I’m trying to make a component that inputs Breps and outputs their volumes. The problem with GH’s “Volume” component is that it also calculates centroids, and that is apparently a big contributor the execution time. So since I don’t need the centroids, but have a LOT of volumes to calculate, well……

I added this to the wishlist yesterday https://mcneel.myjetbrains.com/youtrack/issue/RH-64836

[image] dale: Here is some sample code that demonstrates how to create a task-capable “just” Volume component. Hi Dale, I tried to create the “Just” Area variant of your .cs by naively replacing “Volume” by “Area” everywhere and disabling the part which checks for closed Breps and Meshes… Ju…

Hi @osuire , Let me know if this helps: SampleGhTaskAreaComponent.cs – Dale

Hi Dale, After much head-scratching, I figured that the strange behavior of my definition could be traced back to your component : [Parallel computing with empty branches] I realize that it doesn’t account for empty branches, and thereafter, the data is completely shifted in the tree. Turning o…

Hi @osuire , I don’t have have access to the code in BlockTools.gha. But might make sure the code never returns null or nothing. In cases where the input is null or the area/volume cannot be computed, you should always return something, perhaps RhinoMath.UnsetValue. if (null != result) data.SetDa…

Hi Dale, my code is in fact your code : [image] dale: Let me know if this helps: SampleGhTaskAreaComponent.cs So I suppose I should add this : [Missing code]

I’d start there and see if you like the results. – Dale

[image] dale: I’d start there and see if you like the results. It’s not finding RhinoMath… Isn’t there a more universal way to preserve empty branches and that doesn’t look like a hack ?

Hi @dale , I can’t get over the hurdles of proper references, and such. [Rhinomath] Would you mind providing a simple .cs for fast area and volume calculation that doesn’t mess up trees ? Or, altenately, @DavidRutten , would you mind adding a “Fast area” and a “Fast volume” component in the “Sur…

[image] Sorry, not to help you with coding but sharing general thought. In situations like this, we should be able to switch to faster algorithms by removing unnecesary outputs (by this minus button, like in e.g. Explode Tree). We can already modify components by choosing if they run in parallel…

Need help for component that calculates Brep Volumes

Grasshopper Developer

brian (Brian Gillespie) July 26, 2022, 9:20pm 31

RH-64836 is fixed in the latest WIP

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Need help for component that calculates Brep Volumes

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