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# Copyright (c) 1997-2015
# Ewgenij Gawrilow, Michael Joswig (Technische Universitaet Berlin, Germany)
# http://www.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.
#-------------------------------------------------------------------------------
package ThreeJS;
CREDIT threejs
Three.js is a lightweight cross-browser JavaScript library/API used to create and display animated 3D computer graphics on a Web browser.
See http://github.com/mrdoob for the source code.
# webbrowser
custom $webbrowser;
CONFIGURE_OPT {
find_program($webbrowser, qw( sensible-browser xdg-open chrome safari firefox ), { prompt => "the web browser" });
}
package ThreeJS::default;
# background color
custom @bgColor = (1, 1, 1);
# background opacity
custom $bgOpacity = 1;
# coordinates of the viewpoint
custom @view_point = (0, 0, 5);
# coordinates of a point on the view axis: default is the origin
custom @view_direction = (0, 0, 0);
# camera orientation: default is y-axis towards zenith
custom @view_up = (0, 1, 0);
# scaling factor
custom $scale = 1;
# camera field of view angle
custom $fov = 75;
# camera near plane
custom $near_plane = .1;
# camera far plane
custom $far_plane = 1000;
package ThreeJS::Viewer;
use ThreeJS;
use BackgroundViewer;
use Visual::Transformation;
# The default behavior is to produce an html output, then open it in a web browser.
use Polymake::Struct [ '@ISA' => 'SimpleViewer' ];
sub file_suffix { ".html" }
sub new {
unless (defined($webbrowser)) {
die <<'.';
requires web browser;
please specify the output File option or call reconfigure("common::threejs.rules");
.
}
my $self = &_new;
$self->tempfile->descend_dir;
$self
}
sub command {
my ($self, $filename)=@_;
my $polydir = $Polymake::InstallTop;
my $outdir = $self->tempfile->dir;
"cp -R -L $polydir/resources/threejs/js $outdir; $webbrowser $filename 1>/dev/null 2>&1";
}
sub new_drawing {
my ($self, $title, $vis)=@_;
$self->SUPER::new_drawing($title);
if (defined (my $rep=$vis->representative)) {
$self->graphics->transform=Visual::Transformation->get_transformation_matrix($rep);
}
$self;
}
sub append {
my $self=shift;
$self->graphics->append(@_);
}
# @category Visualization
# Create a three.js file.
label threejs
# The following are rarely used.
# Much more common are the methods in apps/{graph,polytope,...}/rules/threejs.rules
global_method threejs.geometry: draw(Visual::PointSet, @) {
my ($self, $PointSet)=@_;
$self->append(new ThreeJS::PointSet($PointSet));
}
global_method threejs.geometry: draw(Visual::Wire, @) {
my ($self, $G)=@_;
$self->append(new ThreeJS::Wire($G));
}
global_method threejs.geometry: draw(Visual::Polygon, @) {
my ($self, $P)=@_;
$self->append(new ThreeJS::Solid($P));
}
global_method threejs.geometry: draw(Visual::Polygons, @) {
my ($self, $P)=@_;
$self->append(new ThreeJS::Solid($P));
}
package ThreeJS::File::Writer;
import Visual::FileWriter;
sub file_suffix { ".html" }
sub new_drawing {
my ($self, $title, $vis)=@_;
if (defined (my $rep=$vis->representative)) {
$self->graphics->transform=Visual::Transformation->get_transformation_matrix($rep);
}
$self->title=$title;
$self;
}
sub DESTROY { }
package application;
# @Category Visualization
# Produce an html file with given visual objects.
# @param Visual::Object vis_obj object to display
#
# @option String File "filename" or "AUTO"
#
# 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 ''.html'' suffix if needed.
#
# An automatically generated file name is displayed in the verbose mode.
user_function threejs(Visual::Object+, { File => undef }) {
visualize_explicit(@_, "ThreeJS");
}
# Local Variables:
# mode: perl
# cperl-indent-level:3
# End:
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