version 1.40, 2003/11/10 23:29:27
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version 1.47, 2004/02/11 21:59:34
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# image click response style |
# image click response style |
# |
# |
Line 32 package Apache::imageresponse;
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Line 33 package Apache::imageresponse;
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use strict; |
use strict; |
use Image::Magick; |
use Image::Magick; |
use Apache::randomlylabel; |
use Apache::randomlylabel; |
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use Apache::londefdef; |
use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
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BEGIN { |
BEGIN { |
Line 42 sub start_imageresponse {
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Line 44 sub start_imageresponse {
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result; |
my $result; |
#when in a radiobutton response use these |
#when in a radiobutton response use these |
&Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup')); |
&Apache::lonxml::register('Apache::imageresponse', |
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('foilgroup','foil','text','image','rectangle', |
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'polygon','conceptgroup')); |
push (@Apache::lonxml::namespace,'imageresponse'); |
push (@Apache::lonxml::namespace,'imageresponse'); |
my $id = &Apache::response::start_response($parstack,$safeeval); |
my $id = &Apache::response::start_response($parstack,$safeeval); |
if ($target eq 'meta') { |
if ($target eq 'meta') { |
Line 104 sub whichfoils {
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Line 108 sub whichfoils {
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} |
} |
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sub prep_image { |
sub prep_image { |
my ($image)=@_; |
my ($image,$mode,$name)=@_; |
my $part=$Apache::inputtags::part; |
my $part=$Apache::inputtags::part; |
my $id=$Apache::inputtags::response['-1']; |
my $respid=$Apache::inputtags::response['-1']; |
my $token=$Apache::lonxml::curdepth.'_'.$$; |
my $id=&Apache::loncommon::get_cgi_id(); |
my $args="BGIMG=".$image; |
my %x; |
&Apache::lonxml::debug("args is $args image is $image"); |
$x{"cgi.$id.BGIMG"}=&Apache::lonnet::escape($image); |
my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$id.submission"}); |
my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"}); |
#draws 2 xs on the image at the clicked location |
#draws 2 xs on the image at the clicked location |
#one in white and then one in red on top of the one in white |
#one in white and then one in red on top of the one in white |
if (defined($x) && defined($y)) { |
if (defined($x) && defined($y)) { |
$args.="&LINECOUNT=4"; |
$x{"cgi.$id.LINECOUNT"}=4; |
my $length = 6; |
my $length = 6; |
my $width = 1; |
my $width = 1; |
my $extrawidth = 2; |
my $extrawidth = 2; |
$args.="&LINEW0=".($width+$extrawidth); |
$x{"cgi.$id.LINE0"}= |
$args.="&LINEC0=FFFFFF"; |
join(':',(($x-$length),($y-$length),($x+$length),($y+$length), |
$args.="&LINEX10=".($x-$length)."&LINEY10=".($y-$length); |
"FFFFFF",($width+$extrawidth))); |
$args.="&LINEX20=".($x+$length)."&LINEY20=".($y+$length); |
$x{"cgi.$id.LINE1"}= |
$args.="&LINEW1=".($width+$extrawidth); |
join(':',(($x-$length),($y+$length),($x+$length),($y-$length), |
$args.="&LINEC1=FFFFFF"; |
"FFFFFF",($width+$extrawidth))); |
$args.="&LINEX11=".($x-$length)."&LINEY11=".($y+$length); |
$x{"cgi.$id.LINE2"}= |
$args.="&LINEX21=".($x+$length)."&LINEY21=".($y-$length); |
join(':',(($x-$length),($y-$length),($x+$length),($y+$length), |
$args.="&LINEW2=$width"; |
"FF0000",($width))); |
$args.="&LINEC2=FF0000"; |
$x{"cgi.$id.LINE3"}= |
$args.="&LINEX12=".($x-$length)."&LINEY12=".($y-$length); |
join(':',(($x-$length),($y+$length),($x+$length),($y-$length), |
$args.="&LINEX22=".($x+$length)."&LINEY22=".($y+$length); |
"FF0000",($width))); |
$args.="&LINEW3=$width"; |
} |
$args.="&LINEC3=FF0000"; |
if ($mode eq 'answer') { |
$args.="&LINEX13=".($x-$length)."&LINEY13=".($y+$length); |
my $width = 1; |
$args.="&LINEX23=".($x+$length)."&LINEY23=".($y-$length); |
my $extrawidth = 2; |
} |
my @areas = @{ $Apache::response::foilgroup{"$name.area"} }; |
&Apache::lonxml::debug("args is $args image is $image"); |
foreach my $area (@areas) { |
&Apache::lonnet::appenv(("imagerequest.$token"=> |
if ($area=~/^rectangle:/) { |
&Apache::lonnet::escape($args))); |
my ($x1,$y1,$x2,$y2)= |
return $token; |
($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/); |
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my $i=$x{"cgi.$id.BOXCOUNT"}++; |
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$x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF", |
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($width+$extrawidth))); |
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$i=$x{"cgi.$id.BOXCOUNT"}++; |
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$x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width)); |
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} elsif ($area=~/^polygon:(.*)/) { |
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my $i=$x{"cgi.$id.POLYCOUNT"}++; |
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$x{"cgi.$id.POLYOPT$i"}=join(':',("FFFFFF",($width+$extrawidth))); |
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$x{"cgi.$id.POLY$i"}=$1; |
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$i=$x{"cgi.$id.POLYCOUNT"}++; |
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$x{"cgi.$id.POLYOPT$i"}=join(':',("00FF00",$width)); |
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$x{"cgi.$id.POLY$i"}=$1; |
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} |
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} |
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} |
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&Apache::lonnet::appenv(%x); |
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return $id; |
} |
} |
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sub displayfoils { |
sub displayfoils { |
Line 153 sub displayfoils {
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Line 174 sub displayfoils {
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my $image=$Apache::response::foilgroup{"$name.image"}; |
my $image=$Apache::response::foilgroup{"$name.image"}; |
&Apache::lonxml::debug("image is $image"); |
&Apache::lonxml::debug("image is $image"); |
if ( $target eq 'web' && $image !~ /^http:/ ) { |
if ( $target eq 'web' && $image !~ /^http:/ ) { |
