1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
#!/usr/bin/env perl
use 5.12.0;
use strict;
use warnings;
use OpenGL qw/:all/;
use AntTweakBar qw/:all/;
use AntTweakBar::Type;
use List::MoreUtils qw/pairwise/;
use List::Util qw/reduce/;
use Math::MatrixReal;
use Math::Trig;
use Data::Dump qw/dump/;
use Time::HiRes qw/tv_interval gettimeofday/;
sub display;
sub reshape {
my ($width, $height) = @_;
glViewport(0, 0, $width, $height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity;
gluPerspective(40, $width/$height, 1, 10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity;
gluLookAt(0,0,5, 0,0,0, 0,1,0);
glTranslatef(0, 0.6, -1);
AntTweakBar::window_size($width, $height);
}
glutInit;
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(640, 480);
glutCreateWindow("Math::MatrixReal");
AntTweakBar::init(TW_OPENGL);
glutDisplayFunc(\&display);
glutReshapeFunc(\&reshape);
glutMouseFunc(\&AntTweakBar::eventMouseButtonGLUT);
glutMotionFunc(\&AntTweakBar::eventMouseMotionGLUT);
glutPassiveMotionFunc(\&AntTweakBar::eventMouseMotionGLUT);
glutKeyboardFunc(\&AntTweakBar::eventKeyboardGLUT);
glutSpecialFunc(\&AntTweakBar::eventSpecialGLUT);
#AntTweakBar::GLUTModifiersFunc(\&glutGetModifiers);
reshape(640, 750);
# variables
my $zoom = 1.0;
my $angle = 0.0;
my $axis = [ 0.0, 0.0, 1.0 ];
my $light_multiplier = 1.0;
my $light_direction = [ -0.57735, -0.57735, -0.57735 ];
my $material_ambient = [ 0.5, 0.0, 0.0];
my $material_diffuse = [ 1.0, 1.0, 0.0];
my $current_matrix = ~(rotation_matrix($axis, $angle));
my $shape_id = 1;
glNewList($shape_id, GL_COMPILE);
glutSolidTeapot(1.0);
glEndList;
sub rotation_matrix {
my ($axis, $angle) = @_;
my ($x, $y, $z) = @$axis;
my $f = $angle;
my $cos_f = cos(deg2rad($f));
my $sin_f = sin(deg2rad($f));
my $rotation = Math::MatrixReal->new_from_rows([
[$cos_f+(1-$cos_f)*$x**2, (1-$cos_f)*$x*$y-$sin_f*$z, (1-$cos_f)*$x*$z+$sin_f*$y, 0 ],
[(1-$cos_f)*$y*$z+$sin_f*$z, $cos_f+(1-$cos_f)*$y**2 , (1-$cos_f)*$y*$z-$sin_f*$x, 0 ],
[(1-$cos_f)*$z*$x-$sin_f*$y, (1-$cos_f)*$z*$y+$sin_f*$x, $cos_f+(1-$cos_f)*$z**2 ,0 ],
[0, 0, 0, 1 ],
]);
}
sub display {
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glEnable(GL_NORMALIZE);
# set light
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
my $ambient_light = OpenGL::Array->new_list(
GL_FLOAT, (0.4 * $light_multiplier) x 3, 1.0);
my $diffuse_light = OpenGL::Array->new_list(
GL_FLOAT, (0.8 * $light_multiplier) x 3, 1.0);
glLightfv_c(GL_LIGHT0, GL_AMBIENT, $ambient_light->ptr);
glLightfv_c(GL_LIGHT0, GL_DIFFUSE, $diffuse_light->ptr);
my $light_position = OpenGL::Array->new_list(
GL_FLOAT, map { $_ * -1 } @$light_direction, 0.0);
glLightfv_c(GL_LIGHT0, GL_POSITION, $light_position->ptr);
# set material
my $oga_material_ambient = OpenGL::Array->new_list(
GL_FLOAT, @$material_ambient);
my $oga_material_diffuse = OpenGL::Array->new_list(
GL_FLOAT, @$material_diffuse);
glMaterialfv_c(GL_FRONT_AND_BACK, GL_AMBIENT, $oga_material_ambient->ptr);
glMaterialfv_c(GL_FRONT_AND_BACK, GL_DIFFUSE, $oga_material_diffuse->ptr);
# Rotate and draw shape
glPushMatrix;
{
glMultMatrixf_p($current_matrix->as_list);
glTranslatef(0.5, -0.3, 0.0);
glCallList($shape_id); # shape_id = shape + 1
}
glPopMatrix;
AntTweakBar::draw;
glutSwapBuffers;
glutPostRedisplay;
}
my $bar = AntTweakBar->new(
"Math::MatrixReal",
);
$bar->add_variable(
mode => 'rw',
name => "axis",
type => 'direction',
value => \$axis,
definition => " opened=true label='Rotation axis' ",
);
$bar->add_variable(
mode => 'rw',
name => "angle_rw",
type => 'integer',
cb_read => sub { $angle },
cb_write => sub {
$angle = shift;
# normalizing rotation axis
my $length = reduce { $a + $b } map { $_ * $_ } @$axis;
my $normal = [0.0, 0.0, 1.0];
if($length) {
$normal->[$_] = $axis->[$_] / $length for(0 .. @$axis-1);
}
$current_matrix = ~(rotation_matrix($normal, $angle));
},
definition => " label='angle' max=359 min=0",
);
glutMainLoop;
|
