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, 129 deletions

diff --git a/thirdparty/bullet/LinearMath/btGrahamScan2dConvexHull.h b/thirdparty/bullet/LinearMath/btGrahamScan2dConvexHull.h
deleted file mode 100644
index 0fcb285971..0000000000
--- a/thirdparty/bullet/LinearMath/btGrahamScan2dConvexHull.h
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
-Bullet Continuous Collision Detection and Physics Library
-Copyright (c) 2011 Advanced Micro Devices, Inc.  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 GRAHAM_SCAN_2D_CONVEX_HULL_H
-#define GRAHAM_SCAN_2D_CONVEX_HULL_H
-
-#include "btVector3.h"
-#include "btAlignedObjectArray.h"
-
-struct GrahamVector3 : public btVector3
-{
-	GrahamVector3(const btVector3& org, int orgIndex)
-		: btVector3(org),
-		  m_orgIndex(orgIndex)
-	{
-	}
-	btScalar m_angle;
-	int m_orgIndex;
-};
-
-struct btAngleCompareFunc
-{
-	btVector3 m_anchor;
-	btAngleCompareFunc(const btVector3& anchor)
-		: m_anchor(anchor)
-	{
-	}
-	bool operator()(const GrahamVector3& a, const GrahamVector3& b) const
-	{
-		if (a.m_angle != b.m_angle)
-			return a.m_angle < b.m_angle;
-		else
-		{
-			btScalar al = (a - m_anchor).length2();
-			btScalar bl = (b - m_anchor).length2();
-			if (al != bl)
-				return al < bl;
-			else
-			{
-				return a.m_orgIndex < b.m_orgIndex;
-			}
-		}
-	}
-};
-
-inline void GrahamScanConvexHull2D(btAlignedObjectArray<GrahamVector3>& originalPoints, btAlignedObjectArray<GrahamVector3>& hull, const btVector3& normalAxis)
-{
-	btVector3 axis0, axis1;
-	btPlaneSpace1(normalAxis, axis0, axis1);
-
-	if (originalPoints.size() <= 1)
-	{
-		for (int i = 0; i < originalPoints.size(); i++)
-			hull.push_back(originalPoints[0]);
-		return;
-	}
-	//step1 : find anchor point with smallest projection on axis0 and move it to first location
-	for (int i = 0; i < originalPoints.size(); i++)
-	{
-		//		const btVector3& left = originalPoints[i];
-		//		const btVector3& right = originalPoints[0];
-		btScalar projL = originalPoints[i].dot(axis0);
-		btScalar projR = originalPoints[0].dot(axis0);
-		if (projL < projR)
-		{
-			originalPoints.swap(0, i);
-		}
-	}
-
-	//also precompute angles
-	originalPoints[0].m_angle = -1e30f;
-	for (int i = 1; i < originalPoints.size(); i++)
-	{
-		btVector3 ar = originalPoints[i] - originalPoints[0];
-		btScalar ar1 = axis1.dot(ar);
-		btScalar ar0 = axis0.dot(ar);
-		if (ar1 * ar1 + ar0 * ar0 < FLT_EPSILON)
-		{
-			originalPoints[i].m_angle = 0.0f;
-		}
-		else
-		{
-			originalPoints[i].m_angle = btAtan2Fast(ar1, ar0);
-		}
-	}
-
-	//step 2: sort all points, based on 'angle' with this anchor
-	btAngleCompareFunc comp(originalPoints[0]);
-	originalPoints.quickSortInternal(comp, 1, originalPoints.size() - 1);
-
-	int i;
-	for (i = 0; i < 2; i++)
-		hull.push_back(originalPoints[i]);
-
-	//step 3: keep all 'convex' points and discard concave points (using back tracking)
-	for (; i != originalPoints.size(); i++)
-	{
-		bool isConvex = false;
-		while (!isConvex && hull.size() > 1)
-		{
-			btVector3& a = hull[hull.size() - 2];
-			btVector3& b = hull[hull.size() - 1];
-			isConvex = btCross(a - b, a - originalPoints[i]).dot(normalAxis) > 0;
-			if (!isConvex)
-				hull.pop_back();
-			else
-				hull.push_back(originalPoints[i]);
-		}
-
-		if (hull.size() == 1)
-		{
-			hull.push_back(originalPoints[i]);
-		}
-	}
-}
-
-#endif  //GRAHAM_SCAN_2D_CONVEX_HULL_H