loncom/homework/functionplotresponse.pm - view

File: [LON-CAPA] / loncom / homework / functionplotresponse.pm
Revision 1.41: download - view: text, annotated - select for diffs
Fri Nov 19 20:03:13 2010 UTC (13 years, 6 months ago) by www
Branches: MAIN
CVS tags: HEAD

Code cleanup

1: # LearningOnline Network with CAPA 2: # option list style responses 3: # 4: # $Id: functionplotresponse.pm,v 1.41 2010/11/19 20:03:13 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: 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_algos.jar, geogebra_export.jar, geogebra_javascript.jar, jlatexmath.jar, jlm_greek.jar, jlm_cyrillic.jar, geogebra_properties.jar" /> 78: <param name="cache_version" value="3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0" /> 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()',20) }"; 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)=@_; 165: return (<<ENDSETVARIABLE); 166: document.ggbApplet_$id.evalCommand("$variable=($x,$y)"); 167: document.ggbApplet_$id.setLabelVisible("$variable",false); 168: ENDSETVARIABLE 169: } 170: 171: # 172: # Set a slope coordinate variable 173: # 174: sub set_slope_coordinate { 175: my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname)=@_; 176: my $xvariable=$variable.'x'; 177: my $yvariable=$variable.'y'; 178: my $domain=$xmax-$xmin; 179: my $range=$ymax-$ymin; 180: my $xinterval=$domain/100.; 181: my $yinterval=$range/200.; 182: return (<<ENDSETSVARIABLE); 183: document.ggbApplet_$id.evalCommand("$xvariable=Slider[0,$domain,$xinterval]"); 184: document.ggbApplet_$id.setVisible("$xvariable", false); 185: document.ggbApplet_$id.evalCommand("$xvariable=$xrel"); 186: document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]"); 187: document.ggbApplet_$id.setVisible("$yvariable", false); 188: document.ggbApplet_$id.evalCommand("$yvariable=$yrel"); 189: document.ggbApplet_$id.evalCommand("$variable=($xvariable+x($pointname),$yvariable+y($pointname))"); 190: document.ggbApplet_$id.setLabelVisible("$variable", false); 191: ENDSETSVARIABLE 192: } 193: 194: # 195: # Input field name for a coordinate variable 196: # 197: 198: sub field_name { 199: my ($id,$variable,$name)=@_; 200: return "HWVAL_$id\_$variable\_$name"; 201: } 202: 203: # 204: # Generate an input field for a coordinate variable 205: # 206: 207: sub generate_input_field { 208: my ($id,$variable,$x,$y)=@_; 209: $Apache::functionplotresponse::inputfields.= 210: "<input type='hidden' name='".&field_name($id,$variable,'x')."' value='$x' />\n". 211: "<input type='hidden' name='".&field_name($id,$variable,'y')."' value='$y' />\n"; 212: } 213: 214: # 215: # Initialize a new point coordinate variable at set a listener on it 216: # 217: sub new_point_coordinate { 218: my ($id,$variable,$x,$y)=@_; 219: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) { 220: $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; 221: } 222: if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) { 223: $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; 224: } 225: &generate_input_field($id,$variable,$x,$y); 226: return &set_point_coordinate($id,$variable,$x,$y).&update_register($id,$variable); 227: } 228: 229: # 230: # Initialize a new slope coordinate variable at set a listener on it 231: # 232: sub new_slope_coordinate { 233: my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax)=@_; 234: # 235: # $variable: name of the slope point 236: # $x, $y: coordinates of the slope point 237: # $pointname: name of the associated point point 238: # $xp $yp: coordinates of the point point 239: # 240: if (defined($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: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) { 247: $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')}; 248: } 249: if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) { 250: $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')}; 251: } 252: 253: &generate_input_field($id,$variable,$x,$y); 254: my $xrel=$x-$xp; 255: my $yrel=$y-$yp; 256: return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname).