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When I voxelize using this script, particles are created inside the object, which uses a lot more memory. Would it be possible to create them only on the surface, like this script does : http://www.creativecrash.com/maya/script/voxelizer
It is possible to create voxels only on surface by "User Hollow" option under the "Global settings" tab. This option will sample the distance between instancing position and closest position on the surface, and eliminate the particles go beyond this threshold.
By the way, particle instancing do take lot memory, especially Maya's legacy instancing is not every efficient. When the scene goes more complex, you probably have to adopt other techniques like proxy rending .
Caetano Veyssières
Replies to this question:
PhateX said about 9 years ago:
Caetano Veyssières said about 9 years ago: