Android Open Source - jmini3d Object3d

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Back to project page jmini3d.

License

The source code is released under:

Copyright 2012 Mobialia http://www.mobialia.com/ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to ...

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Java Source Code

package jmini3d;
/*w  w  w  . ja va2s .  co  m*/
import jmini3d.geometry.Geometry;
import jmini3d.material.Material;

public class Object3d {

  public Geometry geometry3d;
  public Material material;

  public boolean visible = true;
  public boolean clearDepthAfterDraw = false;

  private Vector3 position;

  public float[] modelViewMatrix = new float[16];
  public float[] normalMatrix = new float[9];

  private float rotationMatrix[];
  private float scaleMatrix[];
  private float[] translationMatrix = new float[16];

  float scale = 1;

  private boolean needsMatrixUpdate = true;

  public Object3d(Geometry geometry3d, Material material) {
    this.geometry3d = geometry3d;
    this.material = material;

    position = new Vector3();
  }

  public boolean isVisible() {
    return visible;
  }

  public void setVisible(boolean visible) {
    this.visible = visible;
  }

  public Vector3 getPosition() {
    return position;
  }

  public void setPosition(Vector3 position) {
    this.position.setAllFrom(position);
    needsMatrixUpdate = true;
  }

  public void setPosition(float x, float y, float z) {
    this.position.setAll(x, y, z);
    needsMatrixUpdate = true;
  }

  public Geometry getGeometry3d() {
    return geometry3d;
  }

  public void setRotationMatrix(Vector3 direction, Vector3 up, Vector3 side) {
    if (rotationMatrix == null) {
      rotationMatrix = new float[16];
    }
    MatrixUtils.rotate(rotationMatrix, direction, up, side);

    needsMatrixUpdate = true;
  }

  public void setScale(float scale) {
    if (this.scale != scale) {
      this.scale = scale;
      if (scaleMatrix == null) {
        scaleMatrix = new float[16];
        MatrixUtils.copyMatrix(MatrixUtils.IDENTITY4, scaleMatrix);
      }
      scaleMatrix[0] = scale;
      scaleMatrix[5] = scale;
      scaleMatrix[10] = scale;
      needsMatrixUpdate = true;
    }
  }

  public void updateMatrices() {
    if (needsMatrixUpdate) {
      needsMatrixUpdate = false;

      MatrixUtils.copyMatrix(MatrixUtils.IDENTITY4, modelViewMatrix);

      if (position != null) {
        MatrixUtils.translate(translationMatrix, position);
        MatrixUtils.multiply(modelViewMatrix, translationMatrix, modelViewMatrix);
      }

      if (rotationMatrix != null) {
        MatrixUtils.multiply(modelViewMatrix, rotationMatrix, modelViewMatrix);
      }

      if (scale != 1 && scaleMatrix != null) {
        MatrixUtils.multiply(modelViewMatrix, scaleMatrix, modelViewMatrix);
      }

      normalMatrix = MatrixUtils.toInverseMat3(modelViewMatrix, normalMatrix);
      if (normalMatrix != null) {
        normalMatrix = MatrixUtils.transpose(normalMatrix, normalMatrix);
      }
    }
  }
}

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