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openSUSE:12.2
perl-GD-Graph3d
GD-Graph3d-trim_miter.diff
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File GD-Graph3d-trim_miter.diff of Package perl-GD-Graph3d
--- GD-Graph3d-0.63/lib/GD/Graph/lines3d.pm.orig 2002-12-06 21:14:55.000000000 +0100 +++ GD-Graph3d-0.63/lib/GD/Graph/lines3d.pm 2005-03-03 16:08:02.570748909 +0100 @@ -47,6 +47,7 @@ # The depth of the line in their extrusion line_depth => 10, + trim_miter => 0, ); sub initialise() @@ -83,6 +84,12 @@ delete $args{$_}; next; }; + /^trim_miter$/ and do + { + $s->{trim_miter} = $args{$_}; + delete $args{$_}; + next; + }; } return $s->SUPER::set(%args); @@ -238,7 +245,7 @@ } # end if # Draw the line segment - $self->draw_line( $points_cache[$i - 1][$j], + my $poly_style = $self->draw_line( $points_cache[$i - 1][$j], $points_cache[$i][$j], $points_cache[$i + 1][$j], $type, @@ -256,6 +263,12 @@ } else { $g->filledPolygon( $poly, $dsci ); } # end if + + # Hmm, the if's in draw_line are much more elaborated + # than the one above. A direct copy does not look too bad. + # FIXME, 2005-03-003, jw@suse.de + $g->filledPolygon( $poly, $poly_style ); + $g->polygon( $poly, $self->{fgci} ); } # end if @@ -426,6 +439,23 @@ $this->{face}[2] = ($bn - $bt) / ($mt - $mn); } # end if $this->{face}[3] = $mt * $this->{face}[2] + $bt; + if ($self->{trim_miter}) + { + if (($mt > 1) && ($mn < -1)) + { + $this->{trim23}[2] = $xe + $lwxoff + $lwyoff; + $this->{trim23}[3] = $ye + $lwyoff - $lwxoff; + $this->{face}[2] = $xe + $lwxo2 - $lwyo2; + $this->{face}[3] = $ye + $lwyo2 + $lwxo2; + } + elsif (($mt < -1) && ($mn > 1)) + { + $this->{trim01}[0] = $xe - $lwxoff + $lwyoff; + $this->{trim01}[1] = $ye - $lwyoff - $lwxoff; + $this->{face}[0] = $xe - $lwxo2 - $lwyo2; + $this->{face}[1] = $ye - $lwyo2 + $lwxo2; + } + } } # end if @@ -462,6 +492,19 @@ } # end if $self->{graph}->polygon( $poly, $self->{fgci} ); + if ($this->{trim01}) + { + ## upper trim caps are always visible. lower trim caps never. + $poly = new GD::Polygon; + my $ld = $self->{line_depth}; + $poly->addPt($this->{trim01}[0] , $this->{trim01}[1] ); + $poly->addPt($this->{trim01}[0] + $ld, $this->{trim01}[1] - $ld); + $poly->addPt($this->{face}[0] + $ld, $this->{face}[1] - $ld); + $poly->addPt($this->{face}[0] , $this->{face}[1] ); + $self->{graph}->filledPolygon( $poly, $style ); + $self->{graph}->polygon( $poly, $self->{fgci} ); + } + # *** This paints dashed and dotted patterns on the faces of # the polygons. They don't look very good though. Would it # be better to extrude the style as well as the lines? @@ -472,13 +515,18 @@ # Make the face polygon $poly = new GD::Polygon; $poly->addPt( $prev->{face}[0], $prev->{face}[1] ); + $poly->addPt( $this->{trim01}[0], $this->{trim01}[1] ) if $this->{trim01}; $poly->addPt( $this->{face}[0], $this->{face}[1] ); $poly->addPt( $this->{face}[2], $this->{face}[3] ); + $poly->addPt( $this->{trim23}[2], $this->{trim23}[3] ) if $this->{trim23}; $poly->addPt( $prev->{face}[2], $prev->{face}[3] ); $self->{graph}->filledPolygon( $poly, $style ); $self->{graph}->polygon( $poly, $self->{fgci} ); +# $self->{graph}->arc($xe,$ye, 10,10, 0, 360, 1); # show centers for debugging. + return $style; + } # end draw line # ---------------------------------------------------------- --- GD-Graph3d-0.63/lib/GD/Graph3d.pm.orig 2002-12-06 21:14:16.000000000 +0100 +++ GD-Graph3d-0.63/lib/GD/Graph3d.pm 2005-03-03 16:18:17.138907917 +0100 @@ -106,6 +106,14 @@ users. You can disable the shading of lines and axes by specifiying a false value for this option. +=item trim_miter + +By default this is set to '0'. If line_width is large, typical zig-zag data +lines may appear to exaggerated, due to the width of the lines. +When trim_miter is set to '1', then acute-angled segments are cut back +(with an additional small rectangle on top) to extend only half a line_width +beyond the data points. + =back =back
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