ($x) { $x=0; } 1011: $Apache::functionplotresponse::splineinitx{$label}=$x; 1012: 1013: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); 1014: unless ($y) { $y=0; } 1015: $Apache::functionplotresponse::splineinity{$label}=$y; 1016: 1017: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); 1018: unless ($sx) { $sx=$order; } 1019: $Apache::functionplotresponse::splinescalex{$label}=$sx; 1020: 1021: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); 1022: unless ($sy) { $sy=2; } 1023: $Apache::functionplotresponse::splinescaley{$label}=$sy; 1024: } elsif ($target eq 'edit') { 1025: $result=&Apache::edit::tag_start($target,$token,'Spline'). 1026: &Apache::edit::text_arg('Index:','index', 1027: $token,'4').' '. 1028: &Apache::edit::select_arg('Order:','order', 1029: ['2','3','4','5','6','7','8'],$token).' '. 1030: &Apache::edit::text_arg('Initial x-value:','initx', 1031: $token,'4').' '. 1032: &Apache::edit::text_arg('Initial y-value:','inity', 1033: $token,'4').' '. 1034: &Apache::edit::text_arg('Scale x:','scalex', 1035: $token,'4').' '. 1036: &Apache::edit::text_arg('Scale y:','scaley', 1037: $token,'4'). 1038: &Apache::edit::end_row(); 1039: } elsif ($target eq 'modified') { 1040: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 1041: $safeeval,'index','order','initx','inity', 1042: 'scalex','scaley'); 1043: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 1044: } 1045: return $result; 1046: } 1047: 1048: sub end_spline { 1049: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1050: my $result=''; 1051: if ($target eq 'edit') { 1052: $result=&Apache::edit::end_table(); 1053: } 1054: return $result; 1055: } 1056: 1057: sub end_init_script { 1058: return (<<ENDENDINIT); 1059: } 1060: // ]]> 1061: </script> 1062: ENDENDINIT 1063: } 1064: 1065: # 1066: # Storing and restoring spline coordinates from part answers 1067: # 1068: sub decode_previous_answer { 1069: my ($answer)=@_; 1070: foreach my $coordinate (split(/\,/,$answer)) { 1071: my ($key,$value)=split(/\=/,$coordinate); 1072: $Apache::functionplotresponse::previous{$key}=$value; 1073: } 1074: } 1075: 1076: sub get_answer_from_form_fields { 1077: my ($id)=@_; 1078: my $answer=''; 1079: my %coords=(); 1080: foreach my $field (keys(%env)) { 1081: if ($field=~/^form\.HWVAL\_$id/) { 1082: $field=~/^form\.(.*)$/; 1083: $coords{$1}=$env{$field}; 1084: } 1085: } 1086: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); 1087: return ($answer,%coords); 1088: } 1089: 1090: # 1091: # The following functions calculate the cubic-hermite splines server-side 1092: # 1093: 1094: sub cubic_hermite { 1095: my ($t,$p1,$s1,$p2,$s2)=@_; 1096: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+ 1097: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2); 1098: } 1099: 1100: # 1101: # d/dt(...) 1102: # 1103: 1104: sub ddt_cubic_hermite { 1105: my ($t,$p1,$s1,$p2,$s2)=@_; 1106: return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+ 1107: (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2); 1108: } 1109: 1110: # 1111: # d^2/dt^2(...) 1112: # 1113: 1114: sub d2dt2_cubic_hermite { 1115: my ($t,$p1,$s1,$p2,$s2)=@_; 1116: return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+ 1117: (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2); 1118: } 1119: 1120: # 1121: # Array index calculation 1122: # 1123: sub array_index { 1124: my ($xmin,$xmax,$x)=@_; 1125: if ($x ne '') { 1126: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5); 1127: } else { 1128: return undef; 1129: } 1130: } 1131: 1132: # 1133: # Populate the arrays 1134: # 1135: 1136: sub populate_arrays { 1137: my ($id,$xmin,$xmax,$ymin,$ymax)=@_; 1138: for (my $i=0; $i<=400; $i++) { 1139: $Apache::functionplotresponse::actualxval[$i]=undef; 1140: $Apache::functionplotresponse::func[$i]=undef; 1141: $Apache::functionplotresponse::dfuncdx[$i]=undef; 1142: $Apache::functionplotresponse::d2funcd2x[$i]=undef; 1143: } 1144: unless ($xmax>$xmin) { return 'no_func'; } 1145: # Run over all splines in response 1146: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) { 1147: my $xiold=-1; 1148: # Run over all points in spline 1149: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) { 1150: my $ni=$i+1; 1151: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'}, 1152: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'}, 1153: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'}, 1154: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'}); 1155: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'}, 1156: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'}, 