loncom/homework/functionplotresponse.pm - view

File: [LON-CAPA] / loncom / homework / functionplotresponse.pm
Revision 1.63: download - view: text, annotated - select for diffs
Fri May 27 23:00:58 2011 UTC (12 years, 11 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_10_0, HEAD

- Needs concatenator instead of ; (added in rev 1.47).

1: # LearningOnline Network with CAPA 2: # option list style responses 3: # 4: # $Id: functionplotresponse.pm,v 1.63 2011/05/27 23:00:58 raeburn 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: 35: BEGIN { 36: &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline', 37: 'functionplotrule','functionplotruleset', 38: 'functionplotelements')); 39: } 40: 41: # 42: # There can be a number of applets on a page, each called ggbApplet_$id, 43: # where $id is the "_"-concatenated part and responseid 44: # 45: 46: sub geogebra_startcode { 47: my ($id)=@_; 48: return (<<ENDSTARTCODE); 49: <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar" 50: codebase="/adm/geogebra/" width="722" height="447" MAYSCRIPT> 51: <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/> 52: ENDSTARTCODE 53: } 54: 55: sub geogebra_endcode { 56: return &Apache::lonhtmlcommon::java_not_enabled()."</applet>\n"; 57: } 58: 59: # 60: # This is the internal GeoGebra bytecode which defines the spline functions 61: # 62: sub geogebra_spline_program { 63: return (<<ENDSPLINEPROGRAM); 64: <param name="ggbBase64" value="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65: ENDSPLINEPROGRAM 66: } 67: 68: # 69: # The standard set of parameters inside <applet> 70: # 71: sub geogebra_default_parameters { 72: my ($id)=@_; 73: return(<<ENDDEFAULTPARAMETERS); 74: <param name="image" value="/adm/lonIcons/lonanim.gif" /> 75: <param name="boxborder" value="false" /> 76: <param name="centerimage" value="true" /> 77: <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" /> 78: <param name="cache_version" value="3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0, 3.9.219.0" /> 79: <param name="framePossible" value="false" /> 80: 81: <param name="showResetIcon" value="false" /> 82: <param name="showAnimationButton" value="false" /> 83: <param name="enableRightClick" value="false" /> 84: <param name="errorDialogsActive" value="true" /> 85: <param name="enableLabelDrags" value="false" /> 86: <param name="showMenuBar" value="false" /> 87: <param name="showToolBar" value="false" /> 88: <param name="showToolBarHelp" value="false" /> 89: <param name="showAlgebraInput" value="false" /> 90: <param name="enableShiftDragZoom" value="false" /> 91: <param name="allowRescaling" value="false" /> 92: <param name="enableLabelDrags" value="false" /> 93: <param name="ggbOnInitParam" value="applet_$id" /> 94: ENDDEFAULTPARAMETERS 95: } 96: 97: # 98: # This subroutine is called by LON-CAPA at </problem> 99: # Each applet on the page will call function ggbOnInit when it is done loading 100: # This function in turn will call the respective function registered by start_init_script 101: # Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit 102: # 103: 104: sub init_script { 105: if ($#Apache::functionplotresponse::callscripts>=0) { 106: my $script=''; 107: foreach my $id (@Apache::functionplotresponse::callscripts) { 108: $script.="if (param=='applet_$id') { loaded_$id=true; }\n"; 109: } 110: $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)). 111: ") { setTimeout('ggbInitAll()',200) }"; 112: my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); 113: return (<<ENDGGBINIT); 114: <script type="text/javascript"> 115: // <![CDATA[ 116: // Function that each applet will call when loaded 117: // It will pass "its" parameter 118: // Set flags for when an applet is loaded, wait till all are loaded, and then some 119: function ggbOnInit(param) { 120: $script 121: } 122: function ggbInitAll() { 123: $calls 124: } 125: // ]]> 126: </script> 127: ENDGGBINIT 128: } 129: } 130: 131: # 132: # Each Geogebra applet is supposed to call this when parameters change 133: # Changes the hidden fields on the web page 134: # 135: sub update_script { 136: my ($id)=@_; 137: return (<<ENDUPDATESCRIPT); 138: <script type="text/javascript"> 139: // <![CDATA[ 140: function updatePointCoordinates_$id(coordinateName) { 141: var x = document.ggbApplet_$id.getXcoord(coordinateName); 142: var y = document.ggbApplet_$id.getYcoord(coordinateName); 143: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_x"].value = x; 144: document.lonhomework.elements["HWVAL_$id\_" + coordinateName + "_y"].value = y; 145: } 146: // ]]> 147: </script> 148: ENDUPDATESCRIPT 149: } 150: 151: # 152: # Register the above update-handler for a variable 153: # 154: 155: sub update_register { 156: my ($id,$variable)=@_; 157: return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n"; 158: } 159: 160: # 161: # Set a point coordinate variable 162: # 163: sub set_point_coordinate { 164: my ($id,$variable,$x,$y,$fixed)=@_; 165: my $mult=($fixed?'a*':''); 166: return (<<ENDSETVARIABLE); 167: document.ggbApplet_$id.evalCommand("a=1"); 168: document.ggbApplet_$id.evalCommand("$variable=$mult($x,$y)"); 169: document.ggbApplet_$id.setLabelVisible("$variable",false); 170: ENDSETVARIABLE 171: } 172: 173: # 174: # Set a slope coordinate variable 175: # 176: sub set_slope_coordinate { 177: my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_; 178: my $xvariable=$variable.'x'; 179: my $yvariable=$variable.'y'; 180: my $domain=$xmax-$xmin; 181: my $range=$ymax-$ymin; 182: my $xinterval=$domain/100.; 183: my $yinterval=$range/200.; 184: my $mult=($fixed?'a*':''); 185: return (<<ENDSETSVARIABLE); 186: document.ggbApplet_$id.evalCommand("a=1"); 187: document.ggbApplet_$id.