Android Open Source - pong-android Fps Counter

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Back to project page pong-android.

License

The source code is released under:

MIT License

Java Source Code

package me.zamecnik.android.pong;
/*from w  w w .ja  v  a  2s  . c  om*/
import android.widget.TextView;

public class FpsCounter {
  private static final int MIN_FPS_DRAW_PERIOD_MILLIS = 200;
  private static final double SMOOTHING_COEFFICIENT = 0.1;

  private final TextView textView;
  private final ScalarExpSmoother fpsSmoother = new ScalarExpSmoother(
    SMOOTHING_COEFFICIENT);

  private long lastFpsDrawTime;

  public FpsCounter(TextView textView) {
    this.textView = textView;
  }

  public void updateFps(double fps) {
    final double smoothedFps = fpsSmoother.smooth(fps);
    long now = System.currentTimeMillis();

    boolean canDrawFps = now - lastFpsDrawTime > MIN_FPS_DRAW_PERIOD_MILLIS;
    if (canDrawFps) {
      textView.post(new Runnable() {
        public void run() {
          textView.setText(String.format("FPS: %.2f", smoothedFps));
        }
      });
      lastFpsDrawTime = now;
    }
  }
}

Java Source Code List

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