gov/nasa/worldwind/render/Material.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.render;
   8
   9 import gov.nasa.worldwind.util.Logging;
  10
  11 import java.awt.*;
  12
  13 /**
  14  * @author tag
  15  * @version $Id: Material.java 2677 2007-08-25 06:41:38Z tgaskins $
  16  */
  17 public class Material
  18 {
  19     public static final int SPECULAR = 0;
  20     public static final int DIFFUSE = 1;
  21     public static final int AMBIENT = 2;
  22     public static final int EMISSION = 3;
  23
  24     public static final Material WHITE = new Material(new Color(0.9f, 0.9f, 0.9f, 0.0f), new Color(0.8f, 0.8f, 0.8f,
  25         0.0f), new Color(0.2f, 0.2f, 0.2f, 0.0f), new Color(0.0f, 0.0f, 0.0f, 0.0f), 20f);
  26
  27     public static final Material RED = new Material(new Color(0.75f, 0.0f, 0.0f, 0.0f), new Color(0.8f, 0.0f, 0.0f,
  28         0.0f), new Color(0.2f, 0.0f, 0.0f, 0.0f), new Color(0.0f, 0.0f, 0.0f, 0.0f), 80f);
  29
  30     public static final Material GREEN = new Material(new Color(0.0f, 0.75f, 0.0f, 0.0f), new Color(0.0f, 0.8f, 0.0f,
  31         0.0f), new Color(0.0f, 0.2f, 0.0f, 0.0f), new Color(0.0f, 0.0f, 0.0f, 0.0f), 20f);
  32
  33     public static final Material BLUE = new Material(new Color(0.0f, 0.0f, 0.75f, 0.0f), new Color(0.0f, 0.0f, 0.8f,
  34         0.0f), new Color(0.0f, 0.0f, 0.2f, 0.0f), new Color(0.0f, 0.0f, 0.0f, 0.0f), 20f);
  35
  36     public static final Material YELLOW = new Material(new Color(0.75f, 0.75f, 0.55f, 0.0f), new Color(0.8f, 0.8f, 0.0f,
  37         0.0f), new Color(0.2f, 0.2f, 0.01f, 0.0f), new Color(0.0f, 0.0f, 0.0f, 0.0f), 20f);
  38
  39     private final Color specular;
  40     private final Color diffuse;
  41     private final Color ambient;
  42     private final Color emission;
  43     private final float shininess;
  44
  45     /**
  46      * @param specular
  47      * @param diffuse
  48      * @param ambient
  49      * @param emission
  50      * @param shininess
  51      * @throws IllegalArgumentException if <code>specular</code>, <code>diffuse</code>, <code>ambient</code> or
  52      *                                  <code>emission</code> is null
  53      */
  54     public Material(Color specular, Color diffuse, Color ambient, Color emission, float shininess)
  55     {
  56         if (specular == null || diffuse == null || ambient == null || emission == null)
  57         {
  58             String msg = Logging.getMessage("nullValue.ColorIsNull");
  59             Logging.logger().severe(msg);
  60             throw new IllegalArgumentException(msg);
  61         }
  62
  63         this.specular = specular;
  64         this.diffuse = diffuse;
  65         this.ambient = ambient;
  66         this.emission = emission;
  67         this.shininess = shininess;
  68     }
  69
  70     public Material(Color color)
  71     {
  72         if (color == null)
  73         {
  74             String msg = Logging.getMessage("nullValue.ColorIsNull");
  75             Logging.logger().severe(msg);
  76             throw new IllegalArgumentException(msg);
  77         }
  78
  79         this.specular = new Color(0.75f, 0.75f, 0.55f, 0.0f);
  80         this.diffuse = color;
  81         this.ambient = new Color(0.2f, 0.2f, 0.01f, 0.0f);
  82         this.emission = new Color(0.0f, 0.0f, 0.0f, 0.0f);
  83         this.shininess = 20f;
  84     }
  85
  86     public Color getSpecular()
  87     {
  88         return this.specular;
  89     }
  90
  91     public Color getDiffuse()
  92     {
  93         return this.diffuse;
  94     }
  95
  96     public Color getAmbient()
  97     {
  98         return this.ambient;
  99     }
 100
 101     public Color getEmission()
 102     {
 103         return this.emission;
 104     }
 105
 106     public float getShininess()
 107     {
 108         return this.shininess;
 109     }
 110
 111     public void apply(javax.media.opengl.GL gl, int face)
 112     {
 113         float[] rgba = new float[4];
 114
 115         gl.glMaterialfv(face, javax.media.opengl.GL.GL_SPECULAR, this.specular.getRGBComponents(rgba), 0);
 116         gl.glMaterialfv(face, javax.media.opengl.GL.GL_DIFFUSE, this.diffuse.getRGBComponents(rgba), 0);
 117         gl.glMaterialfv(face, javax.media.opengl.GL.GL_AMBIENT, this.ambient.getRGBComponents(rgba), 0);
 118         gl.glMaterialf(face, javax.media.opengl.GL.GL_SHININESS, this.shininess);
 119         gl.glMaterialfv(face, javax.media.opengl.GL.GL_EMISSION, this.emission.getRGBComponents(rgba), 0);
 120     }
 121 }