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]"); 188: document.ggbApplet_$id.setVisible("$xvariable", false); 189: document.ggbApplet_$id.evalCommand("$xvariable=$xrel"); 190: document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]"); 191: document.ggbApplet_$id.setVisible("$yvariable", false); 192: document.ggbApplet_$id.evalCommand("$yvariable=$yrel"); 193: document.ggbApplet_$id.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))"); 194: document.ggbApplet_$id.setLabelVisible("$variable", false); 195: ENDSETSVARIABLE 196: } 197: 198: # 199: # Input field name for a coordinate variable 200: # 201: 202: sub field_name { 203: my ($id,$variable,$name)=@_; 204: return "HWVAL_$id\_$variable\_$name"; 205: } 206: 207: # 208: # Generate an input field for a coordinate variable 209: # 210: 211: sub generate_input_field { 212: my ($id,$variable,$x,$y)=@_; 213: $Apache::functionplotresponse::inputfields.= 214: "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n". 215: "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n"; 216: } 217: 218: # 219: # Initialize a new point coordinate variable at set a listener on it 220: # 221: sub new_point_coordinate { 222: my ($id,$variable,$x,$y,$fixed)=@_; 223: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 224: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 225: } 226: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 227: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 228: } 229: &generate_input_field($id,$variable,$x,$y); 230: return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable); 231: } 232: 233: # 234: # Initialize a new slope coordinate variable at set a listener on it 235: # 236: sub new_slope_coordinate { 237: my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 238: # 239: # $variable: name of the slope point 240: # $x, $y: coordinates of the slope point 241: # $pointname: name of the associated point point 242: # $xp $yp: coordinates of the point point 243: # 244: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 245: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 246: } 247: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 248: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 249: } 250: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) { 251: $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')}; 252: } 253: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) { 254: $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')}; 255: } 256: 257: &generate_input_field($id,$variable,$x,$y); 258: my $xrel=$x-$xp; 259: my $yrel=$y-$yp; 260: return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable); 261: } 262: 263: # 264: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem> 265: # It then starts the right headers 266: # 267: sub start_init_script { 268: my ($id)=@_; 269: # Add id to the list of ggbInit_$id functions that need to be called 270: push(@Apache::functionplotresponse::callscripts,$id); 271: # ... and open this function 272: return (<<ENDSTARTINIT); 273: <script type="text/javascript"> 274: // <![CDATA[ 275: // variable that will eventually be passed back to the server 276: var coordinateMap_$id = []; 277: // flag for not loaded yet 278: var loaded_$id=false; 279: // Init-function for applet 280: function ggbInit_$id() { 281: ENDSTARTINIT 282: } 283: 284: # 285: # This sets the axes inside ggbInit_$id 286: # 287: 288: sub axes_script { 289: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_; 290: return (<<ENDAXESSCRIPT); 291: // changes (xmin, xmax, ymin, ymax) 292: document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax); 293: 294: // makes the (x,y) axis (in)visible 295: document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible); 296: // makes the grid (in)visible 297: document.ggbApplet_$id.setGridVisible($gvisible); 298: ENDAXESSCRIPT 299: } 300: 301: sub axes_label { 302: my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_; 303: unless ($xlabel || $ylabel) { return ''; } 304: my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");'; 305: if ($xlabel) { 306: if (($ymin<0) && ($ymax>0)) { 307: $return.=(<<ENDXAXISLABELSCRIPT); 308: document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)"); 309: document.ggbApplet_$id.setVisible("Xlabel",false); 310: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]"); 311: ENDXAXISLABELSCRIPT 312: } else { 313: $return.=(<<ENDXOFFAXISLABEL); 314: document.ggbApplet_$id.evalCommand("LowerRight=Corner[2]"); 315: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]"); 316: ENDXOFFAXISLABEL 317: } 318: } 319: if ($ylabel) { 320: if (($xmin<0) && ($xmax>0)) { 321: $return.=(<<ENDYAXISLABELSCRIPT); 322: document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)"); 323: document.ggbApplet_$id.setVisible("Ylabel",false); 324: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]"); 325: ENDYAXISLABELSCRIPT 326: } else { 327: $return.=(<<ENDYOFFAXISLABEL); 328: document.ggbApplet_$id.evalCommand("UpperLeft=Corner[4]"); 329: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]"); 330: ENDYOFFAXISLABEL 331: } 332: } 333: return $return; 334: } 335: 336: # 337: # Subroutine to produce background and answer plots 338: # 339: 340: sub plot_script { 341: my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_; 342: $label=~s/\W//g; 343: if (($label) && ($label!~/^[A-Za-z]/)) { 344: $label='C'.$label; 345: } 346: my $visible=0; 347: if ($label) { 348: $visible="1"; 349: } else { 350: $Apache::functionplotresponse::counter++; 351: $label='C'.$Apache::functionplotresponse::counter; 352: } 353: my $rc=0; 354: my $gc=0; 355: my $bc=0; 356: if ($color) { 357: my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/); 358: $rc=hex($rh); 359: $gc=hex($gh); 360: $bc=hex($bh); 361: } 362: if ($fixed) { 363: return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n". 364: ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n"). 365: ($color?"document.ggbApplet_$id.setColor('$label',$rc,$gc,$bc);\n":''). 366: ($thickness?"document.ggbApplet_$id.setLineThickness('$label',$thickness);\n":''); 367: } else { 368: return "document.ggbApplet_$id.evalCommand('y=$function');\n"; 369: } 370: } 371: 372: # 373: # Answer spline display 374: # 375: # points: x,y,slope_x,slope_y 376: 377: sub answer_spline_script { 378: my ($id,@points)=@_; 379: my $order=int(($#points+1)/4); 380: if ($order<2) { $order=2; } 381: if ($order>8) { $order=8; } 382: $Apache::functionplotresponse::counter++; 383: my $label='CSpline'.$Apache::functionplotresponse::counter; 384: my $output='document.ggbApplet_'.$id.'.evalCommand("'.$label.'=Spline'.$order.'['; 385: for (my $i=0;$i<=$#points;$i+=4) { 386: $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),"; 387: } 388: $output=~s/\,$//; 389: $output.=']");'."\n"; 390: for (my $i=2; $i<2*$order; $i+=2) { 391: $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n"; 392: } 393: for (my $i=1; $i<2*$order; $i+=2) { 394: $output.='document.ggbApplet_'.$id.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n"; 395: } 396: 397: return $output; 398: } 399: 400: # 401: # Subroutine that generates code for spline $label based on stored information 402: # 403: 404: sub generate_spline { 405: my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; 406: my $result=''; 407: my $order=$Apache::functionplotresponse::splineorder{$label}; 408: my $x=$Apache::functionplotresponse::splineinitx{$label}; 409: my $y=$Apache::functionplotresponse::splineinity{$label}; 410: my $sx=$Apache::functionplotresponse::splinescalex{$label}; 411: my $sy=$Apache::functionplotresponse::splinescaley{$label}; 412: my @coords=(); 413: foreach my $i (1..$order) { 414: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed); 415: my $xp=$x; 416: $x+=$sx/(2.*($order-1)); 417: push(@coords,$label.'P'.$i); 418: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed); 419: $x+=$sx/(2.*($order-1)); 420: push(@coords,$label.'S'.$i); 421: } 422: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 423: return $result; 424: } 425: # 426: # <backgroundplot function="..." fixed="yes/no" /> 427: # 428: sub start_backgroundplot { 429: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 430: my $result=''; 431: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 432: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); 433: my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval); 434: my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval); 435: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 436: my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval); 437: $color=~s/[^a-fA-F0-9]//gs; 438: unless (length($color)==6) { $color=''; } 439: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); 440: 441: unless ($function) { $function="0"; } 442: if ($target eq 'web') { 443: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 444: unless (defined($xinitial)) { $xinitial=$xmin; } 445: unless (defined($xfinal)) { $xfinal=$xmax; } 446: $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal); 447: } elsif ($target eq 'edit') { 448: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot'). 449: &Apache::edit::text_arg('Function:','function', 450: $token,'16'). 451: &Apache::edit::text_arg('Initial x-value (optional):','xinitial', 452: $token,'8'). 453: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 454: $token,'8'). 455: &Apache::edit::text_arg('Label on Plot:','label', 456: $token,'8'). 457: &Apache::edit::text_arg('Color (hex code):','color', 458: $token,'8'). 459: &Apache::edit::select_arg('Fixed location:','fixed', 460: ['yes','no'],$token). 461: &Apache::edit::end_row(); 462: } elsif ($target eq 'modified') { 463: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 464: $safeeval,'function','label','xinitial','xfinal','color','fixed'); 465: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 466: } 467: return $result; 468: } 469: 470: sub end_backgroundplot { 471: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 472: my $result=''; 473: if ($target eq 'edit') { 474: $result=&Apache::edit::end_table(); 475: } 476: return $result; 477: } 478: 479: # 480: # <functionplotrule ... /> 481: # 482: sub start_functionplotrule { 483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 484: my $result=''; 485: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 486: $Apache::functionplotresponse::counter++; 487: if ($label=~/\W/) { 488: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 489: } 490: $label=~s/\W//gs; 491: unless ($label) { 492: $label='R'.$Apache::functionplotresponse::counter; 493: } else { 494: $label='R'.$label; 495: } 496: if ($Apache::functionplotresponse::splineorder{$label}) { 497: &Apache::lonxml::error(&mt('Rule indices must be unique.')); 498: } 499: 500: 501: if ($target eq 'grade') { 502: # Simply remember - in order - for later 503: my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval); 504: my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval); 505: if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) { 506: &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.')); 507: } 508: $beginninglabel=~s/\W//gs; 509: $endinglabel=~s/\W//gs; 510: my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval); 511: $relationship=~s/\W//gs; 512: $relationship=lc($relationship); 513: unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) { 514: &Apache::lonxml::warning(&mt('Rule relationship not defined.')); 515: $relationship='eq'; 516: } 517: my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval); 518: unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) { 519: &Apache::lonxml::warning(&mt('Rule derivative not defined.')); 520: $derivative=0; 521: } 522: push(@Apache::functionplotresponse::functionplotrules,join(':',( 523: $label, 524: $derivative, 525: &Apache::lonxml::get_param('xinitial',$parstack,$safeeval), 526: $beginninglabel, 527: &Apache::lonxml::get_param('xfinal',$parstack,$safeeval), 528: $endinglabel, 529: &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval), 530: &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval), 531: $relationship, 532: &Apache::lonxml::get_param('value',$parstack,$safeeval), 533: &Apache::lonxml::get_param('percenterror',$parstack,$safeeval) 534: ))); 535: } elsif ($target eq 'edit') { 536: $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule'). 