1157: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'}, 1158: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'}); 1159: # Run in small steps over spline parameter 1160: for (my $t=0; $t<=1; $t+=0.0001) { 1161: my $xreal=&cubic_hermite($t,@xparms); 1162: my $xi=&array_index($xmin,$xmax,$xreal); 1163: if ($xi<$xiold) { return 'no_func'; } 1164: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { 1165: $xiold=$xi; 1166: $Apache::functionplotresponse::actualxval[$xi]=$xreal; 1167: # Function value 1168: my $funcval=&cubic_hermite($t,@yparms); 1169: 1170: # Do we already have a value for this point, and is it different from the new one? 1171: if ((defined($Apache::functionplotresponse::func[$xi])) && 1172: (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) { 1173: return 'no_func'; 1174: } 1175: # Okay, remember the new point 1176: $Apache::functionplotresponse::func[$xi]=$funcval; 1177: 1178: if (defined($funcval)) { 1179: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { 1180: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; 1181: } 1182: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) { 1183: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi; 1184: } 1185: } 1186: # Chain rule 1187: # dy/dx=dy/dt/(dx/dt) 1188: my $dxdt=&ddt_cubic_hermite($t,@xparms); 1189: if ($dxdt) { 1190: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt; 1191: # Second derivative 1192: $Apache::functionplotresponse::d2funcdx2[$xi]= 1193: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/ 1194: ($dxdt*$dxdt*$dxdt); 1195: } 1196: } 1197: } 1198: } 1199: } 1200: } 1201: 1202: # 1203: # Implementation of <functionplotresponse> 1204: # 1205: 1206: sub start_functionplotresponse { 1207: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1208: my $result=''; 1209: # To remember the splines - somehow, they need to come last 1210: undef %Apache::functionplotresponse::splineorder; 1211: undef %Apache::functionplotresponse::splineinitx; 1212: undef %Apache::functionplotresponse::splineinity; 1213: undef %Apache::functionplotresponse::splinescalex; 1214: undef %Apache::functionplotresponse::splinescaley; 1215: # Remember input fields, etc 1216: undef %Apache::functionplotresponse::previous; 1217: $Apache::functionplotresponse::inputfields=''; 1218: $Apache::functionplotresponse::counter=0; 1219: # Remember rules 1220: undef @Apache::functionplotresponse::functionplotrules; 1221: undef @Apache::functionplotresponse::functionplotvectorrules; 1222: # Remember failed rules 1223: if ($target eq 'grade') { 1224: undef @Apache::functionplotresponse::failedrules; 1225: } 1226: # Delete previous awards 1227: undef $Apache::functionplotresponse::awarddetail; 1228: # Part and ID 1229: my $partid=$Apache::inputtags::part; 1230: my $id=&Apache::response::start_response($parstack,$safeeval); 1231: # Internal ID to mark the applet and its coordinates 1232: my $internalid = $partid.'_'.$id; 1233: # Previous answer 1234: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); 1235: 1236: # Parameters of <functionplotresponse> 1237: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval); 1238: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1239: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1240: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 1241: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval); 1242: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval); 1243: if ($target eq 'edit') { 1244: $result.=&Apache::edit::start_table($token) 1245: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>' 1246: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1247: .&Apache::edit::deletelist($target,$token).'   ' 1248: .&Apache::edit::insertlist($target,$token).'   ' 1249: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses') 1250: .'</span></td>' 1251: ."<td> " 1252: .&Apache::edit::end_row() 1253: .&Apache::edit::start_spanning_row() 1254: ."\n"; 1255: $result.=&Apache::edit::text_arg('Width (pixels):','width', 1256: $token,'6').' '. 1257: &Apache::edit::text_arg('Height (pixels):','height', 1258: $token,'6').'<br />'. 1259: &Apache::edit::text_arg('Label x-axis:','xlabel', 1260: $token,'6').' '. 1261: &Apache::edit::text_arg('Minimum x-value:','xmin', 1262: $token,'4').' '. 1263: &Apache::edit::text_arg('Maximum x-value:','xmax', 1264: $token,'4').' '. 1265: &Apache::edit::select_arg('x-axis visible:','xaxisvisible', 1266: ['yes','no'],$token).'<br />'. 1267: &Apache::edit::text_arg('Label y-axis:','ylabel', 1268: $token,'6').' '. 1269: &Apache::edit::text_arg('Minimum y-value:','ymin', 1270: $token,'4').' '. 1271: &Apache::edit::text_arg('Maximum y-value:','ymax', 1272: $token,'4').' '. 1273: &Apache::edit::select_arg('y-axis visible:','yaxisvisible', 1274: ['yes','no'],$token).'<br />'. 1275: &Apache::edit::select_arg('Grid visible:','gridvisible', 1276: ['yes','no'],$token).'<br />'. 1277: &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):', 1278: 'answerdisplay',$token,'50'). 1279: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 1280: } elsif ($target eq 'modified') { 1281: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 1282: $safeeval,'width','height','xlabel','xmin','xmax','ylabel','ymin','ymax', 1283: 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay'); 1284: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 1285: 1286: } elsif ($target eq 'meta') { 1287: $result=&Apache::response::meta_package_write('functionplotresponse'); 1288: } elsif (($target eq 'answer') && 1289: ($env{'form.answer_output_mode'} ne 'tex') && 1290: ($Apache::lonhomework::viewgrades == 'F')) { 1291: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); 1292: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); 1293: my $start_page = &Apache::loncommon::start_page('Rules Log', undef, 1294: {'only_body' => 1, 1295: 'bgcolor' => '#FFFFFF', 1296: 'js_ready' => 1,}); 1297: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); 1298: $uname =~s/\W//g; 1299: $udom =~s/\W//g; 1300: my $function_name = 1301: join('_','LONCAPA_scriptvars',$uname,$udom, 1302: $env{'form.counter'},$Apache::lonxml::curdepth); 1303: my $rules_var ="<script type=\"text/javascript\"> 1304: // <![CDATA[ 1305: function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". 1306: $Apache::functionplotresponse::ruleslog. 1307: "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} 1308: // ]]> 1309: </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; 1310: &Apache::lonxml::add_script_result($rules_var); 1311: } 1312: 1313: return $result; 1314: } 1315: 1316: sub compare_rel { 1317: my ($relationship,$value,$realval,$tol)=@_; 1318: # is the real value undefined? 1319: unless (defined($realval)) { 1320: # the real value is not defined 1321: if ($relationship eq 'eq') { 1322: if ($value eq 'undef') { 1323: return 1; 1324: } else { 1325: return 0; 1326: } 1327: } elsif ($relationship eq 'ne') { 1328: if ($value eq 'undef') { 1329: return 0; 1330: } else { 1331: return 1; 1332: } 1333: } else { 1334: return 0; 1335: } 1336: } 1337: 1338: # is the expected value undefined? 1339: if ($value eq 'undef') { 1340: # but by now we know that the real value is defined 1341: return 0; 1342: } 1343: 1344: # both are defined. 1345: if ($relationship eq 'gt') { 1346: return ($realval>$value); 1347: } elsif ($relationship eq 'ge') { 1348: return ($realval>$value-$tol); 1349: } elsif ($relationship eq 'lt') { 1350: return ($realval<$value); 1351: } elsif ($relationship eq 'le') { 1352: return ($realval<$value+$tol); 1353: } elsif ($relationship eq 'ne') { 1354: return (abs($value-$realval)>$tol); 1355: } else { 1356: return (abs($value-$realval)<$tol); 1357: } 1358: return 0; 1359: } 1360: 1361: sub addlog { 1362: my ($text)=@_; 1363: $text=~s/\'/\\\'/g; 1364: $Apache::functionplotresponse::ruleslog.=$text.'<br />'; 1365: } 1366: 1367: sub actualval { 1368: my ($i,$xmin,$xmax)=@_; 1369: return $xmin+$i/400.*($xmax-$xmin); 1370: } 1371: 1372: sub fpr_val { 1373: my ($arg)=@_; 1374: return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg}, 1375: $Apache::functionplotresponse::fpr_xmin, 1376: $Apache::functionplotresponse::fpr_xmax); 1377: } 1378: 1379: sub fpr_f { 1380: my ($arg)=@_; 1381: return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin, 1382: $Apache::functionplotresponse::fpr_xmax, 1383: $arg)]; 1384: } 1385: 1386: sub fpr_dfdx { 1387: my ($arg)=@_; 1388: return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin, 1389: $Apache::functionplotresponse::fpr_xmax, 1390: $arg)]; 1391: } 1392: 1393: sub fpr_d2fdx2 { 1394: my ($arg)=@_; 1395: return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin, 1396: $Apache::functionplotresponse::fpr_xmax, 1397: $arg)]; 1398: } 1399: 1400: sub fpr_vectorcoords { 1401: my ($arg)=@_; 1402: $arg=~s/\W//gs; 1403: $arg=ucfirst($arg); 1404: my $id=$Apache::inputtags::response[-1]; 1405: my $partid=$Apache::inputtags::part; 1406: my $internalid = $partid.'_'.