Detecting Mirrored blocks

[lignindes]

Hello,

How can you detect mirrored blocks?

I’m sending blocks to Revit with RhinoInside and am getting imcorrect transforms because I’m not able to differentiate mirrored vs. rotated blocks. I can see with GH that the transforms are different, but I’m not sure how to set up a reliable way to distinguish mirrored vs. rotated.

mirror.vs.rotate.3dm (2.8 MB)

[Japhy]

Hi lignindes,

Mirrored blocks in Rhino have a negative Z axis, try this definition to sort Rhino mirrored blocks.

R8-Mirrored-Z-Axis.gh (9.0 KB)

[dale (Dale Fugier)]

Hi @lignindes,

The attached Python script provides a reliable way of testing.

IsBlockInstanceMirrored.py (842 Bytes)

– Dale

[lignindes]

Thank you both so much @Japhy and @dale !

We all now know about the depths of RhinoCommon, all the way down to the TransformSimilarityType enum!

TransformSimilarityType enum