Annotation of loncom/homework/caparesponse/caparesponse.pm, revision 1.120
1.3 albertel 1: # The LearningOnline Network with CAPA
2: # caparesponse definition
1.47 albertel 3: #
1.120 ! sakharuk 4: # $Id: caparesponse.pm,v 1.119 2003/10/23 19:29:24 albertel Exp $
1.47 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.3 albertel 28:
29: package Apache::caparesponse;
30: use strict;
1.4 albertel 31: use capa;
1.3 albertel 32:
1.50 harris41 33: BEGIN {
1.89 albertel 34: &Apache::lonxml::register('Apache::caparesponse',('caparesponse','numericalresponse','stringresponse','formularesponse'));
1.3 albertel 35: }
36:
1.89 albertel 37: sub start_numericalresponse {
38: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
39: my $id = &Apache::response::start_response($parstack,$safeeval);
40: my $result;
41: if ($target eq 'edit') {
42: $result.=&Apache::edit::tag_start($target,$token);
43: $result.=&Apache::edit::text_arg('Answer:','answer',$token);
1.117 albertel 44: $result.=&Apache::edit::text_arg('Incorrect Answers:','incorrect',
45: $token);
1.89 albertel 46: if ($token->[1] eq 'numericalresponse') {
47: $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
48: &Apache::loncommon::help_open_topic('Physical_Units');
49: $result.=&Apache::edit::text_arg('Format:','format',$token,4).
50: &Apache::loncommon::help_open_topic('Numerical_Response_Format');
51: } elsif ($token->[1] eq 'stringresponse') {
52: $result.=&Apache::edit::select_arg('Type:','type',
53: [['cs','Case Sensitive'],['ci','Case Insensitive'],
54: ['mc','Case Insensitive, Any Order']],$token);
55: } elsif ($token->[1] eq 'formularesponse') {
56: $result.=&Apache::edit::text_arg('Sample Points:','samples',
57: $token,40).
58: &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
59: }
60: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
61: } elsif ($target eq 'modified') {
62: my $constructtag;
63: if ($token->[1] eq 'numericalresponse') {
64: $constructtag=&Apache::edit::get_new_args($token,$parstack,
65: $safeeval,'answer',
1.117 albertel 66: 'incorrect','unit',
67: 'format');
1.89 albertel 68: } elsif ($token->[1] eq 'stringresponse') {
69: $constructtag=&Apache::edit::get_new_args($token,$parstack,
70: $safeeval,'answer',
71: 'type');
72: } elsif ($token->[1] eq 'formularesponse') {
73: $constructtag=&Apache::edit::get_new_args($token,$parstack,
74: $safeeval,'answer',
75: 'samples');
76: }
77: if ($constructtag) {
78: $result = &Apache::edit::rebuild_tag($token);
79: $result.=&Apache::edit::handle_insert();
1.22 albertel 80: }
1.89 albertel 81: } elsif ($target eq 'meta') {
82: $result=&Apache::response::meta_package_write('numericalresponse');
83: } elsif ($target eq 'answer' || $target eq 'grade') {
84: &Apache::response::reset_params();
1.96 albertel 85: } elsif ($target eq 'web') {
86: my $partid = $Apache::inputtags::part;
87: my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
88: &Apache::lonxml::debug("Got unit $hideunit for $partid $id");
89: #no way to enter units, with radio buttons
90: if (lc($hideunit) eq "yes") {
91: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
92: $safeeval);
93: if ($unit =~ /\S/) { $result.=" (in $unit) "; }
94: }
1.16 albertel 95: }
1.89 albertel 96: return $result;
1.21 albertel 97: }
98:
1.89 albertel 99: sub end_numericalresponse {
100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.90 albertel 101: my $increment=1;
1.89 albertel 102: my $result = '';
103: if (!$Apache::lonxml::default_homework_loaded) {
104: &Apache::lonxml::default_homework_load($safeeval);
1.34 albertel 105: }
1.95 albertel 106: if ( $target eq 'grade' && defined($ENV{'form.submitted'})) {
1.90 albertel 107: &Apache::response::setup_params($$tagstack[-1]);
108: $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