&update_register($id,$variable); 257: } 258: 259: # 260: # This registers the init-function call for ggbOnInit, which LON-CAPA will place at </problem> 261: # It then starts the right headers 262: # 263: sub start_init_script { 264: my ($id)=@_; 265: # Add id to the list of ggbInit_$id functions that need to be called 266: push(@Apache::functionplotresponse::callscripts,$id); 267: # ... and open this function 268: return (<<ENDSTARTINIT); 269: <script type="text/javascript"> 270: // <![CDATA[ 271: // variable that will eventually be passed back to the server 272: var coordinateMap_$id = []; 273: // flag for not loaded yet 274: var loaded_$id=false; 275: // Init-function for applet 276: function ggbInit_$id() { 277: ENDSTARTINIT 278: } 279: 280: # 281: # This sets the axes inside ggbInit_$id 282: # 283: 284: sub axes_script { 285: my ($id,$xmin,$xmax,$ymin,$ymax,$xvisible,$yvisible,$gvisible)=@_; 286: return (<<ENDAXESSCRIPT); 287: // changes (xmin, xmax, ymin, ymax) 288: document.ggbApplet_$id.setCoordSystem($xmin,$xmax,$ymin,$ymax); 289: 290: // makes the (x,y) axis (in)visible 291: document.ggbApplet_$id.setAxesVisible($xvisible,$yvisible); 292: // makes the grid (in)visible 293: document.ggbApplet_$id.setGridVisible($gvisible); 294: ENDAXESSCRIPT 295: } 296: 297: sub axes_label { 298: my ($id,$xlabel,$ylabel)=@_; 299: unless ($xlabel || $ylabel) { return ''; } 300: my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");'; 301: if ($xlabel) { 302: $return.=(<<ENDXAXISLABELSCRIPT); 303: document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)"); 304: document.ggbApplet_$id.setVisible("Xlabel",false); 305: document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]"); 306: ENDXAXISLABELSCRIPT 307: } 308: if ($ylabel) { 309: $return.=(<<ENDYAXISLABELSCRIPT); 310: document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)"); 311: document.ggbApplet_$id.setVisible("Ylabel",false); 312: document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]"); 313: ENDYAXISLABELSCRIPT 314: } 315: return $return; 316: } 317: 318: sub plot_script { 319: my ($id,$function,$fixed,$label,$xmin,$xmax)=@_; 320: $label=~s/\W//g; 321: if (($label) && ($label!~/^[A-Za-z]/)) { 322: $label='C'.$label; 323: } 324: my $visible=0; 325: if ($label) { 326: $visible="1"; 327: } else { 328: $Apache::functionplotresponse::counter++; 329: $label='C'.$Apache::functionplotresponse::counter; 330: } 331: if ($fixed) { 332: return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]')". 333: ($visible?'':"document.ggbApplet.setLabelVisible('$label', false);"); 334: } else { 335: return "document.ggbApplet_$id.evalCommand('y=$function')"; 336: } 337: } 338: 339: # 340: # Subroutine that generates code for spline $label based on stored information 341: # 342: 343: sub generate_spline { 344: my ($id,$label,$xmin,$xmax,$ymin,$ymax)=@_; 345: my $result=''; 346: my $order=$Apache::functionplotresponse::splineorder{$label}; 347: my $x=$Apache::functionplotresponse::splineinitx{$label}; 348: my $y=$Apache::functionplotresponse::splineinity{$label}; 349: my $sx=$Apache::functionplotresponse::splinescalex{$label}; 350: my $sy=$Apache::functionplotresponse::splinescaley{$label}; 351: my @coords=(); 352: foreach my $i (1..$order) { 353: $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y); 354: my $xp=$x; 355: $x+=$sx/(2.*($order-1)); 356: push(@coords,$label.'P'.$i); 357: $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax); 358: $x+=$sx/(2.*($order-1)); 359: push(@coords,$label.'S'.$i); 360: } 361: $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; 362: return $result; 363: } 364: # 365: # <backgroundplot function="..." fixed="yes/no" /> 366: # 367: sub start_backgroundplot { 368: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 369: my $result=''; 370: my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; 371: my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); 372: my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); 373: my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); 374: 375: unless ($function) { $function="0"; } 376: if ($target eq 'web') { 377: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); 378: $result.=&plot_script($internalid,$function,$fixed,$label,$xmin,$xmax); 379: } elsif ($target eq 'edit') { 380: $result=&Apache::edit::tag_start($target,$token,'Background Function Plot'). 381: &Apache::edit::text_arg('Function:','function', 382: $token,'16'). 383: &Apache::edit::text_arg('Label on Plot:','label', 384: $token,'8'). 385: &Apache::edit::select_arg('Fixed location:','fixed', 386: ['yes','no'],$token). 387: &Apache::edit::end_row(); 388: } elsif ($target eq 'modified') { 389: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 390: $safeeval,'function','label','fixed'); 391: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 392: } 393: return $result; 394: } 395: 396: sub end_backgroundplot { 397: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 398: my $result=''; 399: if ($target eq 'edit') { 400: $result=&Apache::edit::end_table(); 401: } 402: return $result; 403: } 404: 405: # 406: # <functionplotrule ... /> 407: # 408: sub start_functionplotrule { 409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 410: my $result=''; 411: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 412: $Apache::functionplotresponse::counter++; 413: if ($label=~/\W/) { 414: &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); 415: } 416: $label=~s/\W//gs; 417: unless ($label) { 418: $label='R'.