Mark Kimpel wrote:
I'm using the command below on an open3d() object to create a shaded
cube. Changes to myScalingFactor do not effect changes in the size of
the cube. What is the correct approach? Mark
shade3d(translate3d(cube3d(identityMatrix() *
myScalingFactor),-6,1,-1),col="green", alpha = 0.2)
Homogeneous coordinates are strange. Your
identityMatrix() * myScalingFactor
produces a matrix that has the same effect as not multiplying. You need
scaleMatrix(myScalingFactor, myScalingFactor, myScalingFactor)
to get a size change.
Duncan Murdoch
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