G'day All
I have created a cylindrical spiral by warping a 2-d grid to three dimensions.
The resulting grid has "quad" connections. I want to make slices through the
spiral at various angles. MapToPlane will not do this on this type
of grid, and
slab does not give me the flexibility I need to choose an
orientation. How can I
convert my spiral to something that I can then slice with MapToPlane.
The intersection of a plane and cylinder is a line or a ring (which
we'll consider a line for this argument, whether it closes or not).
So do the mapping (use Map) of a directed line (generated with
Construct with 2-D positions) on your unwarped surface, then warp
both if you need to see the line in 3-space. You may find it
conceptually simpler to clone the Mark-Compute-Unmark that warps
positions but a Collect'ed group (surface and line) will probably
work passing through the same chain you already have. You can take
one copy of the unwarped line off to another Image to show the
projection and show the warped line draped around the cylinder for a
reference as to where you are sampling from. Ain't commutativity
great?
Chris Pelkie
Vice President/Scientific Visualization Producer
Conceptual Reality Presentations, Inc.
30 West Meadow Drive
Ithaca, NY 14850
[EMAIL PROTECTED]
