resource.Material.java Source code

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Here is the source code for resource.Material.java

Source

/*
 *    Herzog3D - 3D Real Time Strategy game.
 *   Copyright (C) 2005  Shannon Smith
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package resource;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;

/**
 * @author Shannon Smith
 */
public class Material {

    public static final int MAX_TEXTURE_UNITS = 4;
    private static FloatBuffer scratch = ByteBuffer.allocateDirect(16).order(ByteOrder.nativeOrder())
            .asFloatBuffer();
    public static final Material DEFAULT_WHITE = new Material("WHITE");
    public static final Material DEFAULT_BLUE = new Material("BLUE");
    public static final Material DEFAULT_RED = new Material("RED");
    public static final Material DEFAULT_GREEN = new Material("GREEN");
    public static final float[] DEFAULT_DIFFUSE = new float[] { 1.0f, 1.0f, 1.0f, 1.0f };
    public static final float[] DEFAULT_SPECULAR = new float[] { 1.0f, 1.0f, 1.0f, 1.0f };
    public static final float DEFAULT_SHININESS = 10.0f;

    static {
        DEFAULT_WHITE.setDiffuse(new float[] { 1.0f, 1.0f, 1.0f, 1.0f });
        DEFAULT_WHITE.setSpecular(new float[] { 1.0f, 1.0f, 1.0f, 1.0f });
        DEFAULT_WHITE.setShininess(10.0f);
        DEFAULT_BLUE.setDiffuse(new float[] { 0.0f, 0.0f, 1.0f, 1.0f });
        DEFAULT_BLUE.setSpecular(new float[] { 0.0f, 0.0f, 1.0f, 1.0f });
        DEFAULT_BLUE.setShininess(10.0f);
        DEFAULT_RED.setDiffuse(new float[] { 1.0f, 0.0f, 0.0f, 1.0f });
        DEFAULT_RED.setSpecular(new float[] { 1.0f, 0.0f, 0.0f, 1.0f });
        DEFAULT_RED.setShininess(10.0f);
        DEFAULT_GREEN.setDiffuse(new float[] { 0.0f, 1.0f, 0.0f, 1.0f });
        DEFAULT_GREEN.setSpecular(new float[] { 0.0f, 1.0f, 0.0f, 1.0f });
        DEFAULT_GREEN.setShininess(10.0f);
    }

    private float[] specular;
    private float[] diffuse;
    private float shininess;
    private final String name;
    private final Texture[] textures;

    public Material(String name) {
        this.name = name;
        textures = new Texture[MAX_TEXTURE_UNITS];
        diffuse = DEFAULT_DIFFUSE;
        specular = DEFAULT_SPECULAR;
        shininess = DEFAULT_SHININESS;
    }

    public void setTexture(int unit, Texture tex) {
        textures[unit] = tex;
    }

    public String getName() {
        return name;
    }

    public void setSpecular(float[] specular) {
        this.specular = specular;
    }

    public void setDiffuse(float[] diffuse) {
        this.diffuse = diffuse;
    }

    public void setShininess(float shininess) {
        this.shininess = shininess;
    }

    public void bind() {
        GL13.glActiveTexture(GL13.GL_TEXTURE0);
        if (textures[0] == null) {
            GL11.glDisable(GL11.GL_TEXTURE_2D);
        } else {
            GL11.glEnable(GL11.GL_TEXTURE_2D);
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, textures[0].getID());
            //            GL11.glTexEnvi(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_MODULATE);
        }
        GL13.glActiveTexture(GL13.GL_TEXTURE1);
        if (textures[1] == null) {
            GL11.glDisable(GL11.GL_TEXTURE_2D);
        } else {
            GL11.glEnable(GL11.GL_TEXTURE_2D);
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, textures[1].getID());
            //            GL11.glTexEnvi(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_MODULATE);
        }

        GL13.glActiveTexture(GL13.GL_TEXTURE0);
        // And set the materails
        GL11.glMaterial(GL11.GL_FRONT, GL11.GL_SPECULAR, get(specular));
        GL11.glMaterial(GL11.GL_FRONT, GL11.GL_DIFFUSE, get(diffuse));
        GL11.glMaterial(GL11.GL_FRONT, GL11.GL_SHININESS, get(shininess));
    }

    public Texture getTexture(int unit) {
        return textures[unit];
    }

    public static FloatBuffer get(float[] vals) {
        scratch.rewind();
        scratch.put(vals);
        scratch.rewind();
        return scratch;
    }

    public static FloatBuffer get(float val) {
        scratch.rewind();
        scratch.put(val);
        scratch.rewind();
        return scratch;
    }

}