The first set of breps has intersection with the second set of breps,but it still returns null.May this api go well on some conditions? And what’s the conditions?I find this api goes well sometime,and sometime goes wrong.I’m so confused.

Just as with _BooleanDifference command the Brep.CreateBooleanDifference Method follows the same constraints. The API call not returning anything means most likely that your input is not correct. If you find a case where _BooleanDifference works but the API call not, then please provide the BReps a…

boolean_difference.3dm (260.9 KB) On the bottom the object has goes well,but on the top the object goes wrong.And the codes is same. The code shows as the pic at the below. [image] On the top the brep has transformed ,and on the bottom the brep has not transformed.There is an only difference be…

Hi @duzhengjie , The top object is not a Brep but a Block that contains a Brep. Explode the block first. Then take the resulting Brep and use it as input. – Dale

Sorry,the file I did was some wrong.I upload a new file,this file is correct.Please check it again,thanks! boolean_difference.3dm (273.0 KB)

Assuming I understood correctly what booleans how this appears to be working just fine. It still works with using ModelAbsoluteTolerance in the place of 0.001: [brep_booleandifference]

body.txt (19.1 KB) parameter.txt (19.1 KB) var body = JsonConvert.DeserializeObject<Brep>(File.ReadAllText(@"D:\Desktop\body.txt")); var parameters = JsonConvert.DeserializeObject<Brep[]>(File.ReadAllText(@"D:\Desktop\parameter.txt")); doc.Objects.Add(body); …

I see indeed no result with the free floating geometries when used straight after parsing from JSON. But it works when using the geometry added to the document: import Rhino import scriptcontext as sc import System.Collections.Generic as scg bodylist = scg.List[Rhino.Geometry.Brep]() paramlist = s…

It’s true, it’s amazing. However, in some cases, our current approach is fine. Also, our current design cannot support the modifications you provided because we use Rhino Compute.

I am merely investigating what is happening, I was not proposing this as a workaround or modification for your script! @chuck can you please have a look to see what the difference is between the geometry before adding to the document, and the geometry after adding to the document?

Hi @ken_zhang , Depending on how you construct your Brep, you might need to do a few things to make it more compatible with our Boolean solver. Please review this and let me know if you have any questions. mcneel/rhino-developer-samples/blob/2420693e5586cfe46214630a7517feb7c7f23f29/rhinoco…

"Brep.CreateBooleanDifference" returns null

Rhino Developer

ken_zhang February 21, 2022, 4:26am 17

It’s Ok, The problem with the boolean operation itself seems to be solved, thanks

Only enable grips object when select RhinoObject

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"Brep.CreateBooleanDifference" returns null

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