$Apache::functionplotresponse::counter; 419: } else { 420: $label='R'.$label; 421: } 422: if ($Apache::functionplotresponse::splineorder{$label}) { 423: &Apache::lonxml::error(&mt('Rule indices must be unique.')); 424: } 425: 426: 427: if ($target eq 'grade') { 428: # Simply remember - in order - for later 429: my $beginninglabel=&Apache::lonxml::get_param('xinitiallabel',$parstack,$safeeval); 430: my $endinglabel=&Apache::lonxml::get_param('xfinallabel',$parstack,$safeeval); 431: if (($beginninglabel=~/\W/) || ($endinglabel=~/W/)) { 432: &Apache::lonxml::warning(&mt('Rule labels must be alphanumeric.')); 433: } 434: $beginninglabel=~s/\W//gs; 435: $endinglabel=~s/\W//gs; 436: my $relationship=&Apache::lonxml::get_param('relationship',$parstack,$safeeval); 437: $relationship=~s/\W//gs; 438: $relationship=lc($relationship); 439: unless ($relationship=~/^(eq|ge|gt|le|lt|ne)$/) { 440: &Apache::lonxml::warning(&mt('Rule relationship not defined.')); 441: $relationship='eq'; 442: } 443: my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval); 444: unless (($derivative==0) || ($derivative==1) || ($derivative==2)) { 445: &Apache::lonxml::warning(&mt('Rule derivative not defined.')); 446: $derivative=0; 447: } 448: push(@Apache::functionplotresponse::functionplotrules,join(':',( 449: $label, 450: $derivative, 451: &Apache::lonxml::get_param('xinitial',$parstack,$safeeval), 452: $beginninglabel, 453: &Apache::lonxml::get_param('xfinal',$parstack,$safeeval), 454: $endinglabel, 455: &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval), 456: &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval), 457: $relationship, 458: &Apache::lonxml::get_param('value',$parstack,$safeeval), 459: &Apache::lonxml::get_param('percenterror',$parstack,$safeeval) 460: ))); 461: } elsif ($target eq 'edit') { 462: $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule'). 463: &Apache::edit::text_arg('Index/Name:','index', 464: $token,'10').' '. 465: &Apache::edit::select_arg(&mt('Function:'),'derivativeorder', 466: [['0','Function itself'], 467: ['1','First derivative'], 468: ['2','Second derivative']],$token).'<br />'. 469: &Apache::edit::text_arg('(Initial) x-value:','xinitial', 470: $token,'8'). 471: &Apache::edit::select_or_text_arg('(Initial) x-value label:','xinitiallabel', 472: [['start','Start of Plot']],$token,'8').'<br />'. 473: 474: &Apache::edit::text_arg('Optional final x-value for ranges:','xfinal', 475: $token,'8'). 476: &Apache::edit::select_or_text_arg('Optional final x-value label:','xfinallabel', 477: [['end','End of Plot']],$token,'8').'<br />'. 478: &Apache::edit::text_arg('Optional minimum length for range:','minimumlength', 479: $token,'8'). 480: &Apache::edit::text_arg('Optional maximum length for range:','maximumlength', 481: $token,'8').'<br />'. 482: &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship', 483: [['eq','equal'], 484: ['ne','not equal'], 485: ['ge','greater than or equal'], 486: ['gt','greater than'], 487: ['lt','less than'], 488: ['le','less than or equal']],$token). 489: $result.= &Apache::edit::select_or_text_arg('Value:','value', 490: [['undef','not defined']],$token,'8'). 491: &Apache::edit::text_arg('Percent error:','percenterror', 492: $token,'8'). 493: &Apache::edit::end_row(); 494: } elsif ($target eq 'modified') { 495: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 496: $safeeval,'index','derivativeorder', 497: 'xinitial','xinitiallabel','xfinal','xfinallabel', 498: 'minimumlength','maximumlength', 499: 'relationship','value','percenterror'); 500: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 501: } 502: return $result; 503: } 504: 505: sub end_functionplotrule { 506: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 507: my $result=''; 508: if ($target eq 'edit') { 509: $result=&Apache::edit::end_table(); 510: } 511: return $result; 512: } 513: 514: 515: # 516: # <spline index="..." order="1,2,3,4" initx="..." inity="..." scalex="..." scaley="..." /> 517: # 518: # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them 519: # 520: sub start_spline { 521: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 522: my $result=''; 523: if ($target eq 'web') { 524: my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); 525: $Apache::functionplotresponse::counter++; 526: if ($label=~/\W/) { 527: &Apache::lonxml::warning(&mt('Spline indices should only contain alphanumeric characters.')); 528: } 529: $label=~s/\W//gs; 530: unless ($label) { 531: $label='S'.$Apache::functionplotresponse::counter; 532: } else { 533: $label='S'.