/*
 *   __               .__       .__  ._____.           
 * _/  |_  _______  __|__| ____ |  | |__\_ |__   ______
 * \   __\/  _ \  \/  /  |/ ___\|  | |  || __ \ /  ___/
 *  |  | (  <_> >    <|  \  \___|  |_|  || \_\ \\___ \ 
 *  |__|  \____/__/\_ \__|\___  >____/__||___  /____  >
 *                   \/       \/             \/     \/ 
 *
 * Copyright (c) 2006-2011 Karsten Schmidt
 * 
 * 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 (at your option) any later version.
 * 
 * http://creativecommons.org/licenses/LGPL/2.1/
 * 
 * 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.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

package toxi.geom.mesh;

/**
 *
 * @author tux
 */
public class MaterialiseSTLColorModel implements STLColorModel {

    /**
     *
     */
    protected int baseColor;

    /**
     *
     */
    protected boolean useFacetColors;

    /**
     *
     * @param rgb
     */
    public MaterialiseSTLColorModel(int rgb) {
        this(rgb, false);
    }

    /**
     *
     * @param rgb
     * @param enableFacets
     */
    public MaterialiseSTLColorModel(int rgb, boolean enableFacets) {
        baseColor = rgb;
        useFacetColors = enableFacets;
    }

    /**
     * @param enabled
     *            the useFacetColors to set
     */
    public void enableFacetColors(boolean enabled) {
        this.useFacetColors = enabled;
    }

    /**
     * @return the useFacetColors
     */
    public boolean facetColorsEnabled() {
        return useFacetColors;
    }

    /*
     * (non-Javadoc)
     * 
     * @see toxi.geom.mesh.STLColorModel#formatHeader(byte[])
     */

    /**
     *
     * @param header
     */
    
    @Override
    public void formatHeader(byte[] header) {
        char[] col = new char[] { 'C', 'O', 'L', 'O', 'R', '=' };
        for (int i = 0; i < col.length; i++) {
            header[i] = (byte) col[i];
        }
        header[6] = (byte) (baseColor >> 16 & 0xff);
        header[7] = (byte) (baseColor >> 8 & 0xff);
        header[8] = (byte) (baseColor & 0xff);
        header[9] = (byte) (baseColor >>> 24);
    }

    /*
     * (non-Javadoc)
     * 
     * @see toxi.geom.mesh.STLColorModel#formatRGB(int)
     */

    /**
     *
     * @param rgb
     * @return
     */
    
    @Override
    public int formatRGB(int rgb) {
        int col15bits = (rgb >> 19 & 0x1f);
        col15bits |= (rgb >> 11 & 0x1f) << 5;
        col15bits |= (rgb >> 3 & 0x1f) << 10;
        if (!useFacetColors) {
            // set bit 15 to indicate use of base color
            col15bits |= 0x8000;
        }
        return col15bits;
    }

    /**
     * @return the baseColor
     */
    public int getBaseColor() {
        return baseColor;
    }

    /**
     *
     * @return
     */
    @Override
    public int getDefaultRGB() {
        // set bit 15 to indicate use of base color
        return 0x8000;
    }

    /**
     * @param baseColor
     *            the baseColor to set
     */
    public void setBaseColor(int baseColor) {
        this.baseColor = baseColor;
    }
}