gleScrew.3gle man page
gleScrew — Draws screw-type shapes.
void gleScrew (int ncp, gleDouble contour, gleDouble cont_normal, gleDouble up, gleDouble startz, gleDouble endz, gleDouble twist);
number of contour points
2D contour normals
up vector for contour
start of segment
end of segment
number of rotations
Draws screw-type shapes. Takes a contour, and extrudes it along the z-axis, from a start z value of startz to an end z-value of endz. During the extrusion, it will spin the contour along the contour origin by twist degrees.
Linas Vepstas (firstname.lastname@example.org)