537: &Apache::edit::text_arg('Index/Name:','index', 538: $token,'10').' '. 539: &Apache::edit::select_arg(&mt('Function:'),'derivativeorder', 540: [['0','Function itself'], 541: ['1','First derivative'], 542: ['2','Second derivative'], 543: ['-1','Integral']],$token).'<br />'. 544: &Apache::edit::text_arg('Initial x-value:','xinitial', 545: $token,'8'). 546: &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel', 547: [['start','Start of Plot'], 548: ['end','End of Plot']],$token,'8').'<br />'. 549: 550: &Apache::edit::text_arg('Final x-value (optional):','xfinal', 551: $token,'8'). 552: &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel', 553: [['end','End of Plot']],$token,'8').'<br />'. 554: &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength', 555: $token,'8'). 556: &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength', 557: $token,'8').'<br />'. 558: &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship', 559: [['eq','equal'], 560: ['ne','not equal'], 561: ['ge','greater than or equal'], 562: ['gt','greater than'], 563: ['lt','less than'], 564: ['le','less than or equal']],$token). 565: $result.= &Apache::edit::select_or_text_arg('Value:','value', 566: [['undef','not defined']],$token,'8'). 567: &Apache::edit::text_arg('Percent error:','percenterror', 568: $token,'8'). 569: &Apache::edit::end_row(); 570: } elsif ($target eq 'modified') { 571: if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) { 572: $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}=''; 573: } 574: if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) { 575: $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}=''; 576: } 577: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 578: $safeeval,'index','derivativeorder', 579: 'xinitial','xinitiallabel','xfinal','xfinallabel', 580: 'minimumlength','maximumlength', 581: 'relationship','value','percenterror'); 582: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 583: } 584: return $result; 585: } 586: 587: sub end_functionplotrule { 588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 589: my $result=''; 590: if ($target eq 'edit') { 591: $result=&Apache::edit::end_table(); 592: } 593: return $result; 594: } 595: 596: 597: # 598: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> 599: # 600: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them 601: # 602: sub start_spline { 603: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 604: my $result=''; 605: if ($target eq 'web') { 606: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 607: $Apache::functionplotresponse::counter++; 608: if ($label=~/\W/) { 609: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.')); 610: } 611: $label=~s/\W//gs; 612: unless ($label) { 613: $label='S'.$Apache::functionplotresponse::counter; 614: } else { 615: $label='S'.$label; 616: } 617: if ($Apache::functionplotresponse::splineorder{$label}) { 618: &Apache::lonxml::error(&mt('Spline indices must be unique.')); 619: } 620: 621: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); 622: if ($order<2) { $order=2; } 623: if ($order>8) { $order=8; } 624: $Apache::functionplotresponse::splineorder{$label}=$order; 625: 626: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); 627: unless ($x) { $x=0; } 628: $Apache::functionplotresponse::splineinitx{$label}=$x; 629: 630: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); 631: unless ($y) { $y=0; } 632: $Apache::functionplotresponse::splineinity{$label}=$y; 633: 634: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); 635: unless ($sx) { $sx=$order; } 636: $Apache::functionplotresponse::splinescalex{$label}=$sx; 637: 638: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); 639: unless ($sy) { $sy=2; } 640: $Apache::functionplotresponse::splinescaley{$label}=$sy; 641: } elsif ($target eq 'edit') { 642: $result=&Apache::edit::tag_start($target,$token,'Spline'). 643: &Apache::edit::text_arg('Index:','index', 644: $token,'4').' '. 645: &Apache::edit::select_arg('Order:','order', 646: ['2','3','4','5','6','7','8'],$token).' '. 647: &Apache::edit::text_arg('Initial x-value:','initx', 648: $token,'4').' '. 649: &Apache::edit::text_arg('Initial y-value:','inity', 650: $token,'4').' '. 651: &Apache::edit::text_arg('Scale x:','scalex', 652: $token,'4').' '. 653: &Apache::edit::text_arg('Scale y:','scaley', 654: $token,'4'). 655: &Apache::edit::end_row(); 656: } elsif ($target eq 'modified') { 657: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 658: $safeeval,'index','order','initx','inity', 659: 'scalex','scaley'); 660: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 661: } 662: return $result; 663: } 664: 665: sub end_spline { 666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 667: my $result=''; 668: if ($target eq 'edit') { 669: $result=&Apache::edit::end_table(); 670: } 671: return $result; 672: } 673: 674: sub end_init_script { 675: return (<<ENDENDINIT); 676: } 677: // ]]> 678: </script> 679: ENDENDINIT 680: } 681: 682: # 683: # Storing and restoring spline coordinates from part answers 684: # 685: sub decode_previous_answer { 686: my ($answer)=@_; 687: foreach my $coordinate (split(/\,/,$answer)) { 688: my ($key,$value)=split(/\=/,$coordinate); 689: $Apache::functionplotresponse::previous{$key}=$value; 690: } 691: } 692: 693: sub get_answer_from_form_fields { 694: my ($id)=@_; 695: my $answer=''; 696: my %coords=(); 697: foreach my $field (keys(%env)) { 698: if ($field=~/^form\.HWVAL\_$id/) { 699: $field=~/^form\.