Annotation of loncom/homework/imageresponse.pm, revision 1.89
1.89 ! foxr 1: #
1.12 albertel 2: # The LearningOnline Network with CAPA
1.14 albertel 3: # image click response style
4: #
1.89 ! foxr 5: # $Id: imageresponse.pm,v 1.88 2007/09/25 23:58:32 albertel Exp $
1.14 albertel 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
1.25 www 29: #FIXME LATER assumes multiple possible submissions but only one is possible
30: #currently
1.3 albertel 31:
1.1 albertel 32: package Apache::imageresponse;
33: use strict;
1.51 albertel 34: use Image::Magick();
35: use Apache::randomlylabel();
36: use Apache::londefdef();
1.40 albertel 37: use Apache::Constants qw(:common :http);
1.51 albertel 38: use Apache::lonlocal;
1.65 albertel 39: use Apache::lonnet;
1.78 www 40: use lib '/home/httpd/lib/perl/';
41: use LONCAPA;
42:
1.1 albertel 43:
1.16 harris41 44: BEGIN {
1.36 albertel 45: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
1.1 albertel 46: }
47:
48: sub start_imageresponse {
1.36 albertel 49: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
50: my $result;
51: #when in a radiobutton response use these
1.43 albertel 52: &Apache::lonxml::register('Apache::imageresponse',
53: ('foilgroup','foil','text','image','rectangle',
54: 'polygon','conceptgroup'));
1.36 albertel 55: push (@Apache::lonxml::namespace,'imageresponse');
56: my $id = &Apache::response::start_response($parstack,$safeeval);
1.51 albertel 57: undef(%Apache::response::foilnames);
1.36 albertel 58: if ($target eq 'meta') {
59: $result=&Apache::response::meta_package_write('imageresponse');
1.37 albertel 60: } elsif ($target eq 'analyze') {
61: my $part_id="$Apache::inputtags::part.$id";
62: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
1.84 foxr 63: push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
64: 1);
1.88 albertel 65: } elsif ( $target eq 'edit' ) {
66: $result .= &Apache::edit::tag_start($target,$token).
67: &Apache::edit::text_arg('Max Number Of Shown Foils:',
68: 'max',$token,'4').
69: &Apache::edit::end_row().
70: &Apache::edit::start_spanning_row();
71: } elsif ( $target eq 'modified' ) {
72: my $constructtag=
73: &Apache::edit::get_new_args($token,$parstack,$safeeval,'max');
74: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.36 albertel 75: }
76: return $result;
1.1 albertel 77: }
78:
79: sub end_imageresponse {
1.30 albertel 80: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.74 albertel 81:
1.89 ! foxr 82: my $part_id = $Apache::inputtags::part;
! 83:
1.74 albertel 84: pop(@Apache::lonxml::namespace);
1.30 albertel 85: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
1.74 albertel 86:
1.30 albertel 87: my $result;
1.74 albertel 88: if ($target eq 'edit') {
89: $result=&Apache::edit::end_table();
1.77 albertel 90: } elsif ($target eq 'tex'
91: && $Apache::lonhomework::type eq 'exam') {
1.74 albertel 92: $result=&Apache::inputtags::exam_score_line($target);
93: }
94:
1.51 albertel 95: undef(%Apache::response::foilnames);
1.74 albertel 96:
97: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
98: $target eq 'tex' || $target eq 'analyze') {
1.89 ! foxr 99: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
! 100: $part_id);
! 101: if ($target eq 'analyze') {
! 102: &Apache::lonhomework::set_bubble_lines();
! 103: }
! 104:
1.74 albertel 105: }
106: &Apache::response::end_response();
107:
1.30 albertel 108: return $result;
1.1 albertel 109: }
110:
1.20 albertel 111: %Apache::response::foilgroup=();
1.1 albertel 112: sub start_foilgroup {
1.36 albertel 113: %Apache::response::foilgroup=();
114: $Apache::imageresponse::conceptgroup=0;
1.53 albertel 115: &Apache::response::pushrandomnumber();
1.36 albertel 116: return '';
1.1 albertel 117: }
118:
1.2 albertel 119: sub getfoilcounts {
1.36 albertel 120: my ($parstack,$safeeval)=@_;
1.12 albertel 121:
1.36 albertel 122: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
123: # +1 since instructors will count from 1
