Is it possible to use an image from an FEA (final element analysis) like the image attached to Influence the density of the Voronoi such that red sections in the FEA image represent high-density areas in the Voronoi that is generated?

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Is it possible to use an image from an FEA (final element analysis) like the image attached to Influence the density of the Voronoi such that red sections in the FEA image represent high-density areas in the Voronoi that is generated?

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Yes - If you have your stress values as mesh vertex colours, you can plug it into the ImageCircles component in Kangaroo to generate a point distribution, then take the Voronoi of that. See here for some similar discussions: