Understanding Transform.Shear

[brobes05]

Hi,

I have some confusion with understanding this method.
Simply, I want to shear an object 45 degrees in the right viewport, so I don’t understand:
A) where do I input the object to transform into this shear method?
B) If the shear method only outputs an xform, then what method do I input that into to complete my code?
C) I assume I am suppose to derive my 45 degrees from the three vectors required, but that is confusing to me.

Rhino.Transform.Shear(rg.Plane.WorldYZ, #not sure what to do here)

Thanks in advance.

[eddi]

Mayebe this helps >?

Trying to understand parameters for Shear transformation

I understand something like that Vec 1 = 1: 1 (Scale factor) FirstArray X = Direction and size for X SecondArray Y = direction and size for Y, x element in this array determines Your wanted angle. Third Z = direction and size for Z [image] Example Angle 20 = ArrayY = x= tan(20) x= 0.3639 Example Angle 45 = ArrayY = x= tan(45) x= 1

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Trying to understand parameters for Shear transformation

Hi Mitch I see that rhinoscriptsyntax.XformShear() docs talk about ‘scale factors’, then I think that the coordinates of the object (relative to the reference plane) gets multiplied by the vectors and then summed to obtain the target points … maybe … This seems to work: import Rhino import scriptcontext def main(): rep = Rhino.Geometry.Brep.CreateFromBox( Rhino.Geometry.BoundingBox( Rhino.Geometry.Point3d.Origin, Rhino.Geometry.Point3d( 100.0, 100.0, 100.0 ) ) ) xf…