$label; 534: } 535: if ($Apache::functionplotresponse::splineorder{$label}) { 536: &Apache::lonxml::error(&mt('Spline indices must be unique.')); 537: } 538: 539: my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); 540: if ($order<2) { $order=2; } 541: if ($order>8) { $order=8; } 542: $Apache::functionplotresponse::splineorder{$label}=$order; 543: 544: my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); 545: unless ($x) { $x=0; } 546: $Apache::functionplotresponse::splineinitx{$label}=$x; 547: 548: my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); 549: unless ($y) { $y=0; } 550: $Apache::functionplotresponse::splineinity{$label}=$y; 551: 552: my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); 553: unless ($sx) { $sx=$order; } 554: $Apache::functionplotresponse::splinescalex{$label}=$sx; 555: 556: my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); 557: unless ($sy) { $sy=2; } 558: $Apache::functionplotresponse::splinescaley{$label}=$sy; 559: } elsif ($target eq 'edit') { 560: $result=&Apache::edit::tag_start($target,$token,'Spline'). 561: &Apache::edit::text_arg('Index:','index', 562: $token,'4').' '. 563: &Apache::edit::select_arg('Order:','order', 564: ['2','3','4','5','6','7','8','9'],$token).' '. 565: &Apache::edit::text_arg('Initial x-value:','initx', 566: $token,'4').' '. 567: &Apache::edit::text_arg('Initial y-value:','inity', 568: $token,'4').' '. 569: &Apache::edit::text_arg('Scale x:','scalex', 570: $token,'4').' '. 571: &Apache::edit::text_arg('Scale y:','scaley', 572: $token,'4'). 573: &Apache::edit::end_row(); 574: } elsif ($target eq 'modified') { 575: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 576: $safeeval,'index','order','initx','inity', 577: 'scalex','scaley'); 578: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } 579: } 580: return $result; 581: } 582: 583: sub end_spline { 584: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 585: my $result=''; 586: if ($target eq 'edit') { 587: $result=&Apache::edit::end_table(); 588: } 589: return $result; 590: } 591: 592: sub end_init_script { 593: return (<<ENDENDINIT); 594: } 595: // ]]> 596: </script> 597: ENDENDINIT 598: } 599: 600: # 601: # Storing and restoring spline coordinates from part answers 602: # 603: sub decode_previous_answer { 604: my ($answer)=@_; 605: foreach my $coordinate (split(/\,/,$answer)) { 606: my ($key,$value)=split(/\=/,$coordinate); 607: $Apache::functionplotresponse::previous{$key}=$value; 608: } 609: } 610: 611: sub get_answer_from_form_fields { 612: my ($id)=@_; 613: my $answer=''; 614: my %coords=(); 615: foreach my $field (keys(%env)) { 616: if ($field=~/^form\.HWVAL\_$id/) { 617: $field=~/^form\.(.*)$/; 618: $coords{$1}=$env{$field}; 619: } 620: } 621: $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); 622: return ($answer,%coords); 623: } 624: 625: # 626: # The following functions calculate the cubic-hermite splines server-side 627: # 628: 629: sub cubic_hermite { 630: my ($t,$p1,$s1,$p2,$s2)=@_; 631: return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 5.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+ 632: (-2.*$t*$t*$t+3.*$t*$t) *$p2 + 5.*($t*$t*$t-$t*$t) *($s2-$p2); 633: } 634: 635: # 636: # d/dt(...) 637: # 638: 639: sub ddt_cubic_hermite { 640: my ($t,$p1,$s1,$p2,$s2)=@_; 641: return (6.*$t*$t-6.*$t) *$p1 + 5.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+ 642: (-6.*$t*$t+6.*$t)*$p2 + 5.*(3.*$t*$t-2.*$t) *($s2-$p2); 643: } 644: 645: # 646: # d^2/dt^2(...) 647: # 648: 649: sub d2dt2_cubic_hermite { 650: my ($t,$p1,$s1,$p2,$s2)=@_; 651: return (12.*$t-6.) *$p1 + 5.*(6.*$t-4.)*($s1-$p1)+ 652: (-12.*$t+6.)*$p2 + 5.*(6.*$t-2.)*($s2-$p2); 653: } 654: 655: # 656: # Array index calculation 657: # 658: sub array_index { 659: my ($xmin,$xmax,$x)=@_; 660: if ($x ne '') { 661: return int(($x-$xmin)/($xmax-$xmin)*400.+0.5); 662: } else { 663: return undef; 664: } 665: } 666: 667: # 668: # Populate the arrays 669: # 670: 671: sub populate_arrays { 672: my ($id,$xmin,$xmax)=@_; 673: for (my $i=0; $i<=400; $i++) { 674: $Apache::functionplotresponse::actualxval[$i]=undef; 675: $Apache::functionplotresponse::func[$i]=undef; 676: $Apache::functionplotresponse::dfuncdx[$i]=undef; 677: $Apache::functionplotresponse::d2funcd2x[$i]=undef; 678: } 679: unless ($xmax>$xmin) { return 'no_func'; } 680: # Run over all splines in response 681: foreach my $label (split(/\,/,$env{"form.HWVAL_AllSplines_$id"})) { 682: my $xiold=-1; 683: # Run over all points in spline 684: for (my $i=1; $i<$env{"form.HWVAL_SplineOrder_".$id."_".$label}; $i++) { 685: my $ni=$i+1; 686: my @xparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_x'}, 687: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_x'}, 688: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_x'}, 689: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_x'}); 690: my @yparms=($env{'form.HWVAL_'.