Context Matters: weight maps and polygons


I saw a few questions about context recently, so I thought I’d try to work my way through those questions, starting with some basic scenarios. First up, then, is a question about using weight maps to control subdivision.

In this case, we’re dealing with per-point and per-polygon contexts.

A problem with using weight maps to control subdivision is that weight maps are per-point:

So you’ll end up with a context mismatch if you try to do something like this:

The context mismatch makes sense, since every polygon has more than one point, so what can a per-point weight map value mean for a polygon? One way around this would be to do something like this, and use the average of the per-point weight map values, but in a per-polygon context:

Here’s the full ICE tree:

Another approach would be to somehow use a per-polygon location, because with a location you can get the interpolated value of the weight map values:

1 thought on “Context Matters: weight maps and polygons

  1. Is it possible to apply this technique to shape deformation? I created a compound to do secondary shape deformation and I have a compound to paint on a weight map based on closes point but I can not figure out how to combine the two. Any suggestions would be greatly appreciated!

    Thank you for your time!

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