124: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
1.88 albertel 125: if (&Apache::response::showallfoils()) { $max=$count; }
1.36 albertel 126: return ($count,$max);
1.2 albertel 127: }
128:
129: sub whichfoils {
1.36 albertel 130: my ($max)=@_;
1.88 albertel 131: return if (!defined(@{ $Apache::response::foilgroup{'names'} }));
1.36 albertel 132: my @names = @{ $Apache::response::foilgroup{'names'} };
1.88 albertel 133: my @whichopt;
1.36 albertel 134: while ((($#whichopt+1) < $max) && ($#names > -1)) {
135: &Apache::lonxml::debug("Have $#whichopt max is $max");
136: my $aopt;
1.88 albertel 137: if (&Apache::response::showallfoils()) {
138: $aopt=0;
139: } else {
1.36 albertel 140: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1.88 albertel 141: }
1.36 albertel 142: &Apache::lonxml::debug("From $#names elms, picking $aopt");
143: $aopt=splice(@names,$aopt,1);
144: &Apache::lonxml::debug("Picked $aopt");
1.88 albertel 145: push(@whichopt,$aopt);
1.36 albertel 146: }
147: return @whichopt;
1.2 albertel 148: }
149:
1.40 albertel 150: sub prep_image {
1.42 albertel 151: my ($image,$mode,$name)=@_;
1.85 albertel 152:
153: my ($x,$y)= &get_submission($name);
154: &Apache::lonxml::debug("for $name drawing click at $x and $y");
1.82 albertel 155: &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
156: }
157:
158: sub draw_image {
159: my ($mode,$image,$x,$y,$areas) = @_;
160:
1.41 albertel 161: my $id=&Apache::loncommon::get_cgi_id();
1.82 albertel 162:
1.49 albertel 163: my (%x,$i);
1.78 www 164: $x{"cgi.$id.BGIMG"}=&escape($image);
1.82 albertel 165:
1.40 albertel 166: #draws 2 xs on the image at the clicked location
167: #one in white and then one in red on top of the one in white
1.82 albertel 168:
1.75 albertel 169: if (defined($x) && $x =~/\S/
170: && defined($y) && $y =~/\S/
1.82 albertel 171: && ($mode eq 'submission' || !&Apache::response::show_answer())
1.75 albertel 172: && $mode ne 'answeronly') {
1.40 albertel 173: my $length = 6;
174: my $width = 1;
175: my $extrawidth = 2;
1.48 albertel 176: my $xmin=($x-$length);
177: my $xmax=($x+$length);
178: my $ymin=($y-$length);
179: my $ymax=($y+$length);
180:
1.49 albertel 181: $x{"cgi.$id.OBJTYPE"}.='LINE:';
182: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 183: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 184: "FFFFFF",($width+$extrawidth)));
185: $x{"cgi.$id.OBJTYPE"}.='LINE:';
186: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 187: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 188: "FFFFFF",($width+$extrawidth)));
189: $x{"cgi.$id.OBJTYPE"}.='LINE:';
190: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 191: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 192: "FF0000",($width)));
193: $x{"cgi.$id.OBJTYPE"}.='LINE:';
194: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 195: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 196: "FF0000",($width)));
1.40 albertel 197: }
1.75 albertel 198: if ($mode eq 'answer' || $mode eq 'answeronly') {
1.42 albertel 199: my $width = 1;
200: my $extrawidth = 2;
1.82 albertel 201: foreach my $area (@{ $areas }) {
1.43 albertel 202: if ($area=~/^rectangle:/) {
1.49 albertel 203: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
204: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.43 albertel 205: my ($x1,$y1,$x2,$y2)=
206: ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.49 albertel 207: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
1.43 albertel 208: ($width+$extrawidth)));
1.49 albertel 209: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
210: $i=$x{"cgi.$id.OBJCOUNT"}++;
211: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
1.43 albertel 212: } elsif ($area=~/^polygon:(.*)/) {
1.49 albertel 213: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
214: $i=$x{"cgi.$id.OBJCOUNT"}++;
215: $x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
216: $x{"cgi.$id.OBJEXTRA$i"}=$1;
217: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
