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diff --git a/thirdparty/bullet/Bullet3Common/b3TransformUtil.h b/thirdparty/bullet/Bullet3Common/b3TransformUtil.h
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--- a/thirdparty/bullet/Bullet3Common/b3TransformUtil.h
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-/*
-Copyright (c) 2003-2013 Gino van den Bergen / Erwin Coumans  http://bulletphysics.org
-
-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.
-*/
-
-#ifndef B3_TRANSFORM_UTIL_H
-#define B3_TRANSFORM_UTIL_H
-
-#include "b3Transform.h"
-#define B3_ANGULAR_MOTION_THRESHOLD b3Scalar(0.5) * B3_HALF_PI
-
-B3_FORCE_INLINE b3Vector3 b3AabbSupport(const b3Vector3& halfExtents, const b3Vector3& supportDir)
-{
-	return b3MakeVector3(supportDir.getX() < b3Scalar(0.0) ? -halfExtents.getX() : halfExtents.getX(),
-						 supportDir.getY() < b3Scalar(0.0) ? -halfExtents.getY() : halfExtents.getY(),
-						 supportDir.getZ() < b3Scalar(0.0) ? -halfExtents.getZ() : halfExtents.getZ());
-}
-
-/// Utils related to temporal transforms
-class b3TransformUtil
-{
-public:
-	static void integrateTransform(const b3Transform& curTrans, const b3Vector3& linvel, const b3Vector3& angvel, b3Scalar timeStep, b3Transform& predictedTransform)
-	{
-		predictedTransform.setOrigin(curTrans.getOrigin() + linvel * timeStep);
-		//	#define QUATERNION_DERIVATIVE
-#ifdef QUATERNION_DERIVATIVE
-		b3Quaternion predictedOrn = curTrans.getRotation();
-		predictedOrn += (angvel * predictedOrn) * (timeStep * b3Scalar(0.5));
-		predictedOrn.normalize();
-#else
-		//Exponential map
-		//google for "Practical Parameterization of Rotations Using the Exponential Map", F. Sebastian Grassia
-
-		b3Vector3 axis;
-		b3Scalar fAngle = angvel.length();
-		//limit the angular motion
-		if (fAngle * timeStep > B3_ANGULAR_MOTION_THRESHOLD)
-		{
-			fAngle = B3_ANGULAR_MOTION_THRESHOLD / timeStep;
-		}
-
-		if (fAngle < b3Scalar(0.001))
-		{
-			// use Taylor's expansions of sync function
-			axis = angvel * (b3Scalar(0.5) * timeStep - (timeStep * timeStep * timeStep) * (b3Scalar(0.020833333333)) * fAngle * fAngle);
-		}
-		else
-		{
-			// sync(fAngle) = sin(c*fAngle)/t
-			axis = angvel * (b3Sin(b3Scalar(0.5) * fAngle * timeStep) / fAngle);
-		}
-		b3Quaternion dorn(axis.getX(), axis.getY(), axis.getZ(), b3Cos(fAngle * timeStep * b3Scalar(0.5)));
-		b3Quaternion orn0 = curTrans.getRotation();
-
-		b3Quaternion predictedOrn = dorn * orn0;
-		predictedOrn.normalize();
-#endif
-		predictedTransform.setRotation(predictedOrn);
-	}
-
-	static void calculateVelocityQuaternion(const b3Vector3& pos0, const b3Vector3& pos1, const b3Quaternion& orn0, const b3Quaternion& orn1, b3Scalar timeStep, b3Vector3& linVel, b3Vector3& angVel)
-	{
-		linVel = (pos1 - pos0) / timeStep;
-		b3Vector3 axis;
-		b3Scalar angle;
-		if (orn0 != orn1)
-		{
-			calculateDiffAxisAngleQuaternion(orn0, orn1, axis, angle);
-			angVel = axis * angle / timeStep;
-		}
-		else
-		{
-			angVel.setValue(0, 0, 0);
-		}
-	}
-
-	static void calculateDiffAxisAngleQuaternion(const b3Quaternion& orn0, const b3Quaternion& orn1a, b3Vector3& axis, b3Scalar& angle)
-	{
-		b3Quaternion orn1 = orn0.nearest(orn1a);
-		b3Quaternion dorn = orn1 * orn0.inverse();
-		angle = dorn.getAngle();
-		axis = b3MakeVector3(dorn.getX(), dorn.getY(), dorn.getZ());
-		axis[3] = b3Scalar(0.);
-		//check for axis length
-		b3Scalar len = axis.length2();
-		if (len < B3_EPSILON * B3_EPSILON)
-			axis = b3MakeVector3(b3Scalar(1.), b3Scalar(0.), b3Scalar(0.));
-		else
-			axis /= b3Sqrt(len);
-	}
-