109: my $partid = $Apache::inputtags::part;
110: my $id = $Apache::inputtags::response['-1'];
1.95 albertel 111: if ($Apache::lonhomework::type eq 'exam' &&
112: ($$tagstack[-1] eq 'formularesponse' ||
113: $$tagstack[-1] eq 'stringresponse')) {
114: $increment=&Apache::response::scored_response($partid,$id);
115: } else {
116: my $response = &Apache::response::getresponse();
117: if ( $response =~ /[^\s]/) {
118: my $ad;
119: my %previous = &Apache::response::check_for_previous($response,$partid,$id);
120: &Apache::lonxml::debug("submitted a $response<br>\n");
121: &Apache::lonxml::debug($$parstack[-1] . "\n<br>");
122:
123: if ($ENV{'form.submitted'} eq 'scantron') {
1.117 albertel 124: my $number_of_bubbles = &Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.numbubbles');
125: if (!$number_of_bubbles) { $number_of_bubbles=8; }
126: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
127: my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
128: my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,$safeeval);
129: my @values=&make_numerical_bubbles($number_of_bubbles,$target,$answers[0],$formats[0],\@incorrect);
1.95 albertel 130: $response=$values[$response];
131: } else {
132: $response =~ s/\\/\\\\/g;
133: $response =~ s/\'/\\\'/g;
134: }
1.115 albertel 135: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
1.95 albertel 136: &Apache::lonxml::debug("current $response");
137: my $expression="&caparesponse_check_list('".$response."','".
138: $$parstack[-1];
1.96 albertel 139: my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
1.95 albertel 140: #no way to enter units, with radio buttons
1.96 albertel 141: if ($Apache::lonhomework::type eq 'exam' ||
142: lc($hideunit) eq "yes") {
1.95 albertel 143: $expression.=';my $unit=undef;';
144: }
145: foreach my $key (keys(%Apache::inputtags::params)) {
146: $expression.= ';my $'. #'
147: $key.'="'.$Apache::inputtags::params{$key}.'"';
148: }
149: if ($$tagstack[-1] eq 'formularesponse') {
150: $expression.=';my $type="fml";';
151: } elsif ($$tagstack[-1] eq 'numericalresponse') {
152: $expression.=';my $type="float";';
153: }
154: $expression.="');";
1.105 albertel 155: my @answer=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
156: &Apache::lonxml::debug('answer is'.join(':',@answer));
157: @{$safeeval->varglob('CAPARESPONSE_CHECK_LIST_answer')}=@answer;
158:
1.95 albertel 159: $result = &Apache::run::run($expression,$safeeval);
160: my ($awards) = split /:/ , $result;
161: ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
162: &Apache::lonxml::debug("$expression");
163: &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
164: &Apache::response::handle_previous(\%previous,$ad);
165: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
166: $result='';
1.90 albertel 167: }
1.89 albertel 168: }
169: } elsif ($target eq 'web' || $target eq 'tex') {
1.90 albertel 170: my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,
171: $safeeval);
1.89 albertel 172: my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
173: my $status = $Apache::inputtags::status['-1'];
1.114 albertel 174: if ( &Apache::response::show_answer() ) {
1.89 albertel 175: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
176: $safeeval);
177: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
178: $safeeval);
179: if ($target eq 'web') {
180: $result="<br />The correct answer is ";
181: }
182: for (my $i=0; $i <= $#answers; $i++) {
183: my $answer=$answers[$i];
184: my $format;
185: if ($#formats > 0) {
186: $format=$formats[$i];
187: } else {
188: $format=$formats[0];
189: }
190: my $formatted;
191: if ((defined($format)) && ($format ne '')) {
1.109 albertel 192: $format=~s/e/E/g;
1.89 albertel 193: &Apache::lonxml::debug("formatting with :$format: answer :$answer:");
