05-21-2024
07:42 AM
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05-21-2024
07:42 AM
If the point P is on an edge of a face but not at a corner then a simple search for another face that shares that edge can be done by comparing the three vertices of the face under examnation with the vertces of the edge containing P. It gets more complcated if P is at a vertex of a face. Then an examination of the slope for each of the faces that share that vertex has to be made. Messy!
For example.
Note that starting at a random point 1 yields the following flow. The two faces at point 2 have an upward slope so the water flows down the edge to point 3. The slope of the four faces that share point 3 (two can be ignored) have to be compared before moving on.
lee.minardi