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David C. Lonie authored
I missed this when I was updating the text actors to better support rotations + alignments. Basically, now we anchor the texture's image extent index <0, 0, 0> to the mapper/actor's position to get "proper" alignment. Also add a bit to ensure that this is exported properly by GL2PS and prevent errors from converting NULL to std::string. These features are tested by a test added in a later patch, in this branch, as the other TextMapper implementation is still used by default at this point.
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