194: $formatted=sprintf('%.'.$format,$answer).',';
195: } else {
196: &Apache::lonxml::debug("no format answer :$answer:");
197: $formatted="$answer,";
198: }
199: if ($target eq 'tex') {
200: $formatted='';
201: #$formatted=&Apache::lonxml::latex_special_symbols($formatted);
202: }
203: $result.=$formatted;
204: }
205: chop $result;
206: if ($target eq 'web') {
207: $result.=" $unit.<br />";
208: }
209: }
210: if ($Apache::lonhomework::type eq 'exam') {
1.118 albertel 211: my $partid=$Apache::inputtags::part;
212: my $id=$Apache::inputtags::response[-1];
1.117 albertel 213: my $number_of_bubbles = &Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.numbubbles');
214: if (!$number_of_bubbles) { $number_of_bubbles=8; }
1.89 albertel 215: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
216: $safeeval);
217: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
218: $safeeval);
1.117 albertel 219: my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,$safeeval);
1.90 albertel 220: my @bubble_values=&make_numerical_bubbles($number_of_bubbles,
1.91 albertel 221: $target,$answers[0],
1.117 albertel 222: $formats[0],\@incorrect);
1.89 albertel 223: my @alphabet=('A'..'Z');
224: if ($target eq 'web') {
225: if ($$tagstack[-1] eq 'numericalresponse') {
226: if ($unit=~/\S/) {$result.=' (in '.$unit.')<br /><br />';}
227: $result.= '<table border="1"><tr>';
1.116 albertel 228: my $previous=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.$id.submission"};
1.90 albertel 229: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
1.116 albertel 230: my $checked='';
231: if ($previous eq $bubble_values[$ind]) {
232: $checked=" checked='on' ";
233: }
1.90 albertel 234: $result.='<td><input type="radio" name="HWVAL_'.$id.
1.116 albertel 235: '" value="'.$bubble_values[$ind].'" '.$checked
236: .' /><b>'.$alphabet[$ind].'</b>: '.
237: $bubble_values[$ind].'</td>';
1.89 albertel 238: }
239: $result.='</tr></table>';
240: } elsif ($$tagstack[-1] eq 'formularesponse') {
1.90 albertel 241: $result.= '<br /><br /><font color="red">
242: <textarea name="HWVAL_'.$id.'" rows="4" cols="50">
243: </textarea></font> <br /><br />';
1.89 albertel 244: }
245: } elsif ($target eq 'tex') {
1.107 sakharuk 246: if ((defined $unit) and ($unit=~/\S/) and ($Apache::lonhomework::type eq 'exam')) {
1.89 albertel 247: $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
248: }
249: if ($$tagstack[-1] eq 'numericalresponse') {
1.90 albertel 250: my ($celllength,$number_of_tables,@table_range)=
251: &get_table_sizes($formats[0],$number_of_bubbles);
1.89 albertel 252: my $j=0;
253: my $cou=0;
254: $result.='\vskip -1 mm \noindent \begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]';
255: for (my $i=0;$i<$number_of_tables;$i++) {
256: $result.='\vskip -1 mm \noindent \begin{tabular}{';
1.90 albertel 257: for (my $ind=0;$ind<$table_range[$j];$ind++) {
1.89 albertel 258: $result.='lp{'.$celllength.' mm}';
259: }
260: $result.='}';
1.90 albertel 261: for (my $ind=$cou;$ind<$cou+$table_range[$j];$ind++) {
1.91 albertel 262: $result.='\hskip -3 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -2 mm & {\small '.$bubble_values[$ind].'} ';
1.89 albertel 263: if ($ind != $cou+$table_range[$j]-1) {$result.=' & ';}
264: }
265: $cou += $table_range[$j];
266: $j++;
267: $result.='\\\\\end{tabular}\vskip 0 mm ';
268: }
269: $result.='\end{enumerate}';
270: } else {
271: $result.='\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
1.93 albertel 272: my $repetition = &Apache::response::repetition();
1.89 albertel 273: $result.='\begin{enumerate}';
274: for (my $i=0;$i<$repetition;$i++) {
1.93 albertel 275: $result.='\item[\textbf{'.($Apache::lonxml::counter+$i).'}.]\textit{Leave blank on scoring form}\vskip 0 mm';
1.89 albertel 276: }
