--- loncom/homework/imageresponse.pm 2001/02/07 00:29:59 1.1 +++ loncom/homework/imageresponse.pm 2004/08/12 06:00:39 1.55 @@ -1,109 +1,650 @@ + # The LearningOnline Network with CAPA -# iimage click response style +# image click response style +# +# $Id: imageresponse.pm,v 1.55 2004/08/12 06:00:39 albertel Exp $ +# +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# +#FIXME LATER assumes multiple possible submissions but only one is possible +#currently package Apache::imageresponse; use strict; +use Image::Magick(); +use Apache::randomlylabel(); +use Apache::londefdef(); +use Apache::Constants qw(:common :http); +use Apache::lonlocal; -sub BEGIN { - &Apache::lonxml::register('Apache::imageresponse',('imageresponse')); +BEGIN { + &Apache::lonxml::register('Apache::imageresponse',('imageresponse')); } sub start_imageresponse { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - #when in a radiobutton response use these - &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle')); - my $id = &Apache::response::start_response($parstack,$safeeval); - return ''; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result; + #when in a radiobutton response use these + &Apache::lonxml::register('Apache::imageresponse', + ('foilgroup','foil','text','image','rectangle', + 'polygon','conceptgroup')); + push (@Apache::lonxml::namespace,'imageresponse'); + my $id = &Apache::response::start_response($parstack,$safeeval); + undef(%Apache::response::foilnames); + if ($target eq 'meta') { + $result=&Apache::response::meta_package_write('imageresponse'); + } elsif ($target eq 'analyze') { + my $part_id="$Apache::inputtags::part.$id"; + push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id); + } + return $result; } sub end_imageresponse { - &Apache::response::end_response; - return ''; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + &Apache::response::end_response; + pop @Apache::lonxml::namespace; + &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup')); + my $result; + if ($target eq 'edit') { $result=&Apache::edit::end_table(); } + undef(%Apache::response::foilnames); + return $result; } -%Apache::response::foilgroup={}; +%Apache::response::foilgroup=(); sub start_foilgroup { - %Apache::response::foilgroup={}; - return ''; + %Apache::response::foilgroup=(); + $Apache::imageresponse::conceptgroup=0; + &Apache::response::pushrandomnumber(); + return ''; +} + +sub getfoilcounts { + my ($parstack,$safeeval)=@_; + + my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2'); + # +1 since instructors will count from 1 + my $count = $#{ $Apache::response::foilgroup{'names'} }+1; + if (&Apache::response::showallfoils()) { $max=$count; } + return ($count,$max); +} + +sub whichfoils { + my ($max)=@_; + if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; } + my @names = @{ $Apache::response::foilgroup{'names'} }; + my @whichopt =(); + while ((($#whichopt+1) < $max) && ($#names > -1)) { + &Apache::lonxml::debug("Have $#whichopt max is $max"); + my $aopt; + if (&Apache::response::showallfoils()) { + $aopt=0; + } else { + $aopt=int(&Math::Random::random_uniform() * ($#names+1)); + } + &Apache::lonxml::debug("From $#names elms, picking $aopt"); + $aopt=splice(@names,$aopt,1); + &Apache::lonxml::debug("Picked $aopt"); + push (@whichopt,$aopt); + } + return @whichopt; } -sub setrandomnumber { - my $rndseed=&Apache::lonnet::rndseed(); - $rndseed=unpack("%32i",$rndseed); - $rndseed=$rndseed - +&Apache::lonnet::numval($Apache::inputtags::part) - +&Apache::lonnet::numval($Apache::inputtags::response['-1']); - srand($rndseed); - return ''; +sub prep_image { + my ($image,$mode,$name)=@_; + my $part=$Apache::inputtags::part; + my $respid=$Apache::inputtags::response['-1']; + my $id=&Apache::loncommon::get_cgi_id(); + my (%x,$i); + $x{"cgi.$id.BGIMG"}=&Apache::lonnet::escape($image); + my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"}); + #draws 2 xs on the image at the clicked location + #one in white and then one in red on top of the one in white + if (defined($x) && $x=~/\S/ && defined($y) && $y =~/\S/) { + my $length = 6; + my $width = 1; + my $extrawidth = 2; + my $xmin=($x-$length); + my $xmax=($x+$length); + my $ymin=($y-$length); + my $ymax=($y+$length); + + $x{"cgi.$id.OBJTYPE"}.='LINE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax), + "FFFFFF",($width+$extrawidth))); + $x{"cgi.$id.OBJTYPE"}.