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Vector3D.CrossProduct() on Allplan 2025 [Vyřešeno]

tan_dao
tan_dao
21.11.2025 - 04:09

Hello everyone,
I work on Allplan 2025
I got a problem with the method Vector3D.CrossProduct()


vector_x = AllplanGeometry.Vector3D(1,0,0)
vector_y = AllplanGeometry.Vector3D(0,1,0)
cross_product = vector_x.CrossProduct(vector_y)
print(str(cross_product))

Unfortunately, the result always is None for any vector pair.
Does anyone have any ideas?
Thanks!
Tan

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guballplan
guballplan
21.11.2025 - 06:22 *

CrossProduct is a mutator method. It does not return a new vector instance but rather modifies the vector that calls it (in your case vector_x is modified).

Hope this helped

guballplan
guballplan
21.11.2025 - 06:22 * [Řešení]

CrossProduct is a mutator method. It does not return a new vector instance but rather modifies the vector that calls it (in your case vector_x is modified).

Hope this helped

tan_dao
tan_dao
21.11.2025 - 07:56

Hello guballplan.
It's my fault
I didn't notice the document. It is written clearly.

Formula: Va = Va x Vb
Va is this Vector

Thank you very much!
Tan

cmaignan
cmaignan
21.11.2025 - 09:07 * [Nejužitečnější příspěvek]

Hi,

As guballplan saied, because it doesn't return anything cross_product will be None.

but

vector_x.CrossProduct(vector_y)

will modify vector_x as => Vector3D(..., ..., ...)

Best
Christophe

PS: here the documentation