File:
[LON-CAPA] /
loncom /
homework /
imageresponse.pm
Revision
1.105:
download - view:
text,
annotated -
select for diffs
Tue Apr 30 03:03:34 2013 UTC (11 years ago) by
raeburn
Branches:
MAIN
CVS tags:
version_2_11_X,
version_2_11_4_uiuc,
version_2_11_4_msu,
version_2_11_4,
version_2_11_3_uiuc,
version_2_11_3_msu,
version_2_11_3,
version_2_11_2_uiuc,
version_2_11_2_msu,
version_2_11_2_educog,
version_2_11_2,
version_2_11_1,
version_2_11_0_RC3,
version_2_11_0_RC2,
version_2_11_0_RC1,
version_2_11_0,
HEAD
- Can view own submissions in anonymous surveys.
1: #
2: # The LearningOnline Network with CAPA
3: # image click response style
4: #
5: # $Id: imageresponse.pm,v 1.105 2013/04/30 03:03:34 raeburn Exp $
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: #
29: #FIXME LATER assumes multiple possible submissions but only one is possible
30: #currently
31:
32:
33: =head1 NAME
34:
35: Apache::imageresponse
36:
37: =head1 SYNOPSIS
38:
39: Coordinates the response to clicking an image.
40:
41: This is part of the LearningOnline Network with CAPA project
42: described at http://www.lon-capa.org.
43:
44: =head1 SUBROUTINES
45:
46: =over
47:
48: =item start_imageresponse()
49:
50: =item end_imageresponse()
51:
52: =item start_foilgroup()
53:
54: =item getfoilcounts()
55:
56: =item whichfoils()
57:
58: =item prep_image()
59:
60: =item draw_image()
61:
62: =item displayfoils()
63:
64: =item format_prior_response()
65:
66: =item display_answers()
67:
68: =item clean_up_image()
69:
70: =item gradefoils()
71:
72: =item stringify_submission()
73:
74: =item get_submission()
75:
76: =item end_foilgroup()
77:
78: =item start_conceptgroup()
79:
80: =item end_conceptgroup()
81:
82: =item insert_foil()
83:
84: =item start_foil()
85:
86: =item end_foil()
87:
88: =item start_text()
89:
90: =item end_text()
91:
92: =item start_image()
93:
94: =item end_image()
95:
96: =item start_rectangle()
97:
98: =item grade_rectangle()
99:
100: =item end_rectangle()
101:
102: =item start_polygon()
103:
104: =item grade_polygon()
105:
106: =item end_polygon()
107:
108: =back
109:
110: =cut
111:
112:
113: package Apache::imageresponse;
114: use strict;
115: use Image::Magick();
116: use Apache::randomlylabel();
117: use Apache::londefdef();
118: use Apache::Constants qw(:common :http);
119: use Apache::lonlocal;
120: use Apache::lonnet;
121: use lib '/home/httpd/lib/perl/';
122: use LONCAPA;
123:
124:
125: BEGIN {
126: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
127: }
128:
129: sub start_imageresponse {
130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
131: my $result;
132: #when in a radiobutton response use these
133: &Apache::lonxml::register('Apache::imageresponse',
134: ('foilgroup','foil','text','image','rectangle',
135: 'polygon','conceptgroup'));
136: push (@Apache::lonxml::namespace,'imageresponse');
137: my $id = &Apache::response::start_response($parstack,$safeeval);
138: undef(%Apache::response::foilnames);
139: if ($target eq 'meta') {
140: $result=&Apache::response::meta_package_write('imageresponse');
141: } elsif ($target eq 'analyze') {
142: my $part_id="$Apache::inputtags::part.$id";
143: $Apache::lonhomework::analyze{"$part_id.type"} = 'imageresponse';
144: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
145: push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
146: 1);
147: } elsif ( $target eq 'edit' ) {
148: $result .= &Apache::edit::tag_start($target,$token).
149: &Apache::edit::text_arg('Max Number Of Shown Foils:',
150: 'max',$token,'4').
151: &Apache::edit::end_row().
