Remove unused Bullet module and thirdparty code

It has been disabled in `master` since one year (#45852) and our plan
is for Bullet, and possibly other thirdparty physics engines, to be
implemented via GDExtension so that they can be selected by the users
who need them.

1 files changed, 0 insertions, 174 deletions

diff --git a/thirdparty/bullet/LinearMath/btGeometryUtil.cpp b/thirdparty/bullet/LinearMath/btGeometryUtil.cpp
deleted file mode 100644
index 115e3eab81..0000000000
--- a/thirdparty/bullet/LinearMath/btGeometryUtil.cpp
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
-Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans  http://continuousphysics.com/Bullet/
-
-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 "btGeometryUtil.h"
-
-/*
-  Make sure this dummy function never changes so that it
-  can be used by probes that are checking whether the
-  library is actually installed.
-*/
-extern "C"
-{
-	void btBulletMathProbe();
-
-	void btBulletMathProbe() {}
-}
-
-bool btGeometryUtil::isPointInsidePlanes(const btAlignedObjectArray<btVector3>& planeEquations, const btVector3& point, btScalar margin)
-{
-	int numbrushes = planeEquations.size();
-	for (int i = 0; i < numbrushes; i++)
-	{
-		const btVector3& N1 = planeEquations[i];
-		btScalar dist = btScalar(N1.dot(point)) + btScalar(N1[3]) - margin;
-		if (dist > btScalar(0.))
-		{
-			return false;
-		}
-	}
-	return true;
-}
-
-bool btGeometryUtil::areVerticesBehindPlane(const btVector3& planeNormal, const btAlignedObjectArray<btVector3>& vertices, btScalar margin)
-{
-	int numvertices = vertices.size();
-	for (int i = 0; i < numvertices; i++)
-	{
-		const btVector3& N1 = vertices[i];
-		btScalar dist = btScalar(planeNormal.dot(N1)) + btScalar(planeNormal[3]) - margin;
-		if (dist > btScalar(0.))
-		{
-			return false;
-		}
-	}
-	return true;
-}
-
-bool notExist(const btVector3& planeEquation, const btAlignedObjectArray<btVector3>& planeEquations);
-
-bool notExist(const btVector3& planeEquation, const btAlignedObjectArray<btVector3>& planeEquations)
-{
-	int numbrushes = planeEquations.size();
-	for (int i = 0; i < numbrushes; i++)
-	{
-		const btVector3& N1 = planeEquations[i];
-		if (planeEquation.dot(N1) > btScalar(0.999))
-		{
-			return false;
-		}
-	}
-	return true;
-}
-
-void btGeometryUtil::getPlaneEquationsFromVertices(btAlignedObjectArray<btVector3>& vertices, btAlignedObjectArray<btVector3>& planeEquationsOut)
-{
-	const int numvertices = vertices.size();
-	// brute force:
-	for (int i = 0; i < numvertices; i++)
-	{
-		const btVector3& N1 = vertices[i];
-
-		for (int j = i + 1; j < numvertices; j++)
-		{
-			const btVector3& N2 = vertices[j];
-
-			for (int k = j + 1; k < numvertices; k++)
-			{
-				const btVector3& N3 = vertices[k];
-
-				btVector3 planeEquation, edge0, edge1;
-				edge0 = N2 - N1;
-				edge1 = N3 - N1;
-				btScalar normalSign = btScalar(1.);
-				for (int ww = 0; ww < 2; ww++)
-				{
-					planeEquation = normalSign * edge0.cross(edge1);
-					if (planeEquation.length2() > btScalar(0.0001))
-					{
-						planeEquation.normalize();
-						if (notExist(planeEquation, planeEquationsOut))
-						{
-							planeEquation[3] = -planeEquation.dot(N1);
-
-							//check if inside, and replace supportingVertexOut if needed
-							if (areVerticesBehindPlane(planeEquation, vertices, btScalar(0.01)))
-							{
-								planeEquationsOut.push_back(planeEquation);
-							}
-						}
-					}
-					normalSign = btScalar(-1.);
-				}
-			}
-		}
-	}
-}
-
-void btGeometryUtil::getVerticesFromPlaneEquations(const btAlignedObjectArray<btVector3>& planeEquations, btAlignedObjectArray<btVector3>& verticesOut)
-{
-	const int numbrushes = planeEquations.size();
-	// brute force:
-	for (int i = 0; i < numbrushes; i++)
-	{
-		const btVector3& N1 = planeEquations[i];
-
-		for (int j = i + 1; j < numbrushes; j++)
-		{
-			const btVector3& N2 = planeEquations[j];
-
-			for (int k = j + 1; k < numbrushes; k++)
-			{
-				const btVector3& N3 = planeEquations[k];
-
-				btVector3 n2n3;
-				n2n3 = N2.cross(N3);
-				btVector3 n3n1;
-				n3n1 = N3.cross(N1);
-				btVector3 n1n2;
-				n1n2 = N1.cross(N2);
-
-				if ((n2n3.length2() > btScalar(0.0001)) &&
-					(n3n1.length2() > btScalar(0.0001)) &&
-					(n1n2.length2() > btScalar(0.0001)))
-				{
-					//point P out of 3 plane equations:
-
-					//	d1 ( N2 * N3 ) + d2 ( N3 * N1 ) + d3 ( N1 * N2 )
-					//P =  -------------------------------------------------------------------------
-					//   N1 . ( N2 * N3 )
-
-					btScalar quotient = (N1.dot(n2n3));
-					if (btFabs(quotient) > btScalar(0.000001))
-					{
-						quotient = btScalar(-1.) / quotient;
-						n2n3 *= N1[3];
-						n3n1 *= N2[3];
-						n1n2 *= N3[3];
-						btVector3 potentialVertex = n2n3;
-						potentialVertex += n3n1;
-						potentialVertex += n1n2;
-						potentialVertex *= quotient;
-
-						//check if inside, and replace supportingVertexOut if needed
-						if (isPointInsidePlanes(planeEquations, potentialVertex, btScalar(0.01)))
-						{
-							verticesOut.push_back(potentialVertex);
-						}
-					}
-				}
-			}
-		}
-	}
-}