218: $i=$x{"cgi.$id.OBJCOUNT"}++;
219: $x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
220: $x{"cgi.$id.OBJEXTRA$i"}=$1;
1.43 albertel 221: }
1.42 albertel 222: }
223: }
1.41 albertel 224: &Apache::lonnet::appenv(%x);
225: return $id;
1.40 albertel 226: }
227:
1.2 albertel 228: sub displayfoils {
1.36 albertel 229: my ($target,@whichopt) = @_;
230: my $result ='';
231: my $temp=1;
1.82 albertel 232: my @images;
1.85 albertel 233: foreach my $name (@whichopt) {
1.36 albertel 234: $result.=$Apache::response::foilgroup{"$name.text"};
235: &Apache::lonxml::debug("Text is $result");
236: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
237: my $image=$Apache::response::foilgroup{"$name.image"};
238: &Apache::lonxml::debug("image is $image");
1.40 albertel 239: if ( $target eq 'web' && $image !~ /^http:/ ) {
1.47 albertel 240: $image=&clean_up_image($image);
1.82 albertel 241: }
242: push(@images,$image);
1.40 albertel 243: &Apache::lonxml::debug("image is $image");
1.36 albertel 244: if ( &Apache::response::show_answer() ) {
245: if ($target eq 'tex') {
246: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
247: } else {
1.42 albertel 248: my $token=&prep_image($image,'answer',$name);
1.40 albertel 249: $result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36 albertel 250: }
251: } else {
252: if ($target eq 'tex') {
253: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
254: } else {
1.85 albertel 255: my $respid=$Apache::inputtags::response['-1'];
256: my $token=&prep_image($image,'submission',$name);
1.87 albertel 257: my $input_id = "HWVAL_$respid:$temp";
258: my $id = $env{'form.request.prefix'}.$input_id;
1.85 albertel 259: $result.='<img onclick="image_response_click(\''.$id.'\',event);"
260: src="/adm/randomlabel.png?token='.$token.'"
1.87 albertel 261: id="'.$id.'_imageresponse"
1.85 albertel 262: />'.
263: '<br />'.
1.87 albertel 264: '<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
265: '<input type="hidden" name="'.$input_id.'" value="'.
1.85 albertel 266: join(':',&get_submission($name)).'" />';
1.36 albertel 267: }
268: }
269: $temp++;
270: }
1.82 albertel 271: if ($target eq 'web') {
272: &Apache::response::setup_prior_tries_hash(\&format_prior_response,
1.85 albertel 273: [\@images,\@whichopt]);
1.82 albertel 274: }
1.36 albertel 275: return $result;
1.47 albertel 276: }
277:
1.82 albertel 278: sub format_prior_response {
279: my ($mode,$answer,$other_data) = @_;
1.85 albertel 280:
281: my $result;
1.82 albertel 282:
1.85 albertel 283: # make a copy of the data in the refs
284: my @images = @{ $other_data->[0] };
285: my @foils = @{ $other_data->[1] };
286: foreach my $name (@foils) {
287: my $image = pop(@images);
288: my ($x,$y) = &get_submission($name,$answer);
289: my $token = &draw_image('submission',$image,$x,$y);
290: $result .=
291: '<img class="LC_prior_image"
292: src="/adm/randomlabel.png?token='.$token.'" /><br />';
293: }
294: return $result;
1.82 albertel 295: }
296:
1.75 albertel 297: sub display_answers {
298: my ($target,$whichopt)=@_;
299:
1.88 albertel 300: my $result=&Apache::response::answer_header('imageresponse');
1.75 albertel 301: foreach my $name (@$whichopt) {
302: my $image=$Apache::response::foilgroup{"$name.image"};
303: &Apache::lonxml::debug("image is $image");
304: if ( $target eq 'web' && $image !~ /^http:/ ) {
305: $image = &clean_up_image($image);
306: }
307: my $token=&prep_image($image,'answeronly',$name);
308:
309: $result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
310: }
1.88 albertel 311: $result.=&Apache::response::answer_footer('imageresponse');
1.75 albertel 312: return $result;
313: }
314:
1.47 albertel 315: sub clean_up_image {
316: my ($image)=@_;
317: if ($image =~ /\s*<img\s*/) {
1.50 albertel 318: ($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
1.47 albertel 319: if ($image !~ /^http:/) {
320: $image=&Apache::lonnet::hreflocation('',$image);
321: }
322: if (!$image) {
