texturedplane.java

java3D game engine design of the source [three-dimensionalvirtualrealitynetworkprogram] - "virtual

// TexturedPlane.java
// Andrew Davison, March 2003, [e-mail]

/* Creates a single quad array of 4 vertices with a texture mapping.

   This is a non-animation version of ImagesSeries from /Shooter3D
*/

import javax.vecmath.*;
import javax.media.j3d.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.image.*;


public class TexturedPlane extends Shape3D 
{
  private static final int NUM_VERTS = 4;


  public TexturedPlane(Point3f p1, Point3f p2, Point3f p3, Point3f p4,
							String fnm) 
  { createGeometry(p1, p2, p3, p4);
    createAppearance(fnm);
  } // end of TexturedPlane()


  private void createGeometry(Point3f p1, Point3f p2, Point3f p3, Point3f p4)
  {
    QuadArray plane = new QuadArray(NUM_VERTS, 
					GeometryArray.COORDINATES |
					GeometryArray.TEXTURE_COORDINATE_2 );

    // anti-clockwise from bottom left
    plane.setCoordinate(0, p1);
    plane.setCoordinate(1, p2);
    plane.setCoordinate(2, p3);
    plane.setCoordinate(3, p4);

    TexCoord2f q = new TexCoord2f();
    q.set(0.0f, 0.0f);    
    plane.setTextureCoordinate(0, 0, q);
    q.set(1.0f, 0.0f);   
    plane.setTextureCoordinate(0, 1, q);
    q.set(1.0f, 1.0f);    
    plane.setTextureCoordinate(0, 2, q);
    q.set(0.0f, 1.0f);   
    plane.setTextureCoordinate(0, 3, q);  

    setGeometry(plane);
  }  // end of createGeometry()


  private void createAppearance(String fnm)
  {
    System.out.println("Loading texture from " + fnm);
    TextureLoader loader = new TextureLoader(fnm, null);
    ImageComponent2D im = loader.getImage();
    if(im == null)
      System.out.println("Load failed for texture: " + fnm);
    else {
      Appearance app = new Appearance();

      // blended transparency so texture can be irregular
      TransparencyAttributes tra = new TransparencyAttributes();
      tra.setTransparencyMode( TransparencyAttributes.BLENDED );
      app.setTransparencyAttributes( tra );

      // Create a two dimensional texture
      // Set the texture from the first loaded image
      Texture2D texture = new Texture2D(Texture2D.BASE_LEVEL, Texture.RGBA,
								im.getWidth(), im.getHeight());
      texture.setImage(0, im);
      app.setTexture(texture);
   
      setAppearance(app);
    }
  }  // end of createAppearance()


} // end of TexturedPlane class