/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* 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 com.badlogic.gdx.graphics;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.utils.TimeUtils;
/** A simple helper class to log the frames per seconds achieved. Just invoke the {@link #log()} method in your rendering method.
* The output will be logged once per second.
*
* @author mzechner */
public class FPSLogger {
long startTime;
public FPSLogger () {
startTime = TimeUtils.nanoTime();
}
/** Logs the current frames per second to the console. */
public void log () {
if (TimeUtils.nanoTime() - startTime > 1000000000) /* 1,000,000,000ns == one second */{
Gdx.app.log("FPSLogger", "fps: " + Gdx.graphics.getFramesPerSecond());
startTime = TimeUtils.nanoTime();
}
}
}