Check if an object is a solid

[usbhub]

Hello,
for my macro I have to check, whether an object is a solid or not.
To example:
Body (PartDesign): solid
Sketch: no solid
Plane: no solid
Helix: no solid
Cube: solid
Loft: solid
Loft without checking creating volume: no solid

I hope, you understand, what I mean with solid.

Thanks in advance!

[TheMarkster]

Code: Select all

if App.ActiveDocument.Helix.Shape.Solids:
    print("is a solid")

[wandererfan]

for my macro I have to check, whether an object is a solid or not.

A shape can contain solids without being a Solid.

Code: Select all

>>> f = App.ActiveDocument.Fusion
>>> fs = f.Shape
>>> fs.ShapeType
'Compound'
>>> fs.Solids
[<Solid object at 0x564a0c9ec060>]
>>> 

If you want to know if the shape contains solids, use @TheMarkster's method.

If you need to know that it is a Solid in the topological sense, use ShapeType.

[usbhub]

Code: Select all

if App.ActiveDocument.Helix.Shape.Solids:
    print("is a solid")

Thank you, but I use this already in my macro, but for a body in a model it doesn't works. It's a legal body without errors or something else. The file is on my laptop, but I will try it on my computer and report.

usbhub

[wandererfan]

Thank you, but I use this already in my macro, but for a body in a model it doesn't works. It's a legal body without errors or something else. The file is on my laptop, but I will try it on my computer and report.

A Body is a DocumentObject, so it can never be a "Solid". Only Shapes can be Solids.

You could use "App.ActiveDocument.myBody.Shape.Solids".

[vocx]

but for a body in a model it doesn't works. It's a legal body without errors or something else.

As wandererfan says, a PartDesign Body isn't a "solid" by itself, given that it can contain an Origin, a coordinate system, datum planes, lines, points, etc.

A PartDesign Body is a kind of container. Perhaps what you could do is iterate over its elements, and check that its "tip" is a solid, and then assume that the entire Body is a solid as well.

[usbhub]

Thank you all.
I solved the problem with another way. The check, if the object is a solid was for check, if it's possible to convert to mesh. Now I put the creation of the mesh in a try block and if an error occurs, I know, I can't create a mesh from the shape.

[chrisb]

I'm not sure what you are aiming at, but if it is supposed to be a general tool it should be able to handle bodies as well. At least from the GUI a body can be meshed.

[openBrain]

I solved the problem with another way. The check, if the object is a solid was for check, if it's possible to convert to mesh.

I'm not able to check ATM but I'd bet that a shell can also be converted to mesh.

[usbhub]

I solved the problem with another way. The check, if the object is a solid was for check, if it's possible to convert to mesh.

I'm not able to check ATM but I'd bet that a shell can also be converted to mesh.

Oh yes, I think that's right.But that's not too bad. It is only for converting objects to a mesh for rendering / raytracing.

In retrospect, my question was not quite correct, but many thanks to everyone.

usbhub

PS: What is ATM?