$image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image); |
$image=&clean_up_image($image); |
if (&Apache::lonnet::repcopy($image) ne OK) { |
} |
$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif'; |
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} |
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} |
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&Apache::lonxml::debug("image is $image"); |
&Apache::lonxml::debug("image is $image"); |
if ( &Apache::response::show_answer() ) { |
if ( &Apache::response::show_answer() ) { |
if ($target eq 'tex') { |
if ($target eq 'tex') { |
$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n"; |
$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n"; |
} else { |
} else { |
my $token=&prep_image($image); |
my $token=&prep_image($image,'answer',$name); |
$result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n"; |
$result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n"; |
} |
} |
} else { |
} else { |
Line 182 sub displayfoils {
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Line 200 sub displayfoils {
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return $result; |
return $result; |
} |
} |
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sub clean_up_image { |
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my ($image)=@_; |
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if ($image =~ /\s*<img\s*/) { |
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($image) = ($image =~ /src\s*=\s*\"([^\"]+)\"/i); |
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if ($image !~ /^http:/) { |
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$image=&Apache::lonnet::hreflocation('',$image); |
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} |
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if (!$image) { |
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$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif'; |
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} |
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} else { |
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$image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image); |
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if (&Apache::lonnet::repcopy($image) ne OK) { |
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$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif'; |
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} |
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} |
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return $image; |
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} |
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sub gradefoils { |
sub gradefoils { |
my (@whichopt) = @_; |
my (@whichopt) = @_; |
my $x; |
my $x; |
Line 203 sub gradefoils {
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Line 240 sub gradefoils {
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&Apache::lonxml::debug("Area of type $1"); |
&Apache::lonxml::debug("Area of type $1"); |
if ($1 eq 'rectangle') { |
if ($1 eq 'rectangle') { |
$grade=&grade_rectangle($area,$x,$y); |
$grade=&grade_rectangle($area,$x,$y); |
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} elsif ($1 eq 'polygon') { |
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$grade=&grade_polygon($area,$x,$y); |
} else { |
} else { |
&Apache::lonxml::error("Unknown area style $area"); |
&Apache::lonxml::error("Unknown area style $area"); |
} |
} |
Line 447 sub end_image {
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Line 486 sub end_image {
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$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; |
$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; |
} |
} |
} else { |
} else { |
my $temp_file; |
#care about eps dynamical generation |
my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat"; |
$Apache::response::foilgroup{"$name.image"}='\vskip 0 mm '.&Apache::londefdef::eps_generation($src,$file,$width_param); |
$temp_file = Apache::File->new('>>'.$filename); |
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print $temp_file "$src\n"; |
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$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; |
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} |
} |
} |
} |
return $result; |
return $result; |
Line 467 sub start_rectangle {
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Line 503 sub start_rectangle {
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my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser); |
my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser); |
$result=&Apache::edit::tag_start($target,$token,'Rectangle'). |
$result=&Apache::edit::tag_start($target,$token,'Rectangle'). |
&Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40). |
&Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40). |
&Apache::edit::entercoordpair(undef,'textnode'). |
&Apache::edit::entercoord(undef,'textnode',undef,undef,'box'). |
&Apache::edit::end_row(); |
&Apache::edit::end_row(); |
} elsif ($target eq "modified") { |
} elsif ($target eq "modified") { |
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&Apache::edit::deletecoorddata(); |
$result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser); |
$result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser); |
} |
} |
return $result; |
return $result; |
Line 478 sub start_rectangle {
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Line 515 sub start_rectangle {
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sub grade_rectangle { |
sub grade_rectangle { |
my ($spec,$x,$y) = @_; |
my ($spec,$x,$y) = @_; |
&Apache::lonxml::debug("Spec is $spec"); |
&Apache::lonxml::debug("Spec is $spec"); |
$spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/; |
my ($x1,$y1,$x2,$y2)=($spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/); |
my $x1=$1; |
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my $y1=$2; |
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my $x2=$3; |
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my $y2=$4; |
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&Apache::lonxml::debug("Point $x1,$y1,$x2,$y2"); |
&Apache::lonxml::debug("Point $x1,$y1,$x2,$y2"); |
if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } |
if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } |
if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } |
if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } |
Line 508 sub end_rectangle {
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Line 541 sub end_rectangle {