152: &Apache::edit::start_spanning_row();
153: } elsif ( $target eq 'modified' ) {
154: my $constructtag=
155: &Apache::edit::get_new_args($token,$parstack,$safeeval,'max');
156: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
157: }
158: return $result;
159: }
160:
161: sub end_imageresponse {
162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
163:
164: my $part_id = $Apache::inputtags::part;
165: my $response_id = $Apache::inputtags::response[-1];
166:
167: pop(@Apache::lonxml::namespace);
168: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
169:
170: my $result;
171: if ($target eq 'edit') {
172: $result=&Apache::edit::end_table();
173: } elsif ($target eq 'tex'
174: && $Apache::lonhomework::type eq 'exam') {
175: $result=&Apache::inputtags::exam_score_line($target);
176: }
177:
178: undef(%Apache::response::foilnames);
179:
180: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
181: $target eq 'tex' || $target eq 'analyze') {
182: my $repetition = &Apache::response::repetition();
183: &Apache::lonxml::increment_counter($repetition,
184: "$part_id.$response_id");
185: if ($target eq 'analyze') {
186: &Apache::lonhomework::set_bubble_lines();
187: }
188:
189: }
190: &Apache::response::end_response();
191: return $result;
192: }
193:
194: %Apache::response::foilgroup=();
195: sub start_foilgroup {
196: my ($target) = @_;
197: %Apache::response::foilgroup=();
198: $Apache::imageresponse::conceptgroup=0;
199: &Apache::response::pushrandomnumber(undef,$target);
200: return '';
201: }
202:
203: sub getfoilcounts {
204: my ($parstack,$safeeval)=@_;
205:
206: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
207: # +1 since instructors will count from 1
208: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
209: if (&Apache::response::showallfoils()) { $max=$count; }
210: return ($count,$max);
211: }
212:
213: sub whichfoils {
214: my ($max)=@_;
215: my @names;
216: if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
217: @names = @{ $Apache::response::foilgroup{'names'} };
218: }
219: return if (!@names);
220: my @whichopt;
221: while ((($#whichopt+1) < $max) && ($#names > -1)) {
222: &Apache::lonxml::debug("Have $#whichopt max is $max");
223: my $aopt;
224: if (&Apache::response::showallfoils()) {
225: $aopt=0;
226: } else {
227: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
228: }
229: &Apache::lonxml::debug("From $#names elms, picking $aopt");
230: $aopt=splice(@names,$aopt,1);
231: &Apache::lonxml::debug("Picked $aopt");
232: push(@whichopt,$aopt);
233: }
234: return @whichopt;
235: }
236:
237: sub prep_image {
238: my ($image,$mode,$name)=@_;
239:
240: my ($x,$y)= &get_submission($name);
241: &Apache::lonxml::debug("for $name drawing click at $x and $y");
242: &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
243: }
244:
245: sub draw_image {
246: my ($mode,$image,$x,$y,$areas) = @_;
247:
248: my $id=&Apache::loncommon::get_cgi_id();
249:
250: my (%x,$i);
251: $x{"cgi.$id.BGIMG"}=&escape($image);
252:
253: #draws 2 xs on the image at the clicked location
254: #one in white and then one in red on top of the one in white
255:
256: if (defined($x) && $x =~/\S/
257: && defined($y) && $y =~/\S/
258: && ($mode eq 'submission' || !&Apache::response::show_answer())
259: && $mode ne 'answeronly') {
260: my $length = 6;
261: my $width = 1;
262: my $extrawidth = 2;
263: my $xmin=($x-$length);
264: my $xmax=($x+$length);
265: my $ymin=($y-$length);
266: my $ymax=($y+$length);
267:
268: $x{"cgi.$id.OBJTYPE"}.='LINE:';
269: $i=$x{"cgi.$id.OBJCOUNT"}++;
270: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
271: "FFFFFF",($width+$extrawidth)));
272: $x{"cgi.$id.OBJTYPE"}.='LINE:';
273: $i=$x{"cgi.$id.OBJCOUNT"}++;
274: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
275: "FFFFFF",($width+$extrawidth)));
276: $x{"cgi.$id.OBJTYPE"}.='LINE:';
277: $i=$x{"cgi.$id.OBJCOUNT"}++;
278: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
279: "FF0000",($width)));
280: $x{"cgi.$id.OBJTYPE"}.='LINE:';
281: $i=$x{"cgi.$id.OBJCOUNT"}++;
282: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
283: "FF0000",($width)));
284: }
285: if ($mode eq 'answer' || $mode eq 'answeronly') {
286: my $width = 1;
287: my $extrawidth = 2;
288: foreach my $area (@{ $areas }) {