$id; 1407: return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_x'}, 1408: $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_x'}, 1409: $env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_y'}, 1410: $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_y'}); 1411: } 1412: 1413: sub fpr_objectcoords { 1414: my ($arg)=@_; 1415: $arg=~s/\W//gs; 1416: $arg=ucfirst($arg); 1417: my $id=$Apache::inputtags::response[-1]; 1418: my $partid=$Apache::inputtags::part; 1419: my $internalid = $partid.'_'.$id; 1420: return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'_x'}, 1421: $env{'form.HWVAL_'.$internalid.'_'.$arg.'_y'}); 1422: } 1423: 1424: sub fpr_vectorlength { 1425: my ($arg)=@_; 1426: my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg); 1427: return sqrt(($xe-$xs)*($xe-$xs)+($ye-$ys)*($ye-$ys)); 1428: } 1429: 1430: sub fpr_vectorangle { 1431: my ($arg)=@_; 1432: my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg); 1433: my $angle=57.2957795*atan2(($ye-$ys),($xe-$xs)); 1434: if ($angle<0) { $angle=360+$angle; } 1435: return $angle; 1436: } 1437: 1438: sub vectorcoords { 1439: my ($id,$label)=@_; 1440: return ($env{'form.HWVAL_'.$id.'_'.$label.'Start_x'}, 1441: $env{'form.HWVAL_'.$id.'_'.$label.'End_x'}, 1442: $env{'form.HWVAL_'.$id.'_'.$label.'Start_y'}, 1443: $env{'form.HWVAL_'.$id.'_'.$label.'End_y'}); 1444: } 1445: 1446: sub objectcoords { 1447: my ($id,$label)=@_; 1448: return ($env{'form.HWVAL_'.$id.'_'.$label.'_x'}, 1449: $env{'form.HWVAL_'.$id.'_'.$label.'_y'}); 1450: } 1451: 1452: sub attached { 1453: my ($id,$vector,$objects,$xmin,$xmax,$ymin,$ymax)=@_; 1454: my ($xs,$xe,$ys,$ye)=&vectorcoords($id,$vector); 1455: my $tolx=($xmax-$xmin)/100.; 1456: my $toly=($ymax-$ymin)/100.; 1457: my $tail=0; 1458: my $tip=0; 1459: foreach my $obj (split(/\s*\,\s*/,$objects)) { 1460: $obj=~s/\W//g; 1461: unless ($obj) { next; } 1462: $obj=ucfirst($obj); 1463: my ($xo,$yo)=&objectcoords($id,$obj); 1464: &addlog("Proximity $vector ($xs,$ys)-($xe,$ye) to $obj ($xo,$yo)"); 1465: if ((abs($xs-$xo)<$tolx) && (abs($ys-$yo)<$toly)) { 1466: $tail=1; 1467: &addlog("Attached tail: $obj"); 1468: } 1469: if ((abs($xe-$xo)<$tolx) && (abs($ye-$yo)<$toly)) { 1470: $tip=1; 1471: &addlog("Attached tip: $obj"); 1472: } 1473: } 1474: &addlog("Result tail:$tail tip:$tip"); 1475: return($tail,$tip); 1476: } 1477: 1478: 1479: sub vectorangle { 1480: my ($x,$y)=@_; 1481: my $angle=57.2957795*atan2($y,$x); 1482: if ($angle<0) { $angle=360+$angle; } 1483: return $angle; 1484: } 1485: 1486: sub vectorlength { 1487: my ($x,$y)=@_; 1488: return sqrt($x*$x+$y*$y); 1489: } 1490: 1491: sub relvector { 1492: my ($xs,$xe,$ys,$ye)=@_; 1493: return ($xe-$xs,$ye-$ys); 1494: } 1495: 1496: sub plotvectorlength { 1497: return &vectorlength(&relvector(&vectorcoords(@_))); 1498: } 1499: 1500: sub plotvectorangle { 1501: return &vectorangle(&relvector(&vectorcoords(@_))); 1502: } 1503: 1504: 1505: # 1506: # Evaluate a functionplotvectorrule 1507: # 1508: 1509: sub functionplotvectorrulecheck { 1510: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1511: &addlog("================="); 1512: my ($label,$type)=split(/\:/,$rule); 1513: if ($type eq 'vector') { 1514: return &vectorcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval); 1515: } elsif ($type eq 'sum') { 1516: return &sumcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval); 1517: } elsif ($type eq 'custom') { 1518: return &customcheck($rule,$safeeval); 1519: } 1520: } 1521: 1522: sub vectorcheck { 1523: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1524: my ($label,$type,$id,$vector, 1525: $attachpoint,$notattachpoint, 1526: $tailpoint,$tippoint,$nottailpoint,$nottippoint, 1527: $length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule); 1528: &addlog("Vector Rule $label for vector ".$vector); 1529: if ($length ne '') { 1530: &addlog("Checking for length $length with error $lengtherror"); 1531: $length=&Apache::run::run($length,$safeeval); 1532: &addlog("Length evaluated to $length"); 1533: my $thislength=&plotvectorlength($id,$vector); 1534: &addlog("Found length $thislength"); 1535: if (abs($thislength-$length)>$lengtherror) { 1536: &setfailed($label); 1537: return 0; 1538: } 1539: } 1540: if ($angle ne '') { 1541: &addlog("Checking for angle $angle with error $angleerror"); 1542: $angle=&Apache::run::run($angle,$safeeval); 1543: &addlog("Angle evaluated to $angle"); 1544: my $thisangle=&plotvectorangle($id,$vector); 1545: &addlog("Found angle $thisangle"); 1546: my $anglediff=abs($thisangle-$angle); 1547: &addlog("Angle difference: $anglediff"); 1548: if ($anglediff>360.-$anglediff) { 1549: $anglediff=360.