$id.'_'.$label.'P'.$i.'_y'}, 691: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$i.'_y'}, 692: $env{'form.HWVAL_'.$id.'_'.$label.'P'.$ni.'_y'}, 693: $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'}); 694: # Run in small steps over spline parameter 695: for (my $t=0; $t<=1; $t+=0.0001) { 696: my $xreal=&cubic_hermite($t,@xparms); 697: my $xi=&array_index($xmin,$xmax,$xreal); 698: if ($xi<$xiold) { return 'no_func'; } 699: if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { 700: if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; } 701: $xiold=$xi; 702: $Apache::functionplotresponse::actualxval[$xi]=$xreal; 703: # Function value 704: my $funcval=&cubic_hermite($t,@yparms); 705: $Apache::functionplotresponse::func[$xi]=$funcval; 706: if (defined($funcval)) { 707: if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { 708: $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; 709: } 710: if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) { 711: $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi; 712: } 713: } 714: # Chain rule 715: # dy/dx=dy/dt/(dx/dt) 716: my $dxdt=&ddt_cubic_hermite($t,@xparms); 717: if ($dxdt) { 718: $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt; 719: # Second derivative 720: $Apache::functionplotresponse::d2funcdx2[$xi]= 721: ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/ 722: ($dxdt*$dxdt*$dxdt); 723: } 724: } 725: } 726: } 727: } 728: } 729: 730: # 731: # Implementation of <functionplotresponse> 732: # 733: 734: sub start_functionplotresponse { 735: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 736: my $result=''; 737: # To remember the splines - somehow, they need to come last 738: undef %Apache::functionplotresponse::splineorder; 739: undef %Apache::functionplotresponse::splineinitx; 740: undef %Apache::functionplotresponse::splineinity; 741: undef %Apache::functionplotresponse::splinescalex; 742: undef %Apache::functionplotresponse::splinescaley; 743: # Remember input fields, etc 744: undef %Apache::functionplotresponse::previous; 745: $Apache::functionplotresponse::inputfields=''; 746: $Apache::functionplotresponse::counter=0; 747: # Remember rules 748: undef @Apache::functionplotresponse::functionplotrules; 749: # Remember failed rules 750: if ($target eq 'grade') { 751: undef @Apache::functionplotresponse::failedrules; 752: } 753: # Delete previous awards 754: undef $Apache::functionplotresponse::awarddetail; 755: # Part and ID 756: my $partid=$Apache::inputtags::part; 757: my $id=&Apache::response::start_response($parstack,$safeeval); 758: # Internal ID to mark the applet and its coordinates 759: my $internalid = $partid.'_'.$id; 760: # Previous answer 761: &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); 762: 763: # Parameters of <functionplotresponse> 764: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval); 765: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 766: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 767: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); 768: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval); 769: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval); 770: if ($target eq 'edit') { 771: $result.=&Apache::edit::start_table($token) 772: .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>' 773: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 774: .&Apache::edit::deletelist($target,$token).'   ' 775: .&Apache::edit::insertlist($target,$token) 776: .'</span></td>' 777: ."<td> " 778: .&Apache::edit::end_row() 779: .&Apache::edit::start_spanning_row() 780: ."\n"; 781: $result.=&Apache::edit::text_arg('Label x-axis:','xlabel', 782: $token,'6').' '. 783: &Apache::edit::text_arg('Minimum x-value:','xmin', 784: $token,'4').' '. 785: &Apache::edit::text_arg('Maximum x-value:','xmax', 786: $token,'4').' '. 787: &Apache::edit::select_arg('x-axis visible:','xaxisvisible', 788: ['yes','no'],$token).'<br />'. 789: &Apache::edit::text_arg('Label y-axis:','ylabel', 790: $token,'6').' '. 791: &Apache::edit::text_arg('Minimum y-value:','ymin', 792: $token,'4').' '. 793: &Apache::edit::text_arg('Maximum y-value:','ymax', 794: $token,'4').' '. 795: &Apache::edit::select_arg('y-axis visible:','yaxisvisible', 796: ['yes','no'],$token).'<br />'. 797: &Apache::edit::select_arg('Grid visible:','gridvisible', 798: ['yes','no'],$token). 