Provided by: libgle3-dev_3.1.0-7_amd64
gleLathe - Sweep using a Z-axis shear to create an arbitrary contour along a helical path.
void gleLathe (int ncp, gleDouble contour, gleDouble cont_normal, gleDouble up, gleDouble startRadius, /* spiral starts in x-y plane */ gleDouble drdTheta, /* change in radius per revolution */ gleDouble startZ, /* starting z value */ gleDouble dzdTheta, /* change in Z per revolution */ gleDouble startXform, /* starting contour affine xform */ gleDouble dXformdTheta, /* tangent change xform per revoln */ gleDouble startTheta, /* start angle in x-y plane */ gleDouble sweepTheta); /* degrees to spiral around */
ncp number of contour points contour 2D contour cont_normal 2D contour normals up up vector for contour startRadius spiral starts in x-y plane drdTheta change in radius per revolution startZ starting z value dzdTheta change in Z per revolution startXform starting contour affine transformation dXformdTheta tangent change xform per revolution startTheta start angle in x-y plane sweepTheta degrees to spiral around
Sweep an arbitrary contour along a helical path. The sweep will be performed as a shear along the z-axis, so that the orientation of the contour is displaced, rather than translated, as the contour is swept. The axis of the helix lies along the modeling coordinate z-axis. An affine transform can be applied as the contour is swept. For most ordinary usage, the affines should be given as NULL.
Linas Vepstas (firstname.lastname@example.org)