-$anglediff; 1550: } 1551: &addlog("Smallest angle difference: $anglediff"); 1552: if ($anglediff>$angleerror) { 1553: &setfailed($label); 1554: return 0; 1555: } 1556: } 1557: if ($attachpoint ne '') { 1558: &addlog("Checking attached: ".$attachpoint); 1559: my ($tail,$tip)=&attached($id,$vector,$attachpoint,$xmin,$xmax,$ymin,$ymax); 1560: unless ($tail || $tip) { 1561: &setfailed($label); 1562: return 0; 1563: } 1564: } 1565: if ($notattachpoint ne '') { 1566: &addlog("Checking not attached: ".$notattachpoint); 1567: my ($tail,$tip)=&attached($id,$vector,$notattachpoint,$xmin,$xmax,$ymin,$ymax); 1568: if ($tail || $tip) { 1569: &setfailed($label); 1570: return 0; 1571: } 1572: } 1573: if ($tailpoint ne '') { 1574: &addlog("Checking tail: ".$tailpoint); 1575: my ($tail,$tip)=&attached($id,$vector,$tailpoint,$xmin,$xmax,$ymin,$ymax); 1576: unless ($tail) { 1577: &setfailed($label); 1578: return 0; 1579: } 1580: } 1581: if ($nottailpoint ne '') { 1582: &addlog("Checking not tail: ".$nottailpoint); 1583: my ($tail,$tip)=&attached($id,$vector,$nottailpoint,$xmin,$xmax,$ymin,$ymax); 1584: if ($tail) { 1585: &setfailed($label); 1586: return 0; 1587: } 1588: } 1589: if ($tippoint ne '') { 1590: &addlog("Checking tip: ".$tippoint); 1591: my ($tail,$tip)=&attached($id,$vector,$tippoint,$xmin,$xmax,$ymin,$ymax); 1592: unless ($tip) { 1593: &setfailed($label); 1594: return 0; 1595: } 1596: } 1597: if ($nottippoint ne '') { 1598: &addlog("Checking not tip: ".$nottippoint); 1599: my ($tail,$tip)=&attached($id,$vector,$nottippoint,$xmin,$xmax,$ymin,$ymax); 1600: if ($tip) { 1601: &setfailed($label); 1602: return 0; 1603: } 1604: } 1605: 1606: &addlog("Rule $label passed."); 1607: return 1; 1608: } 1609: 1610: sub sumcheck { 1611: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1612: my ($label,$type,$id,$vectors,$length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule); 1613: &addlog("Vector Sum Rule $label for vectors ".$vectors); 1614: my $sumx=0; 1615: my $sumy=0; 1616: foreach my $sv (split(/\s*\,\s*/,$vectors)) { 1617: my ($rx,$ry)=&relvector(&vectorcoords($id,$sv)); 1618: $sumx+=$rx; 1619: $sumy+=$ry; 1620: } 1621: &addlog("Sum vector ($sumx,$sumy)"); 1622: if ($length ne '') { 1623: &addlog("Checking length $length with error $lengtherror"); 1624: $length=&Apache::run::run($length,$safeeval); 1625: &addlog("Evaluated to $length"); 1626: my $thislength=&vectorlength($sumx,$sumy); 1627: &addlog("Actual length $thislength"); 1628: if (abs($length-$thislength)>$lengtherror) { 1629: &setfailed($label); 1630: return 0; 1631: } 1632: } 1633: if ($angle ne '') { 1634: &addlog("Checking angle $angle with error $angleerror"); 1635: $angle=&Apache::run::run($angle,$safeeval); 1636: &addlog("Evaluated to $angle"); 1637: my $thisangle=&vectorangle($sumx,$sumy); 1638: &addlog("Actual angle $thisangle"); 1639: my $anglediff=abs($thisangle-$angle); 1640: &addlog("Angle difference: $anglediff"); 1641: if ($anglediff>360.-$anglediff) { 1642: $anglediff=360.-$anglediff; 1643: } 1644: &addlog("Smallest angle difference: $anglediff"); 1645: if ($anglediff>$angleerror) { 1646: &setfailed($label); 1647: return 0; 1648: } 1649: } 1650: &addlog("Rule $label passed."); 1651: return 1; 1652: } 1653: 1654: sub customcheck { 1655: my ($rule,$safeeval)=@_; 1656: my ($label,$type,$prg)=split(/\:/,$rule); 1657: &addlog("Custom Rule ".$label); 1658: my $result=&Apache::run::run(&unescape($prg),$safeeval); 1659: &addlog("Algorithm returned $result"); 1660: unless ($result) { 1661: &setfailed($label); 1662: return 0; 1663: } 1664: &addlog("Rule $label passed."); 1665: return 1; 1666: } 1667: 1668: # 1669: # Evaluate a functionplotrule 1670: # 1671: 1672: sub functionplotrulecheck { 1673: my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; 1674: 1675: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) 1676: =split(/\:/,$rule); 1677: $percent=($percent>0?$percent:5); 1678: &addlog("================="); 1679: &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value"); 1680: # 1681: # Evaluate the value 1682: # 1683: if ($value=~/\D/) { 1684: $Apache::functionplotresponse::fpr_xmin=$xmin; 1685: $Apache::functionplotresponse::fpr_xmax=$xmax; 1686: $value=&Apache::run::run($value,$safeeval); 1687: &addlog("Value evaluated to $value"); 1688: } 1689: 1690: # 1691: # Minimum and maximum lengths of the interval 1692: # 1693: if ((defined($minimumlength)) || (defined($maximumlength))) { 1694: &addlog("Minimumlength $minimumlength Maximumlength $maximumlength"); 1695: } 1696: my $li=0; 1697: my $lh=400; 1698: 1699: # Special case: the upper boundary was not defined 1700: # and needs to be set to the value where 1701: # the condition is not true anymore => set flag 1702: 1703: my $findupper=0; 1704: if (($xfinal eq '') 1705: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) 1706: && ($xfinallabel)) { 1707: $findupper=1; 1708: } 1709: 1710: # if a hard value is set for the boundaries, it overrides the label 1711: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) { 1712: $li=&array_index($xmin,$xmax,$xinitial); 1713: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li; 1714: } 1715: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) { 1716: $lh=&array_index($xmin,$xmax,$xfinal); 1717: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh; 1718: } 1719: # if the label is defined, use it 1720: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) { 1721: &addlog("Using lower label $xinitiallabel"); 1722: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}; 1723: } else { 1724: $li=&array_index($xmin,$xmax,$xinitial); 1725: } 1726: unless ($findupper) { 1727: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) { 1728: &addlog("Using upper label $xfinallabel"); 1729: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1; 1730: } else { 1731: $lh=&array_index($xmin,$xmax,$xfinal); 1732: } 1733: } 1734: # Basic sanity checks 1735: if ($li<0) { $li=0; } 1736: if ($lh>400) { $lh=400; } 1737: if (($li>$lh) || (!defined($lh))) { 1738: $lh=$li; 1739: } 1740: 1741: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=". 1742: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))"); 1743: if ($findupper) { 1744: &addlog("Looking for label $xfinallabel"); 1745: } 1746: my $tol=$percent*($ymax-$ymin)/100; 1747: if ($xmax>$xmin) { 1748: if ($derivative==2) { 1749: $tol=4.*$tol/($xmax-$xmin); 1750: } elsif ($derivative==1) { 1751: $tol=2.*$tol/($xmax-$xmin); 1752: } elsif ($derivative==-1) { 1753: $tol=$tol*($xmax-$xmin)/2.; 1754: } 1755: } 1756: my $integral=0; 1757: my $binwidth=($xmax-$xmin)/400.; 1758: if (($derivative<0) && (!$findupper)) { 1759: # definite integral, calculate over whole length 1760: &addlog("Calculating definite integral"); 1761: for (my $i=$li; $i<=$lh; $i++) { 1762: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1763: } 1764: unless (&compare_rel($relationship,$value,$integral,$tol)) { 1765: &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol"); 1766: &addlog("Rule $label failed."); 1767: &setfailed($label); 1768: return 0; 1769: } 1770: } else { 1771: for (my $i=$li; $i<=$lh; $i++) { 1772: my $val; 1773: if ($derivative==2) { 1774: $val=$Apache::functionplotresponse::d2funcdx2[$i]; 1775: } elsif ($derivative==1) { 1776: $val=$Apache::functionplotresponse::dfuncdx[$i]; 1777: } elsif ($derivative==-1) { 1778: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1779: $val=$integral; 1780: } else { 1781: $val=$Apache::functionplotresponse::func[$i]; 1782: } 1783: unless (&compare_rel($relationship,$value,$val,$tol)) { 1784: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); 1785: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); 1786: if (($findupper) && ($i>$li)) { 1787: # Check lengths 1788: unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1789: # Successfully found a new label, set it 1790: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; 1791: &addlog("Rule $label passed, setting label $xfinallabel"); 1792: return 1; 1793: } else { 1794: &addlog("Rule $label failed."); 1795: &setfailed($label); 1796: return 0; 1797: } 1798: } 1799: } 1800: } 1801: # Corner case where this makes sense: using start or stop as defined labels 1802: unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1803: &addlog("Rule $label passed."); 1804: return 1; 1805: } 1806: 1807: # 1808: # check for minimum and maximum lengths 1809: # 1810: 1811: sub checklength { 1812: my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_; 1813: unless (($minimumlength) || ($maximumlength)) { return 1; } 1814: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); 1815: if ($minimumlength) { 1816: if ($length<$minimumlength) { 1817: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); 1818: &setfailed($label); 1819: return 0; 1820: } 1821: } 1822: if ($maximumlength) { 1823: if ($length>$maximumlength) { 1824: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); 1825: &setfailed($label); 1826: return 0; 1827: } 1828: } 1829: return 1; 1830: } 1831: 1832: sub setfailed { 1833: my ($hintlabel)=@_; 1834: $hintlabel=~s/^R//; 1835: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1836: &addlog("Set hint condition $hintlabel"); 1837: } 1838: 1839: sub start_functionplotruleset { 1840: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1841: if ($target eq 'edit') { 1842: return &Apache::edit::start_table($token). 