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
|
import numpy
import moderngl
from moderngl_window.opengl.vao import VAO
from moderngl_window.geometry import AttributeNames
def bbox(size=(1.0, 1.0, 1.0), name=None, attr_names=AttributeNames):
"""
Generates a bounding box with (0.0, 0.0, 0.0) as the center.
This is simply a box with ``LINE_STRIP`` as draw mode.
Keyword Args:
size (tuple): x, y, z size of the box
name (str): Optional name for the VAO
attr_names (AttributeNames): Attribute names
Returns:
A :py:class:`moderngl_window.opengl.vao.VAO` instance
"""
width, height, depth = size[0] / 2.0, size[1] / 2.0, size[2] / 2.0
# fmt: off
pos = numpy.array([
width, -height, depth,
width, height, depth,
-width, -height, depth,
width, height, depth,
-width, height, depth,
-width, -height, depth,
width, -height, -depth,
width, height, -depth,
width, -height, depth,
width, height, -depth,
width, height, depth,
width, -height, depth,
width, -height, -depth,
width, -height, depth,
-width, -height, depth,
width, -height, -depth,
-width, -height, depth,
-width, -height, -depth,
-width, -height, depth,
-width, height, depth,
-width, height, -depth,
-width, -height, depth,
-width, height, -depth,
-width, -height, -depth,
width, height, -depth,
width, -height, -depth,
-width, -height, -depth,
width, height, -depth,
-width, -height, -depth,
-width, height, -depth,
width, height, -depth,
-width, height, -depth,
width, height, depth,
-width, height, -depth,
-width, height, depth,
width, height, depth,
], dtype=numpy.float32)
# fmt: on
vao = VAO(name or "geometry:cube", mode=moderngl.LINE_STRIP)
vao.buffer(pos, "3f", [attr_names.POSITION])
return vao
|
