Weave's and waterlines

[andyw]

I just noticed Julian has posted something about unit-testing on his blog:

http://www.freesteel.co.uk/wpblog/2011/11/unit-testing-cam-algorithms-what-could-that-be-about/

Does anyone have a good understanding of the weave data-structure he is using?

My understanding is that it is used for calculating waterlines and the basic lower-level function is "push-cutter", i.e. a function that pushes the cutter into contact with a triangle along either the X or Y-axis.

The problem with my current implementation of weave/fiber is that it can lead to topological inconsistencies if/when the push-cutter function runs into trouble because of numerical inaccuracy. Julians Weave-approach is probably different and avoids this. It looks like a quad-tree?

Anders