-	static void calculateVelocity(const b3Transform& transform0, const b3Transform& transform1, b3Scalar timeStep, b3Vector3& linVel, b3Vector3& angVel)
-	{
-		linVel = (transform1.getOrigin() - transform0.getOrigin()) / timeStep;
-		b3Vector3 axis;
-		b3Scalar angle;
-		calculateDiffAxisAngle(transform0, transform1, axis, angle);
-		angVel = axis * angle / timeStep;
-	}
-
-	static void calculateDiffAxisAngle(const b3Transform& transform0, const b3Transform& transform1, b3Vector3& axis, b3Scalar& angle)
-	{
-		b3Matrix3x3 dmat = transform1.getBasis() * transform0.getBasis().inverse();
-		b3Quaternion dorn;
-		dmat.getRotation(dorn);
-
-		///floating point inaccuracy can lead to w component > 1..., which breaks
-		dorn.normalize();
-
-		angle = dorn.getAngle();
-		axis = b3MakeVector3(dorn.getX(), dorn.getY(), dorn.getZ());
-		axis[3] = b3Scalar(0.);
-		//check for axis length
-		b3Scalar len = axis.length2();
-		if (len < B3_EPSILON * B3_EPSILON)
-			axis = b3MakeVector3(b3Scalar(1.), b3Scalar(0.), b3Scalar(0.));
-		else
-			axis /= b3Sqrt(len);
-	}
-};
-
-///The b3ConvexSeparatingDistanceUtil can help speed up convex collision detection
-///by conservatively updating a cached separating distance/vector instead of re-calculating the closest distance
-class b3ConvexSeparatingDistanceUtil
-{
-	b3Quaternion m_ornA;
-	b3Quaternion m_ornB;
-	b3Vector3 m_posA;
-	b3Vector3 m_posB;
-
-	b3Vector3 m_separatingNormal;
-
-	b3Scalar m_boundingRadiusA;
-	b3Scalar m_boundingRadiusB;
-	b3Scalar m_separatingDistance;
-
-public:
-	b3ConvexSeparatingDistanceUtil(b3Scalar boundingRadiusA, b3Scalar boundingRadiusB)
-		: m_boundingRadiusA(boundingRadiusA),
-		  m_boundingRadiusB(boundingRadiusB),
-		  m_separatingDistance(0.f)
-	{
-	}
-
-	b3Scalar getConservativeSeparatingDistance()
-	{
-		return m_separatingDistance;
-	}
-
-	void updateSeparatingDistance(const b3Transform& transA, const b3Transform& transB)
-	{
-		const b3Vector3& toPosA = transA.getOrigin();
-		const b3Vector3& toPosB = transB.getOrigin();
-		b3Quaternion toOrnA = transA.getRotation();
-		b3Quaternion toOrnB = transB.getRotation();
-
-		if (m_separatingDistance > 0.f)
-		{
-			b3Vector3 linVelA, angVelA, linVelB, angVelB;
-			b3TransformUtil::calculateVelocityQuaternion(m_posA, toPosA, m_ornA, toOrnA, b3Scalar(1.), linVelA, angVelA);
-			b3TransformUtil::calculateVelocityQuaternion(m_posB, toPosB, m_ornB, toOrnB, b3Scalar(1.), linVelB, angVelB);
-			b3Scalar maxAngularProjectedVelocity = angVelA.length() * m_boundingRadiusA + angVelB.length() * m_boundingRadiusB;
-			b3Vector3 relLinVel = (linVelB - linVelA);
-			b3Scalar relLinVelocLength = relLinVel.dot(m_separatingNormal);
-			if (relLinVelocLength < 0.f)
-			{
-				relLinVelocLength = 0.f;
-			}
-
-			b3Scalar projectedMotion = maxAngularProjectedVelocity + relLinVelocLength;
-			m_separatingDistance -= projectedMotion;
-		}
-
-		m_posA = toPosA;
-		m_posB = toPosB;
-		m_ornA = toOrnA;
-		m_ornB = toOrnB;
-	}
-
-	void initSeparatingDistance(const b3Vector3& separatingVector, b3Scalar separatingDistance, const b3Transform& transA, const b3Transform& transB)
-	{
-		m_separatingDistance = separatingDistance;
-
-		if (m_separatingDistance > 0.f)
-		{
-			m_separatingNormal = separatingVector;
-
-			const b3Vector3& toPosA = transA.getOrigin();
-			const b3Vector3& toPosB = transB.getOrigin();
-			b3Quaternion toOrnA = transA.getRotation();
-			b3Quaternion toOrnB = transB.getRotation();
-			m_posA = toPosA;
-			m_posB = toPosB;
-			m_ornA = toOrnA;
-			m_ornB = toOrnB;
-		}
-	}
-};
-
-#endif  //B3_TRANSFORM_UTIL_H