source files: xgtm.[ch], term/*.trm, gtplot.h
(GT-3D-FLAT-TRIANGLE '(0 1 0)) (SEND <gtm:terminal> :3D-FLAT-TRIANGLE '(0 1 0))
Draw a flat-shaded triangle from the last two locations of the 3D cursor to the given point, in the current 3D color. Leave the 3D cursor at the new point. Argument is a list '(X Y Z) of floats or ints.
This is a new-style 3D call. Use of this call is strongly discouraged, however, and it may be phased out shortly. Build a GRAPHIC-RELATION and draw it with a :DRAW message to a camera, instead.