Annotation of loncom/homework/imageresponse.pm, revision 1.83
1.58 albertel 1:
1.12 albertel 2: # The LearningOnline Network with CAPA
1.14 albertel 3: # image click response style
4: #
1.83 ! banghart 5: # $Id: imageresponse.pm,v 1.82 2007/04/18 01:06:22 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);
1.36 albertel 63: }
64: return $result;
1.1 albertel 65: }
66:
67: sub end_imageresponse {
1.30 albertel 68: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.74 albertel 69:
70: pop(@Apache::lonxml::namespace);
1.30 albertel 71: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
1.74 albertel 72:
1.30 albertel 73: my $result;
1.74 albertel 74: if ($target eq 'edit') {
75: $result=&Apache::edit::end_table();
1.77 albertel 76: } elsif ($target eq 'tex'
77: && $Apache::lonhomework::type eq 'exam') {
1.74 albertel 78: $result=&Apache::inputtags::exam_score_line($target);
79: }
80:
1.51 albertel 81: undef(%Apache::response::foilnames);
1.74 albertel 82:
83: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
84: $target eq 'tex' || $target eq 'analyze') {
85: &Apache::lonxml::increment_counter(&Apache::response::repetition());
86: }
87: &Apache::response::end_response();
88:
1.30 albertel 89: return $result;
1.1 albertel 90: }
91:
1.20 albertel 92: %Apache::response::foilgroup=();
1.1 albertel 93: sub start_foilgroup {
1.36 albertel 94: %Apache::response::foilgroup=();
95: $Apache::imageresponse::conceptgroup=0;
1.53 albertel 96: &Apache::response::pushrandomnumber();
1.36 albertel 97: return '';
1.1 albertel 98: }
99:
1.2 albertel 100: sub getfoilcounts {
1.36 albertel 101: my ($parstack,$safeeval)=@_;
1.12 albertel 102:
1.36 albertel 103: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
104: # +1 since instructors will count from 1
105: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
1.56 albertel 106: #if (&Apache::response::showallfoils()) { $max=$count; }
1.36 albertel 107: return ($count,$max);
1.2 albertel 108: }
109:
110: sub whichfoils {
1.36 albertel 111: my ($max)=@_;
112: if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
113: my @names = @{ $Apache::response::foilgroup{'names'} };
114: my @whichopt =();
115: while ((($#whichopt+1) < $max) && ($#names > -1)) {
116: &Apache::lonxml::debug("Have $#whichopt max is $max");
117: my $aopt;
1.56 albertel 118: # if (&Apache::response::showallfoils()) {
119: # $aopt=0;
120: # } else {
1.36 albertel 121: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1.56 albertel 122: # }
1.36 albertel 123: &Apache::lonxml::debug("From $#names elms, picking $aopt");
124: $aopt=splice(@names,$aopt,1);
125: &Apache::lonxml::debug("Picked $aopt");
126: push (@whichopt,$aopt);
127: }
128: return @whichopt;
1.2 albertel 129: }
130:
1.40 albertel 131: sub prep_image {
1.42 albertel 132: my ($image,$mode,$name)=@_;
1.40 albertel 133: my $part=$Apache::inputtags::part;
1.41 albertel 134: my $respid=$Apache::inputtags::response['-1'];
1.82 albertel 135: my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
136: &draw_image($mode,$image,$x,$y,$Apache::response::foilgroup{"$name.area"});
137: }
138:
139: sub draw_image {
140: my ($mode,$image,$x,$y,$areas) = @_;
141:
1.41 albertel 142: my $id=&Apache::loncommon::get_cgi_id();
1.82 albertel 143:
1.49 albertel 144: my (%x,$i);
1.78 www 145: $x{"cgi.$id.BGIMG"}=&escape($image);
1.82 albertel 146:
1.40 albertel 147: #draws 2 xs on the image at the clicked location
148: #one in white and then one in red on top of the one in white
1.82 albertel 149:
1.75 albertel 150: if (defined($x) && $x =~/\S/
151: && defined($y) && $y =~/\S/
1.82 albertel 152: && ($mode eq 'submission' || !&Apache::response::show_answer())