799: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 800: } elsif ($target eq 'modified') { 801: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 802: $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', 803: 'xaxisvisible','yaxisvisible','gridvisible'); 804: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 805: 806: } elsif ($target eq 'meta') { 807: $result=&Apache::response::meta_package_write('functionplotresponse'); 808: } elsif (($target eq 'answer') && 809: ($env{'form.answer_output_mode'} ne 'tex') && 810: ($Apache::lonhomework::viewgrades == 'F')) { 811: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); 812: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); 813: my $start_page = &Apache::loncommon::start_page('Rules Log', undef, 814: {'only_body' => 1, 815: 'bgcolor' => '#FFFFFF', 816: 'js_ready' => 1,}); 817: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); 818: $uname =~s/\W//g; 819: $udom =~s/\W//g; 820: my $function_name = 821: join('_','LONCAPA_scriptvars',$uname,$udom, 822: $env{'form.counter'},$Apache::lonxml::curdepth); 823: my $rules_var ="<script type=\"text/javascript\"> 824: // <![CDATA[ 825: function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>". 826: $Apache::functionplotresponse::ruleslog. 827: "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()} 828: // ]]> 829: </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />"; 830: &Apache::lonxml::add_script_result($rules_var); 831: } 832: 833: return $result; 834: } 835: 836: sub compare_rel { 837: my ($relationship,$value,$realval,$tol)=@_; 838: # is the real value undefined? 839: unless (defined($realval)) { 840: # the real value is not defined 841: if ($relationship eq 'eq') { 842: if ($value eq 'undef') { 843: return 1; 844: } else { 845: return 0; 846: } 847: } elsif ($relationship eq 'ne') { 848: if ($value eq 'undef') { 849: return 0; 850: } else { 851: return 1; 852: } 853: } else { 854: return 0; 855: } 856: } 857: 858: # is the expected value undefined? 859: if ($value eq 'undef') { 860: # but by now we know that the real value is defined 861: return 0; 862: } 863: 864: # both are defined. 865: if ($relationship eq 'gt') { 866: return ($realval>$value); 867: } elsif ($relationship eq 'ge') { 868: return ($realval>$value-$tol); 869: } elsif ($relationship eq 'lt') { 870: return ($realval<$value); 871: } elsif ($relationship eq 'le') { 872: return ($realval<$value+$tol); 873: } elsif ($relationship eq 'ne') { 874: return (abs($value-$realval)>$tol); 875: } else { 876: return (abs($value-$realval)<$tol); 877: } 878: return 0; 879: } 880: 881: sub addlog { 882: my ($text)=@_; 883: $Apache::functionplotresponse::ruleslog.=$text.'<br />'; 884: } 885: 886: sub actualval { 887: my ($i,$xmin,$xmax)=@_; 888: return $xmin+$i/400.*($xmax-$xmin); 889: } 890: 891: sub functionplotrulecheck { 892: my ($rule,$xmin,$xmax,$ymin,$ymax)=@_; 893: 894: my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) 895: =split(/\:/,$rule); 896: $percent=($percent>0?$percent:5); 897: &addlog("================="); 898: &addlog("Rule $label for ".('function itself','first derivative','second derivative')[$derivative]." $relationship $value"); 899: my $li=0; 900: my $lh=400; 901: 902: # Special case: the upper boundary was not defined 903: # and needs to be set to the value where 904: # the condition is not true anymore => set flag 905: 906: my $findupper=0; 907: if (($xfinal eq '') 908: && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) 909: && ($xfinallabel)) { 910: $findupper=1; 911: } 912: 913: # if a hard value is set for the boundaries, it overrides the label 914: if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) { 915: $li=&array_index($xmin,$xmax,$xinitial); 916: $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li; 917: } 918: if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) { 919: $lh=&array_index($xmin,$xmax,$xfinal); 920: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh; 921: } 922: # if the label is defined, use it 923: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) { 924: &addlog("Using lower label $xinitiallabel"); 925: $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}; 926: } else { 927: $li=&array_index($xmin,$xmax,$xinitial); 928: } 929: unless ($findupper) { 930: if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) { 931: &addlog("Using upper label $xfinallabel"); 932: $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1; 933: } else { 934: $lh=&array_index($xmin,$xmax,$xfinal); 935: } 936: } 937: # Basic sanity checks 938: if ($li<0) { $li=0; } 939: if ($lh>400) { $lh=400; } 940: if (($li>$lh) || (!defined($lh))) { 941: $lh=$li; 942: } 943: 944: &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=". 945: &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))"); 946: if ($findupper) { 947: &addlog("Looking for label $xfinallabel"); 948: } 949: my $tol=$percent*($ymax-$ymin)/100; 950: if ($xmax>$xmin) { 951: if ($derivative==2) { 952: $tol=4.