289: if ($area=~/^rectangle:/) {
290: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
291: $i=$x{"cgi.$id.OBJCOUNT"}++;
292: my ($x1,$y1,$x2,$y2)=
293: ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
294: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
295: ($width+$extrawidth)));
296: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
297: $i=$x{"cgi.$id.OBJCOUNT"}++;
298: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
299: } elsif ($area=~/^polygon:(.*)/) {
300: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
301: $i=$x{"cgi.$id.OBJCOUNT"}++;
302: $x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
303: $x{"cgi.$id.OBJEXTRA$i"}=$1;
304: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
305: $i=$x{"cgi.$id.OBJCOUNT"}++;
306: $x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
307: $x{"cgi.$id.OBJEXTRA$i"}=$1;
308: }
309: }
310: }
311: &Apache::lonnet::appenv(\%x);
312: return $id;
313: }
314:
315: sub displayfoils {
316: my ($target,@whichopt) = @_;
317: my $result ='';
318: my $temp=1;
319: my @images;
320: foreach my $name (@whichopt) {
321: $result.=$Apache::response::foilgroup{"$name.text"};
322: &Apache::lonxml::debug("Text is $result");
323: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
324: my $image=$Apache::response::foilgroup{"$name.image"};
325: &Apache::lonxml::debug("image is $image");
326: if ( ($target eq 'web' || $target eq 'answer')
327: && $image !~ /^https?\:/ ) {
328: $image=&clean_up_image($image);
329: }
330: push(@images,$image);
331: &Apache::lonxml::debug("image is $image");
332: if ( &Apache::response::show_answer() ) {
333: if ($target eq 'tex') {
334: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
335: } else {
336: my $token=&prep_image($image,'answer',$name);
337: $result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
338: }
339: } else {
340: if ($target eq 'tex') {
341: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
342: } else {
343: my $respid=$Apache::inputtags::response['-1'];
344: my $token=&prep_image($image,'submission',$name);
345: my $input_id = "HWVAL_$respid:$temp";
346: my $id = $env{'form.request.prefix'}.$input_id;
347: $result.='<img onclick="image_response_click(\''.$id.'\',event);"
348: src="/adm/randomlabel.png?token='.$token.'"
349: id="'.$id.'_imageresponse"
350: />'.
351: '<br />'.
352: '<input type="hidden" name="'.$input_id.'_token" value="'.$token.'" />'.
353: '<input type="hidden" name="'.$input_id.'" value="'.
354: join(':',&get_submission($name)).'" />';
355: }
356: }
357: $temp++;
358: }
359: if ($target eq 'web') {
360: &get_prior_options(\@images,\@whichopt);
361: }
362: return $result;
363: }
364:
365: sub get_prior_options {
366: my ($currimages,$curropt) = @_;
367: return unless((ref($curropt) eq 'ARRAY') &&
368: (ref($currimages) eq 'ARRAY'));
369: my $part = $Apache::inputtags::part;
370: my $respid = $Apache::inputtags::response[-1];
371: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
372: my $partprefix = "$i:resource.$part";
373: my $sub_key = "$partprefix.$respid.submission";
374: next if (!exists($Apache::lonhomework::history{$sub_key}));
375: my $type_key = "$partprefix.type";
376: my @whichopt = ();
377: my @images = ();
378: if ($Apache::lonhomework::history{$type_key} eq 'randomizetry') {
379: my $order_key = "$partprefix.$respid.foilorder";
380: @whichopt = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
381: if (@whichopt > 0) {
382: foreach my $name (@whichopt) {
383: my $image=$Apache::response::foilgroup{"$name.image"};
384: if ($image !~ /^https?\:/ ) {
385: $image=&clean_up_image($image);
386: }
387: push(@images,$image);
388: }
389: }
390: } else {
391: @whichopt = @{$curropt};
392: @images = @{$currimages};
393: }
394: my $submission;
395: if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
396: (($env{'form.grade_username'} eq $env{'user.name'}) &&
397: ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
398: $submission = $Apache::lonhomework::history{$sub_key};
399: } else {
400: unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
401: ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
402: $submission = $Apache::lonhomework::history{$sub_key};
403: }
404: }
