Fps.java

package com.asha.vrlib.common;

import android.util.Log;

/**
 * Created by hzqiujiadi on 16/3/13.
 * hzqiujiadi ashqalcn@gmail.com
 */
public class Fps {
    private final static String TAG = "fps";
    private int mFrameCount;
    private long mLastTimestamp;
    public void step(){
        if (mFrameCount % 120 == 0){
            long current = System.currentTimeMillis();
            if (mLastTimestamp != 0){
                float fps =  mFrameCount * 1000.0f / (current - mLastTimestamp);
                Log.w(TAG,"fps:" + fps);
            }
            mFrameCount = 0;
            mLastTimestamp = current;
        }
        mFrameCount++;
    }
}