• Ell's avatar
    transform: don't sample past-the-horizon points · dbac6fcf
    Ell authored
    When applying a perspective transform, don't sample past-the-
    horizon output points, which correspond to behind-the-camera input
    points, and should be clipped.
    
    Currently, we test each point individually, which is suboptimal.
    Ideally, we should precalculate the regions that are inside the
    transformed polygon, and only rasterize those.  Either way, the
    output should now be the same.
    dbac6fcf
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