405: my $output = &format_prior_response('grade',$submission,
406: [\@images,\@whichopt]);
407: if (defined($output)) {
408: $Apache::inputtags::submission_display{$sub_key} = $output;
409: }
410: }
411: }
412:
413: sub format_prior_response {
414: my ($mode,$answer,$other_data) = @_;
415:
416: my $result;
417:
418: # make a copy of the data in the refs
419: my @images = @{ $other_data->[0] };
420: my @foils = @{ $other_data->[1] };
421: foreach my $name (@foils) {
422: my $image = pop(@images);
423: my ($x,$y) = &get_submission($name,$answer);
424: my $token = &draw_image('submission',$image,$x,$y);
425: $result .=
426: '<img class="LC_prior_image"
427: src="/adm/randomlabel.png?token='.$token.'" /><br />';
428: }
429: return $result;
430: }
431:
432: sub display_answers {
433: my ($target,$whichopt)=@_;
434:
435: my $result=&Apache::response::answer_header('imageresponse');
436: foreach my $name (@$whichopt) {
437: my $image=$Apache::response::foilgroup{"$name.image"};
438: &Apache::lonxml::debug("image is $image");
439: if ( ($target eq 'web' || $target eq 'answer')
440: && $image !~ /^https?\:/ ) {
441: $image = &clean_up_image($image);
442: }
443: my $token=&prep_image($image,'answeronly',$name);
444:
445: $result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
446: }
447: $result.=&Apache::response::answer_footer('imageresponse');
448: return $result;
449: }
450:
451: sub clean_up_image {
452: my ($image)=@_;
453: if ($image =~ /\s*<img\s*/) {
454: ($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
455: if ($image !~ /^https?\:/) {
456: $image=&Apache::lonnet::hreflocation('',$image);
457: }
458: if (!$image) {
459: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
460: }
461: } else {
462: $image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
463: &Apache::lonxml::debug("repcopying: $image");
464: if (&Apache::lonnet::repcopy($image) ne 'ok') {
465: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
466: }
467: }
468: return $image;
469: }
470:
471: sub gradefoils {
472: my (@whichopt) = @_;
473:
474: my $partid = $Apache::inputtags::part;
475: my $id = $Apache::inputtags::response['-1'];
476:
477: if ($Apache::lonhomework::type eq 'exam') {
478: &Apache::response::scored_response($partid,$id);
479: return;
480: }
481:
482: my @results;
483: my $temp=1;
484: my %response;
485: foreach my $name (@whichopt) {
486: my ($x,$y) = split(':',$env{"form.HWVAL_$id:$temp"});
487: $response{$name} = $env{"form.HWVAL_$id:$temp"};
488: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
489: my @areas;
490: if (ref($Apache::response::foilgroup{"$name.area"}) eq 'ARRAY') {
491: @areas = @{ $Apache::response::foilgroup{"$name.area"} };
492: }
493: if (defined($x) && defined($y) && @areas) {
494: my $grade="INCORRECT";
495: foreach my $area (@areas) {
496: &Apache::lonxml::debug("Area is $area for $name");
497: $area =~ m/([a-z]*):/;
498: &Apache::lonxml::debug("Area of type $1");
499: if ($1 eq 'rectangle') {
500: $grade=&grade_rectangle($area,$x,$y);
501: } elsif ($1 eq 'polygon') {
502: $grade=&grade_polygon($area,$x,$y);
503: } else {
504: &Apache::lonxml::error(&mt('Unknown area style [_1]',$area));
505: }
506: &Apache::lonxml::debug("Area said $grade");
507: if ($grade eq 'APPROX_ANS') { last; }
508: }
509: &Apache::lonxml::debug("Foil was $grade");
510: push(@results, $grade)
511: } else {
512: push(@results, 'MISSING_ANSWER')
513: }
514: $temp++;
515: }
516: if ($Apache::lonhomework::type eq 'randomizetry') {
517: $Apache::lonhomework::results{"resource.$partid.$id.foilorder"} = &Apache::lonnet::array2str(@whichopt);
518: }
519: my ($result) = &Apache::inputtags::finalizeawards(\@results,[]);
520: &Apache::lonxml::debug("Question is $result");
521:
522: my $part=$Apache::inputtags::part;
523: my %previous=
524: &Apache::response::check_for_previous(&stringify_submission(\%response),
525: $part,$id);
526: if ($result) {
527: if ($Apache::lonhomework::type eq 'survey') {
528: $result='SUBMITTED';
529: } elsif ($Apache::lonhomework::type eq 'surveycred') {
530: $result='SUBMITTED_CREDIT';
531: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
532: $result='ANONYMOUS';
533: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
534: $result='ANONYMOUS_CREDIT';
535: }
536: }