1843: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>' 1844: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1845: .&Apache::edit::deletelist($target,$token).'   '. 1846: &Apache::edit::insertlist($target,$token).'   ' 1847: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules') 1848: .'</span></td>' 1849: ."<td> " 1850: .&Apache::edit::end_row() 1851: .&Apache::edit::start_spanning_row() 1852: ."\n"; 1853: } 1854: } 1855: 1856: sub end_functionplotruleset { 1857: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1858: my $id=$Apache::inputtags::response[-1]; 1859: my $partid=$Apache::inputtags::part; 1860: my $internalid = $partid.'_'.$id; 1861: 1862: if ($target eq 'edit' ) { 1863: return &Apache::edit::end_table(); 1864: } elsif ($target eq 'grade' 1865: && &Apache::response::submitted() 1866: && $Apache::lonhomework::type ne 'exam') { 1867: # 1868: # Actually grade 1869: # 1870: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1871: 1872: my $ad=''; 1873: undef %Apache::functionplotresponse::functionplotrulelabels; 1874: $Apache::functionplotresponse::ruleslog=''; 1875: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; 1876: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; 1877: if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') { 1878: $ad='NOT_FUNCTION'; 1879: } else { 1880: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". 1881: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")"); 1882: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ". 1883: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")"); 1884: 1885: # We have a function that we can actually grade, go through the spline rules. 1886: foreach my $rule (@Apache::functionplotresponse::functionplotrules) { 1887: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { 1888: $ad='INCORRECT'; 1889: last; 1890: } 1891: } 1892: # And now go through the vector rules 1893: foreach my $rule (@Apache::functionplotresponse::functionplotvectorrules) { 1894: unless (&functionplotvectorrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { 1895: $ad='INCORRECT'; 1896: last; 1897: } 1898: } 1899: # If it's not wrong, it's correct 1900: unless ($ad) { $ad='EXACT_ANS' }; 1901: } 1902: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules)); 1903: &addlog("Assigned award detail: $ad"); 1904: # Store for later to be assigned at end_functionplotresponse 1905: $Apache::functionplotresponse::awarddetail=$ad; 1906: } 1907: } 1908: 1909: 1910: sub end_functionplotresponse { 1911: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1912: &Apache::response::end_response; 1913: 1914: my $result; 1915: my $id=$Apache::inputtags::response[-1]; 1916: my $partid=$Apache::inputtags::part; 1917: my $internalid = $partid.'_'.$id; 1918: 1919: if ($target eq 'edit') { $result=&Apache::edit::end_table(); } 1920: if ($target eq 'grade' 1921: && &Apache::response::submitted() 1922: && $Apache::lonhomework::type eq 'exam') { 1923: 1924: &Apache::response::scored_response($partid,$id); 1925: 1926: } elsif ($target eq 'grade' 1927: && &Apache::response::submitted() 1928: && $Apache::lonhomework::type ne 'exam') { 1929: my ($response,%coords)=&get_answer_from_form_fields($internalid); 1930: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 1931: my %previous=&Apache::response::check_for_previous($response,$partid,$id); 1932: # 1933: # Assign grade 1934: # 1935: my $ad=$Apache::functionplotresponse::awarddetail; 1936: # 1937: # Store grading info 1938: # 1939: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad; 1940: &Apache::response::handle_previous(\%previous,$ad); 1941: } elsif ($target eq 'web') { 1942: undef @Apache::functionplotresponse::failedrules; 1943: } 1944: return $result; 1945: } 1946: 1947: sub end_functionplotelements { 1948: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1949: my $result=''; 1950: my $id=$Apache::inputtags::response[-1]; 1951: my $partid=$Apache::inputtags::part; 1952: my $internalid = $partid.'_'.$id; 1953: if ($target eq 'edit' ) { 1954: $result=&Apache::edit::end_table(); 1955: } elsif ($target eq 'web') { 1956: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1957: 1958: # Are we in show answer mode? 1959: my $showanswer=&Apache::response::show_answer(); 1960: if ($showanswer) { 1961: # Render answerdisplay 1962: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2); 1963: if ($answerdisplay=~/\S/s) { 1964: foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) { 1965: my @components=split(/\s*\:\s*/,$plot); 1966: if ($#components<3) { 1967: # Just a simple plot 1968: my ($func,$xl,$xh)=@components; 1969: if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } 1970: if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } 1971: $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); 1972: } else { 1973: # This is a spline 1974: $result.