Stephen <mca### [at] aolDOTcom> wrote:


For the sake of completeness, in case someone is reading this thread in the
future.....

Here is a fairly simple example of what I was asking about.  Take the following
snippet....

object {
  box {<-1,-1,-1>,<1,1,1>}
  scale_by_axis(y,x)
}

The hypothetical function/macro scale_by_axis would take the "y" values of the
box, and scale them by their corresponding position on the x axis.  The end
result would be two triangular prisms "joined" at the z axis (with the left half
of the box inverted due to negative scaling).

[Please note that this is *not* an example of the type of object I am interested
in creating - I choose it as a simple example of the concept.]

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