matrix_init_look_at: Handle corner cases better#186
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graphene_matrix_init_look_at() currently breaks badly in the case where the given point is either the same as the eye, or in "up" direction from the eye. The exact definition of look_at() kinda breaks down in this situation, but this is the behaviour three.js uses, and its better than nothing.
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FTR, the green plane in examples/clipping in gthree master is fixed by this commit. |
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Nice; I do wonder if we have tests that have been commented out because of this. |
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graphene_matrix_init_look_at() currently breaks badly in the case
where the given point is either the same as the eye, or in "up" direction
from the eye.
The exact definition of look_at() kinda breaks down in this situation,
but this is the behaviour three.js uses, and its better than nothing.