Dean Grubb


About Me

Technical Director


United Kingdom

Houdini Skills

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Recent Forum Posts

Applying carved line with easing to "bornFrame" attribute Nov. 11, 2022, 4:29 a.m.


Thanks for your reply and suggestions! That totally works. However, my bad, I definitely should have mentioned, I am trying to do this procedurally, as I have many curves and need to run them in batches/parallel. In the example file the method that works with a linear carve is procedural, and I'm hoping to find a way I can apply easing to the carving and find out mathematically how mimic that with the birthframe distribution.

Thanks again for your solution though!

Applying carved line with easing to "bornFrame" attribute Nov. 10, 2022, 11:03 a.m.


I have a carved line, which after the fact I am calculating a "bornFrame" for each point in the line (i.e. the frame the line begins to 'exist' on). I'm doing this with a simple fit between the carve frames and ptnum and npoints of the pre carved line. It works as the fit and the carve are a linear mapping. It breaks when I apply easing on to the carve.

Initially I thought this was simple, just apply the same easing curve to the calculation of the bornFrame, but that doesn't work as for example easing in will produce lower bornFrame values, but they would need to be higher as it would take longer for each point to be "born".

Can anyone enlighten me as to how to do this?


RBD Material Fracture Wood Issue Jan. 27, 2021, 1:19 p.m.

Fwiw, I was having the same problem and Sean's suggestion of Detail -> detriangulate -> only unchanged polys worked a treat.