/*
 * @(#)nurbs_surfaces.java 0.1 99/11/5
 *
 * jGL 3-D graphics library for Java
 * Copyright (c) 1999 Robin Bing-Yu Chen (robin@is.s.u-tokyo.ac.jp)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version. the GNU Lesser
 * General Public License should be included with this distribution
 * in the file LICENSE.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 */

package jgl.glu;

import jgl.GLU;

/**
 * nurbs_surfaces is one of the GLU NURBS class of JavaGL 2.1.
 *
 * @version 	0.1, 5 Nov 1999
 * @author 	Robin Bing-Yu Chen
 */

public class nurbs_surfaces {

    public nurbs_surface geom    = new nurbs_surface ();
    public nurbs_surface color   = new nurbs_surface ();
    public nurbs_surface normal  = new nurbs_surface ();
    public nurbs_surface texture = new nurbs_surface ();

    public int fill_knot (nurbs_knot geom_s_knot,    nurbs_knot geom_t_knot,
			  nurbs_knot color_s_knot,   nurbs_knot color_t_knot,
			  nurbs_knot normal_s_knot,  nurbs_knot normal_t_knot,
			  nurbs_knot texture_s_knot, nurbs_knot texture_t_knot){
	int err;

        err = geom_s_knot.fill (geom.s);
        if (err != GLU.GLU_NO_ERROR) { return err; }
        err = geom_t_knot.fill (geom.t);
        if (err != GLU.GLU_NO_ERROR) { return err; }

        if (color.type != GLU.GLU_INVALID_ENUM) {
            err = color_s_knot.fill (color.s);
            if (err != GLU.GLU_NO_ERROR) { return err; }
            err = color_t_knot.fill (color.t);
            if (err != GLU.GLU_NO_ERROR) { return err; }
        }

	if (normal.type != GLU.GLU_INVALID_ENUM) {
            err = normal_s_knot.fill (normal.s);
            if (err != GLU.GLU_NO_ERROR) { return err; }
            err = normal_t_knot.fill (normal.t);
            if (err != GLU.GLU_NO_ERROR) { return err; }
        }

        if (texture.type != GLU.GLU_INVALID_ENUM) {
            err = texture_s_knot.fill (texture.s);
            if (err != GLU.GLU_NO_ERROR) { return err; }
            err = texture_t_knot.fill (texture.t);
            if (err != GLU.GLU_NO_ERROR) { return err; }
        }

        return GLU.GLU_NO_ERROR;
    }

    public int test () {
        int err = geom.test ();
        if (err != GLU.GLU_NO_ERROR) { return (err); }
        if (color.type != GLU.GLU_INVALID_ENUM) {
            err = color.test ();
            if (err != GLU.GLU_NO_ERROR) { return (err); }
	}
        if (normal.type != GLU.GLU_INVALID_ENUM) {
            err = normal.test ();
            if (err != GLU.GLU_NO_ERROR) { return (err); }
        }
        if (texture.type != GLU.GLU_INVALID_ENUM) {
            err = texture.test ();
            if (err != GLU.GLU_NO_ERROR) { return (err); }
        }
        return GLU.GLU_NO_ERROR;
    }

}