Campbell Barton
d885b1141c
Change extraction callbacks to take index ranges instead of calling them for each mesh element (poly, loop, vert & edge). This gives a minor overall performance gain in my tests, ~5% on average. Details: - Use typed parameter structs and macros for looping over elements. Without this, changes to these callbacks is time consuming as changes need to be made in many places. - Avoid iterating over polygon-loops when iterating over polygons is sufficient. - Simplify logic to access adjacent loops for faster line extraction. - Rename 'loop' iterators to 'poly' (as they take polygon ranges) the iterator callbacks can operator on either polygon or loop data. - Use term 'last' for the last index (inclusive), use 'end' when this value (not inclusive).