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"""
Cubes of different vertex formats.
These formats are unique for wavefront obj files.
"""
from pathlib import Path
import moderngl
import moderngl_window
from pyrr import Matrix44
class Cubes(moderngl_window.WindowConfig):
title = "Cubes"
resizable = True
aspect_ratio = None
resource_dir = Path(__file__).parent.resolve() / 'resources'
def __init__(self, **kwargs):
super().__init__(**kwargs)
# Load the 6 different boxes with different vertex formats
self.box_v3 = self.load_scene('scenes/box/box-V3F.obj')
self.box_c3_v3 = self.load_scene('scenes/box/box-C3F_V3F.obj')
self.box_n3_v3 = self.load_scene('scenes/box/box-N3F_V3F.obj')
self.box_t2_v3 = self.load_scene('scenes/box/box-T2F_V3F.obj')
self.box_t2_c3_v3 = self.load_scene('scenes/box/box-T2F_C3F_V3F.obj')
self.box_t2_n3_v3 = self.load_scene('scenes/box/box-T2F_N3F_V3F.obj')
self.resize(*self.wnd.size)
def render(self, time, frame_time):
self.ctx.enable_only(moderngl.DEPTH_TEST | moderngl.CULL_FACE)
rot = Matrix44.from_eulers((time, time/2, time/3))
# Box 1
view = Matrix44.from_translation((-5, 2, -10), dtype='f4')
self.box_v3.draw(self.projection, view * rot)
# Box 2
view = Matrix44.from_translation((0, 2, -10), dtype='f4')
self.box_c3_v3.draw(self.projection, view * rot)
# Box 3
view = Matrix44.from_translation((5, 2, -10), dtype='f4')
self.box_n3_v3.draw(self.projection, view * rot)
# Box 4
view = Matrix44.from_translation((-5, -2, -10), dtype='f4')
self.box_t2_v3.draw(self.projection, view * rot)
# Box 5
view = Matrix44.from_translation((0, -2, -10), dtype='f4')
self.box_t2_c3_v3.draw(self.projection, view * rot)
# Box 6
view = Matrix44.from_translation((5, -2, -10), dtype='f4')
self.box_t2_n3_v3.draw(self.projection, view * rot)
def resize(self, width, height):
self.ctx.viewport = 0, 0, width, height
self.projection = Matrix44.perspective_projection(45, width / height, 1, 50, dtype='f4')
if __name__ == '__main__':
Cubes.run()
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