Function viewmatrix

dataset_loaders/load_7Scenes.py:126–132

(z, up, pos)

    return c2w

def viewmatrix(z, up, pos):
    vec2 = normalize(z)
    vec1_avg = up
    vec0 = normalize(np.cross(vec1_avg, vec2))
    vec1 = normalize(np.cross(vec2, vec0))
    m = np.stack([vec0, vec1, vec2, pos], 1)
    return m

def normalize(v):
    """Normalize a vector."""