The problem with primitives is that they are sometimes "closed" with an edge lines. The surface can't be extended beyond the edgeline.
The benefit is that they can be both scaled, and deformed. Like this:
Your suggested prim have 2 edge lines removed, compared to tri4.dat. The other two surfaces are closed, limiting the usabillity.
The benefit is that they can be both scaled, and deformed. Like this:
Code:
1 16 0 0 0 16 0 8 0 0 10 0 -10 0 tri4.datYour suggested prim have 2 edge lines removed, compared to tri4.dat. The other two surfaces are closed, limiting the usabillity.