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Context matters: Using weightmaps with point clouds

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A weightmap is per-point, but it’s per-point on the emitting geometry, not the point cloud. So you can’t just do a plain “get weights” if you want to use the weightmap to control particle values like Velocity or Speed.
weightmap_context_mismatch

Instead, you use get a location, like the particle emit location, and then get the weightmap value at that location. Then you’ll have a particle per-point context to work with.
weightmap_at_location
When you get the weight at a location, you get an interpolated weight value.



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