Is there a way to use a PM3D plane (card) + Alpha to cast the shadow of the alpha?
This test was using BPR
Divide the plane to have enough points to support converting the alpha to a mask. Then delete the lower levels. Use Tool>Masking>Mask by Alpha, followed by Tool>Visibility>HidePt and Tool>Geometry>DelHidden.
You’ll now have actual geometry based on your original mask and should be able to get the render you want.
Thanks Aurick, but I’ve tried a few times and getting this mess:
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