Drawing Routines

There are variations on all these routines that end in s and also end in i.

void draw
(Coord x,Coord y,Coord z)
Draw from current graphics position to (x, y, z), a point in world coordinates.

void rdr
(Coord deltax,Coord deltay,Coord deltaz)
Relative draw. deltax, deltay, and deltaz are offsets in world units.

void draw2
(Coord x,Coord y)
Draw from current graphics position to point (x, y). (x, y) is a point in world coordinates.

void rdr2
(Coord deltax,Coord deltay)
Relative draw2. deltax and deltay are offsets in world units.