537:
538: &Apache::response::handle_previous(\%previous,$result);
539: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
540: &stringify_submission(\%response);
541: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
542: return;
543: }
544:
545: sub stringify_submission {
546: my ($response) = @_;
547: return &Apache::lonnet::hash2str(%{ $response });
548: }
549:
550: sub get_submission {
551: my ($name,$string) = @_;
552:
553: if (!defined($string)) {
554: my $part=$Apache::inputtags::part;
555: my $respid=$Apache::inputtags::response['-1'];
556: my $newvariation;
557: if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
558: ($Apache::lonhomework::type eq 'randomizetry')) &&
559: ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
560: if ($env{'form.'.$part.'.rndseed'} ne
561: $Apache::lonhomework::history{"resource.$part.rndseed"}) {
562: $newvariation = 1;
563: }
564: }
565: unless ($newvariation) {
566: if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
567: (($env{'form.grade_username'} eq $env{'user.name'}) &&
568: ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
569: $string =
570: $Apache::lonhomework::history{"resource.$part.$respid.submission"};
571: } else {
572: unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
573: ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
574: $string =
575: $Apache::lonhomework::history{"resource.$part.$respid.submission"};
576: }
577: }
578: }
579: }
580:
581: if ($string !~ /=/) {
582: return split(':',$string);
583: } else {
584: my %response = &Apache::lonnet::str2hash($string);
585: return split(':',$response{$name});
586: }
587: }
588:
589: sub end_foilgroup {
590: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
591: my $result='';
592: my (@images,@whichopt);
593:
594: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
595: $target eq 'analyze' || $target eq 'answer') {
596:
597: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
598: if ($count>$max) { $count=$max }
599: &Apache::lonxml::debug("Count is $count from $max");
600:
601: @whichopt = &whichfoils($max);
602:
603: if ($target eq 'web' || $target eq 'tex') {
604: $result=&displayfoils($target,@whichopt);
605: if ($Apache::lonhomework::type eq 'randomizetry') {
606: if ($target eq 'web') {
607: &get_prior_options(\@images,\@whichopt);
608: }
609: }
610: $Apache::lonxml::post_evaluate=0;
611: } elsif ($target eq 'grade') {
612: if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
613: } elsif ( $target eq 'analyze') {
614: &Apache::response::analyze_store_foilgroup(\@whichopt,
615: ['text','image','area']);
616: } elsif ($target eq 'answer'
617: && $env{'form.answer_output_mode'} ne 'tex') {
618: $result=&display_answers($target,\@whichopt);
619: }
620:
621: } elsif ($target eq 'edit') {
622: $result=&Apache::edit::end_table();
623: }
624: &Apache::response::poprandomnumber();
625: return $result;
626: }
627:
628: sub start_conceptgroup {
629: $Apache::imageresponse::conceptgroup=1;
630: %Apache::response::conceptgroup=();
631: return '';
632: }
633:
634: sub end_conceptgroup {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
636: $Apache::imageresponse::conceptgroup=0;
637: my $result;
638: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
639: $target eq 'analyze') {
640: &Apache::response::pick_foil_for_concept($target,
641: ['area','text','image'],
642: \%Apache::hint::image,
643: $parstack,$safeeval);
644: } elsif ($target eq 'edit') {
645: $result=&Apache::edit::end_table();
646: }
647: return $result;
648: }
649:
650: sub insert_foil {
651: return '
652: <foil>
653: <image></image>
654: <text></text>
655: <rectangle></rectangle>
656: </foil>
657: ';
658: }
659:
660: $Apache::imageresponse::curname='';
661: sub start_foil {
662: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
663: my $result;
664: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
665: $target eq 'analyze' || $target eq 'answer') {
666: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
667: if ($name eq "") {
668: &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
669: $name=$Apache::lonxml::curdepth;
670: }
671: if (defined($Apache::response::foilnames{$name})) {
672: &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique."
