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Diff for /loncom/homework/imageresponse.pm between versions 1.42.2.1 and 1.43

version 1.42.2.1, 2004/01/15 22:25:31 version 1.43, 2004/01/09 23:22:19
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 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # image click response style  # image click response style
 #  #
Line 42  sub start_imageresponse { Line 43  sub start_imageresponse {
     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',
         ('foilgroup','foil','text','image','rectangle',
          '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 136  sub prep_image { Line 139  sub prep_image {
  my $extrawidth = 2;   my $extrawidth = 2;
  my @areas = @{ $Apache::response::foilgroup{"$name.area"} };   my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
  foreach my $area (@areas) {   foreach my $area (@areas) {
     my ($x1,$y1,$x2,$y2)=      if ($area=~/^rectangle:/) {
  ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);   my ($x1,$y1,$x2,$y2)=
     my $i=$x{"cgi.$id.BOXCOUNT"}++;      ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
     $x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",   my $i=$x{"cgi.$id.BOXCOUNT"}++;
   ($width+$extrawidth)));   $x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
     $i=$x{"cgi.$id.BOXCOUNT"}++;        ($width+$extrawidth)));
     $x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));   $i=$x{"cgi.$id.BOXCOUNT"}++;
    $x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
       } elsif ($area=~/^polygon:(.*)/) {
    my $i=$x{"cgi.$id.POLYCOUNT"}++;
    $x{"cgi.$id.POLYOPT$i"}=join(':',("FFFFFF",($width+$extrawidth)));
    $x{"cgi.$id.POLY$i"}=$1;
    $i=$x{"cgi.$id.POLYCOUNT"}++;
    $x{"cgi.$id.POLYOPT$i"}=join(':',("00FF00",$width));
    $x{"cgi.$id.POLY$i"}=$1;
       }
  }   }
     }      }
     &Apache::lonnet::appenv(%x);      &Apache::lonnet::appenv(%x);
Line 211  sub gradefoils { Line 223  sub gradefoils {
  &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);
    } elsif ($1 eq 'polygon') {
       $grade=&grade_polygon($area,$x,$y);
  } else {   } else {
     &Apache::lonxml::error("Unknown area style $area");      &Apache::lonxml::error("Unknown area style $area");
  }   }
Line 459  sub end_image { Line 473  sub end_image {
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";      my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
     $temp_file = Apache::File->new('>>'.$filename);       $temp_file = Apache::File->new('>>'.$filename); 
     print $temp_file "$src\n";      print $temp_file "$src\n";
     $newsrc=~s/\/home\/httpd\/html\/res//;      $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
     $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;  
     $newsrc=~s/\/\.\//\//;  
     $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;  
     $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';  
  }   }
     }       } 
     return $result;      return $result;
Line 490  sub start_rectangle { Line 500  sub start_rectangle {
 sub grade_rectangle {  sub grade_rectangle {
     my ($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;  
     my $y1=$2;  
     my $x2=$3;  
     my $y2=$4;  
     &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 520  sub end_rectangle { Line 526  sub end_rectangle {
  }   }
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result=&Apache::edit::end_table();   $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],$coords,'Coordinate list',40).
       &Apache::edit::entercoordpolygon(undef,'textnode').
       &Apache::edit::end_row();
       } elsif ($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<intersect
                   $crossing++;   # a valid crossing of y=P.y right of P.x
       }
    }
       }
   
       # 0 if even (out), and 1 if odd (in)
       if ($crossing%2) {
    return 'APPROX_ANS';
       } else {
    return 'INCORRECT';
       }
   }
   
   sub end_polygon {
       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;
    &Apache::lonxml::debug("out is $area for $name");
    if ( $Apache::imageresponse::conceptgroup
        && !&Apache::response::showallfoils()) {
       push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
    } else {
       push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::end_table();
     }      }
     return $result;      return $result;
 }  }
Removed from v.1.42.2.1  
changed lines
  Added in v.1.43

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