Android Open Source - Sertimus Grass Strands

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License

The source code is released under:

GNU General Public License

Java Source Code

/*  Sertimus - A live wallpaper featuring a cute Chao.
  /*w  w  w.  ja  v a 2  s  .c o  m*/
    Copyright (C) 2013  Kevin Negrin

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */

/*  GrassStrands.java - Object representing strands of a grass whose animation
 *  is tweened through Matrices. */

package gameaddict30.wallpaper.sertimus.objects;

import gameaddict30.wallpaper.sertimus.MainCanvas;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;

public class GrassStrands extends LiveObject {
  private final float skewFactor = 0.01f;
  private final int maxFrames = 20;
  
  private int animationTimeline = 0;
  private Bitmap skewedImage[];

  public GrassStrands(MainCanvas c) {
    super(c, "images/grasstips_optimized.png");
    loadImageResource();
    
    // TODO Auto-generated constructor stub
    x = (int)(Math.random() * (c.getWidth()+1-(width*2)));
    y = (int)(Math.random() * (c.getHeight()+1-(height*2)));
    
    offsetX = -1*(width/2);
    offsetY = -1*height;
  }

  @Override
  public void updateObject() {
      animationTimeline++;
    if (animationTimeline >= maxFrames)
      animationTimeline = 0;
  }

  @Override
  public void drawObject(Canvas c) {
    c.drawBitmap(skewedImage[animationTimeline], x-(offsetX+animationTimeline), y+offsetY, null);
  }
  
  public void loadImageResource() {
    image = Bitmap.createScaledBitmap(image, 64, 64, false);
    width = image.getWidth();
    height = image.getHeight();
    
    skewedImage = new Bitmap[maxFrames];
    
    for (int x=0; x < skewedImage.length; x++) {
      Matrix manipMat = new Matrix();
      manipMat.setSkew(skewFactor*x, 0);
      skewedImage[x] = Bitmap.createBitmap(image, 0, 0, image.getWidth(), image.getHeight(), manipMat, true);
    }
    
    image.recycle();
  }
}

Java Source Code List

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