Flips two Triangles starting at Tri1 and Tri2 by their shared edge. A way to visualize this is form a rectangle with the two triangles, take their shared edge, and turn it to become two different triangles within the same quad.
In
Exec
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Data
Mesh Data Structure (by ref)
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Tri 1
Integer
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Tri 2
Integer
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Out
Exec
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