1.90 albertel 277: $increment=$repetition;
1.89 albertel 278: $result.= '\end{enumerate}';
279: }
280: }
281: }
282: } elsif ($target eq 'edit') {
283: $result.='</td></tr>'.&Apache::edit::end_table;
284: } elsif ($target eq 'answer' || $target eq 'analyze') {
1.58 sakharuk 285:
1.89 albertel 286: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
287: if ($target eq 'analyze') {
288: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
289: $Apache::lonhomework::analyze{"$part_id.type"} = $$tagstack[-1];
1.117 albertel 290: my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,$safeeval);
291: push (@{ $Apache::lonhomework::analyze{"$part_id.incorrect"} }, @incorrect);
1.89 albertel 292: }
293: &Apache::response::setup_params($$tagstack[-1]);
294: my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
1.58 sakharuk 295: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
296: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);
1.89 albertel 297: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);
298:
299: if ($target eq 'answer') {
300: $result.=&Apache::response::answer_header($$tagstack[-1]);
301: }
302: for(my $i=0;$i<=$#answers;$i++) {
303: my $ans=$answers[$i];
1.90 albertel 304: my $fmt=$formats[0];
305: if (@formats && $#formats) {$fmt=$formats[$i];}
1.89 albertel 306: my ($high,$low);
307: if ($Apache::inputtags::params{'tol'}) {
308: ($high,$low)=&get_tolrange($ans,$Apache::inputtags::params{'tol'});
309: }
310: my ($sighigh,$siglow);
311: if ($Apache::inputtags::params{'sig'}) {
312: ($sighigh,$siglow)=&get_sigrange($Apache::inputtags::params{'sig'});
313: }
1.102 albertel 314: if ($fmt && $$tagstack[-1] eq 'numericalresponse') {
1.112 albertel 315: $fmt=~s/e/E/g;
1.89 albertel 316: $ans = sprintf('%.'.$fmt,$ans);
317: if ($high) {
1.90 albertel 318: $high=sprintf('%.'.$fmt,$high);
319: $low =sprintf('%.'.$fmt,$low);
1.62 sakharuk 320: }
1.60 sakharuk 321: }
1.89 albertel 322: if ($target eq 'answer') {
1.102 albertel 323: if ($high && $$tagstack[-1] eq 'numericalresponse') { $ans.=' ['.$low.','.$high.']'; }
324: if ($sighigh && $$tagstack[-1] eq 'numericalresponse') {
1.101 albertel 325: if ($ENV{'form.answer_output_mode'} eq 'tex') {
1.106 sakharuk 326: $ans.= " Sig $siglow - $sighigh";
1.98 sakharuk 327: } else {
1.101 albertel 328: $ans.= " Sig <i>$siglow - $sighigh</i>";
1.98 sakharuk 329: }
330: }
1.89 albertel 331: $result.=&Apache::response::answer_part($$tagstack[-1],$ans);
332: } elsif ($target eq 'analyze') {
333: push (@{ $Apache::lonhomework::analyze{"$part_id.answer"} }, $ans);
334: if ($high) {
335: push (@{ $Apache::lonhomework::analyze{"$part_id.ans_high"} }, $high);
336: push (@{ $Apache::lonhomework::analyze{"$part_id.ans_low"} }, $low);
1.58 sakharuk 337: }
1.79 sakharuk 338: }
1.36 albertel 339: }
1.102 albertel 340: if (defined($unit) and ($unit ne '') and
341: $$tagstack[-1] eq 'numericalresponse') {
1.89 albertel 342: if ($target eq 'answer') {
1.101 albertel 343: if ($ENV{'form.answer_output_mode'} eq 'tex') {
1.98 sakharuk 344: $result.=&Apache::response::answer_part($$tagstack[-1],
1.106 sakharuk 345: " Unit: $unit ");
1.98 sakharuk 346: } else {
347: $result.=&Apache::response::answer_part($$tagstack[-1],
348: "Unit: <b>$unit</b>");
349: }
1.89 albertel 350: } elsif ($target eq 'analyze') {
1.103 albertel 351: push (@{ $Apache::lonhomework::analyze{"$part_id.unit"} }, $unit);
1.89 albertel 352: }
353: }
1.103 albertel 354: if ($type || $$tagstack[-1] eq 'stringresponse') {
1.89 albertel 355: my $string='Case Insensitive';
356: if ($type eq 'mc') {
357: $string='Multiple Choice';
358: } elsif ($type eq 'cs') {
359: $string='Case Sensitive';
360: } elsif ($type eq 'ci') {
361: $string='Case Insensitive';
362: } elsif ($type eq 'fml') {
363: $string='Formula';
364: }