=&answer_spline_script($internalid,@components); 1975: } 1976: } 1977: } 1978: } 1979: my $fixed=0; 1980: if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; } 1981: # Now is the time to render all of the stored splines 1982: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1983: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed); 1984: } 1985: # close the init script 1986: $result.=&end_init_script(); 1987: # register all splines in this response 1988: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'. 1989: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n"; 1990: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1991: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'. 1992: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n"; 1993: } 1994: # generate the input fields 1995: $result.=$Apache::functionplotresponse::inputfields; 1996: # actually start the <applet>-tag 1997: $result.=&geogebra_startcode($internalid, 1998: &Apache::lonxml::get_param('width',$parstack,$safeeval,-2), 1999: &Apache::lonxml::get_param('height',$parstack,$safeeval,-2)); 2000: # load the spline bytecode 2001: $result.=&geogebra_spline_program(); 2002: # set default parameters 2003: $result.=&geogebra_default_parameters($internalid); 2004: # close the <applet>-tag 2005: $result.=&geogebra_endcode(); 2006: } 2007: return $result; 2008: } 2009: 2010: sub boundaries { 2011: my ($parstack,$safeeval,$level)=@_; 2012: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level); 2013: $xmin=(defined($xmin)?$xmin:-10); 2014: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level); 2015: $xmax=(defined($xmax)?$xmax:10); 2016: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level); 2017: $ymin=(defined($ymin)?$ymin:-10); 2018: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level); 2019: $ymax=(defined($ymax)?$ymax:10); 2020: if ($xmax<=$xmin) { 2021: $xmax=$xmin+20; 2022: } 2023: if ($ymax<=$ymin) { 2024: $ymax=$ymin+20; 2025: } 2026: return ($xmin,$xmax,$ymin,$ymax); 2027: } 2028: 2029: sub start_functionplotelements { 2030: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 2031: my $result=''; 2032: my $id=$Apache::inputtags::response[-1]; 2033: my $partid=$Apache::inputtags::part; 2034: my $internalid = $partid.'_'.$id; 2035: 2036: if ($target eq 'edit') { 2037: return &Apache::edit::start_table($token). 2038: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>' 2039: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 2040: .&Apache::edit::deletelist($target,$token).'   '. 2041: &Apache::edit::insertlist($target,$token).'   ' 2042: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements') 2043: .'</span></td>' 2044: ."<td> " 2045: .&Apache::edit::end_row() 2046: .&Apache::edit::start_spanning_row() 2047: ."\n"; 2048: } elsif ($target eq 'web') { 2049: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 2050: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 2051: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 2052: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 2053: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2); 2054: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2); 2055: 2056: 2057: # paste in the update routine to receive stuff back from the applet 2058: $result.=&update_script($internalid); 2059: # start the initscript for this applet 2060: $result.=&start_init_script($internalid); 2061: # put the axis commands inside 2062: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); 2063: $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel); 2064: # init script is left open 2065: } 2066: return $result; 2067: } 2068: 2069: 1; 2070: 2071: __END__ 2072: 2073: =head1 NAME 2074: 2075: Apache::functionplotresponse.pm; 2076: 2077: =head1 SYNOPSIS 2078: 2079: Handles tags associated with accepting function plots. 2080: 2081: This is part of the LearningOnline Network with CAPA project 2082: described at http://www.lon-capa.org. 2083: 2084: =head1 HANDLER SUBROUTINE 2085: 2086: start_functionplotresponse() 2087: 2088: =head1 OTHER SUBROUTINES 2089: 2090: =over 2091: 2092: =item end_functionplotresponse() 2093: 2094: =back 2095: 2096: =cut