/*
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* Java port of Bullet (c) 2008 Martin Dvorak <jezek2@advel.cz>
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*
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* Bullet Continuous Collision Detection and Physics Library
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* Copyright (c) 2003-2008 Erwin Coumans http://www.bulletphysics.com/
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*
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* This software is provided 'as-is', without any express or implied warranty.
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* In no event will the authors be held liable for any damages arising from
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* the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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package com.bulletphysics.collision.narrowphase;
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import com.bulletphysics.linearmath.IDebugDraw;
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import com.bulletphysics.linearmath.Transform;
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import javax.vecmath.Vector3f;
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/**
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* This interface is made to be used by an iterative approach to do TimeOfImpact calculations.<p>
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*
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* This interface allows to query for closest points and penetration depth between two (convex) objects
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* the closest point is on the second object (B), and the normal points from the surface on B towards A.
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* distance is between closest points on B and closest point on A. So you can calculate closest point on A
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* by taking <code>closestPointInA = closestPointInB + distance * normalOnSurfaceB</code>.
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*
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* @author jezek2
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*/
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public abstract class DiscreteCollisionDetectorInterface implements java.io.Serializable {
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public static abstract class Result implements java.io.Serializable {
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///setShapeIdentifiers provides experimental support for per-triangle material / custom material combiner
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public abstract void setShapeIdentifiers(int partId0, int index0, int partId1, int index1);
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public abstract void addContactPoint(Vector3f normalOnBInWorld, Vector3f pointInWorld, float depth);
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}
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public static class ClosestPointInput implements java.io.Serializable {
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public final Transform transformA = new Transform();
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public final Transform transformB = new Transform();
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public float maximumDistanceSquared;
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//btStackAlloc* m_stackAlloc;
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public ClosestPointInput() {
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init();
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}
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public void init() {
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maximumDistanceSquared = Float.MAX_VALUE;
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}
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}
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/**
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* Give either closest points (distance > 0) or penetration (distance)
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* the normal always points from B towards A.
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*/
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public final void getClosestPoints(ClosestPointInput input,Result output, IDebugDraw debugDraw) {
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getClosestPoints(input, output, debugDraw, false);
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}
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/**
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* Give either closest points (distance > 0) or penetration (distance)
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* the normal always points from B towards A.
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*/
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public abstract void getClosestPoints(ClosestPointInput input,Result output, IDebugDraw debugDraw, boolean swapResults);
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}
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