*$tol/($xmax-$xmin); 953: } elsif ($derivative==1) { 954: $tol=2.*$tol/($xmax-$xmin); 955: } 956: } 957: for (my $i=$li; $i<=$lh; $i++) { 958: my $val; 959: if ($derivative==2) { 960: $val=$Apache::functionplotresponse::d2funcdx2[$i]; 961: } elsif ($derivative==1) { 962: $val=$Apache::functionplotresponse::dfuncdx[$i]; 963: } else { 964: $val=$Apache::functionplotresponse::func[$i]; 965: } 966: unless (&compare_rel($relationship,$value,$val,$tol)) { 967: &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); 968: &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); 969: if (($findupper) && ($i>$li)) { 970: # check for minimum and maximum lengths 971: my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); 972: if ($minimumlength) { 973: if ($length<$minimumlength) { 974: &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); 975: return 0; 976: } 977: } 978: if ($maximumlength) { 979: if ($length>$maximumlength) { 980: &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); 981: return 0; 982: } 983: } 984: $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; 985: &addlog("Rule $label passed, setting label $xfinallabel"); 986: return 1; 987: } else { 988: &addlog("Rule $label failed."); 989: my $hintlabel=$label; 990: $hintlabel=~s/^R//; 991: push(@Apache::functionplotresponse::failedrules,$hintlabel); 992: &addlog("Set hint condition $hintlabel"); 993: return 0; 994: } 995: } 996: } 997: &addlog("Rule $label passed."); 998: return 1; 999: } 1000: 1001: sub start_functionplotruleset { 1002: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1003: if ($target eq 'edit') { 1004: return &Apache::edit::start_table($token). 1005: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>' 1006: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1007: .&Apache::edit::deletelist($target,$token).'   '. 1008: &Apache::edit::insertlist($target,$token) 1009: .'</span></td>' 1010: ."<td> " 1011: .&Apache::edit::end_row() 1012: .&Apache::edit::start_spanning_row() 1013: ."\n"; 1014: } 1015: } 1016: 1017: sub end_functionplotruleset { 1018: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1019: my $id=$Apache::inputtags::response[-1]; 1020: my $partid=$Apache::inputtags::part; 1021: my $internalid = $partid.'_'.$id; 1022: 1023: if ($target eq 'edit' ) { 1024: return &Apache::edit::end_table(); 1025: } elsif ($target eq 'grade' 1026: && &Apache::response::submitted() 1027: && $Apache::lonhomework::type ne 'exam') { 1028: # 1029: # Actually grade 1030: # 1031: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1032: 1033: my $ad=''; 1034: undef %Apache::functionplotresponse::functionplotrulelabels; 1035: $Apache::functionplotresponse::ruleslog=''; 1036: $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; 1037: $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; 1038: if (&populate_arrays($internalid,$xmin,$xmax) eq 'no_func') { 1039: $ad='NOT_FUNCTION'; 1040: } else { 1041: &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". 1042: $Apache::functionplotresponse::functionplotrulelabels{'start'}.")"); 1043: &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ". 1044: $Apache::functionplotresponse::functionplotrulelabels{'end'}.")"); 1045: 1046: # We have a function that we can actually grade, go through the spline rules. 1047: foreach my $rule (@Apache::functionplotresponse::functionplotrules) { 1048: unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax)) { 1049: $ad='INCORRECT'; 1050: last; 1051: } 1052: } 1053: # If it's not wrong, it's correct 1054: unless ($ad) { $ad='EXACT_ANS' }; 1055: } 1056: &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules)); 1057: &addlog("Assigned award detail: $ad"); 1058: # Store for later to be assigned at end_functionplotresponse 1059: $Apache::functionplotresponse::awarddetail=$ad; 1060: } 1061: } 1062: 1063: 1064: sub end_functionplotresponse { 1065: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1066: &Apache::response::end_response; 1067: 1068: my $result; 1069: my $id=$Apache::inputtags::response[-1]; 1070: my $partid=$Apache::inputtags::part; 1071: my $internalid = $partid.'_'.