Android Open Source - DivisionByZero Target Rectangle

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From Project

Back to project page DivisionByZero.

License

The source code is released under:

Apache License

Java Source Code

package com.ggstudios.divisionbyzero;
/*  w w w.j a va2  s.co m*/
import com.ggstudios.utils.BitmapUtils;
import com.ggstudios.utils.BufferUtils;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

/**
 * The main purpose of this class is to provide a way to draw attention
 * to something on screen through the use of some UI element.
 * @author iDunnololz
 *
 */
public class TargetRectangle extends PictureBox implements Updatable{
  // used for animation...
  private static final float DURATION = 0.3f;
  private boolean state = false;
  private float time = 0f;
  
  /**
   * Used for drawing the rectangle...
   */
  Paint paint;
  
  public TargetRectangle() {
    super(0, 0);
    
    paint = new Paint();
  }
  
  public void setColor(int c) {
    paint.setColor(c);
  }
  
  public void setStrokeWidth(float w) {
    paint.setStrokeWidth(w);
  }
    
  public void setBounds(RectF rect) {
    w = rect.right - rect.left;
    h = rect.bottom - rect.top;
    x = rect.left + w/2f;
    y = rect.top + h/2f;
  }
  
  public void build() {
    Bitmap bmp = Bitmap.createBitmap((int)w, (int)h, Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(bmp);
    paint.setStyle(Paint.Style.STROKE);
    c.drawRect(0, 0, w, h, paint);
    setTextureHandle(BitmapUtils.loadBitmap(bmp));
    
    float halfW = w / 2f;
    float halfH = h / 2f;
    float[] rect = {
      -halfW, -halfH,
      halfW, -halfH,
      -halfW, halfH,
      halfW, halfH,
    };
    
    handle = BufferUtils.copyToBuffer(rect);
  }
  
  @Override
  public void draw(float _x, float _y) {
    super.draw(0, 0);
  }

  @Override
  public boolean update(float dt) {
    time += dt;
    if(time > DURATION) {
      state = !state;
      if(state) {
        setScale(1.05f);
      } else {
        setScale(1f);
      }
      time -= DURATION;
    }
    return true;
  }

  @Override
  public void refresh() {
    build();
  }
}

Java Source Code List

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