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About straaljager

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    Sam Lapere
  1. Hello, I'm new to Houdini and have searched on the net for answers to my problem, but couldn't find any. I am trying to visualize a brain tractography (white matter fiber tracts) dataset which was exported from Blender as FBX mesh (Blender automatically converts curves to meshes when exporting to FBX). When importing this file into Houdini, it shows up as a ribbon of long quads, which can be reduced to a point line with a polyspline node. Rendering the polyspline directly with Arnold does not nearly look as good as Houdini's native curve primitives (left in the screenshot below). Is it possible to obtain a smooth curve that goes through the points or stays close to them, without resulting in artefacts like the segments in the picture? Tractography mesh exported from Blender The tracts are represented by quad ribbons: Close-up of one ribbon after polyspline (right) and native curve primitive in Houdini (left): Rendering the polyspline with Arnold shows the individual segments: