swaptm(3G)swaptm(3G)NAMEswaptm - toggles the triangle mesh register pointer
FORTRAN 77 SPECIFICATION
subroutine swaptmPARAMETERS
none
DESCRIPTION
The triangle mesh hardware stores two vertices. After each new vertex is
specified (and a triangle comprising the new vertex and the two stored
vertices is drawn), one of the stored vertices is replaced by the new
vertex. The value of a two-value pointer determines which vertex is
replaced. This pointer is toggled after each vertex, causing alternate
stored vertices to be replaced. swaptm toggles the pointer without
specification of a new vertex (and no triangle is drawn).
SEE ALSO
bgntme, v
NOTE
Operation is undefined if swaptm is called before the second vertex of a
triangle mesh is specified.
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