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# Copyright (c) 1997-2024
# Ewgenij Gawrilow, Michael Joswig, and the polymake team
# Technische Universität Berlin, Germany
# https://polymake.org
#
# This program 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, or (at your option) any
# later version: http://www.gnu.org/licenses/gpl.txt.
#
# This program 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.
#-------------------------------------------------------------------------------
INCLUDE
webbrowser.rules
package PmSvg;
CREDIT SVG
Generated using the Perl SVG Module
by Ronan Oger
CONFIGURE {
eval("require SVG;");
if ($@) {
die "Could not load perl SVG module: $@\n";
} else {
return 1;
}
}
# height of paper sheet, in postscript points (1/72"); default = DIN A4 sheet
custom $Hpaper=841;
# width of paper sheet, in postscript points (1/72"); default = DIN A4 sheet
custom $Wpaper=595;
# vertical margin, in postscript points (1/72")
custom $Hmargin=50;
# horizontal margin, in postscript points (1/72")
custom $Wmargin=30;
# text labels
custom $fontname="Times-Roman";
# text labels
custom $fontsize=10;
# for circles representing single geometric points
custom $point_radius=4;
# normal line width
custom $line_width=1;
# spacing between points (lines) and labels
custom $text_spacing=3;
# for arrows in directed graphs
custom $arrowheadlength=15;
# for arrows in directed graphs
custom $arrowheadwidth=10;
# for arrows in directed graphs
custom $arrowheadoffset=2*$arrowheadlength;
# for arrows in directed graphs
custom @arrowheadcolor=(0,0,0);
###########################################################################################
#
# Basic class implementing the required back-end interface.
#
package PmSvg::Viewer;
require PmSvg;
use BackgroundViewer;
use Polymake::Struct [ '@ISA' => 'SimpleViewer' ];
sub file_suffix { ".svg" }
sub new {
my $www = eval { return $Visual::webbrowser };
if ($@ || !defined($www)) {
die <<'.';
no Svg viewer configured: please specify the output File option
or call reconfigure("common::webbrowser.rules");
.
}
my $self=&_new;
my $temp_file=new Tempfile;
$self->tempfile = $temp_file;
$self;
}
sub command {
my ($self, $filename)=@_;
"$Visual::webbrowser $filename";
}
sub new_drawing {
my ($self, $title)=@_;
$self->SUPER::new_drawing($title);
$self;
}
sub append {
my $self=shift;
$self->graphics->append(@_);
}
# @category Visualization
# Create a Svg drawing and show it with your favorite viewer.
label svg
global_method svg.geometry: draw(Visual::PointSet, @) {
my ($self, $P)=@_;
$self->append(PmSvg::PointSet->new($P));
}
global_method svg.geometry: draw(Visual::Wire, @) {
my ($self, $G)=@_;
$self->append(PmSvg::Wire->new($G));
}
global_method svg.geometry: draw(Visual::Polygon, @) {
my ($self, $P)=@_;
$self->append(PmSvg::Solid->new($P));
}
global_method svg.geometry: draw(Visual::Polygons, @) {
my ($self, $P)=@_;
$self->append(PmSvg::Solid->new($P));
}
###########################################################################################
#
# Writes a SVG file without rendering
#
package PmSvg::File::Writer;
import Visual::FileWriter;
sub file_suffix { ".svg" }
sub new_drawing {
my ($self, $title)=@_;
$self->title=$title;
$self;
}
sub DESTROY { }
###########################################################################################
package application;
# @category Visualization
# Create a Svg drawing with the given visual objects.
#
# @param Visual::Object vis_obj ... objects to draw
#
# @option [complete file] String File "filename" or "AUTO"
# Store the drawing in a file without starting the viewer.
# The ''.svg'' suffix is automatically added to the file name.
#
# Specify //AUTO// if you want the filename be automatically derived
# from the drawing title.
#
# You can also use any expression allowed for the ''open'' function,
# including "-" for terminal output, "&HANDLE" for an already opened file handle,
# or "| program" for a pipe.
user_function svg(Visual::Object+, { File => undef }) {
visualize_explicit(@_, "PmSvg");
}
# Local Variables:
# mode: perl
# cperl-indent-level:3
# End:
|