673: ,'<b><tt>'.$name.'</tt></b>'));
674: }
675: $Apache::response::foilnames{$name}++;
676: if ( $Apache::imageresponse::conceptgroup
677: && !&Apache::response::showallfoils()
678: ) {
679: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
680: } else {
681: push(@{ $Apache::response::foilgroup{'names'} }, $name);
682: }
683: $Apache::imageresponse::curname=$name;
684: } elsif ($target eq 'edit') {
685: $result = &Apache::edit::tag_start($target,$token);
686: $result .= &Apache::edit::text_arg('Name:','name',$token);
687: $result .= &Apache::edit::end_row().
688: &Apache::edit::start_spanning_row();
689: } elsif ($target eq 'modified') {
690: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
691: $safeeval,'name');
692: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
693: }
694: return $result;;
695: }
696:
697: sub end_foil {
698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
699: my $result;
700: if ($target eq 'edit') {
701: $result=&Apache::edit::end_table();
702: }
703: return $result;
704: }
705:
706: sub start_text {
707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
708: my $result='';
709: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
710: || $target eq 'answer') {
711: &Apache::lonxml::startredirection;
712: } elsif ($target eq 'edit') {
713: my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
714: $result=&Apache::edit::tag_start($target,$token,'Task Description').
715: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
716: &Apache::edit::end_row();
717: } elsif ($target eq "modified") {
718: $result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
719: }
720: return $result;
721: }
722:
723: sub end_text {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
725: my $result;
726: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
727: || $target eq 'answer') {
728: my $name = $Apache::imageresponse::curname;
729: if ( $Apache::imageresponse::conceptgroup
730: && !&Apache::response::showallfoils()
731: ) {
732: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
733: } else {
734: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
735: }
736: } elsif ($target eq 'edit') {
737: $result=&Apache::edit::end_table();
738: }
739: return $result;
740: }
741:
742: sub start_image {
743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
744: my $result='';
745: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
746: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
747: || $target eq 'answer') {
748: &Apache::lonxml::startredirection;
749: } elsif ($target eq 'edit') {
750: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
751: $Apache::edit::bgimgsrc=$bgimg;
752: $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
753:
754: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
755: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
756: $result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
757: $result.=&Apache::edit::search(undef,'textnode').
758: &Apache::edit::end_row();
759: } elsif ($target eq "modified") {
760: $result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
761: }
762: return $result;
763: }
764:
765: sub end_image {
766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
767: my $result;
768: my $name = $Apache::imageresponse::curname;
769: if ($target eq 'web' || $target eq 'answer') {
770: my $image = &Apache::lonxml::endredirection();
771: &Apache::lonxml::debug("original image is $image");
772: if ( $Apache::imageresponse::conceptgroup
773: && !&Apache::response::showallfoils()
774: ) {
775: $Apache::response::conceptgroup{"$name.image"} = $image;
776: } else {
777: $Apache::response::foilgroup{"$name.image"} = $image;
778: }
779: } elsif ($target eq 'analyze') {
780: my $image = &Apache::lonxml::endredirection();
781: if ( $Apache::imageresponse::conceptgroup
782: && !&Apache::response::showallfoils()
783: ) {
784: $Apache::response::conceptgroup{"$name.image"} = $image;
785: } else {
786: $Apache::response::foilgroup{"$name.image"} = $image;
787: }
788: } elsif ($target eq 'edit') {
789: $result=&Apache::edit::end_table();
790: } elsif ($target eq 'tex') {
791: my $src = &Apache::lonxml::endredirection();
792:
793: # There may be all sorts of whitespace on fore and aft:
794:
795: $src =~ s/\s+$//s;
796: $src =~ s/^\s+//s;
797:
798: #
799: # Gnuplot e.g. just generates the latex to put inplace.
800: #
801: my $graphinclude;
802: if ($src =~ /^%DYNAMICIMAGE/) {
803: # This is needed because the newline is not always passed -> tex.
804: # At present we don't care about the sizing info.