='LINE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin), + "FFFFFF",($width+$extrawidth))); + $x{"cgi.$id.OBJTYPE"}.='LINE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax), + "FF0000",($width))); + $x{"cgi.$id.OBJTYPE"}.='LINE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin), + "FF0000",($width))); + } + if ($mode eq 'answer') { + my $width = 1; + my $extrawidth = 2; + my @areas = @{ $Apache::response::foilgroup{"$name.area"} }; + foreach my $area (@areas) { + if ($area=~/^rectangle:/) { + $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + my ($x1,$y1,$x2,$y2)= + ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/); + $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF", + ($width+$extrawidth))); + $x{"cgi.$id.OBJTYPE"}.='RECTANGLE:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width)); + } elsif ($area=~/^polygon:(.*)/) { + $x{"cgi.$id.OBJTYPE"}.='POLYGON:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth))); + $x{"cgi.$id.OBJEXTRA$i"}=$1; + $x{"cgi.$id.OBJTYPE"}.='POLYGON:'; + $i=$x{"cgi.$id.OBJCOUNT"}++; + $x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width)); + $x{"cgi.$id.OBJEXTRA$i"}=$1; + } + } + } + &Apache::lonnet::appenv(%x); + return $id; +} + +sub displayfoils { + my ($target,@whichopt) = @_; + my $result =''; + my $name; + my $temp=1; + foreach $name (@whichopt) { + $result.=$Apache::response::foilgroup{"$name.text"}; + &Apache::lonxml::debug("Text is $result"); + if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="
\n";} + my $image=$Apache::response::foilgroup{"$name.image"}; + &Apache::lonxml::debug("image is $image"); + if ( $target eq 'web' && $image !~ /^http:/ ) { + $image=&clean_up_image($image); + } + &Apache::lonxml::debug("image is $image"); + if ( &Apache::response::show_answer() ) { + if ($target eq 'tex') { + $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n"; + } else { + my $token=&prep_image($image,'answer',$name); + $result.="
\n"; + } + } else { + if ($target eq 'tex') { + $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n"; + } else { + my $id=$Apache::inputtags::response['-1']; + my $token=&prep_image($image); + my $temp=1; + $result.="
\n"; + } + } + $temp++; + } + return $result; +} + +sub clean_up_image { + my ($image)=@_; + if ($image =~ /\s*$max) { $count=$max } + &Apache::lonxml::debug("Count is $count from $max"); + @whichopt = &whichfoils($max); + if ($target eq 'web' || $target eq 'tex') { + $result=&displayfoils($target,@whichopt); + } elsif ($target eq 'grade') { + if ( defined $ENV{'form.submitted'}) { &gradefoils(@whichopt); } + } elsif ( $target eq 'analyze') { + &Apache::response::analyze_store_foilgroup(\@whichopt, + ['text','image','area']); + } + } elsif ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + &Apache::response::poprandomnumber(); + return $result; } sub start_conceptgroup { + $Apache::imageresponse::conceptgroup=1; + %Apache::response::conceptgroup=(); + return ''; } sub end_conceptgroup { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + $Apache::imageresponse::conceptgroup=0; + my $result; + if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || + $target eq 'analyze') { + &Apache::response::pick_foil_for_concept($target, + ['area','text','image'], + \%Apache::hint::image, + $parstack,$safeeval); + } elsif ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + +sub insert_foil { + return ' + + + + + +'; } $Apache::imageresponse::curname=''; sub start_foil { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - if ($target eq 'web' || $target eq 'grade') { - my $args =''; - if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } - my $name = &Apache::run::run("{$args;".'return $name}',$safeeval); - push @{ $Apache::response::foilgroup{'names'} }, $name; - $Apache::imageresponse::curname=$name; - } - return ''; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || + $target eq 'analyze') { + my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval); + if ($name eq '') { $name=$Apache::lonxml::curdepth; } + if (defined($Apache::response::foilnames{$name})) { + &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique.",$name)); + } + $Apache::response::foilnames{$name}++; + if ( $Apache::imageresponse::conceptgroup + && !