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JBullet - Java port of Bullet Physics Library
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/*
 * Java port of Bullet (c) 2008 Martin Dvorak 
 *
 * Bullet Continuous Collision Detection and Physics Library
 * Copyright (c) 2003-2008 Erwin Coumans  http://www.bulletphysics.com/
 *
 * This software is provided 'as-is', without any express or implied warranty.
 * In no event will the authors be held liable for any damages arising from
 * the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose, 
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 * 
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */

package com.bulletphysics;

import com.bulletphysics.util.ArrayPool;
import com.bulletphysics.util.ObjectPool;
import cz.advel.stack.Stack;

/**
 * Bullet global settings and constants.
 * 
 * @author jezek2
 */
public class BulletGlobals {
	
	public static final boolean DEBUG = false;
	
	public static final float CONVEX_DISTANCE_MARGIN = 0.04f;
	public static final float FLT_EPSILON = 1.19209290e-07f;
	public static final float SIMD_EPSILON = FLT_EPSILON;
	
	public static final float SIMD_2_PI = 6.283185307179586232f;
	public static final float SIMD_PI = SIMD_2_PI * 0.5f;
	public static final float SIMD_HALF_PI = SIMD_2_PI * 0.25f;
	public static final float SIMD_RADS_PER_DEG = SIMD_2_PI / 360f;
	public static final float SIMD_DEGS_PER_RAD = 360f / SIMD_2_PI;
	public static final float SIMD_INFINITY = Float.MAX_VALUE;

	////////////////////////////////////////////////////////////////////////////

	private static ThreadLocal threadLocal = new ThreadLocal() {
		@Override
		protected BulletGlobals initialValue() {
			return new BulletGlobals();
		}
	};

	private ContactDestroyedCallback gContactDestroyedCallback;
	private ContactAddedCallback gContactAddedCallback;
	private ContactProcessedCallback gContactProcessedCallback;

	private float contactBreakingThreshold = 0.02f;
	// RigidBody
	private float deactivationTime = 2f;
	private boolean disableDeactivation = false;
	
	public static ContactAddedCallback getContactAddedCallback() {
		return threadLocal.get().gContactAddedCallback;
	}

	public static void setContactAddedCallback(ContactAddedCallback callback) {
		threadLocal.get().gContactAddedCallback = callback;
	}

	public static ContactDestroyedCallback getContactDestroyedCallback() {
		return threadLocal.get().gContactDestroyedCallback;
	}

	public static void setContactDestroyedCallback(ContactDestroyedCallback callback) {
		threadLocal.get().gContactDestroyedCallback = callback;
	}

	public static ContactProcessedCallback getContactProcessedCallback() {
		return threadLocal.get().gContactProcessedCallback;
	}

	public static void setContactProcessedCallback(ContactProcessedCallback callback) {
		threadLocal.get().gContactProcessedCallback = callback;
	}
	
	////////////////////////////////////////////////////////////////////////////

	public static float getContactBreakingThreshold() {
		return threadLocal.get().contactBreakingThreshold;
	}

	public static void setContactBreakingThreshold(float threshold) {
		threadLocal.get().contactBreakingThreshold = threshold;
	}

	public static float getDeactivationTime() {
		return threadLocal.get().deactivationTime;
	}

	public static void setDeactivationTime(float time) {
		threadLocal.get().deactivationTime = time;
	}

	public static boolean isDeactivationDisabled() {
		return threadLocal.get().disableDeactivation;
	}

	public static void setDeactivationDisabled(boolean disable) {
		threadLocal.get().disableDeactivation = disable;
	}

	////////////////////////////////////////////////////////////////////////////

	/**
	 * Cleans all current thread specific settings and caches.
	 */
	public static void cleanCurrentThread() {
		threadLocal.remove();
		Stack.libraryCleanCurrentThread();
		ObjectPool.cleanCurrentThread();
		ArrayPool.cleanCurrentThread();
	}

}