typedef struct {
float radius;
int nverts;
int nchips;
MAV_surfaceParams *sp;
MAV_matrix matrix;
void *userdef;
} MAV_sphere;
When rendered, nverts vertices are used to facet the curved surface of the sphere 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.