365: if ($target eq 'answer') {
1.101 albertel 366: if ($ENV{'form.answer_output_mode'} eq 'tex') {
367: $result.=&Apache::response::answer_part($$tagstack[-1],
1.108 sakharuk 368: "$string");
1.101 albertel 369: } else {
370: $result.=&Apache::response::answer_part($$tagstack[-1],
371: "<b>$string</b>");
372: }
1.89 albertel 373: } elsif ($target eq 'analyze') {
1.103 albertel 374: push (@{ $Apache::lonhomework::analyze{"$part_id.str_type"} },
1.89 albertel 375: $type);
376: }
377: }
378: if ($$tagstack[-1] eq 'formularesponse' && $target eq 'answer') {
379: my $samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);
380: $result.=&Apache::response::answer_part($$tagstack[-1],$samples);
381: }
382: if ($target eq 'answer') {
383: $result.=&Apache::response::answer_footer($$tagstack[-1]);
384: }
1.69 sakharuk 385: }
1.120 ! sakharuk 386: if ($target eq 'grade' || $target eq 'web' ||
1.90 albertel 387: $target eq 'tex' || $target eq 'analyze') {
388: &Apache::lonxml::increment_counter($increment);
389: }
1.89 albertel 390: &Apache::response::end_response;
391: return $result;
1.90 albertel 392: }
393:
394: sub get_table_sizes {
395: my ($format,$number_of_bubbles)=@_;
396: my $max_val = 0;
397: if ($format=~m/^(\d+)E([^\d]*)(\d*)$/) {
398: $max_val=$1+$2+4;
399: } else {
400: $max_val=4;
401: }
402: $max_val = int(0.9*$ENV{'form.textwidth'}/(($max_val+6)*2));
403: my $celllength = 0.9*$ENV{'form.textwidth'}/$max_val-10;
404: my @table_range = ();
405: my $number_of_tables = int($number_of_bubbles/$max_val);
406: for (my $i=0;$i<$number_of_tables;$i++) {push @table_range,$max_val;}
407: if ($number_of_bubbles % $max_val != 0) {
408: $number_of_tables++;
409: push @table_range,($number_of_bubbles % $max_val);
410: }
411: return ($celllength,$number_of_tables,@table_range);
412: }
413:
414: sub format_number {
415: my ($number,$format,$target)=@_;
416: my $ans;
417: if ($format ne '') {
1.109 albertel 418: $format=~s/e/E/g;
1.90 albertel 419: $ans = sprintf('%.'.$format,$number);
420: } else {
421: my $format = '';
422: #What is the number? (integer,decimal,floating point)
423: if ($number=~/^(\d*\.?\d*)(E|e)(\d*)$/) {
1.113 sakharuk 424: $format = '3e';
1.90 albertel 425: } elsif ($number=~/^(\d*)\.(\d*)$/) {
426: $format = '4f';
427: } elsif ($number=~/^(\d*)$/) {
428: $format = 'd';
429: }
430: $ans = sprintf('%.'.$format,$number);
431: }
432: if ($target eq 'tex') {
433: if ($ans =~ m/([0-9\.\-\+]+)E([0-9\-\+]+)/ ) {
434: my $number = $1;
435: my $power = $2;
436: $power=~s/^\+//;
437: $power=~s/^(-?)0+(\d+)//;
438: $ans=$number.'$\times 10^{'.$1.$2.'}$'; #'stupidemacs
439: }
440: }
441: return $ans;
442: }
443:
444: sub make_numerical_bubbles {
1.117 albertel 445: my ($number_of_bubbles,$target,$answer,$format,$incorrect) =@_;
1.91 albertel 446: my @bubble_values = ();
1.119 albertel 447: &Apache::lonxml::debug("answer is $answer incorrect is $incorrect");
448: my @oldseed=&Math::Random::random_get_seed();
1.117 albertel 449: if (defined($incorrect) && ref($incorrect)) {
450: &Apache::lonxml::debug("inside ".(scalar(@$incorrect)+1 gt $number_of_bubbles));
451: if (scalar(@$incorrect)+1 >= $number_of_bubbles) {
452: &Apache::lonxml::debug("inside ".(scalar(@$incorrect)+1).":$number_of_bubbles");
453: &Apache::response::setrandomnumber();
454: my @rand_inc=&Math::Random::random_permutation(@$incorrect);
455: @bubble_values=@rand_inc[0..($number_of_bubbles-2)];
456: @bubble_values=sort {$a <=> $b} (@bubble_values,$answer);
457: &Apache::lonxml::debug("Answer was :$answer: returning :".$#bubble_values.": whih are :".join(':',@bubble_values));
1.119 albertel 458: &Math::Random::random_set_seed(@oldseed);
1.117 albertel 459: return @bubble_values;
460: }
461: #FIXME what to do when not enough incorrects specified?