1.75 albertel 153: && $mode ne 'answeronly') {
1.40 albertel 154: my $length = 6;
155: my $width = 1;
156: my $extrawidth = 2;
1.48 albertel 157: my $xmin=($x-$length);
158: my $xmax=($x+$length);
159: my $ymin=($y-$length);
160: my $ymax=($y+$length);
161:
1.49 albertel 162: $x{"cgi.$id.OBJTYPE"}.='LINE:';
163: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 164: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 165: "FFFFFF",($width+$extrawidth)));
166: $x{"cgi.$id.OBJTYPE"}.='LINE:';
167: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 168: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 169: "FFFFFF",($width+$extrawidth)));
170: $x{"cgi.$id.OBJTYPE"}.='LINE:';
171: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 172: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
1.49 albertel 173: "FF0000",($width)));
174: $x{"cgi.$id.OBJTYPE"}.='LINE:';
175: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.58 albertel 176: $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
1.49 albertel 177: "FF0000",($width)));
1.40 albertel 178: }
1.75 albertel 179: if ($mode eq 'answer' || $mode eq 'answeronly') {
1.42 albertel 180: my $width = 1;
181: my $extrawidth = 2;
1.82 albertel 182: foreach my $area (@{ $areas }) {
1.43 albertel 183: if ($area=~/^rectangle:/) {
1.49 albertel 184: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
185: $i=$x{"cgi.$id.OBJCOUNT"}++;
1.43 albertel 186: my ($x1,$y1,$x2,$y2)=
187: ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.49 albertel 188: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
1.43 albertel 189: ($width+$extrawidth)));
1.49 albertel 190: $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
191: $i=$x{"cgi.$id.OBJCOUNT"}++;
192: $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
1.43 albertel 193: } elsif ($area=~/^polygon:(.*)/) {
1.49 albertel 194: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
195: $i=$x{"cgi.$id.OBJCOUNT"}++;
196: $x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
197: $x{"cgi.$id.OBJEXTRA$i"}=$1;
198: $x{"cgi.$id.OBJTYPE"}.='POLYGON:';
199: $i=$x{"cgi.$id.OBJCOUNT"}++;
200: $x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
201: $x{"cgi.$id.OBJEXTRA$i"}=$1;
1.43 albertel 202: }
1.42 albertel 203: }
204: }
1.41 albertel 205: &Apache::lonnet::appenv(%x);
206: return $id;
1.40 albertel 207: }
208:
1.2 albertel 209: sub displayfoils {
1.36 albertel 210: my ($target,@whichopt) = @_;
211: my $result ='';
212: my $name;
213: my $temp=1;
1.82 albertel 214: my @images;
1.36 albertel 215: foreach $name (@whichopt) {
216: $result.=$Apache::response::foilgroup{"$name.text"};
217: &Apache::lonxml::debug("Text is $result");
218: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
219: my $image=$Apache::response::foilgroup{"$name.image"};
220: &Apache::lonxml::debug("image is $image");
1.40 albertel 221: if ( $target eq 'web' && $image !~ /^http:/ ) {
1.47 albertel 222: $image=&clean_up_image($image);
1.82 albertel 223: }
224: push(@images,$image);
1.40 albertel 225: &Apache::lonxml::debug("image is $image");
1.36 albertel 226: if ( &Apache::response::show_answer() ) {
227: if ($target eq 'tex') {
228: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
229: } else {
1.42 albertel 230: my $token=&prep_image($image,'answer',$name);
1.40 albertel 231: $result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36 albertel 232: }
233: } else {
234: if ($target eq 'tex') {
235: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
236: } else {
1.40 albertel 237: my $id=$Apache::inputtags::response['-1'];
238: my $token=&prep_image($image);
239: my $temp=1;
240: $result.="<input type=\"image\" name=\"HWVAL_$id:$temp\" ".