805:
806: my ($commentline, $restofstuff) = split(/\n/, $src);
807: $graphinclude = $src;
808: $graphinclude =~ s/^$commentline//;
809: } elsif (!($src =~ /\\/)) {
810: my ($path,$file) = &Apache::londefdef::get_eps_image($src);
811: my ($height_param,$width_param)=
812: &Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
813: $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
814: } else {
815: $graphinclude = $src; # Already fully formed.
816: }
817: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
818: }
819: return $result;
820: }
821:
822: sub start_rectangle {
823: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
824: my $result='';
825: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
826: $target eq 'analyze' || $target eq 'answer') {
827: &Apache::lonxml::startredirection;
828: } elsif ($target eq 'edit') {
829: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
830: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
831: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
832: &Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
833: &Apache::edit::end_row();
834: } elsif ($target eq "modified") {
835: &Apache::edit::deletecoorddata();
836: $result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
837: }
838: return $result;
839: }
840:
841: sub grade_rectangle {
842: my ($spec,$x,$y) = @_;
843: &Apache::lonxml::debug("Spec is $spec");
844: my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
845: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
846: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
847: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
848: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
849: return 'APPROX_ANS';
850: }
851: return 'INCORRECT';
852: }
853:
854: sub end_rectangle {
855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
856: my $result;
857: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
858: $target eq 'analyze' || $target eq 'answer') {
859: my $name = $Apache::imageresponse::curname;
860: my $area = &Apache::lonxml::endredirection;
861: $area=~s/\s//g;
862: &Apache::lonxml::debug("out is $area for $name");
863: if ( $Apache::imageresponse::conceptgroup
864: && !&Apache::response::showallfoils()
865: ) {
866: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
867: } else {
868: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
869: }
870: } elsif ($target eq 'edit') {
871: $result=&Apache::edit::end_table();
872: }
873: return $result;
874: }
875:
876: sub start_polygon {
877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
878: my $result='';
879: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
880: $target eq 'analyze' || $target eq 'answer') {
881: &Apache::lonxml::startredirection;
882: } elsif ($target eq 'edit') {
883: my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
884: $result=&Apache::edit::tag_start($target,$token,'Polygon').
885: &Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
886: &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
887: &Apache::edit::end_row();
888: } elsif ($target eq "modified") {
889: $result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
890: }
891: return $result;
892: }
893:
894: sub grade_polygon {
895: my ($spec,$x,$y) = @_;
896: &Apache::lonxml::debug("Spec is $spec");
897: $spec=~s/^polygon://;
898: my @polygon;
899: foreach my $coord (split('-',$spec)) {
900: my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
901: &Apache::lonxml::debug("x $x y $y");
902: push @polygon, {'x'=>$x,'y'=>$y};
903: }
904: #make end point start point
905: push @polygon, $polygon[0];
906: # cribbed from
907: # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
908: my $crossing = 0; # the crossing number counter
909:
910: # loop through all edges of the polygon
911: for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1]
912: if ((($polygon[$i]->{'y'} <= $y)
913: && ($polygon[$i+1]->{'y'} > $y)) # an upward crossing
914: ||
915: (($polygon[$i]->{'y'} > $y)
916: && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
917: # compute the actual edge-ray intersect x-coordinate
918: my $vt = ($y - $polygon[$i]->{'y'})
919: / ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
920: if ($x < $polygon[$i]->{'x'} + $vt *
921: ($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
922: $crossing++; # a valid crossing of y=P.y right of P.x
923: }
924: }
925: }
926:
927: # 0 if even (out), and 1 if odd (in)
928: if ($crossing%2) {
929: return 'APPROX_ANS';
930: } else {
931: return 'INCORRECT';
932: }
933: }
934:
935: sub end_polygon {
936: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
937: my $result;
938: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
939: $target eq 'analyze' || $target eq 'answer') {
940: my $name = $Apache::imageresponse::curname;
941: my $area = &Apache::lonxml::endredirection;
942: $area=~s/\s*//g;
943: &Apache::lonxml::debug("out is $area for $name");
944: if ( $Apache::imageresponse::conceptgroup
945: && !&Apache::response::showallfoils()
946: ) {
947: push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
948: } else {
949: push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
950: }
951: } elsif ($target eq 'edit') {
952: $result=&Apache::edit::end_table();
953: }
954: return $result;
955: }
956: 1;
957: __END__
958:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to imageresponse.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework