Forums Technical Discussion Muscle workflow Skin Solver can save, but nothing can view

Muscle workflow Skin Solver can save, but nothing can view

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ykmonnn
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Joined: Dec. 2020
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Hi guys, I am learning muscle simulation in Houdini recently, but I can't get the correct results in the skin step. Can you help me? Thank you very much
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Edited by ykmonnn - May 16, 2024 10:47:12

Attachments:
Muscle.png (712.3 KB)
Muscles.hiplc (8.0 MB)

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Liesbeth_Levick
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Joined: June 2024
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So the issue is because of inverted tets created by the skin solidify node. This has been completely reworked in H20.5 and no longer causes this issue, but in the mean time, to get it to work in H20, you need to reduce the step size to about 0.1 on the Skin Solidify node for the Interior Surface Blur section.

Some other tips for the rest of your setup:
  • For the second input of your tissue solidify you have two rest position nodes on the muscles and bones. You need to set the mode to "Extract Rest" and the Rest Attrib to "tpose" (if you choose "Extract T-Pose" from the tab creation menu you will get the same settings)
  • Blast away teeth and eyeballs etc. before running the tissue solidify and skin solidify nodes - you'll only want it to run on the skin surface.
  • After your tissuesolvervellum, make sure to blast the exterior surface with "Delete Non Selected" ON - this is to blast all the interior tets, if you check the info dialog you will see that there are no tetrahedrons listed anymore.

Attachments:
extract_tpose.png (119.3 KB)
skin_solidify_step_size.png (26.2 KB)
blast_exterior_surface.png (185.5 KB)

Liesbeth Levick
Technical Director: CFX
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