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Fix handling of projective transforms #199

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Fix handling of projective transforms #199

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Commits on Sep 1, 2020

  1. Fix handling of projective transforms 

    When transforming points with projective matrices,
we must divide the resulting vector by w, in order
to get the normalized result.

This commit fixes graphene_matrix_transform_point,
graphene_matrix_transform_point3d and
graphene_matrix_transform_bounds. I suspect that
some of the remaining transform functions need
similar fixes, but they are not used in GTK, so
I couldn't verify that.
    Matthias Clasen committed Sep 1, 2020
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  2. fixup! Fix handling of projective transforms 

    Fix a copy-paste error

Pointed out by Timm Bäder.
    Matthias Clasen committed Sep 1, 2020
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