241: "src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36 albertel 242: }
243: }
244: $temp++;
245: }
1.82 albertel 246: if ($target eq 'web') {
247: &Apache::response::setup_prior_tries_hash(\&format_prior_response,
248: [\@images]);
249: }
1.36 albertel 250: return $result;
1.47 albertel 251: }
252:
1.82 albertel 253: sub format_prior_response {
254: my ($mode,$answer,$other_data) = @_;
255: my ($x,$y)=split(/:/,$answer);
256: my $images = $other_data->[0];
257:
258: my $token = &draw_image('submission',$images->[0],$x,$y);
259:
260: return "<img class=\"LC_prior_image\" src=\"/adm/randomlabel.png?token=$token\" />";
261:
262: }
263:
1.75 albertel 264: sub display_answers {
265: my ($target,$whichopt)=@_;
266:
267: my $result;
268: foreach my $name (@$whichopt) {
269: my $image=$Apache::response::foilgroup{"$name.image"};
270: &Apache::lonxml::debug("image is $image");
271: if ( $target eq 'web' && $image !~ /^http:/ ) {
272: $image = &clean_up_image($image);
273: }
274: my $token=&prep_image($image,'answeronly',$name);
275:
276: $result.=&Apache::response::answer_header('imageresponse');
277: $result.=&Apache::response::answer_part('imageresponse',"<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n");
278: $result.=&Apache::response::answer_footer('imageresponse');
279: }
280: return $result;
281: }
282:
1.47 albertel 283: sub clean_up_image {
284: my ($image)=@_;
285: if ($image =~ /\s*<img\s*/) {
1.50 albertel 286: ($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
1.47 albertel 287: if ($image !~ /^http:/) {
288: $image=&Apache::lonnet::hreflocation('',$image);
289: }
290: if (!$image) {
291: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
292: }
293: } else {
294: $image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
1.66 foxr 295: &Apache::lonxml::debug("repcopying: $image");
1.64 raeburn 296: if (&Apache::lonnet::repcopy($image) ne 'ok') {
1.47 albertel 297: $image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
298: }
299: }
300: return $image;
1.2 albertel 301: }
302:
1.3 albertel 303: sub gradefoils {
1.36 albertel 304: my (@whichopt) = @_;
1.74 albertel 305:
306: my $partid = $Apache::inputtags::part;
307: my $id = $Apache::inputtags::response['-1'];
308:
309: if ($Apache::lonhomework::type eq 'exam') {
310: &Apache::response::scored_response($partid,$id);
311: return;
312: }
313:
1.36 albertel 314: my $x;
315: my $y;
316: my $result;
317: my $temp=1;
318: foreach my $name (@whichopt) {
1.65 albertel 319: $x=$env{"form.HWVAL_$id:$temp.x"};
320: $y=$env{"form.HWVAL_$id:$temp.y"};
1.36 albertel 321: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
322: if (defined($x) && defined($y) &&
323: defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
324: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
325: my $grade="INCORRECT";
326: foreach my $area (@areas) {
327: &Apache::lonxml::debug("Area is $area for $name");
328: $area =~ m/([a-z]*):/;
329: &Apache::lonxml::debug("Area of type $1");
330: if ($1 eq 'rectangle') {
331: $grade=&grade_rectangle($area,$x,$y);
1.43 albertel 332: } elsif ($1 eq 'polygon') {
333: $grade=&grade_polygon($area,$x,$y);
1.36 albertel 334: } else {
335: &Apache::lonxml::error("Unknown area style $area");
336: }
337: &Apache::lonxml::debug("Area said $grade");
338: if ($grade eq 'APPROX_ANS') { last; }
339: }
340: &Apache::lonxml::debug("Foil was $grade");
341: if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
342: if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
343: &Apache::lonxml::debug("Question is $result");
344: $temp++;
1.9 albertel 345: }
1.36 albertel 346: }
1.60 albertel 347: my $responsestr="$x:$y";
348: my $part=$Apache::inputtags::part;
349: my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
1.56 albertel 350: if ($result
351: && $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
1.60 albertel 352: &Apache::response::handle_previous(\%previous,$result);
353: $Apache::lonhomework::results{"resource.$part.$id.submission"}=$responsestr;
354: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
1.74 albertel 355: return;
1.3 albertel 356: }
357:
1.1 albertel 358: sub end_foilgroup {
1.36 albertel 359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
360: my $result='';
361: my @whichopt;
1.75 albertel 362:
1.38 albertel 363: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 364: $target eq 'analyze' || $target eq 'answer') {
365:
1.36 albertel 366: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
367: if ($count>$max) { $count=$max }
368: &Apache::lonxml::debug("Count is $count from $max");
1.75 albertel 369:
1.36 albertel 370: @whichopt = &whichfoils($max);
1.75 albertel 371:
1.36 albertel 372: if ($target eq 'web' || $target eq 'tex') {
373: $result=&displayfoils($target,@whichopt);
1.81 albertel 374: $Apache::lonxml::post_evaluate=0;
1.36 albertel 375: } elsif ($target eq 'grade') {
1.65 albertel 376: if ( defined $env{'form.submitted'}) { &gradefoils(@whichopt); }
1.37 albertel 377: } elsif ( $target eq 'analyze') {
378: &Apache::response::analyze_store_foilgroup(\@whichopt,
379: ['text','image','area']);
1.76 albertel 380: } elsif ($target eq 'answer'
381: && $env{'form.answer_output_mode'} ne 'tex') {
1.75 albertel 382: $result=&display_answers($target,\@whichopt);
1.37 albertel 383: }
1.75 albertel 384:
1.36 albertel 385: } elsif ($target eq 'edit') {
386: $result=&Apache::edit::end_table();
387: }
1.53 albertel 388: &Apache::response::poprandomnumber();
1.36 albertel 389: return $result;
1.1 albertel 390: }
391:
392: sub start_conceptgroup {
1.36 albertel 393: $Apache::imageresponse::conceptgroup=1;
394: %Apache::response::conceptgroup=();
395: return '';
1.1 albertel 396: }
397:
398: sub end_conceptgroup {
1.36 albertel 399: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
400: $Apache::imageresponse::conceptgroup=0;
401: my $result;
1.37 albertel 402: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
403: $target eq 'analyze') {
404: &Apache::response::pick_foil_for_concept($target,
405: ['area','text','image'],
406: \%Apache::hint::image,
407: $parstack,$safeeval);
1.36 albertel 408: } elsif ($target eq 'edit') {
409: $result=&Apache::edit::end_table();
410: }
411: return $result;
1.31 albertel 412: }
413:
414: sub insert_foil {
415: return '
416: <foil>
417: <image></image>
418: <text></text>
419: <rectangle></rectangle>
420: </foil>
421: ';
1.1 albertel 422: }
423:
1.12 albertel 424: $Apache::imageresponse::curname='';
1.1 albertel 425: sub start_foil {
1.36 albertel 426: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.67 albertel 427: my $result;
1.37 albertel 428: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 429: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 430: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.72 albertel 431: if ($name eq "") {
1.71 albertel 432: &Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
1.59 albertel 433: $name=$Apache::lonxml::curdepth;
434: }
1.51 albertel 435: if (defined($Apache::response::foilnames{$name})) {
436: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
437: }
1.52 albertel 438: $Apache::response::foilnames{$name}++;
1.36 albertel 439: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 440: #&& !&Apache::response::showallfoils()
441: ) {
1.36 albertel 442: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
443: } else {
444: push(@{ $Apache::response::foilgroup{'names'} }, $name);
445: }
446: $Apache::imageresponse::curname=$name;
1.67 albertel 447: } elsif ($target eq 'edit') {
448: $result = &Apache::edit::tag_start($target,$token);
449: $result .= &Apache::edit::text_arg('Name:','name',$token);
450: $result .= &Apache::edit::end_row().
451: &Apache::edit::start_spanning_row();
452: } elsif ($target eq 'modified') {
453: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
454: $safeeval,'name');
455: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
456: }
457: return $result;;
1.1 albertel 458: }
459:
460: sub end_foil {
1.26 albertel 461: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
462: my $result;
463: if ($target eq 'edit') {
464: $result=&Apache::edit::end_table();
465: }
466: return $result;
1.1 albertel 467: }
468:
469: sub start_text {
1.36 albertel 470: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
471: my $result='';
1.75 albertel 472: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
473: || $target eq 'answer') {
1.36 albertel 474: &Apache::lonxml::startredirection;
475: } elsif ($target eq 'edit') {
1.73 albertel 476: my $descr=&Apache::lonxml::get_all_text('/text',$parser,$style);
1.36 albertel 477: $result=&Apache::edit::tag_start($target,$token,'Task Description').