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} |
} |
} elsif ($target eq 'edit') { |
} elsif ($target eq 'edit') { |
$result=&Apache::edit::end_table(); |
$result=&Apache::edit::end_table(); |
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} |
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return $result; |
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} |
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sub start_polygon { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
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my $result=''; |
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if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || |
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$target eq 'analyze') { |
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&Apache::lonxml::startredirection; |
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} elsif ($target eq 'edit') { |
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my $coords=&Apache::lonxml::get_all_text('/polygon',$parser); |
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$result=&Apache::edit::tag_start($target,$token,'Polygon'). |
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&Apache::edit::editline($token->[1],$coords,'Coordinate list',40). |
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&Apache::edit::entercoord(undef,'textnode',undef,undef,'polygon'). |
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&Apache::edit::end_row(); |
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} elsif ($target eq "modified") { |
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$result=$token->[4].&Apache::edit::modifiedfield('/polygon',$parser); |
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} |
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return $result; |
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} |
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sub grade_polygon { |
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my ($spec,$x,$y) = @_; |
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&Apache::lonxml::debug("Spec is $spec"); |
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$spec=~s/^polygon://; |
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my @polygon; |
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foreach my $coord (split('-',$spec)) { |
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my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); |
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&Apache::lonxml::debug("x $x y $y"); |
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push @polygon, {'x'=>$x,'y'=>$y}; |
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} |
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#make end point start point |
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push @polygon, $polygon[0]; |
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# cribbed from |
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# http://geometryalgorithms.com/Archive/algorithm_0103/algorithm_0103.htm |
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my $crossing = 0; # the crossing number counter |
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# loop through all edges of the polygon |
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for (my $i=0; $i<$#polygon; $i++) { # edge from V[i] to V[i+1] |
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if ((($polygon[$i]->{'y'} <= $y) |
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&& ($polygon[$i+1]->{'y'} > $y)) # an upward crossing |
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|| |
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(($polygon[$i]->{'y'} > $y) |
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&& ($polygon[$i+1]->{'y'} <= $y))) { # a downward crossing |
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# compute the actual edge-ray intersect x-coordinate |
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my $vt = ($y - $polygon[$i]->{'y'}) |
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/ ($polygon[$i+1]->{'y'} - $polygon[$i]->{'y'}); |
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if ($x < $polygon[$i]->{'x'} + $vt * |
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($polygon[$i+1]->{'x'} - $polygon[$i]->{'x'})) { # x<intersect |
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$crossing++; # a valid crossing of y=P.y right of P.x |
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} |
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} |
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} |
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# 0 if even (out), and 1 if odd (in) |
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if ($crossing%2) { |
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return 'APPROX_ANS'; |
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} else { |
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return 'INCORRECT'; |
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} |
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} |
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sub end_polygon { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
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my $result; |
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if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' || |
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$target eq 'analyze') { |
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my $name = $Apache::imageresponse::curname; |
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my $area = &Apache::lonxml::endredirection; |
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&Apache::lonxml::debug("out is $area for $name"); |
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if ( $Apache::imageresponse::conceptgroup |
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&& !&Apache::response::showallfoils()) { |
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push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area"; |
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} else { |
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push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area"; |
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} |
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} elsif ($target eq 'edit') { |
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$result=&Apache::edit::end_table(); |
} |
} |
return $result; |
return $result; |
} |
} |