Android Open Source - min3d Box

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License

The source code is released under:
MIT License
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Java Source Code

package com.min3d.lib.objectPrimitives;
/*w ww.j a v a  2  s  .  co  m*/

import com.min3d.lib.Utils;
import com.min3d.lib.core.Object3dContainer;
import com.min3d.lib.vos.Color4;

/**
 * Note how each 'face' (quad) of the box uses its own set of 4 vertices each, 
 * rather than sharing with adjacent faces.  This allows for each face to be 
 * texture mapped, normal'ed, and colored independently of the others. 
 * 
 * Object origin is center of box. 
 */
public class Box extends Object3dContainer
{
  private Color4[] _cols;
  private float _width;
  private float _height;
  private float _depth;
  

  public Box(float $width, float $height, float $depth, Color4[] $sixColor4s, Boolean $useUvs, Boolean $useNormals, Boolean $useVertexColors)
  {
    super(4*6, 2*6, $useUvs,$useNormals,$useVertexColors);
    
    _width = $width;
    _height = $height;
    _depth = $depth;
    
    if ($sixColor4s != null)
    {
      _cols = $sixColor4s;
    }
    else
    {
      _cols = new Color4[6];
      _cols[0] = new Color4(255,0,0,255);
      _cols[1] = new Color4(0,255,0,255);
      _cols[2] = new Color4(0,0,255,255);
      _cols[3] = new Color4(255,255,0,255);
      _cols[4] = new Color4(0,255,255,255);
      _cols[5] = new Color4(255,0,255,255);
    }
    
    make();
  }
  
  public Box(float $width, float $height, float $depth, Color4[] $sixColor4s)
  {
    this($width,$height,$depth, $sixColor4s, true,true,true);
  }
  
  public Box(float $width, float $height, float $depth, Color4 color)
  {
    this($width,$height,$depth, new Color4[] { color, color, color, color, color, color }, true,true,true);
  }

  public Box(float $width, float $height, float $depth)
  {
    this($width,$height,$depth, null,  true,true,true);
  }

  private void make()
  {
    float w = _width / 2f;
    float h = _height / 2f;
    float d = _depth / 2f;

    short ul, ur, lr, ll;
    
    // front
    ul = this.vertices().addVertex(-w,+h,+d,  0f,0f,  0,0,1,  _cols[0].r,_cols[0].g,_cols[0].b,_cols[0].a);
    ur = this.vertices().addVertex(+w,+h,+d,  1f,0f,  0,0,1,  _cols[0].r,_cols[0].g,_cols[0].b,_cols[0].a);
    lr = this.vertices().addVertex(+w,-h,+d,  1f,1f,  0,0,1,  _cols[0].r,_cols[0].g,_cols[0].b,_cols[0].a);
    ll = this.vertices().addVertex(-w,-h,+d,  0f,1f,  0,0,1,  _cols[0].r,_cols[0].g,_cols[0].b,_cols[0].a);
    Utils.addQuad(this, ul, ur, lr, ll);
    
    // right
    ul = this.vertices().addVertex(+w,+h,+d,  0f,0f,  1,0,0,  _cols[1].r,_cols[1].g,_cols[1].b,_cols[1].a);
    ur = this.vertices().addVertex(+w,+h,-d,  1f,0f,  1,0,0,  _cols[1].r,_cols[1].g,_cols[1].b,_cols[1].a);
    lr = this.vertices().addVertex(+w,-h,-d,  1f,1f,  1,0,0,  _cols[1].r,_cols[1].g,_cols[1].b,_cols[1].a);
    ll = this.vertices().addVertex(+w,-h,+d,  0f,1f,  1,0,0,  _cols[1].r,_cols[1].g,_cols[1].b,_cols[1].a);
    Utils.addQuad(this, ul,ur,lr,ll);

    // back
    ul = this.vertices().addVertex(+w,+h,-d,  0f,0f,  0,0,-1,  _cols[2].r,_cols[2].g,_cols[2].b,_cols[2].a);
    ur = this.vertices().addVertex(-w,+h,-d,  1f,0f,  0,0,-1,  _cols[2].r,_cols[2].g,_cols[2].b,_cols[2].a);
    lr = this.vertices().addVertex(-w,-h,-d,  1f,1f,  0,0,-1,  _cols[2].r,_cols[2].g,_cols[2].b,_cols[2].a);
    ll = this.vertices().addVertex(+w,-h,-d,  0f,1f,  0,0,-1,  _cols[2].r,_cols[2].g,_cols[2].b,_cols[2].a);
    Utils.addQuad(this, ul,ur,lr,ll);
  
    // left
    ul = this.vertices().addVertex(-w,+h,-d,  0f,0f,  -1,0,0,  _cols[3].r,_cols[3].g,_cols[3].b,_cols[3].a);
    ur = this.vertices().addVertex(-w,+h,+d,  1f,0f,  -1,0,0,  _cols[3].r,_cols[3].g,_cols[3].b,_cols[3].a);
    lr = this.vertices().addVertex(-w,-h,+d,  1f,1f,  -1,0,0,  _cols[3].r,_cols[3].g,_cols[3].b,_cols[3].a);
    ll = this.vertices().addVertex(-w,-h,-d,  0f,1f,  -1,0,0,  _cols[3].r,_cols[3].g,_cols[3].b,_cols[3].a);
    Utils.addQuad(this, ul,ur,lr,ll);
    
    // top
    ul = this.vertices().addVertex(-w,+h,-d,  0f,0f,  0,1,0,  _cols[4].r,_cols[4].g,_cols[4].b,_cols[4].a);
    ur = this.vertices().addVertex(+w,+h,-d,  1f,0f,  0,1,0,  _cols[4].r,_cols[4].g,_cols[4].b,_cols[4].a);
    lr = this.vertices().addVertex(+w,+h,+d,  1f,1f,  0,1,0,  _cols[4].r,_cols[4].g,_cols[4].b,_cols[4].a);
    ll = this.vertices().addVertex(-w,+h,+d,  0f,1f,  0,1,0,  _cols[4].r,_cols[4].g,_cols[4].b,_cols[4].a);
    Utils.addQuad(this, ul,ur,lr,ll);

    // bottom
    ul = this.vertices().addVertex(-w,-h,+d,  0f,0f,  0,-1,0,  _cols[5].r,_cols[5].g,_cols[5].b,_cols[5].a);
    ur = this.vertices().addVertex(+w,-h,+d,  1f,0f,  0,-1,0,  _cols[5].r,_cols[5].g,_cols[5].b,_cols[5].a);
    lr = this.vertices().addVertex(+w,-h,-d,  1f,1f,  0,-1,0,  _cols[5].r,_cols[5].g,_cols[5].b,_cols[5].a);
    ll = this.vertices().addVertex(-w,-h,-d,  0f,1f,  0,-1,0,  _cols[5].r,_cols[5].g,_cols[5].b,_cols[5].a);
    Utils.addQuad(this, ul,ur,lr,ll);
  }
}
Java Source Code List
