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#
# The PDL::Graphics::TriD::ViewPort is already partially defined in
# the appropriate gdriver (GL or VRML), items defined here are common
# to both
#
package PDL::Graphics::TriD::ViewPort;
use strict;
use warnings;
use base qw/PDL::Graphics::TriD::Object/;
use fields qw/X0 Y0 W H Transformer EHandler Active ResizeCommands
DefMaterial AspectRatio Graphs/;
$PDL::Graphics::TriD::verbose //= 0;
sub new {
my($type,$x0,$y0,$w,$h) = @_;
my $this= $type->SUPER::new();
$this->{X0} = $x0;
$this->{Y0} = $y0;
$this->{W} = $w;
$this->{H} = $h;
$this->{DefMaterial} = PDL::Graphics::TriD::Material->new;
return $this;
}
sub graph {
my($this,$graph) = @_;
if(defined($graph)){
$this->add_object($graph);
push(@{$this->{Graphs}},$graph);
}elsif(defined $this->{Graphs}){
$graph = $this->{Graphs}[0];
}
return($graph);
}
sub delete_graph {
my($this,$graph) = @_;
$this->delete_object($graph);
for(0..$#{$this->{Graphs}}){
if($graph == $this->{Graphs}[$_]){
splice(@{$this->{Graphs}},$_,1);
redo;
}
}
}
sub resize {
my($this,$x0,$y0,$w,$h) = @_;
$this->{X0} = $x0;
$this->{Y0} = $y0;
$this->{W} = $w;
$this->{H} = $h;
return $this;
}
sub add_resizecommand {
my($this,$com) = @_;
push @{$this->{ResizeCommands}},$com;
print "ARC: $this->{W},$this->{H}\n" if($PDL::Graphics::TriD::verbose);
&$com($this->{W},$this->{H});
}
sub set_material {
$_[0]->{DefMaterial} = $_[1];
}
sub eventhandler {
my ($this,$eh) = @_;
if(defined $eh){
$this->{EHandler} = $eh;
}
return $this->{EHandler};
}
sub set_transformer {
$_[0]->transformer($_[1]);
}
sub transformer {
my ($this,$t) = @_;
if(defined $t){
$this->{Transformer} = $t;
}
return $this->{Transformer};
}
#
# restore the image view to a known value
#
sub setview{
my($vp,$view) = @_;
my $transformer = $vp->transformer();
if(ref($view) eq "ARRAY"){
$transformer->set({WRotation=>$view});
}elsif($view eq "Top"){
$transformer->set({WRotation=>[1,0,0,0]});
}elsif($view eq "East"){
$transformer->set({WRotation=>[0.5,-0.5,-0.5,-0.5]});
}elsif($view eq "South"){
$transformer->set({WRotation=>[0.6,-0.6,0,0]});
}
}
1;
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