478: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
479: &Apache::edit::end_row();
480: } elsif ($target eq "modified") {
1.39 albertel 481: $result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
1.36 albertel 482: }
483: return $result;
1.1 albertel 484: }
485:
486: sub end_text {
1.36 albertel 487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
488: my $result;
1.75 albertel 489: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
490: || $target eq 'answer') {
1.36 albertel 491: my $name = $Apache::imageresponse::curname;
492: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 493: #&& !&Apache::response::showallfoils()
494: ) {
1.36 albertel 495: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
496: } else {
497: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
498: }
499: } elsif ($target eq 'edit') {
500: $result=&Apache::edit::end_table();
501: }
502: return $result;
1.1 albertel 503: }
504:
505: sub start_image {
1.36 albertel 506: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
507: my $result='';
1.83 ! banghart 508: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
1.75 albertel 509: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze'
510: || $target eq 'answer') {
1.36 albertel 511: &Apache::lonxml::startredirection;
512: } elsif ($target eq 'edit') {
1.73 albertel 513: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
1.36 albertel 514: $Apache::edit::bgimgsrc=$bgimg;
515: $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
516:
517: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
518: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
1.83 ! banghart 519: $result.=&Apache::edit::browse(undef,'textnode',undef,$only).' ';
1.36 albertel 520: $result.=&Apache::edit::search(undef,'textnode').
521: &Apache::edit::end_row();
522: } elsif ($target eq "modified") {
1.39 albertel 523: $result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
1.36 albertel 524: }
525: return $result;
1.1 albertel 526: }
527:
528: sub end_image {
1.36 albertel 529: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
530: my $result;
531: my $name = $Apache::imageresponse::curname;
1.75 albertel 532: if ($target eq 'web' || $target eq 'answer') {
1.62 albertel 533: my $image = &Apache::lonxml::endredirection();
1.36 albertel 534: &Apache::lonxml::debug("original image is $image");
1.37 albertel 535: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 536: #&& !&Apache::response::showallfoils()
537: ) {
1.37 albertel 538: $Apache::response::conceptgroup{"$name.image"} = $image;
539: } else {
540: $Apache::response::foilgroup{"$name.image"} = $image;
541: }
542: } elsif ($target eq 'analyze') {
1.62 albertel 543: my $image = &Apache::lonxml::endredirection();
1.36 albertel 544: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 545: #&& !&Apache::response::showallfoils()
546: ) {
1.36 albertel 547: $Apache::response::conceptgroup{"$name.image"} = $image;
548: } else {
549: $Apache::response::foilgroup{"$name.image"} = $image;
550: }
551: } elsif ($target eq 'edit') {
552: $result=&Apache::edit::end_table();
553: } elsif ($target eq 'tex') {
1.62 albertel 554: my $src = &Apache::lonxml::endredirection();
1.68 foxr 555:
556: # There may be all sorts of whitespace on fore and aft:
557:
1.69 foxr 558: $src =~ s/\s+$//s;
559: $src =~ s/^\s+//s;
1.68 foxr 560:
561: #
562: # Gnuplot e.g. just generates the latex to put inplace.
563: #
564: my $graphinclude;
1.70 foxr 565: if ($src =~ /^%DYNAMICIMAGE/) {
566: # This is needed because the newline is not always passed -> tex.
567: # At present we don't care about the sizing info.
568:
569: my ($commentline, $restofstuff) = split(/\n/, $src);
1.68 foxr 570: $graphinclude = $src;
1.70 foxr 571: $graphinclude =~ s/^$commentline//;
1.68 foxr 572: } else {
573: my ($path,$file) = &Apache::londefdef::get_eps_image($src);
574: my ($height_param,$width_param)=
575: &Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
576: $graphinclude = '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'}';
577: }
578: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent '.$graphinclude;
1.36 albertel 579: }
580: return $result;
1.1 albertel 581: }
582:
583: sub start_rectangle {
1.36 albertel 584: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
585: my $result='';
1.38 albertel 586: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 587: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 588: &Apache::lonxml::startredirection;
589: } elsif ($target eq 'edit') {
1.73 albertel 590: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser,$style);
1.36 albertel 591: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
592: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
1.44 albertel 593: &Apache::edit::entercoord(undef,'textnode',undef,undef,'box').