(.*)$/; 700: $coords{$1}=$env{$field}; 701: } 702: } 703: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); 704: return ($answer,%coords); 705: } 706: 707: # 708: # The following functions calculate the cubic-hermite splines server-side 709: # 710: 711: sub cubic_hermite { 712: my ($t,$p1,$s1,$p2,$s2)=@_; 713: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+ 714: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 3.*($t*$t*$t-$t*$t) *($s2-$p2); 715: } 716: 717: # 718: # d/dt(...) 719: # 720: 721: sub ddt_cubic_hermite { 722: my ($t,$p1,$s1,$p2,$s2)=@_; 723: return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+ 724: (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t) *($s2-$p2); 725: } 726: 727: # 728: # d^2/dt^2(...) 729: # 730: 731: sub d2dt2_cubic_hermite { 732: my ($t,$p1,$s1,$p2,$s2)=@_; 733: return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+ 734: (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2); 735: } 736: 737: # 738: # Array index calculation 739: # 740: sub array_index { 741: my ($xmin,$xmax,$x)=@_; 742: if ($x ne '') { 743: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5); 744: } else { 745: return undef; 746: } 747: } 748: 749: # 750: # Populate the arrays 751: # 752: 753: sub populate_arrays { 754: my ($id,$xmin,$xmax)=@_; 755: for (my $i=0; $i<=400; $i++) { 756: $Apache::functionplotresponse::actualxval[$i]=undef; 757: $Apache::functionplotresponse::func[$i]=undef; 758: $Apache::functionplotresponse::dfuncdx[$i]=undef; 759: $Apache::functionplotresponse::d2funcd2x[$i]=undef; 760: } 761: unless ($xmax>$xmin) { return 'no_func'; } 762: # Run over all splines in response 763: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) { 764: my $xiold=-1; 765: # Run over all points in spline 766: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) { 767: my $ni=$i+1; 768: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'}, 769: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'}, 770: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'}, 771: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'}); 772: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'}, 773: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'}, 774: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'}, 775: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'}); 776: # Run in small steps over spline parameter 777: for (my $t=0; $t<=1; $t+=0.0001) { 778: my $xreal=&cubic_hermite($t,@xparms); 779: my $xi=&array_index($xmin,$xmax,$xreal); 780: if ($xi<$xiold) { return 'no_func'; } 781: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { 782: if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; } 783: $xiold=$xi; 784: $Apache::functionplotresponse::actualxval[$xi]=$xreal; 785: # Function value 786: my $funcval=&cubic_hermite($t,@yparms); 787: $Apache::functionplotresponse::func[$xi]=$funcval; 788: if (defined($funcval)) { 789: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { 790: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; 791: } 792: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) { 793: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi; 794: } 795: } 796: # Chain rule 797: # dy/dx=dy/dt/(dx/dt) 798: my $dxdt=&ddt_cubic_hermite($t,@xparms); 799: if ($dxdt) { 800: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt; 801: # Second derivative 802: $Apache::functionplotresponse::d2funcdx2[$xi]= 803: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/ 804: ($dxdt*$dxdt*$dxdt); 805: } 806: } 807: } 808: } 809: } 810: } 811: 812: # 813: # Implementation of <functionplotresponse> 814: # 815: 816: sub start_functionplotresponse { 817: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 818: my $result=''; 819: # To remember the splines - somehow, they need to come last 820: undef %Apache::functionplotresponse::splineorder; 821: undef %Apache::functionplotresponse::splineinitx; 822: undef %Apache::functionplotresponse::splineinity; 823: undef %Apache::functionplotresponse::splinescalex; 824: undef %Apache::functionplotresponse::splinescaley; 825: # Remember input fields, etc 826: undef %Apache::functionplotresponse::previous; 827: $Apache::functionplotresponse::inputfields=''; 828: $Apache::functionplotresponse::counter=0; 829: # Remember rules 830: undef @Apache::functionplotresponse::functionplotrules; 831: # Remember failed rules 832: if ($target eq 'grade') { 833: undef @Apache::functionplotresponse::failedrules; 834: } 835: # Delete previous awards 836: undef $Apache::functionplotresponse::awarddetail; 837: # Part and ID 838: my $partid=$Apache::inputtags::part; 839: my $id=&Apache::response::start_response($parstack,$safeeval); 840: # Internal ID to mark the applet and its coordinates 841: my $internalid = $partid.'_'.$id; 842: # Previous answer 843: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); 844: 845: # Parameters of <functionplotresponse> 846: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval); 847: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 848: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 849: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 850: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval); 851: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval); 852: if ($target eq 'edit') { 853: $result.=&Apache::edit::start_table($token) 854: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>' 855: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 856: .&Apache::edit::deletelist($target,$token).'   ' 857: .&Apache::edit::insertlist($target,$token).'   ' 858: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses') 859: .'</span></td>' 860: ."<td> " 861: .&Apache::edit::end_row() 862: .&Apache::edit::start_spanning_row() 863: ."\n"; 864: $result.=&Apache::edit::text_arg('Label x-axis:','xlabel', 865: $token,'6').' '. 866: &Apache::edit::text_arg('Minimum x-value:','xmin', 867: $token,'4').' '. 