#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use PDL;
use PDL::Graphics::TriD;
use PDL::Graphics::TriD::Contours;
use PDL::Graphics::TriD::GL;
use PDL::Graphics::TriD::Tk;


my $TriDW;    # declare the graph object in main, defined in initialize

my $MW = MainWindow->new();

my $bframe = $MW->Frame()->pack( -side => 'top', -fill => 'x' );

# This is the TriD Tk widget it is a Tk Frame widget and has all of the
# attributes of a Frame
$TriDW = $MW->Tk()->pack( -expand => 1, -fill => 'both');

# The exit button
my $e_button = $bframe->Button(
   -text    => "Exit",
   -command => sub { exit }
)->pack( -side => 'right', -anchor => 'nw', -fill => 'y' );

# Sets a default focus style for viewport
#setfocusstyle( 'Pointer' );

# This sets the graphic that will be displayed when the window is first opened
$e_button->bind( "<Configure>", [
      sub {
         my $but = shift;
         Torusdemos();
	 $e_button->bind( "<Configure>", '' );
         } ] 
       );

$TriDW->MainLoop;

sub Torusdemos {
   my ( $bh ) = @_;

   return unless defined $TriDW->{ GLwin };
   my $graph;

   $graph = $TriDW->{ GLwin }->current_viewport->graph();

  # define the graph object
      $graph = new PDL::Graphics::TriD::Graph();
      $graph->default_axes();


      my $data;
      my $s = 40;
      my $a = zeroes 2 * $s, $s / 2;
      my $t = $a->xlinvals( 0, 6.284 );
      my $u = $a->ylinvals( 0, 6.284 );
      my $o = 0.5;
      my $i = 0.1;
      my $v = $o + $i * sin $u;

      my $x = $v * sin $t;
      my $y = $v * cos $t;
      my $z = $i * cos( $u ) + $o * sin( 3 * $t );

# color
         $data = new PDL::Graphics::TriD::SLattice(
            [ $x, $y, $z ],
            [
               0.5 *  ( 1 + sin $t ),
               0.5 *  ( 1 + cos $t ),
               0.25 * ( 2 + cos( $u ) + sin( 3 * $t ) )
            ]
         );

#  black and white
#     $data = new PDL::Graphics::TriD::SLattice_S( [ $x, $y, $z ] );


   $graph->add_dataseries( $data, 'Torus-demo' );
   $graph->scalethings();
   $TriDW->current_viewport()->delete_graph( $graph );
   $TriDW->current_viewport()->graph( $graph );
   $TriDW->refresh();
}