&Apache::response::showallfoils()) { + push(@{ $Apache::response::conceptgroup{'names'} }, $name); + } else { + push(@{ $Apache::response::foilgroup{'names'} }, $name); + } + $Apache::imageresponse::curname=$name; + } + return ''; } sub end_foil { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - return ''; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; } sub start_text { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - if ($target eq 'web') { - $Apache::lonxml::redirection--; - } - return ''; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { + &Apache::lonxml::startredirection; + } elsif ($target eq 'edit') { + my $descr=&Apache::lonxml::get_all_text('/text',$parser); + $result=&Apache::edit::tag_start($target,$token,'Task Description'). + &Apache::edit::editfield($token->[1],$descr,'Text',60,2). + &Apache::edit::end_row(); + } elsif ($target eq "modified") { + $result=$token->[4].&Apache::edit::modifiedfield('/text',$parser); + } + return $result; } sub end_text { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - if ($target eq 'web') { - my $name = $Apache::imageresponse::curname; - $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack; - if ($target eq 'web' ) { - $Apache::lonxml::redirection++; - if ($Apache::lonxml::redirection == 1) { - $Apache::lonxml::outputstack=''; - } + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result; + if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { + my $name = $Apache::imageresponse::curname; + if ( $Apache::imageresponse::conceptgroup + && !&Apache::response::showallfoils() ) { + $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection; + } else { + $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection; + } + } elsif ($target eq 'edit') { + $result=&Apache::edit::end_table(); } - } - return ''; + return $result; } sub start_image { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; - + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { + &Apache::lonxml::startredirection; + } elsif ($target eq 'edit') { + my $bgimg=&Apache::lonxml::get_all_text('/image',$parser); + $Apache::edit::bgimgsrc=$bgimg; + $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth; + + $result=&Apache::edit::tag_start($target,$token,'Clickable Image'). + &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40); + $result.=&Apache::edit::browse(undef,'textnode').' '; + $result.=&Apache::edit::search(undef,'textnode'). + &Apache::edit::end_row(); + } elsif ($target eq "modified") { + $result=$token->[4].&Apache::edit::modifiedfield('/image',$parser); + } + return $result; } sub end_image { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result; + my $name = $Apache::imageresponse::curname; + if ($target eq 'web') { + my $image = &Apache::lonxml::endredirection; + &Apache::lonxml::debug("original image is $image"); + if ( $Apache::imageresponse::conceptgroup + && !&Apache::response::showallfoils()) { + $Apache::response::conceptgroup{"$name.image"} = $image; + } else { + $Apache::response::foilgroup{"$name.image"} = $image; + } + } elsif ($target eq 'analyze') { + my $image = &Apache::lonxml::endredirection; + if ( $Apache::imageresponse::conceptgroup + && !&Apache::response::showallfoils()) { + $Apache::response::conceptgroup{"$name.image"} = $image; + } else { + $Apache::response::foilgroup{"$name.image"} = $image; + } + } elsif ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } elsif ($target eq 'tex') { + my $src = &Apache::lonxml::endredirection; + $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); + my $width_param = ''; + my $height_param = ''; + my $scaling = .3; + my $image = Image::Magick->new; + my $current_figure = $image->Read($src); + $width_param = $image->Get('width') * $scaling;; + $height_param = $image->Get('height') * $scaling;; + undef $image; + my $epssrc = $src; + $epssrc =~ s/(\.gif|\.jpg)$/\.eps/i; + if (not -e $epssrc) { + my $localfile = $epssrc; + $localfile =~ s/.*(\/res)/$1/; + my $file; + my $path; + if ($localfile =~ m!(.*)/([^/]*)$!) { + $file = $2; + $path = $1.'/'; + } + my $signal_eps = 0; + my @content_directory = &Apache::lonnet::dirlist($path); + for (my $iy=0;$iy<=$#content_directory;$iy++) { + my @tempo_array = split(/&/,$content_directory[$iy]); + $content_directory[$iy] = $tempo_array[0]; + if ($file eq $tempo_array[0]) { + $signal_eps = 1; + last; + } + } + if ($signal_eps) { + my $eps_file = &Apache::lonnet::getfile($localfile); + } else { + $localfile = $src; + $localfile =~ s/.*(\/res)/$1/; + my $as = &Apache::lonnet::getfile($src); + } + } + my $file; + my $path; + if ($src =~ m!(.*)/([^/]*)$!) { + $file = $2; + $path = $1.'/'; + } + my $newsrc = $src; + $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i; + $file=~s/(\.gif|\.jpg|\.jpeg)$/\.eps/i; + #do we have any specified size of the picture? + my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); + my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); + my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval); + if ($TeXwidth ne '') { + $width_param = $TeXwidth; + } elsif ($TeXheight ne '') { + $width_param = $TeXheight/$height_param*$width_param; + } elsif ($width ne '') { + $width_param = $width*$scaling; + } + $width_param=&Apache::randomlabel::adjust_textwidth($width_param); + #where can we find the picture? + if (-e $newsrc) { + if ($path) { + $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; + } + } else { + #care about eps dynamical generation + $Apache::response::foilgroup{"$name.image"}='\vskip 0 mm '.&Apache::londefdef::eps_generation($src,$file,$width_param); + } + } + return $result; } sub start_rectangle { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || + $target eq 'analyze') { + &Apache::lonxml::startredirection; + } elsif ($target eq 'edit') { + my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser); + $result=&Apache::edit::tag_start($target,$token,'Rectangle'). + &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40). + &Apache::edit::entercoord(undef,'textnode',undef,undef,'box'). + &Apache::edit::end_row(); + } elsif ($target eq "modified") { + &Apache::edit::deletecoorddata(); + $result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser); + } + return $result; +} + +sub grade_rectangle { + my ($spec,$x,$y) = @_; + &Apache::lonxml::debug("Spec is $spec"); + my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/); + &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2"); + if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } + if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } + if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) { + return 'APPROX_ANS'; + } + return 'INCORRECT'; } sub end_rectangle { - my ($target,$token,$parstack,$parser,$safeeval,$style)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result; + if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || + $target eq 'analyze') { + my $name = $Apache::imageresponse::curname; + my $area = &Apache::lonxml::endredirection; + $area=~s/\s//g; + &Apache::lonxml::debug("out is $area for $name"); + if ( $Apache::imageresponse::conceptgroup + && !&Apache::response::showallfoils()) { + push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area"; + } else { + push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area"; + } + } elsif ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + +sub start_polygon { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || + $target eq 'analyze') { + &Apache::lonxml::startredirection; + } elsif ($target eq 'edit') { + my $coords=&Apache::lonxml::get_all_text('/polygon',$parser); + $result=&Apache::edit::tag_start($target,$token,'Polygon'). + &Apache::edit::editline($token->[1],$coords,'Coordinate list',40). + &Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon'). + &Apache::edit::end_row(); + } elsif ($target eq "modified") { + $result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser); + } + return $result; +} + +sub grade_polygon { + my ($spec,$x,$y) = @_; + &Apache::lonxml::debug("Spec is $spec"); + $spec=~s/^polygon://; + my @polygon; + foreach my $coord (split('-',$spec)) { + my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); + &Apache::lonxml::debug("x $x y $y"); + push @polygon, {'x'=>$x,'y'=>$y}; + } + #make end point start point + push @polygon, $polygon[0]; + # cribbed from + # http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm + my $crossing = 0; # the crossing number counter + + # loop through all edges of the polygon + for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1] + if ((($polygon[$i]->{'y'} <= $y) + && ($polygon[$i+1]->{'y'} > $y)) # an upward crossing + || + (($polygon[$i]->{'y'} > $y) + && ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing + # compute the actual edge-ray intersect x-coordinate + my $vt = ($y - $polygon[$i]->{'y'}) + / ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'}); + if ($x < $polygon[$i]->{'x'} + $vt * + ($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x