.TransformBy

hi all

a question about .transformBy

just out of curiosity, I have tried to apply a *scaled* matrix to a solid: it seems not to work (AutoCAD alerts: "General modeling failure"); so now i wonder whether the matrix has to be strictly isotropic and NOT scaled.
Moreover: what about blocks? since it's possible to insert a scaled block, I’m expecting a referenced block to be successfully transformed by a scaled matrix; has anybody already tried?

 

I've only used TransformBy in relation to UCS's but the example in the Help includes these matrices:
[pre]
' Scaling Matrix: scale by 10,10 at point 0,0,0
' 10.000000 0.000000 0.000000 0.000000
' 0.000000 10.000000 0.000000 0.000000
' 0.000000 0.000000 10.000000 0.000000
' 0.000000 0.000000 0.000000 1.000000

' Scaling Matrix: scale by 10 at point 2,2
' 10.000000 0.000000 0.000000 -18.000000
' 0.000000 10.000000 0.000000 -18.000000
' 0.000000 0.000000 10.000000 0.000000
' 0.000000 0.000000 0.000000 1.000000
[/pre]
Regards

Wayne Ivory
IT Analyst Programmer
Wespine Industries Pty Ltd

 

what a ##!##@[# I am! I wrote “Dim obj As AcadSolid†instead of “Acad3Dsolid†!!! clear I got no transformation...
- - -
anyway I saw I can use scaling matrices with solids and referenced blocks, but only with the same uniform scaling factor for X, Y and Z; it's impossible a more complex transformation (I think). The only exception is: I can set differently the signs of mx(0,0), mx(1,1), mx(2,2), "mirroring" the solid in different plans (that’s really great). thank you anyway