Getting the Block instance insertion plane

[tigberlin89]

Hi guys,
Do you know how can I get the block instance current Rotation ?.
Is it possible through the block instance Xform?. I have tried to use the blockinstanceXForm and it returned to me a Transformation Matrix 4X4.How can I use that to get the current Rotation relative to the initial Rotation ?

Any Ideas pleas ?

[tigberlin89]

This is how the Matrix Looks like:

R0=(0.984807753012208,0.17364817766693,0,31.5810718028205), R1=(-0.17364817766693,0.984807753012208,0,17.2116287951364), R2=(0,0,1,4), R3=(0,0,0,1)

[tigberlin89]

If there is another easy way to get the Z_Rotation, just let me know pleas !.
cheers,
Ghaith

[Dancergraham (Graham Knapp)]

Hello,

It looks like there is an Transform.GetEulerZYZ method https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Transform_GetEulerZYZ.htm

I dont know how to use it though…

-Graham

[tigberlin89]

Hi Graham,
Thank you for your Reply. Do you have a method to generate the Minimum bounding box for a list of objects ?

[Dancergraham (Graham Knapp)]

Yes does this help ?

Minimum oriented bounding box. Implementation in Grasshopper + Python script node

Well, in between end-of-semester bouts of laser cutting, milling and 3D printing, I was able to work on my bounding box script for sometimes a few minutes, sometimes a half hour or so… I finally put a bit of UI on it and I’m going to throw it out here now… It’s a combined 2D and 3D bounding box tool, it first checks to see if the input objects are planar/coplanar, if yes, it calculates a minimum bounding rectangle, if not, it calculates a 3D box. In both cases it makes an initial rough pass t…

[tigberlin89]

I have found this one from MinimumBoundingBox.py (17.5 KB) Helvetosaur as well