Android Open Source - android_cubism Cubism Model Explosion

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License

The source code is released under:

Apache License

Java Source Code

/*
   Copyright 2012 Harri Smatt//from   w  w  w. j av  a 2  s  .  c  o  m

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
 */

package fi.harism.cubism;

import java.util.Arrays;
import java.util.Comparator;

import android.util.FloatMath;

public class CubismModelExplosion implements CubismRenderer.Model {

  private Cube[] mCubes;

  public CubismModelExplosion(int cubeSize) {
    float cubeScale = 1f / cubeSize;
    int cubeCount = cubeSize * cubeSize * 2 + cubeSize * (cubeSize - 2) * 2
        + (cubeSize - 2) * (cubeSize - 2) * 2;

    int idx = 0;
    mCubes = new Cube[cubeCount];
    for (int x = 0; x < cubeSize; ++x) {
      for (int y = 0; y < cubeSize; ++y) {
        for (int z = 0; z < cubeSize;) {
          mCubes[idx] = new Cube();
          mCubes[idx].setScale(cubeScale);

          float t = 2.0f * cubeScale;
          float tx = x * t + cubeScale - 1f;
          float ty = y * t + cubeScale - 1f;
          float tz = z * t + cubeScale - 1f;

          mCubes[idx].mPositionSource[0] = tx;
          mCubes[idx].mPositionSource[1] = ty;
          mCubes[idx].mPositionSource[2] = tz;

          mCubes[idx].mPositionTarget[0] = tx + tx
              * (float) (3 * Math.random());
          mCubes[idx].mPositionTarget[1] = ty + ty
              * (float) (3 * Math.random());
          mCubes[idx].mPositionTarget[2] = tz + tz
              * (float) (3 * Math.random());

          mCubes[idx].mRotationTarget[0] = (float) (Math.random() * 720 - 360);
          mCubes[idx].mRotationTarget[1] = (float) (Math.random() * 720 - 360);
          mCubes[idx].mRotationTarget[2] = (float) (Math.random() * 720 - 360);

          ++idx;

          if (x > 0 && y > 0 && x < cubeSize - 1 && y < cubeSize - 1) {
            z += cubeSize - 1;
          } else {
            ++z;
          }
        }
      }
    }

    float gravityX = 3.0f;
    float gravityY = 3.0f;
    float gravityZ = 3.0f;
    for (Cube cube : mCubes) {
      float dx = cube.mPositionSource[0] - gravityX;
      float dy = cube.mPositionSource[1] - gravityY;
      float dz = cube.mPositionSource[2] - gravityZ;
      cube.mDistanceFromGravity = FloatMath.sqrt(dx * dx + dy * dy + dz
          * dz);
    }
    Arrays.sort(mCubes, new Comparator<Cube>() {
      @Override
      public int compare(Cube c0, Cube c1) {
        return c0.mDistanceFromGravity < c1.mDistanceFromGravity ? -1
            : 1;
      }
    });
  }

  @Override
  public CubismCube[] getCubes() {
    return mCubes;
  }

  @Override
  public int getRenderMode() {
    return MODE_SHADOWMAP;
  }

  @Override
  public void setInterpolation(float t) {
    for (int i = 0; i < mCubes.length; ++i) {
      float tt = t * (1f - (float) i / mCubes.length);
      tt = tt * tt * (3 - 2 * tt);

      Cube cube = mCubes[i];

      CubismUtils.interpolateV(cube.mPosition, cube.mPositionSource,
          cube.mPositionTarget, tt);
      CubismUtils.interpolateV(cube.mRotation, cube.mRotationSource,
          cube.mRotationTarget, tt);

      cube.setTranslate(cube.mPosition[0], cube.mPosition[1],
          cube.mPosition[2]);
      cube.setRotate(cube.mRotation[0], cube.mRotation[1],
          cube.mRotation[2]);
    }
  }

  private class Cube extends CubismCube {
    public float mDistanceFromGravity;
    public final float[] mPosition = new float[3];
    public final float[] mPositionSource = new float[3];
    public final float[] mPositionTarget = new float[3];
    public final float[] mRotation = new float[3];
    public final float[] mRotationSource = new float[3];
    public final float[] mRotationTarget = new float[3];
  }

}

Java Source Code List

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