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flo_NH

stretch and squeeze by map along geometry

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Hello everybody,

I want to strech and squeeze the points of a geometry based on a texture. The points should only move along the surface of the original geometry. 

How can I do this? I am not a pro in Houdini yet but I am getting better....

Below is a gif animation of my setup in Cinema 4D, which had too many limitations, so I want to create this in Houdini.

stretch_and_squeeze_v01-15.gif.d1b7afc4679c2e3245d58657fb7f6f6c.gif

 

My first attempt with the Spring SOP and the "tension" point attribute didn't worked out (see attachment).

[Update / Clarification]: I'm looking for basic hints like which node / solver I should use etc....

Many thanks for any help or hints!

Flo

stretch_and_squeeze.zip

Edited by flo_NH
typo

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Hey everybody,

I just found out that you can't set the tension per point or primitive with Spring SOP see: https://www.sidefx.com/forum/topic/2104/?page=1#post-8680

I tried Cloth as well but I did't found any way to expand or shrink it with point attributes. Basically I want to set a force per point to repeal or attract the other points (but in a cloth or softbody like manner): 

strech_and_compress2.jpg.f38692284c203f28f8f69cad97dd96a6.jpg

  

Do you guys have any hints which solver or method I should use?

Thanks a lot!

Flo

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