323: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
324: }
325: } else {
326: $image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
1.66 foxr 327: &Apache::lonxml::debug("repcopying: $image");
1.64 raeburn 328: if (&Apache::lonnet::repcopy($image) ne 'ok') {
1.47 albertel 329: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
330: }
331: }
332: return $image;
1.2 albertel 333: }
334:
1.3 albertel 335: sub gradefoils {
1.36 albertel 336: my (@whichopt) = @_;
1.74 albertel 337:
338: my $partid = $Apache::inputtags::part;
339: my $id = $Apache::inputtags::response['-1'];
340:
341: if ($Apache::lonhomework::type eq 'exam') {
342: &Apache::response::scored_response($partid,$id);
343: return;
344: }
345:
1.85 albertel 346: my @results;
1.36 albertel 347: my $temp=1;
1.85 albertel 348: my %response;
1.36 albertel 349: foreach my $name (@whichopt) {
1.85 albertel 350: my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
351: $response{$name} = $env{"form.HWVAL_$id:$temp"};
1.36 albertel 352: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
353: if (defined($x) && defined($y) &&
354: defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
355: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
356: my $grade="INCORRECT";
357: foreach my $area (@areas) {
358: &Apache::lonxml::debug("Area is $area for $name");
359: $area =~ m/([a-z]*):/;
360: &Apache::lonxml::debug("Area of type $1");
361: if ($1 eq 'rectangle') {
362: $grade=&grade_rectangle($area,$x,$y);
1.43 albertel 363: } elsif ($1 eq 'polygon') {
364: $grade=&grade_polygon($area,$x,$y);
1.36 albertel 365: } else {
366: &Apache::lonxml::error("Unknown area style $area");
367: }
368: &Apache::lonxml::debug("Area said $grade");
369: if ($grade eq 'APPROX_ANS') { last; }
370: }
371: &Apache::lonxml::debug("Foil was $grade");
1.85 albertel 372: push(@results, $grade)
373: } else {
374: push(@results, 'MISSING_ANSWER')
1.9 albertel 375: }
1.85 albertel 376: $temp++;
1.36 albertel 377: }
1.85 albertel 378: my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
379: &Apache::lonxml::debug("Question is $result");
380:
1.60 albertel 381: my $part=$Apache::inputtags::part;
1.85 albertel 382: my %previous=
383: &Apache::response::check_for_previous(&stringify_submission(\%response),
384: $part,$id);
1.56 albertel 385: if ($result
386: && $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
1.60 albertel 387: &Apache::response::handle_previous(\%previous,$result);
1.85 albertel 388: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
389: &stringify_submission(\%response);
1.60 albertel 390: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
1.74 albertel 391: return;
1.3 albertel 392: }
393:
1.85 albertel 394: sub stringify_submission {
395: my ($response) = @_;
1.86 albertel 396: return &Apache::lonnet::hash2str(%{ $response });
397:
1.85 albertel 398:
399: }
400:
401: sub get_submission {
402: my ($name,$string) = @_;
403:
404: if (!defined($string)) {
405: my $part=$Apache::inputtags::part;
406: my $respid=$Apache::inputtags::response['-1'];
407: $string =
408: $Apache::lonhomework::history{"resource.$part.$respid.submission"};
409: }
410:
1.86 albertel 411: if ($string !~ /=/) {
1.85 albertel 412: return split(':',$string);
413: } else {
1.86 albertel 414: my %response = &Apache::lonnet::str2hash($string);
1.85 albertel 415: return split(':',$response{$name});
416: }
417: }
418:
1.1 albertel 419: sub end_foilgroup {
1.36 albertel 420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
421: my $result='';
422: my @whichopt;
1.75 albertel 423:
1.38 albertel 424: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 425: $target eq 'analyze' || $target eq 'answer') {
426:
1.36 albertel 427: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
428: if ($count>$max) { $count=$max }
429: &Apache::lonxml::debug("Count is $count from $max");
1.75 albertel 430:
1.36 albertel 431: @whichopt = &whichfoils($max);
1.75 albertel 432:
1.36 albertel 433: if ($target eq 'web' || $target eq 'tex') {
