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
  11 import javax.media.opengl.*;
  12 import java.util.*;
  13 import java.awt.*;
  14
  15 /**
  16  * @author tag
  17  * @version $Id: RenderableLayer.java 1435 2007-04-11 02:03:35Z tgaskins $
  18  */
  19 public class RenderableLayer extends AbstractLayer
  20 {
  21     private Collection<Renderable> renderables = new ArrayList<Renderable>();
  22     private final PickSupport pickSupport = new PickSupport();
  23     private final Layer delegateOwner;
  24
  25     public RenderableLayer()
  26     {
  27         this.delegateOwner = null;
  28     }
  29
  30     public RenderableLayer(Layer delegateOwner)
  31     {
  32         this.delegateOwner = delegateOwner;
  33     }
  34
  35     public void setRenderables(Iterable<Renderable> shapeIterator)
  36     {
  37         this.renderables = new ArrayList<Renderable>();
  38
  39         if (shapeIterator == null)
  40             return;
  41
  42         for (Renderable renderable : shapeIterator)
  43         {
  44             this.renderables.add(renderable);
  45         }
  46     }
  47
  48     public void addRenderable(Renderable renderable)
  49     {
  50         if (renderable == null)
  51         {
  52             String msg = WorldWind.retrieveErrMsg("nullValue.Shape");
  53             WorldWind.logger().log(java.util.logging.Level.FINE, msg);
  54             throw new IllegalArgumentException(msg);
  55         }
  56
  57         this.renderables.add(renderable);
  58     }
  59
  60     public void removeRenderable(Renderable renderable)
  61     {
  62         if (renderable == null)
  63         {
  64             String msg = WorldWind.retrieveErrMsg("nullValue.Shape");
  65             WorldWind.logger().log(java.util.logging.Level.FINE, msg);
  66             throw new IllegalArgumentException(msg);
  67         }
  68
  69         this.renderables.remove(renderable);
  70     }
  71
  72     public Collection<Renderable> getRenderables()
  73     {
  74         return this.renderables;
  75     }
  76
  77     public void dispose()
  78     {
  79         for (Renderable renderable : this.renderables)
  80         {
  81             if (renderable instanceof Disposable)
  82                 ((Disposable) renderable).dispose();
  83         }
  84     }
  85
  86     @Override
  87     protected void doPick(DrawContext dc, java.awt.Point pickPoint)
  88     {
  89         this.pickSupport.clearPickList();
  90         this.pickSupport.beginPicking(dc);
  91
  92         for (Renderable renderable : this.renderables)
  93         {
  94             float[] inColor = new float[4];
  95             dc.getGL().glGetFloatv(GL.GL_CURRENT_COLOR, inColor, 0);
  96             Color color = dc.getUniquePickColor();
  97             dc.getGL().glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
  98
  99             renderable.render(dc);
 100
 101             dc.getGL().glColor4fv(inColor, 0);
 102
 103             if (renderable instanceof Locatable)
 104             {
 105                 this.pickSupport.addPickableObject(color.getRGB(), renderable,
 106                     ((Locatable) renderable).getPosition(), false);
 107             }
 108             else
 109             {
 110                 this.pickSupport.addPickableObject(color.getRGB(), renderable);
 111             }
 112         }
 113
 114         this.pickSupport.resolvePick(dc, pickPoint, this.delegateOwner != null ? this.delegateOwner : this);
 115         this.pickSupport.endPicking(dc);
 116     }
 117
 118     @Override
 119     protected void doRender(DrawContext dc)
 120     {
 121         for (Renderable renderable : this.renderables)
 122         {
 123             renderable.render(dc);
 124         }
 125     }
 126
 127     public Layer getDelegateOwner()
 128     {
 129         return delegateOwner;
 130     }
 131
 132     @Override
 133     public String toString()
 134     {
 135         return WorldWind.retrieveErrMsg("layers.RenderableLayer.Name");
 136     }
 137 }