462: }
1.90 albertel 463: my @factors = (1.13,1.17,1.25,1.33,1.45); #default values of factors
464: my @powers = (1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0); #default values for powers
465: &Apache::response::setrandomnumber();
466: my $ind=&Math::Random::random_uniform_integer(1,0,$#powers);
467: my $power = $powers[$ind];
468: $ind=&Math::Random::random_uniform_integer(1,0,$#factors);
469: my $factor = $factors[$ind];
470: for ($ind=0;$ind<$number_of_bubbles;$ind++) {
1.91 albertel 471: $bubble_values[$ind] = $answer*($factor**($power-$powers[$#powers-$ind]));
472: $bubble_values[$ind] = &format_number($bubble_values[$ind],
473: $format,$target);
474:
1.90 albertel 475: }
1.119 albertel 476: &Math::Random::random_set_seed(@oldseed);
1.91 albertel 477: return @bubble_values;
1.51 albertel 478: }
479:
480: sub get_tolrange {
1.89 albertel 481: my ($ans,$tol)=@_;
482: my ($high,$low);
483: if ($tol =~ /%$/) {
484: chop($tol);
485: my $change=$ans*($tol/100.0);
486: $high=$ans+$change;
487: $low=$ans-$change;
488: } else {
489: $high=$ans+$tol;
490: $low=$ans-$tol;
491: }
492: return ($high,$low);
1.52 albertel 493: }
494:
495: sub get_sigrange {
1.89 albertel 496: my ($sig)=@_;
497: &Apache::lonxml::debug("Got a sig of :$sig:");
498: my $sig_lbound;
499: my $sig_ubound;
500: if ($sig eq '') {
501: $sig_lbound = 0; #SIG_LB_DEFAULT
502: $sig_ubound =15; #SIG_UB_DEFAULT
503: } else {
504: ($sig_lbound,$sig_ubound) = split(/,/,$sig);
505: if (!$sig_lbound) {
506: $sig_lbound = 0; #SIG_LB_DEFAULT
507: $sig_ubound =15; #SIG_UB_DEFAULT
508: }
509: if (!$sig_ubound) { $sig_ubound=$sig_lbound; }
1.52 albertel 510: }
1.89 albertel 511: return ($sig_ubound,$sig_lbound);
1.34 albertel 512: }
513:
514: sub start_stringresponse {
1.89 albertel 515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
516: my $result;
517: if ($target eq 'meta') {
1.104 bowersj2 518: &Apache::response::start_response($parstack,$safeeval);
1.89 albertel 519: $result=&Apache::response::meta_package_write('stringresponse');
1.104 bowersj2 520: &Apache::response::end_response();
1.89 albertel 521: } else {
522: $result.=&start_numericalresponse(@_);
523: }
524: return $result;
1.34 albertel 525: }
526:
527: sub end_stringresponse {
1.89 albertel 528: return end_numericalresponse(@_);
1.44 albertel 529: }
530:
531: sub start_formularesponse {
1.89 albertel 532: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
533: my $result;
534: if ($target eq 'meta') {
1.104 bowersj2 535: &Apache::response::start_response($parstack,$safeeval);
1.89 albertel 536: $result=&Apache::response::meta_package_write('formularesponse');
1.104 bowersj2 537: &Apache::response::end_response();
1.89 albertel 538: } else {
539: $result.=&start_numericalresponse(@_);
540: }
541: return $result;
1.44 albertel 542: }
543:
544: sub end_formularesponse {
1.89 albertel 545: return end_numericalresponse(@_);
1.3 albertel 546: }
547:
1.1 albertel 548: 1;
1.3 albertel 549: __END__
1.89 albertel 550:
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