1.36 albertel 594: &Apache::edit::end_row();
595: } elsif ($target eq "modified") {
1.44 albertel 596: &Apache::edit::deletecoorddata();
1.39 albertel 597: $result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
1.36 albertel 598: }
599: return $result;
1.1 albertel 600: }
601:
1.3 albertel 602: sub grade_rectangle {
1.36 albertel 603: my ($spec,$x,$y) = @_;
604: &Apache::lonxml::debug("Spec is $spec");
1.43 albertel 605: my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
1.36 albertel 606: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
607: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
608: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
609: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
610: return 'APPROX_ANS';
611: }
612: return 'INCORRECT';
1.3 albertel 613: }
614:
1.1 albertel 615: sub end_rectangle {
1.36 albertel 616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
617: my $result;
1.38 albertel 618: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 619: $target eq 'analyze' || $target eq 'answer') {
1.36 albertel 620: my $name = $Apache::imageresponse::curname;
621: my $area = &Apache::lonxml::endredirection;
1.54 albertel 622: $area=~s/\s//g;
1.36 albertel 623: &Apache::lonxml::debug("out is $area for $name");
624: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 625: #&& !&Apache::response::showallfoils()
626: ) {
1.36 albertel 627: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
628: } else {
629: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
1.43 albertel 630: }
631: } elsif ($target eq 'edit') {
632: $result=&Apache::edit::end_table();
633: }
634: return $result;
635: }
636:
637: sub start_polygon {
638: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
639: my $result='';
640: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 641: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 642: &Apache::lonxml::startredirection;
643: } elsif ($target eq 'edit') {
1.73 albertel 644: my $coords=&Apache::lonxml::get_all_text('/polygon',$parser,$style);
1.43 albertel 645: $result=&Apache::edit::tag_start($target,$token,'Polygon').
646: &Apache::edit::editline($token->[1],$coords,'Coordinate list',40).
1.44 albertel 647: &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon').
1.43 albertel 648: &Apache::edit::end_row();
649: } elsif ($target eq "modified") {
650: $result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser);
651: }
652: return $result;
653: }
654:
655: sub grade_polygon {
656: my ($spec,$x,$y) = @_;
657: &Apache::lonxml::debug("Spec is $spec");
658: $spec=~s/^polygon://;
659: my @polygon;
660: foreach my $coord (split('-',$spec)) {
661: my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
662: &Apache::lonxml::debug("x $x y $y");
663: push @polygon, {'x'=>$x,'y'=>$y};
664: }
665: #make end point start point
666: push @polygon, $polygon[0];
667: # cribbed from
668: # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm
669: my $crossing = 0; # the crossing number counter
670:
671: # loop through all edges of the polygon
672: for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1]
673: if ((($polygon[$i]->{'y'} <= $y)
674: && ($polygon[$i+1]->{'y'} > $y)) # an upward crossing
675: ||
676: (($polygon[$i]->{'y'} > $y)
677: && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing
678: # compute the actual edge-ray intersect x-coordinate
679: my $vt = ($y - $polygon[$i]->{'y'})
680: / ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'});
681: if ($x < $polygon[$i]->{'x'} + $vt *
682: ($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect
683: $crossing++; # a valid crossing of y=P.y right of P.x
684: }
685: }
686: }
687:
688: # 0 if even (out), and 1 if odd (in)
689: if ($crossing%2) {
690: return 'APPROX_ANS';
691: } else {
692: return 'INCORRECT';
693: }
694: }
695:
696: sub end_polygon {
697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
698: my $result;
699: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
1.75 albertel 700: $target eq 'analyze' || $target eq 'answer') {
1.43 albertel 701: my $name = $Apache::imageresponse::curname;
702: my $area = &Apache::lonxml::endredirection;
1.48 albertel 703: $area=~s/\s*//g;
1.43 albertel 704: &Apache::lonxml::debug("out is $area for $name");
705: if ( $Apache::imageresponse::conceptgroup
1.56 albertel 706: #&& !&Apache::response::showallfoils()
707: ) {
1.43 albertel 708: push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
709: } else {
710: push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
1.36 albertel 711: }
712: } elsif ($target eq 'edit') {
713: $result=&Apache::edit::end_table();
714: }
715: return $result;
1.1 albertel 716: }
717: 1;
718: __END__
719:
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