Merge pull request #12641 from AndreaCatania/bullet

Bullet physics wrapper

1 files changed, 66 insertions, 0 deletions

diff --git a/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btGjkEpaPenetrationDepthSolver.cpp b/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btGjkEpaPenetrationDepthSolver.cpp
new file mode 100644
index 0000000000..572ec36f56
--- /dev/null
+++ b/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btGjkEpaPenetrationDepthSolver.cpp
@@ -0,0 +1,66 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+EPA Copyright (c) Ricardo Padrela 2006
+
+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.
+*/
+
+#include "BulletCollision/CollisionShapes/btConvexShape.h"
+#include "btGjkEpaPenetrationDepthSolver.h"
+
+
+#include "BulletCollision/NarrowPhaseCollision/btGjkEpa2.h"
+
+bool btGjkEpaPenetrationDepthSolver::calcPenDepth( btSimplexSolverInterface& simplexSolver,
+											  const btConvexShape* pConvexA, const btConvexShape* pConvexB,
+											  const btTransform& transformA, const btTransform& transformB,
+											  btVector3& v, btVector3& wWitnessOnA, btVector3& wWitnessOnB,
+											  class btIDebugDraw* debugDraw)
+{
+
+	(void)debugDraw;
+	(void)v;
+	(void)simplexSolver;
+
+//	const btScalar				radialmargin(btScalar(0.));
+	
+	btVector3	guessVector(transformB.getOrigin()-transformA.getOrigin());
+	btGjkEpaSolver2::sResults	results;
+	
+
+	if(btGjkEpaSolver2::Penetration(pConvexA,transformA,
+								pConvexB,transformB,
+								guessVector,results))
+	
+		{
+	//	debugDraw->drawLine(results.witnesses[1],results.witnesses[1]+results.normal,btVector3(255,0,0));
+		//resultOut->addContactPoint(results.normal,results.witnesses[1],-results.depth);
+		wWitnessOnA = results.witnesses[0];
+		wWitnessOnB = results.witnesses[1];
+		v = results.normal;
+		return true;		
+		} else
+	{
+		if(btGjkEpaSolver2::Distance(pConvexA,transformA,pConvexB,transformB,guessVector,results))
+		{
+			wWitnessOnA = results.witnesses[0];
+			wWitnessOnB = results.witnesses[1];
+			v = results.normal;
+			return false;
+		}
+	}
+
+	return false;
+}
+
+