$id; 1072: 1073: if ($target eq 'edit') { $result=&Apache::edit::end_table(); } 1074: if ($target eq 'grade' 1075: && &Apache::response::submitted() 1076: && $Apache::lonhomework::type eq 'exam') { 1077: 1078: &Apache::response::scored_response($partid,$id); 1079: 1080: } elsif ($target eq 'grade' 1081: && &Apache::response::submitted() 1082: && $Apache::lonhomework::type ne 'exam') { 1083: my ($response,%coords)=&get_answer_from_form_fields($internalid); 1084: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 1085: my %previous=&Apache::response::check_for_previous($response,$partid,$id); 1086: # 1087: # Assign grade 1088: # 1089: my $ad=$Apache::functionplotresponse::awarddetail; 1090: # 1091: # Store grading info 1092: # 1093: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad; 1094: &Apache::response::handle_previous(\%previous,$ad); 1095: } elsif ($target eq 'web') { 1096: undef @Apache::functionplotresponse::failedrules; 1097: } 1098: return $result; 1099: } 1100: 1101: sub end_functionplotelements { 1102: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1103: my $result=''; 1104: my $id=$Apache::inputtags::response[-1]; 1105: my $partid=$Apache::inputtags::part; 1106: my $internalid = $partid.'_'.$id; 1107: if ($target eq 'edit' ) { 1108: $result=&Apache::edit::end_table(); 1109: } elsif ($target eq 'web') { 1110: # Now is the time to render all of the stored splines 1111: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1112: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1113: $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax); 1114: } 1115: # close the init script 1116: $result.=&end_init_script(); 1117: # register all splines in this response 1118: $result.='<input type="hidden" name="HWVAL_AllSplines_'.$internalid.'" value="'. 1119: join(',',keys(%Apache::functionplotresponse::splineorder)).'" />'."\n"; 1120: foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { 1121: $result.='<input type="hidden" name="HWVAL_SplineOrder_'.$internalid.'_'.$label.'" value="'. 1122: $Apache::functionplotresponse::splineorder{$label}.'" />'."\n"; 1123: } 1124: # generate the input fields 1125: $result.=$Apache::functionplotresponse::inputfields; 1126: # actually start the <applet>-tag 1127: $result.=&geogebra_startcode($internalid); 1128: # load the spline bytecode 1129: $result.=&geogebra_spline_program(); 1130: # set default parameters 1131: $result.=&geogebra_default_parameters($internalid); 1132: # close the <applet>-tag 1133: $result.=&geogebra_endcode(); 1134: } 1135: return $result; 1136: } 1137: 1138: sub boundaries { 1139: my ($parstack,$safeeval,$level)=@_; 1140: my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level); 1141: $xmin=(defined($xmin)?$xmin:-10); 1142: my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level); 1143: $xmax=(defined($xmax)?$xmax:10); 1144: my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level); 1145: $ymin=(defined($ymin)?$ymin:-10); 1146: my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level); 1147: $ymax=(defined($ymax)?$ymax:10); 1148: if ($xmax<=$xmin) { 1149: $xmax=$xmin+20; 1150: } 1151: if ($ymax<=$ymin) { 1152: $ymax=$ymin+20; 1153: } 1154: return ($xmin,$xmax,$ymin,$ymax); 1155: } 1156: 1157: sub start_functionplotelements { 1158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1159: my $result=''; 1160: my $id=$Apache::inputtags::response[-1]; 1161: my $partid=$Apache::inputtags::part; 1162: my $internalid = $partid.'_'.$id; 1163: 1164: if ($target eq 'edit') { 1165: return &Apache::edit::start_table($token). 1166: '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>' 1167: .'<td><span class="LC_nobreak">'.&mt('Delete?').' ' 1168: .&Apache::edit::deletelist($target,$token).'   '. 1169: &Apache::edit::insertlist($target,$token) 1170: .'</span></td>' 1171: ."<td> " 1172: .&Apache::edit::end_row() 1173: .&Apache::edit::start_spanning_row() 1174: ."\n"; 1175: } elsif ($target eq 'web') { 1176: my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2); 1177: my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1178: my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1179: my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false'); 1180: my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2); 1181: my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2); 1182: 1183: 1184: # paste in the update routine to receive stuff back from the applet 1185: $result.=&update_script($internalid); 1186: # start the initscript for this applet 1187: $result.=&start_init_script($internalid); 1188: # put the axis commands inside 1189: $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); 1190: $result.=&axes_label($internalid,$xlabel,$ylabel); 1191: # init script is left open 1192: } 1193: return $result; 1194: } 1195: 1196: 1; 1197: 1198: __END__ 1199: 1200: =head1 NAME 1201: 1202: Apache::functionplotresponse.pm; 1203: 1204: =head1 SYNOPSIS 1205: 1206: Handles tags associated with accepting function plots. 1207: 1208: This is part of the LearningOnline Network with CAPA project 1209: described at http://www.lon-capa.org. 1210: 1211: =head1 HANDLER SUBROUTINE 1212: 1213: start_functionplotresponse() 1214: 1215: =head1 OTHER SUBROUTINES 1216: 1217: =over 1218: 1219: =item end_functionplotresponse() 1220: 1221: =back 1222: 1223: =cut