Profile.java

/*
 * The MIT License (MIT)
 *
 * FXGL - JavaFX Game Library
 *
 * Copyright (c) 2015-2017 AlmasB (almaslvl@gmail.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.jbox2d.dynamics;

import org.jbox2d.common.JBoxUtils;

import java.util.List;

public class Profile {
    private static final int LONG_AVG_NUMS = 20;
    private static final float LONG_FRACTION = 1f / LONG_AVG_NUMS;
    private static final int SHORT_AVG_NUMS = 5;
    private static final float SHORT_FRACTION = 1f / SHORT_AVG_NUMS;

    public static class ProfileEntry {
        float longAvg;
        float shortAvg;
        float min;
        float max;
        float accum;

        public ProfileEntry() {
            min = Float.MAX_VALUE;
            max = -Float.MAX_VALUE;
        }

        public void record(float value) {
            longAvg = longAvg * (1 - LONG_FRACTION) + value * LONG_FRACTION;
            shortAvg = shortAvg * (1 - SHORT_FRACTION) + value * SHORT_FRACTION;
            min = JBoxUtils.min(value, min);
            max = JBoxUtils.max(value, max);
        }

        public void startAccum() {
            accum = 0;
        }

        public void accum(float value) {
            accum += value;
        }

        public void endAccum() {
            record(accum);
        }

        @Override
        public String toString() {
            return String.format("%.2f (%.2f) [%.2f,%.2f]", shortAvg, longAvg, min, max);
        }
    }

    public final ProfileEntry step = new ProfileEntry();
    public final ProfileEntry stepInit = new ProfileEntry();
    public final ProfileEntry collide = new ProfileEntry();
    public final ProfileEntry solveParticleSystem = new ProfileEntry();
    public final ProfileEntry solve = new ProfileEntry();
    public final ProfileEntry solveInit = new ProfileEntry();
    public final ProfileEntry solveVelocity = new ProfileEntry();
    public final ProfileEntry solvePosition = new ProfileEntry();
    public final ProfileEntry broadphase = new ProfileEntry();
    public final ProfileEntry solveTOI = new ProfileEntry();

    public void toDebugStrings(List<String> strings) {
        strings.add("Profile:");
        strings.add(" step: " + step);
        strings.add("  init: " + stepInit);
        strings.add("  collide: " + collide);
        strings.add("  particles: " + solveParticleSystem);
        strings.add("  solve: " + solve);
        strings.add("   solveInit: " + solveInit);
        strings.add("   solveVelocity: " + solveVelocity);
        strings.add("   solvePosition: " + solvePosition);
        strings.add("   broadphase: " + broadphase);
        strings.add("  solveTOI: " + solveTOI);
    }
}