A script demonstrating the Heat Method for Distance Computation, as described here This came up recently in another thread , and I thought others might find it an interesting example. It is a fast way of getting approximate geodesic distances from a given point to all points on a mesh. Here solved …

Thanks Daniel, That would be great, or if you just point me in the right direction to modify the current code…

Here’s an update that works also with open meshes HeatMethod_Boundary.gh (88.4 KB) As it is it gives you this, which seems to be the best match for geodesic distances: [image] If you look in the code there are also a couple of bools you can switch to get some different non geodesic results If …

I don’t know if I’ll ever use these, but this topic is so pleasing to stalk. Thanks for sharing !

Daniel work is awesome and offers many possibilities but for pure geodesic distance I think the plugin is more useful https://www.food4rhino.com/app/geodesic-heat-method One day I must update mine https://www.grasshopper3d.com/m/discussion?id=2985220%3ATopic%3A1338612

Yes, I did have a look at that plugin, and for pure unsmoothed geodesic distance, I agree it probably does make sense to use an implicit method like the one in the CGAL library which that plugin uses. I like to understand what’s going on and be able to change and play with everything though. I als…

Thanks Daniel, This is really interesting stuff. With the updates, it almost gave me what I was looking for, using “true,false” for the two bools. The heat points are set to include every vertex on the lower naked edge of the mesh. The image below shows three examples: on the left, poisson is false…

I think what might be needed here is to fix the values at the boundaries, but having one as a source and the other 2 as sinks. I’ll have a look.

So I tried a version of the above shape with the two “sink” arms of different length. With poisson false, I now realize that the values produced are normalized and there are the same number on each branch. It seems like I can just modify the separate contouring script to generate contours in a diffe…

Does the fork geometry come from scanned objects?

Heat Method

Grasshopper

DanielPiker (Daniel Piker) July 11, 2020, 4:06pm 24

Finding critical points:
HeatMethod_Morse1.gh (156.2 KB)

critpoints

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Heat Method

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