Parham Ghazanfari pghazanfari
pghazanfari
/ camera.py
Created
August 29, 2019 22:46
numpy Perspective Projection + Look At Matrices
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| import numpy as np | |
| def perspective_fov(fov, aspect_ratio, near_plane, far_plane): | |
| num = 1.0 / np.tan(fov / 2.0) | |
| num9 = num / aspect_ratio | |
| return np.array([ | |
| [num9, 0.0, 0.0, 0.0], | |
| [0.0, num, 0.0, 0.0], | |
| [0.0, 0.0, far_plane / (near_plane - far_plane), -1.0], | |
| [0.0, 0.0, (near_plane * far_plane) / (near_plane - far_plane), 0.0] |
pghazanfari
/ surrounding.py
Last active
December 11, 2023 14:52
Get Surrounding Elements in a Numpy Array
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| def surrounding(x, idx, radius=1, fill=0): | |
| """ | |
| Gets surrounding elements from a numpy array | |
| Parameters: | |
| x (ndarray of rank N): Input array | |
| idx (N-Dimensional Index): The index at which to get surrounding elements. If None is specified for a particular axis, | |
| the entire axis is returned. | |
| radius (array-like of rank N or scalar): The radius across each axis. If None is specified for a particular axis, | |
| the entire axis is returned. |