868: &Apache::edit::text_arg('Maximum x-value:','xmax', 869: $token,'4').' '. 870: &Apache::edit::select_arg('x-axis visible:','xaxisvisible', 871: ['yes','no'],$token).'<br />'. 872: &Apache::edit::text_arg('Label y-axis:','ylabel', 873: $token,'6').' '. 874: &Apache::edit::text_arg('Minimum y-value:','ymin', 875: $token,'4').' '. 876: &Apache::edit::text_arg('Maximum y-value:','ymax', 877: $token,'4').' '. 878: &Apache::edit::select_arg('y-axis visible:','yaxisvisible', 879: ['yes','no'],$token).'<br />'. 880: &Apache::edit::select_arg('Grid visible:','gridvisible', 881: ['yes','no'],$token).'<br />'. 882: &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):', 883: 'answerdisplay',$token,'50'). 884: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 885: } elsif ($target eq 'modified') { 886: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 887: $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', 888: 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay'); 889: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 890: 891: } elsif ($target eq 'meta') { 892: $result=&Apache::response::meta_package_write('functionplotresponse'); 893: } elsif (($target eq 'answer') && 894: ($env{'form.answer_output_mode'} ne 'tex') && 895: ($Apache::lonhomework::viewgrades == 'F')) { 896: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); 897: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); 898: my $start_page = &Apache::loncommon::start_page('Rules Log', undef, 899: {'only_body' => 1, 900: 'bgcolor' => '#FFFFFF', 901: 'js_ready' => 1,}); 902: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); 903: $uname =~s/\W//g; 904: $udom =~s/\W//g; 905: my $function_name = 906: join('_','LONCAPA_scriptvars',$uname,$udom, 907: $env{'form.counter'},$Apache::lonxml::curdepth); 908: my $rules_var ="<script type=\"text/javascript\"> 909: // <![CDATA[ 910: function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". 911: $Apache::functionplotresponse::ruleslog. 912: "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} 913: // ]]> 914: </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; 915: &Apache::lonxml::add_script_result($rules_var); 916: } 917: 918: return $result; 919: } 920: 921: sub compare_rel { 922: my ($relationship,$value,$realval,$tol)=@_; 923: # is the real value undefined? 924: unless (defined($realval)) { 925: # the real value is not defined 926: if ($relationship eq 'eq') { 927: if ($value eq 'undef') { 928: return 1; 929: } else { 930: return 0; 931: } 932: } elsif ($relationship eq 'ne') { 933: if ($value eq 'undef') { 934: return 0; 935: } else { 936: return 1; 937: } 938: } else { 939: return 0; 940: } 941: } 942: 943: # is the expected value undefined? 944: if ($value eq 'undef') { 945: # but by now we know that the real value is defined 946: return 0; 947: } 948: 949: # both are defined. 950: if ($relationship eq 'gt') { 951: return ($realval>$value); 952: } elsif ($relationship eq 'ge') { 953: return ($realval>$value-$tol); 954: } elsif ($relationship eq 'lt') { 955: return ($realval<$value); 956: } elsif ($relationship eq 'le') { 957: return ($realval<$value+$tol); 958: } elsif ($relationship eq 'ne') { 959: return (abs($value-$realval)>$tol); 960: } else { 961: return (abs($value-$realval)<$tol); 962: } 963: return 0; 964: } 965: 966: sub addlog { 967: my ($text)=@_; 968: $Apache::functionplotresponse::ruleslog.=$text.'<br />'; 969: } 970: 971: sub actualval { 972: my ($i,$xmin,$xmax)=@_; 973: return $xmin+$i/400.*($xmax-$xmin); 974: } 975: 976: sub functionplotrulecheck { 977: my ($rule,$xmin,$xmax,$ymin,$ymax)=@_; 978: 979: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) 980: =split(/\:/,$rule); 981: $percent=($percent>0?$percent:5); 982: &addlog("================="); 983: &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value"); 984: if ((defined($minimumlength)) || (defined($maximumlength))) { 985: &addlog("Minimumlength $minimumlength Maximumlength $maximumlength"); 986: } 987: my $li=0; 988: my $lh=400; 989: 990: # Special case: the upper boundary was not defined 991: # and needs to be set to the value where 992: # the condition is not true anymore => set flag 993: 994: my $findupper=0; 995: if (($xfinal eq '') 996: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) 997: && ($xfinallabel)) { 998: $findupper=1; 999: } 1000: 1001: # if a hard value is set for the boundaries, it overrides the label 1002: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) { 1003: $li=&array_index($xmin,$xmax,$xinitial); 1004: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li; 1005: } 1006: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) { 1007: $lh=&array_index($xmin,$xmax,$xfinal); 1008: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh; 1009: } 1010: # if the label is defined, use it 1011: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) { 1012: &addlog("Using lower label $xinitiallabel"); 1013: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}; 1014: } else { 1015: $li=&array_index($xmin,$xmax,$xinitial); 1016: } 1017: unless ($findupper) { 1018: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) { 1019: &addlog("Using upper label $xfinallabel"); 1020: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1; 1021: } else { 1022: $lh=&array_index($xmin,$xmax,$xfinal); 1023: } 1024: } 1025: # Basic sanity checks 1026: if ($li<0) { $li=0; } 1027: if ($lh>400) { $lh=400; } 1028: if (($li>$lh) || (!defined($lh))) { 1029: $lh=$li; 1030: } 1031: 1032: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=". 1033: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))"); 1034: if ($findupper) { 1035: &addlog("Looking for label $xfinallabel"); 1036: } 1037: my $tol=$percent*($ymax-$ymin)/100; 1038: if ($xmax>$xmin) { 1039: if ($derivative==2) { 1040: $tol=4.*$tol/($xmax-$xmin); 1041: } elsif ($derivative==1) { 1042: $tol=2.*$tol/($xmax-$xmin); 1043: } elsif ($derivative==-1) { 1044: $tol=$tol*($xmax-$xmin)/2.; 1045: } 1046: } 1047: my $integral=0; 1048: my $binwidth=($xmax-$xmin)/400.; 1049: if (($derivative<0) && (!$findupper)) { 1050: # definite integral, calculate over whole length 1051: &addlog("Calculating definite integral"); 1052: for (my $i=$li; $i<=$lh; $i++) { 1053: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1054: } 1055: unless (&compare_rel($relationship,$value,$integral,$tol)) { 1056: &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol"); 1057: &addlog("Rule $label failed."); 1058: my $hintlabel=$label; 1059: $hintlabel=~s/^R//; 1060: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1061: &addlog("Set hint condition $hintlabel"); 1062: return 0; 1063: } 1064: } else { 1065: for (my $i=$li; $i<=$lh; $i++) { 1066: my $val; 1067: if ($derivative==2) { 1068: $val=$Apache::functionplotresponse::d2funcdx2[$i]; 1069: } elsif ($derivative==1) { 1070: $val=$Apache::functionplotresponse::dfuncdx[$i]; 1071: } elsif ($derivative==-1) { 1072: $integral+=$Apache::functionplotresponse::func[$i]*$binwidth; 1073: $val=$integral; 1074: } else { 1075: $val=$Apache::functionplotresponse::func[$i]; 1076: } 1077: unless (&compare_rel($relationship,$value,$val,$tol)) { 1078: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); 1079: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); 1080: if (($findupper) && ($i>$li)) { 1081: # Check lengths 1082: unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1083: # Successfully found a new label, set it 1084: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; 1085: &addlog("Rule $label passed, setting label $xfinallabel"); 1086: return 1; 1087: } else { 1088: &addlog("Rule $label failed."); 1089: &setfailed($label); 1090: return 0; 1091: } 1092: } 1093: } 1094: } 1095: # Corner case where this makes sense: using start or stop as defined labels 1096: unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } 1097: &addlog("Rule $label passed."); 1098: return 1; 1099: } 1100: 1101: # 1102: # check for minimum and maximum lengths 1103: # 1104: 1105: sub checklength { 1106: my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_; 1107: unless (($minimumlength) || ($maximumlength)) { return 1; } 1108: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); 1109: if ($minimumlength) { 1110: if ($length<$minimumlength) { 1111: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); 1112: &setfailed($label); 1113: return 0; 1114: } 1115: } 1116: if ($maximumlength) { 1117: if ($length>$maximumlength) { 1118: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); 1119: &setfailed($label); 1120: return 0; 1121: } 1122: } 1123: return 1; 1124: } 1125: 1126: sub setfailed { 1127: my ($label)=@_; 1128: my $hintlabel=$label; 1129: $hintlabel=~s/^R//; 1130: push(@Apache::functionplotresponse::failedrules,$hintlabel); 1131: &addlog("Set hint condition $hintlabel"); 1132: } 1133: 1134: sub start_functionplotruleset { 1135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1136: if ($target eq 'edit') { 1137: return &Apache::edit::start_table($token). 1138: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>' 1139: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1140: .&Apache::edit::deletelist($target,$token).'   '. 1141: &Apache::edit::insertlist($target,$token).'   ' 1142: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules') 1143: .'</span></td>' 1144: ."<td> " 1145: .&Apache::edit::end_row() 1146: .&Apache::edit::start_spanning_row() 1147: ."\n"; 1148: } 1149: } 1150: 1151: sub end_functionplotruleset { 1152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1153: my $id=$Apache::inputtags::response[-1]; 1154: my $partid=$Apache::inputtags::part; 1155: my $internalid = $partid.'_'.$id; 1156: 1157: if ($target eq 'edit' ) { 1158: return &Apache::edit::end_table(); 1159: } elsif ($target eq 'grade' 1160: && &Apache::response::submitted() 1161: && $Apache::lonhomework::type ne 'exam') { 1162: # 1163: # Actually grade 1164: # 1165: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1166: 1167: my $ad=''; 1168: undef %Apache::functionplotresponse::functionplotrulelabels; 1169: $Apache::functionplotresponse::ruleslog=''; 1170: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; 1171: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; 1172: if (&populate_arrays($internalid,$xmin,$xmax) eq 'no_func') { 1173: $ad='NOT_FUNCTION'; 1174: } else { 1175: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". 1176: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")"); 1177: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ". 1178: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")"); 1179: 1180: # We have a function that we can actually grade, go through the spline rules. 1181: foreach my $rule (@Apache::functionplotresponse::functionplotrules) { 1182: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax)) { 1183: $ad='INCORRECT'; 1184: last; 1185: } 1186: } 1187: # If it's not wrong, it's correct 1188: unless ($ad) { $ad='EXACT_ANS' }; 1189: } 1190: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules)); 1191: &addlog("Assigned award detail: $ad"); 1192: # Store for later to be assigned at end_functionplotresponse 1193: $Apache::functionplotresponse::awarddetail=$ad; 1194: } 1195: } 1196: 1197: 1198: sub end_functionplotresponse { 1199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1200: &Apache::response::end_response; 1201: 1202: my $result; 1203: my $id=$Apache::inputtags::response[-1]; 1204: my $partid=$Apache::inputtags::part; 1205: my $internalid = $partid.'_'.