I use 0.001 instead of 0 or .leastNonzeroMagnitude because it fixes the log statement: "ignoring singular matrix: ProjectionTransform..." 0.001 is close enough to zero that the scale looks like it is zero, but actually it is just too small to see. .leastNonzeroMagnitude is interpreted as zero by the transform, I'm guessing.
donsleeter
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