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import os
import sys
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..')))
import utils3d
import numpy as np
import glm
def run():
for i in range(100):
if i == 0:
spatial = []
N = 1
else:
dim = np.random.randint(4)
spatial = [np.random.randint(1, 10) for _ in range(dim)]
N = np.random.randint(1, 10)
fovy = np.random.uniform(5 / 180 * np.pi, 175 / 180 * np.pi, spatial)
aspect = np.random.uniform(0.01, 100, spatial)
near = np.random.uniform(0.1, 100, spatial)
far = np.random.uniform(near*2, 1000, spatial)
eye = np.random.uniform(-10, 10, [*spatial, 3])
lookat = np.random.uniform(-10, 10, [*spatial, 3])
up = np.random.uniform(-10, 10, [*spatial, 3])
points = np.random.uniform(-10, 10, [*spatial, N, 3])
pts = points - eye[..., None, :]
z_axis = (eye - lookat)
x_axis = np.cross(up, z_axis)
y_axis = np.cross(z_axis, x_axis)
x_axis = x_axis / np.linalg.norm(x_axis, axis=-1, keepdims=True)
y_axis = y_axis / np.linalg.norm(y_axis, axis=-1, keepdims=True)
z_axis = z_axis / np.linalg.norm(z_axis, axis=-1, keepdims=True)
z = (pts * z_axis[..., None, :]).sum(axis=-1)
x = (pts * x_axis[..., None, :]).sum(axis=-1)
y = (pts * y_axis[..., None, :]).sum(axis=-1)
x = (x / -z / np.tan(fovy[..., None] / 2) / aspect[..., None]) * 0.5 + 0.5
y = (y / -z / np.tan(fovy[..., None] / 2)) * 0.5 + 0.5
z = utils3d.numpy.project_depth(-z, near[..., None], far[..., None])
expected = np.stack([x, y, z], axis=-1)
actual, _ = utils3d.numpy.transforms.project_gl(points, None,
utils3d.numpy.view_look_at(eye, lookat, up),
utils3d.numpy.perspective(fovy, aspect, near, far))
assert np.allclose(expected, actual), '\n' + \
'Input:\n' + \
f'\tfovy: {fovy}\n' + \
f'\taspect: {aspect}\n' + \
f'\tnear: {near}\n' + \
f'\tfar: {far}\n' + \
f'\teye: {eye}\n' + \
f'\tlookat: {lookat}\n' + \
f'\tup: {up}\n' + \
f'\tpoints: {points}\n' + \
'Actual:\n' + \
f'{actual}\n' + \
'Expected:\n' + \
f'{expected}'
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