bullet: Streamline bundling, remove extraneous src/ folder

Document version and how to extract sources in thirdparty/README.md.
Drop unnecessary CMake and Premake files.
Simplify SCsub, drop unused one.

1 files changed, 227 insertions, 0 deletions

diff --git a/thirdparty/bullet/BulletCollision/CollisionShapes/btConvexInternalShape.h b/thirdparty/bullet/BulletCollision/CollisionShapes/btConvexInternalShape.h
new file mode 100644
index 0000000000..1213b82fbe
--- /dev/null
+++ b/thirdparty/bullet/BulletCollision/CollisionShapes/btConvexInternalShape.h
@@ -0,0 +1,227 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2009 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 BT_CONVEX_INTERNAL_SHAPE_H
+#define BT_CONVEX_INTERNAL_SHAPE_H
+
+#include "btConvexShape.h"
+#include "LinearMath/btAabbUtil2.h"
+
+
+///The btConvexInternalShape is an internal base class, shared by most convex shape implementations.
+///The btConvexInternalShape uses a default collision margin set to CONVEX_DISTANCE_MARGIN.
+///This collision margin used by Gjk and some other algorithms, see also btCollisionMargin.h
+///Note that when creating small shapes (derived from btConvexInternalShape), 
+///you need to make sure to set a smaller collision margin, using the 'setMargin' API
+///There is a automatic mechanism 'setSafeMargin' used by btBoxShape and btCylinderShape
+ATTRIBUTE_ALIGNED16(class) btConvexInternalShape : public btConvexShape
+{
+
+	protected:
+
+	//local scaling. collisionMargin is not scaled !
+	btVector3	m_localScaling;
+
+	btVector3	m_implicitShapeDimensions;
+	
+	btScalar	m_collisionMargin;
+
+	btScalar	m_padding;
+
+	btConvexInternalShape();
+
+public:
+
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
+	virtual ~btConvexInternalShape()
+	{
+
+	}
+
+	virtual btVector3	localGetSupportingVertex(const btVector3& vec)const;
+
+	const btVector3& getImplicitShapeDimensions() const
+	{
+		return m_implicitShapeDimensions;
+	}
+
+	///warning: use setImplicitShapeDimensions with care
+	///changing a collision shape while the body is in the world is not recommended,
+	///it is best to remove the body from the world, then make the change, and re-add it
+	///alternatively flush the contact points, see documentation for 'cleanProxyFromPairs'
+	void	setImplicitShapeDimensions(const btVector3& dimensions)
+	{
+		m_implicitShapeDimensions = dimensions;
+	}
+
+	void	setSafeMargin(btScalar minDimension, btScalar defaultMarginMultiplier = 0.1f)
+	{
+		btScalar safeMargin = defaultMarginMultiplier*minDimension;
+		if (safeMargin < getMargin())
+		{
+			setMargin(safeMargin);
+		}
+	}
+	void	setSafeMargin(const btVector3& halfExtents, btScalar defaultMarginMultiplier = 0.1f)
+	{
+		//see http://code.google.com/p/bullet/issues/detail?id=349
+		//this margin check could could be added to other collision shapes too,
+		//or add some assert/warning somewhere
+		btScalar minDimension=halfExtents[halfExtents.minAxis()]; 		
+		setSafeMargin(minDimension, defaultMarginMultiplier);
+	}
+
+	///getAabb's default implementation is brute force, expected derived classes to implement a fast dedicated version
+	void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
+	{
+		getAabbSlow(t,aabbMin,aabbMax);
+	}
+
+
+	
+	virtual void getAabbSlow(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const;
+
+
+	virtual void	setLocalScaling(const btVector3& scaling);
+	virtual const btVector3& getLocalScaling() const 
+	{
+		return m_localScaling;
+	}
+
+	const btVector3& getLocalScalingNV() const 
+	{
+		return m_localScaling;
+	}
+
+	virtual void	setMargin(btScalar margin)
+	{
+		m_collisionMargin = margin;
+	}
+	virtual btScalar	getMargin() const
+	{
+		return m_collisionMargin;
+	}
+
+	btScalar	getMarginNV() const
+	{
+		return m_collisionMargin;
+	}
+
+	virtual int		getNumPreferredPenetrationDirections() const
+	{
+		return 0;
+	}
+	
+	virtual void	getPreferredPenetrationDirection(int index, btVector3& penetrationVector) const
+	{
+		(void)penetrationVector;
+		(void)index;
+		btAssert(0);
+	}
+
+	virtual	int	calculateSerializeBufferSize() const;
+
+	///fills the dataBuffer and returns the struct name (and 0 on failure)
+	virtual	const char*	serialize(void* dataBuffer, btSerializer* serializer) const;
+
+	
+};
+
+///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
+struct	btConvexInternalShapeData
+{
+	btCollisionShapeData	m_collisionShapeData;
+
+	btVector3FloatData	m_localScaling;
+
+	btVector3FloatData	m_implicitShapeDimensions;
+	
+	float			m_collisionMargin;
+
+	int	m_padding;
+
+};
+
+
+
+SIMD_FORCE_INLINE	int	btConvexInternalShape::calculateSerializeBufferSize() const
+{
+	return sizeof(btConvexInternalShapeData);
+}
+
+///fills the dataBuffer and returns the struct name (and 0 on failure)
+SIMD_FORCE_INLINE	const char*	btConvexInternalShape::serialize(void* dataBuffer, btSerializer* serializer) const
+{
+	btConvexInternalShapeData* shapeData = (btConvexInternalShapeData*) dataBuffer;
+	btCollisionShape::serialize(&shapeData->m_collisionShapeData, serializer);
+
+	m_implicitShapeDimensions.serializeFloat(shapeData->m_implicitShapeDimensions);
+	m_localScaling.serializeFloat(shapeData->m_localScaling);
+	shapeData->m_collisionMargin = float(m_collisionMargin);
+
+	// Fill padding with zeros to appease msan.
+	shapeData->m_padding = 0;
+
+	return "btConvexInternalShapeData";
+}
+
+
+
+
+///btConvexInternalAabbCachingShape adds local aabb caching for convex shapes, to avoid expensive bounding box calculations
+class btConvexInternalAabbCachingShape : public btConvexInternalShape
+{
+	btVector3	m_localAabbMin;
+	btVector3	m_localAabbMax;
+	bool		m_isLocalAabbValid;
+	
+protected:
+					
+	btConvexInternalAabbCachingShape();
+	
+	void setCachedLocalAabb (const btVector3& aabbMin, const btVector3& aabbMax)
+	{
+		m_isLocalAabbValid = true;
+		m_localAabbMin = aabbMin;
+		m_localAabbMax = aabbMax;
+	}
+
+	inline void getCachedLocalAabb (btVector3& aabbMin, btVector3& aabbMax) const
+	{
+		btAssert(m_isLocalAabbValid);
+		aabbMin = m_localAabbMin;
+		aabbMax = m_localAabbMax;
+	}
+
+	inline void getNonvirtualAabb(const btTransform& trans,btVector3& aabbMin,btVector3& aabbMax, btScalar margin) const
+	{
+
+		//lazy evaluation of local aabb
+		btAssert(m_isLocalAabbValid);
+		btTransformAabb(m_localAabbMin,m_localAabbMax,margin,trans,aabbMin,aabbMax);
+	}
+		
+public:
+		
+	virtual void	setLocalScaling(const btVector3& scaling);
+
+	virtual void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const;
+
+	void	recalcLocalAabb();
+
+};
+
+#endif //BT_CONVEX_INTERNAL_SHAPE_H