434: $result=&displayfoils($target,@whichopt);
1.81 albertel 435: $Apache::lonxml::post_evaluate=0;
1.36 albertel 436: } elsif ($target eq 'grade') {
1.65 albertel 437: if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
1.37 albertel 438: } elsif ( $target eq 'analyze') {
439: &Apache::response::analyze_store_foilgroup(\@whichopt,
440: ['text','image','area']);
1.76 albertel 441: } elsif ($target eq 'answer'
442: && $env{'form.answer_output_mode'} ne 'tex') {
1.75 albertel 443: $result=&display_answers($target,\@whichopt);
1.37 albertel 444: }
1.75 albertel 445:
1.36 albertel 446: } elsif ($target eq 'edit') {
447: $result=&Apache::edit::end_table();
448: }
1.53 albertel 449: &Apache::response::poprandomnumber();
1.36 albertel 450: return $result;
1.1 albertel 451: }
452:
453: sub start_conceptgroup {
1.36 albertel 454: $Apache::imageresponse::conceptgroup=1;
455: %Apache::response::conceptgroup=();
456: return '';
1.1 albertel 457: }
458:
459: sub end_conceptgroup {
1.36 albertel 460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
461: $Apache::imageresponse::conceptgroup=0;
462: my $result;
1.37 albertel 463: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
464: $target eq 'analyze') {
465: &Apache::response::pick_foil_for_concept($target,
466: ['area','text','image'],
467: \%Apache::hint::image,
468: $parstack,$safeeval);
1.36 albertel 469: } elsif ($target eq 'edit') {
470: $result=&Apache::edit::end_table();
471: }
472: return $result;
1.31 albertel 473: }
474:
475: sub insert_foil {
476: return '
477: <foil>
478: <image></image>
479: <text></text>
480: <rectangle></rectangle>
481: </foil>
482: ';
1.1 albertel 483: }
484:
1.12 albertel 485: $Apache::imageresponse::curname='';
1.1 albertel 486: sub start_foil {
1.36 albertel 487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.67 albertel 488: my $result;
1.37 albertel 489: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 490: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 491: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.72 albertel 492: if ($name eq "") {
1.71 albertel 493: &Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
1.59 albertel 494: $name=$Apache::lonxml::curdepth;
495: }
1.51 albertel 496: if (defined($Apache::response::foilnames{$name})) {
497: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
498: }
1.52 albertel 499: $Apache::response::foilnames{$name}++;
1.36 albertel 500: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 501: && !&Apache::response::showallfoils()
1.56 albertel 502: ) {
1.36 albertel 503: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
504: } else {
505: push(@{ $Apache::response::foilgroup{'names'} }, $name);
506: }
507: $Apache::imageresponse::curname=$name;
1.67 albertel 508: } elsif ($target eq 'edit') {
509: $result = &Apache::edit::tag_start($target,$token);
510: $result .= &Apache::edit::text_arg('Name:','name',$token);
511: $result .= &Apache::edit::end_row().
512: &Apache::edit::start_spanning_row();
513: } elsif ($target eq 'modified') {
514: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
515: $safeeval,'name');
516: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
517: }
518: return $result;;
1.1 albertel 519: }
520:
521: sub end_foil {
1.26 albertel 522: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
523: my $result;
524: if ($target eq 'edit') {
525: $result=&Apache::edit::end_table();
526: }
527: return $result;
1.1 albertel 528: }
529:
530: sub start_text {
1.36 albertel 531: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
532: my $result='';
1.75 albertel 533: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
534: || $target eq 'answer') {
1.36 albertel 535: &Apache::lonxml::startredirection;
536: } elsif ($target eq 'edit') {
1.73 albertel 537: my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
1.36 albertel 538: $result=&Apache::edit::tag_start($target,$token,'Task Description').
