typedef struct { float radius; float height; int nverts; int nchips; MAV_surfaceParams *sp; MAV_matrix matrix; void *userdef; } MAV_ellipse;
When rendered, nverts vertices are used to facet the curved surface of the ellipse around the Z axis, and nchips vertices around the X axis from -90 to 90 degrees. Both values are only applicable if they are greater than two and mav_opt_curveLOD is not set.