$id; 1206: 1207: if ($target eq 'edit') { $result=&Apache::edit::end_table(); } 1208: if ($target eq 'grade' 1209: && &Apache::response::submitted() 1210: && $Apache::lonhomework::type eq 'exam') { 1211: 1212: &Apache::response::scored_response($partid,$id); 1213: 1214: } elsif ($target eq 'grade' 1215: && &Apache::response::submitted() 1216: && $Apache::lonhomework::type ne 'exam') { 1217: my ($response,%coords)=&get_answer_from_form_fields($internalid); 1218: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 1219: my %previous=&Apache::response::check_for_previous($response,$partid,$id); 1220: # 1221: # Assign grade 1222: # 1223: my $ad=$Apache::functionplotresponse::awarddetail; 1224: # 1225: # Store grading info 1226: # 1227: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad; 1228: &Apache::response::handle_previous(\%previous,$ad); 1229: } elsif ($target eq 'web') { 1230: undef @Apache::functionplotresponse::failedrules; 1231: } 1232: return $result; 1233: } 1234: 1235: sub end_functionplotelements { 1236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1237: my $result=''; 1238: my $id=$Apache::inputtags::response[-1]; 1239: my $partid=$Apache::inputtags::part; 1240: my $internalid = $partid.'_'.$id; 1241: if ($target eq 'edit' ) { 1242: $result=&Apache::edit::end_table(); 1243: } elsif ($target eq 'web') { 1244: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1245: 1246: # Are we in show answer mode? 1247: my $showanswer=&Apache::response::show_answer(); 1248: if ($showanswer) { 1249: # Render answerdisplay 1250: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2); 1251: if ($answerdisplay=~/\S/s) { 1252: foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) { 1253: my @components=split(/\s*\:\s*/,$plot); 1254: if ($#components<3) { 1255: # Just a simple plot 1256: my ($func,$xl,$xh)=@components; 1257: if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } 1258: if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } 1259: $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); 1260: } else { 1261: # This is a spline 1262: $result.=&answer_spline_script($internalid,@components); 1263: } 1264: } 1265: } 1266: } 1267: my $fixed=0; 1268: if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; } 1269: # Now is the time to render all of the stored splines 1270: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1271: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed); 1272: } 1273: # close the init script 1274: $result.=&end_init_script(); 1275: # register all splines in this response 1276: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'. 1277: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n"; 1278: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1279: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'. 1280: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n"; 1281: } 1282: # generate the input fields 1283: $result.=$Apache::functionplotresponse::inputfields; 1284: # actually start the <applet>-tag 1285: $result.=&geogebra_startcode($internalid); 1286: # load the spline bytecode 1287: $result.=&geogebra_spline_program(); 1288: # set default parameters 1289: $result.=&geogebra_default_parameters($internalid); 1290: # close the <applet>-tag 1291: $result.=&geogebra_endcode(); 1292: } 1293: return $result; 1294: } 1295: 1296: sub boundaries { 1297: my ($parstack,$safeeval,$level)=@_; 1298: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level); 1299: $xmin=(defined($xmin)?$xmin:-10); 1300: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level); 1301: $xmax=(defined($xmax)?$xmax:10); 1302: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level); 1303: $ymin=(defined($ymin)?$ymin:-10); 1304: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level); 1305: $ymax=(defined($ymax)?$ymax:10); 1306: if ($xmax<=$xmin) { 1307: $xmax=$xmin+20; 1308: } 1309: if ($ymax<=$ymin) { 1310: $ymax=$ymin+20; 1311: } 1312: return ($xmin,$xmax,$ymin,$ymax); 1313: } 1314: 1315: sub start_functionplotelements { 1316: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1317: my $result=''; 1318: my $id=$Apache::inputtags::response[-1]; 1319: my $partid=$Apache::inputtags::part; 1320: my $internalid = $partid.'_'.$id; 1321: 1322: if ($target eq 'edit') { 1323: return &Apache::edit::start_table($token). 1324: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>' 1325: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1326: .&Apache::edit::deletelist($target,$token).'   '. 1327: &Apache::edit::insertlist($target,$token).'   ' 1328: .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements') 1329: .'</span></td>' 1330: ."<td> " 1331: .&Apache::edit::end_row() 1332: .&Apache::edit::start_spanning_row() 1333: ."\n"; 1334: } elsif ($target eq 'web') { 1335: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1336: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1337: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1338: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1339: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2); 1340: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2); 1341: 1342: 1343: # paste in the update routine to receive stuff back from the applet 1344: $result.=&update_script($internalid); 1345: # start the initscript for this applet 1346: $result.=&start_init_script($internalid); 1347: # put the axis commands inside 1348: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); 1349: $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel); 1350: # init script is left open 1351: } 1352: return $result; 1353: } 1354: 1355: 1; 1356: 1357: __END__ 1358: 1359: =head1 NAME 1360: 1361: Apache::functionplotresponse.pm; 1362: 1363: =head1 SYNOPSIS 1364: 1365: Handles tags associated with accepting function plots. 1366: 1367: This is part of the LearningOnline Network with CAPA project 1368: described at http://www.lon-capa.org. 1369: 1370: =head1 HANDLER SUBROUTINE 1371: 1372: start_functionplotresponse() 1373: 1374: =head1 OTHER SUBROUTINES 1375: 1376: =over 1377: 1378: =item end_functionplotresponse() 1379: 1380: =back 1381: 1382: =cut