539: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
540: &Apache::edit::end_row();
541: } elsif ($target eq "modified") {
1.39 albertel 542: $result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
1.36 albertel 543: }
544: return $result;
1.1 albertel 545: }
546:
547: sub end_text {
1.36 albertel 548: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
549: my $result;
1.75 albertel 550: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
551: || $target eq 'answer') {
1.36 albertel 552: my $name = $Apache::imageresponse::curname;
553: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 554: && !&Apache::response::showallfoils()
1.56 albertel 555: ) {
1.36 albertel 556: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
557: } else {
558: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
559: }
560: } elsif ($target eq 'edit') {
561: $result=&Apache::edit::end_table();
562: }
563: return $result;
1.1 albertel 564: }
565:
566: sub start_image {
1.36 albertel 567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
568: my $result='';
1.83 banghart 569: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
1.75 albertel 570: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
571: || $target eq 'answer') {
1.36 albertel 572: &Apache::lonxml::startredirection;
573: } elsif ($target eq 'edit') {
1.73 albertel 574: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
1.36 albertel 575: $Apache::edit::bgimgsrc=$bgimg;
576: $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
577:
578: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
579: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
1.83 banghart 580: $result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
1.36 albertel 581: $result.=&Apache::edit::search(undef,'textnode').
582: &Apache::edit::end_row();
583: } elsif ($target eq "modified") {
1.39 albertel 584: $result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
1.36 albertel 585: }
586: return $result;
1.1 albertel 587: }
588:
589: sub end_image {
1.36 albertel 590: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
591: my $result;
592: my $name = $Apache::imageresponse::curname;
1.75 albertel 593: if ($target eq 'web' || $target eq 'answer') {
1.62 albertel 594: my $image = &Apache::lonxml::endredirection();
1.36 albertel 595: &Apache::lonxml::debug("original image is $image");
1.37 albertel 596: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 597: && !&Apache::response::showallfoils()
1.56 albertel 598: ) {
1.37 albertel 599: $Apache::response::conceptgroup{"$name.image"} = $image;
600: } else {
601: $Apache::response::foilgroup{"$name.image"} = $image;
602: }
603: } elsif ($target eq 'analyze') {
1.62 albertel 604: my $image = &Apache::lonxml::endredirection();
1.36 albertel 605: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 606: && !&Apache::response::showallfoils()
1.56 albertel 607: ) {
1.36 albertel 608: $Apache::response::conceptgroup{"$name.image"} = $image;
609: } else {
610: $Apache::response::foilgroup{"$name.image"} = $image;
611: }
612: } elsif ($target eq 'edit') {
613: $result=&Apache::edit::end_table();
614: } elsif ($target eq 'tex') {
1.62 albertel 615: my $src = &Apache::lonxml::endredirection();
1.68 foxr 616:
617: # There may be all sorts of whitespace on fore and aft:
618:
1.69 foxr 619: $src =~ s/\s+$//s;
620: $src =~ s/^\s+//s;
1.68 foxr 621:
622: #
623: # Gnuplot e.g. just generates the latex to put inplace.
624: #
625: my $graphinclude;
1.70 foxr 626: if ($src =~ /^%DYNAMICIMAGE/) {
627: # This is needed because the newline is not always passed -> tex.
628: # At present we don't care about the sizing info.
629:
630: my ($commentline, $restofstuff) = split(/\n/, $src);
1.68 foxr 631: $graphinclude = $src;
1.70 foxr 632: $graphinclude =~ s/^$commentline//;
1.68 foxr 633: } else {
634: my ($path,$file) = &Apache::londefdef::get_eps_image($src);
635: my ($height_param,$width_param)=
636: &Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
637: $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
638: }
639: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
1.36 albertel 640: }
641: return $result;
1.1 albertel 642: }
643:
644: sub start_rectangle {
1.36 albertel 645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
646: my $result='';
1.38 albertel 647: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 648: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 649: &Apache::lonxml::startredirection;
650: } elsif ($target eq 'edit') {
1.73 albertel 651: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
1.36 albertel 652: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
653: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
1.44 albertel 654: &Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
1.36 albertel 655: &Apache::edit::end_row();
656: } elsif ($target eq "modified") {
1.44 albertel 657: &Apache::edit::deletecoorddata();
1.39 albertel 658: $result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
1.36 albertel 659: }
660: return $result;
1.1 albertel 661: }
662:
1.3 albertel 663: sub grade_rectangle {
1.36 albertel 664: my ($spec,$x,$y) = @_;
665: &Apache::lonxml::debug("Spec is $spec");
1.43 albertel 666: my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.36 albertel 667: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
668: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
669: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
670: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
671: return 'APPROX_ANS';
672: }
673: return 'INCORRECT';
1.3 albertel 674: }
675:
1.1 albertel 676: sub end_rectangle {
1.36 albertel 677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
678: my $result;
1.38 albertel 679: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 680: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 681: my $name = $Apache::imageresponse::curname;
682: my $area = &Apache::lonxml::endredirection;
1.54 albertel 683: $area=~s/\s//g;
1.36 albertel 684: &Apache::lonxml::debug("out is $area for $name");
685: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 686: && !&Apache::response::showallfoils()
1.56 albertel 687: ) {
1.36 albertel 688: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
689: } else {
690: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
1.43 albertel 691: }
692: } elsif ($target eq 'edit') {
693: $result=&Apache::edit::end_table();
694: }
695: return $result;
696: }
697:
698: sub start_polygon {
699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
700: my $result='';
701: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 702: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 703: &Apache::lonxml::startredirection;
704: } elsif ($target eq 'edit') {
1.73 albertel 705: my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
1.43 albertel 706: $result=&Apache::edit::tag_start($target,$token,'Polygon').
707: &Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
1.44 albertel 708: &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
1.43 albertel 709: &Apache::edit::end_row();
710: } elsif ($target eq "modified") {
711: $result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
712: }
713: return $result;
714: }
715:
716: sub grade_polygon {
717: my ($spec,$x,$y) = @_;
718: &Apache::lonxml::debug("Spec is $spec");
719: $spec=~s/^polygon://;
720: my @polygon;
721: foreach my $coord (split('-',$spec)) {
722: my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
723: &Apache::lonxml::debug("x $x y $y");
724: push @polygon, {'x'=>$x,'y'=>$y};
725: }
726: #make end point start point
727: push @polygon, $polygon[0];
728: # cribbed from
729: # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
730: my $crossing = 0; # the crossing number counter
731:
732: # loop through all edges of the polygon
733: for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1]
734: if ((($polygon[$i]->{'y'} <= $y)
735: && ($polygon[$i+1]->{'y'} > $y)) # an upward crossing
736: ||
737: (($polygon[$i]->{'y'} > $y)
738: && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
739: # compute the actual edge-ray intersect x-coordinate
740: my $vt = ($y - $polygon[$i]->{'y'})
741: / ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
742: if ($x < $polygon[$i]->{'x'} + $vt *
743: ($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
744: $crossing++; # a valid crossing of y=P.y right of P.x
745: }
746: }
747: }
748:
749: # 0 if even (out), and 1 if odd (in)
750: if ($crossing%2) {
751: return 'APPROX_ANS';
752: } else {
753: return 'INCORRECT';
754: }
755: }
756:
757: sub end_polygon {
758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
759: my $result;
760: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 761: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 762: my $name = $Apache::imageresponse::curname;
763: my $area = &Apache::lonxml::endredirection;
1.48 albertel 764: $area=~s/\s*//g;
1.43 albertel 765: &Apache::lonxml::debug("out is $area for $name");
766: if ( $Apache::imageresponse::conceptgroup
1.88 albertel 767: && !&Apache::response::showallfoils()
1.56 albertel 768: ) {
1.43 albertel 769: push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
770: } else {
771: push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
1.36 albertel 772: }
773: } elsif ($target eq 'edit') {
774: $result=&Apache::edit::end_table();
775: }
776: return $result;
1.1 albertel 777: }
778: 1;
779: __END__
780:
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