gov/nasa/worldwind/layers/RenderableLayer.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.layers;
   8
   9 import gov.nasa.worldwind.*;
  10 import gov.nasa.worldwind.pick.PickSupport;
  11 import gov.nasa.worldwind.render.*;
  12 import gov.nasa.worldwind.util.Logging;
  13
  14 import javax.media.opengl.GL;
  15 import java.awt.*;
  16 import java.util.*;
  17
  18 /**
  19  * @author tag
  20  * @version $Id: RenderableLayer.java 2471 2007-07-31 21:50:57Z tgaskins $
  21  */
  22 public class RenderableLayer extends AbstractLayer
  23 {
  24     private Collection<Renderable> renderables = new ArrayList<Renderable>();
  25     private final PickSupport pickSupport = new PickSupport();
  26     private final Layer delegateOwner;
  27
  28     public RenderableLayer()
  29     {
  30         this.delegateOwner = null;
  31     }
  32
  33     public RenderableLayer(Layer delegateOwner)
  34     {
  35         this.delegateOwner = delegateOwner;
  36     }
  37
  38     public void setRenderables(Iterable<Renderable> shapeIterator)
  39     {
  40         this.renderables = new ArrayList<Renderable>();
  41
  42         if (shapeIterator == null)
  43             return;
  44
  45         for (Renderable renderable : shapeIterator)
  46         {
  47             this.renderables.add(renderable);
  48         }
  49     }
  50
  51     public void addRenderable(Renderable renderable)
  52     {
  53         if (renderable == null)
  54         {
  55             String msg = Logging.getMessage("nullValue.Shape");
  56             Logging.logger().severe(msg);
  57             throw new IllegalArgumentException(msg);
  58         }
  59
  60         this.renderables.add(renderable);
  61     }
  62
  63     public void removeRenderable(Renderable renderable)
  64     {
  65         if (renderable == null)
  66         {
  67             String msg = Logging.getMessage("nullValue.Shape");
  68             Logging.logger().severe(msg);
  69             throw new IllegalArgumentException(msg);
  70         }
  71
  72         this.renderables.remove(renderable);
  73     }
  74
  75     public Collection<Renderable> getRenderables()
  76     {
  77         return this.renderables;
  78     }
  79
  80     public void dispose()
  81     {
  82         for (Renderable renderable : this.renderables)
  83         {
  84             if (renderable instanceof Disposable)
  85                 ((Disposable) renderable).dispose();
  86         }
  87     }
  88
  89     @Override
  90     protected void doPick(DrawContext dc, java.awt.Point pickPoint)
  91     {
  92         this.pickSupport.clearPickList();
  93         this.pickSupport.beginPicking(dc);
  94
  95         for (Renderable renderable : this.renderables)
  96         {
  97             float[] inColor = new float[4];
  98             dc.getGL().glGetFloatv(GL.GL_CURRENT_COLOR, inColor, 0);
  99             Color color = dc.getUniquePickColor();
 100             dc.getGL().glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
 101
 102             renderable.render(dc);
 103
 104             dc.getGL().glColor4fv(inColor, 0);
 105
 106             if (renderable instanceof Locatable)
 107             {
 108                 this.pickSupport.addPickableObject(color.getRGB(), renderable,
 109                     ((Locatable) renderable).getPosition(), false);
 110             }
 111             else
 112             {
 113                 this.pickSupport.addPickableObject(color.getRGB(), renderable);
 114             }
 115         }
 116
 117         this.pickSupport.resolvePick(dc, pickPoint, this.delegateOwner != null ? this.delegateOwner : this);
 118         this.pickSupport.endPicking(dc);
 119     }
 120
 121     @Override
 122     protected void doRender(DrawContext dc)
 123     {
 124         for (Renderable renderable : this.renderables)
 125         {
 126             renderable.render(dc);
 127         }
 128     }
 129
 130     public Layer getDelegateOwner()
 131     {
 132         return delegateOwner;
 133     }
 134
 135     @Override
 136     public String toString()
 137     {
 138         return Logging.getMessage("layers.RenderableLayer.Name");
 139     }
 140 }