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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.
#-------------------------------------------------------------------------------
require MetapostGraph;
# @category Visualization
# Produce a MetaPost input file with the given drawing.
label metapost
package Metapost::File::Writer;
import Visual::FileWriter(multiple => 1);
sub file_suffix { ".mp" }
global_method metapost.geometry: draw(Visual::PointSet, @) {
my ($self, $PointSet)=@_;
$self->append(new Metapost::Element($PointSet));
}
global_method metapost.graph: draw(Visual::Graph, @) {
my ($self, $Graph)=@_;
$self->append(new Metapost::Graph($Graph));
}
global_method metapost.lattice: draw(Visual::Lattice) {
my ($self, $Lattice)=@_;
$self->append(new Metapost::Lattice($Lattice));
}
package application;
# @category Visualization
# Produce a MetaPost input file with given visual objects.
# @param Visual::Object vis_obj ... objects to display
#
# @option [complete file] String File "filename" or "AUTO"
# The MetaPost description always has to be stored in a file, there is no interactive viewer for this
# kind of visualization.
#
# For the file name you can use any expression allowed for the ''open'' function,
# including "-" for terminal output, "&HANDLE" for an already opened file handle,
# or "| program" for a pipe. Real file names are automatically completed with the ''.mp'' suffix if needed.
#
# The default setting "AUTO" lets the file name be derived from the drawing title.
# The automatically generated file name is displayed in the verbose mode.
# @example [nocompare] The following prints a metapost description of the complete graph with 3 nodes in the console:
# > metapost(complete(3)->VISUAL,File=>"-");
user_function metapost(Visual::Object+, { File => "AUTO" }) {
visualize_explicit(@_, "Metapost");
}
# Local Variables:
# mode: perl
# c-basic-offset:3
# End:
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