Ordering Triangles in Triangulated Terrains Over Regular Grids

Jesús Alonso & Robert Joan-Arinyo
In this work we report on a set of rules to visit triangles in triangulated height fields defined over regular grids in a back-to- front order with respect to an arbitrary viewpoint. With the viewpoint, we associate an axis-alligned local reference framework. Projections on the XY plane of the local axis and the bisector of the first and third quadrants define six sectors. Specific visiting rules for collections of triangles that project on each sector...
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