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# Copyright (C) 2009, Parrot Foundation.
=head1 TITLE
math.pir - Demo OpenGL::Math module
=head1 SYNOPSIS
$ cd parrot-home
$ ./parrot examples/opengl/math.pir
=head1 DESCRIPTION
NOTE: THIS IS JUST A STUB WHILE OpenGL::Math IS BEING DEVELOPED. IT WILL BE
FILLED OUT LATER.
This is a simple demo of functionality available from the C<OpenGL::Math>
Parrot module.
=cut
.sub main :main
# Load OpenGL::Math and data dumping debug module
load_bytecode 'OpenGL/Math.pbc'
load_bytecode 'dumper.pbc'
# Create some sample data
.local pmc vec1, vec2
(vec1, vec2) = make_test_vectors()
# Run a few simple tests
sanity(vec1, vec2)
normalize(vec1)
.end
.sub make_test_vectors
# Test some basics
$P0 = new 'FixedFloatArray'
$P0 = 4
$P0[0] = 0.5
$P0[1] = 1.0
$P0[2] = 2.0
$P0[3] = 4.0
$P1 = new 'FixedFloatArray'
$P1 = 4
$P1[0] = 1.0
$P1[1] = 2.0
$P1[2] = 3.0
$P1[3] = 4.0
.local pmc Vec4
Vec4 = get_class ['OpenGL';'Math';'Vec4']
$P2 = new Vec4
$P2.'set_vals'($P0)
$P3 = Vec4.'new'('vals' => $P1)
.return ($P2, $P3)
.end
.sub sanity
.param pmc vec1
.param pmc vec2
.local pmc vec3
vec3 = vec1.'mul'(vec2)
say "\nvec1 * vec2 => vec3"
_dumper(vec1, 'vec1')
_dumper(vec2, 'vec2')
_dumper(vec3, 'vec3')
.local pmc scaled
scaled = vec1.'mul_num'(3)
say "\nvector * 3 => scaled"
_dumper(vec1, 'vector')
_dumper(scaled, 'scaled')
.end
.sub normalize
.param pmc vector
.local pmc normalized
normalized = vector.'normalize'()
say "\nnormalize(vector) => normalized"
_dumper(vector, 'vector')
_dumper(normalized, 'normalized')
.end
# Local Variables:
# mode: pir
# fill-column: 100
# End:
# vim: expandtab shiftwidth=4 ft=pir:
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