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Tensorflow ray utility functions.
Functions
intersection_ray_sphere(...): Finds positions and surface normals where the sphere and the ray intersect.
sample_1d(...): Sample points on a ray using a sampling strategy (ray wrapper for sampling functions).
sample_inverse_transform_stratified_1d(...): Sample points on a ray using inverse transform stratified sampling.
sample_stratified_1d(...): Sample points on a ray using stratified sampling.
triangulate(...): Triangulates 3d points by miminizing the sum of squared distances to rays.