Blast 1.1.4. See docs/release_notes.txt.v1.1.4_rc1

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diff --git a/sdk/extensions/authoringCommon/source/NvBlastExtAuthoringInternalCommon.h b/sdk/extensions/authoringCommon/source/NvBlastExtAuthoringInternalCommon.h
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
+
+
+#ifndef NVBLASTINTERNALCOMMON_H
+#define NVBLASTINTERNALCOMMON_H
+#include "NvBlastExtAuthoringTypes.h"
+#include <algorithm>
+
+using namespace physx;
+
+namespace Nv
+{
+namespace Blast
+{
+
+/**
+Edge representation with index of parent facet
+*/
+struct EdgeWithParent
+{
+	uint32_t s, e; // Starting and ending vertices
+	uint32_t parent; // Parent facet index
+	EdgeWithParent() : s(0), e(0), parent(0) {}
+	EdgeWithParent(uint32_t s, uint32_t e, uint32_t p) : s(s), e(e), parent(p) {}
+};
+
+
+/**
+Comparator for sorting edges according to parent facet number.
+*/
+struct EdgeComparator
+{
+	bool operator()(const EdgeWithParent& a, const EdgeWithParent& b) const
+	{
+		if (a.parent == b.parent)
+		{
+			if (a.s == b.s)
+			{
+				return a.e < b.e;
+			}
+			else
+			{
+				return a.s < b.s;
+			}
+		}
+		else
+		{
+			return a.parent < b.parent;
+		}
+	}
+};
+
+
+/**
+Vertex projection direction flag.
+*/
+enum ProjectionDirections
+{
+	YZ_PLANE = 1 << 1,
+	XY_PLANE = 1 << 2,
+	ZX_PLANE = 1 << 3,
+
+	OPPOSITE_WINDING = 1 << 4
+};
+
+/**
+Computes best direction to project points.
+*/
+NV_FORCE_INLINE ProjectionDirections getProjectionDirection(const physx::PxVec3& normal)
+{
+	float maxv = std::max(std::abs(normal.x), std::max(std::abs(normal.y), std::abs(normal.z)));
+	ProjectionDirections retVal;
+	if (maxv == std::abs(normal.x))
+	{
+		retVal = YZ_PLANE;
+		if (normal.x < 0) retVal = (ProjectionDirections)((int)retVal | (int)OPPOSITE_WINDING);
+		return retVal;
+	}
+	if (maxv == std::abs(normal.y))
+	{
+		retVal = ZX_PLANE;
+		if (normal.y > 0) retVal = (ProjectionDirections)((int)retVal | (int)OPPOSITE_WINDING);
+		return retVal;
+	}
+	retVal = XY_PLANE;
+	if (normal.z < 0) retVal = (ProjectionDirections)((int)retVal | (int)OPPOSITE_WINDING);
+	return retVal;
+}
+
+
+/**
+Computes point projected on given axis aligned plane.
+*/
+NV_FORCE_INLINE physx::PxVec2 getProjectedPoint(const physx::PxVec3& point, ProjectionDirections dir)
+{
+	if (dir & YZ_PLANE)
+	{
+		return physx::PxVec2(point.y, point.z);
+	}
+	if (dir & ZX_PLANE)
+	{
+		return physx::PxVec2(point.x, point.z);
+	}
+	return physx::PxVec2(point.x, point.y);
+}
+
+/**
+Computes point projected on given axis aligned plane, this method is polygon-winding aware.
+*/
+NV_FORCE_INLINE physx::PxVec2 getProjectedPointWithWinding(const physx::PxVec3& point, ProjectionDirections dir)
+{
+	if (dir & YZ_PLANE)
+	{
+		if (dir & OPPOSITE_WINDING)
+		{
+			return physx::PxVec2(point.z, point.y);
+		}
+		else
+		return physx::PxVec2(point.y, point.z);
+	}
+	if (dir & ZX_PLANE)
+	{
+		if (dir & OPPOSITE_WINDING)
+		{
+			return physx::PxVec2(point.z, point.x);
+		}
+		return physx::PxVec2(point.x, point.z);
+	}
+	if (dir & OPPOSITE_WINDING)
+	{
+		return physx::PxVec2(point.y, point.x);
+	}
+	return physx::PxVec2(point.x, point.y);
+}
+
+
+
+#define MAXIMUM_EXTENT 1000 * 1000 * 1000
+#define BBOX_TEST_EPS 1e-5f 
+
+/**
+Test fattened bounding box intersetion.
+*/
+NV_INLINE bool  weakBoundingBoxIntersection(const physx::PxBounds3& aBox, const physx::PxBounds3& bBox)
+{
+	if (std::max(aBox.minimum.x, bBox.minimum.x) > std::min(aBox.maximum.x, bBox.maximum.x) + BBOX_TEST_EPS)
+		return false;
+	if (std::max(aBox.minimum.y, bBox.minimum.y) > std::min(aBox.maximum.y, bBox.maximum.y) + BBOX_TEST_EPS)
+		return false;
+	if (std::max(aBox.minimum.z, bBox.minimum.z) > std::min(aBox.maximum.z, bBox.maximum.z) + BBOX_TEST_EPS)
+		return false;
+	return true;
+}
+
+
+
+/**
+Test segment vs plane intersection. If segment intersects the plane true is returned. Point of intersection is written into 'result'.
+*/
+NV_INLINE bool getPlaneSegmentIntersection(const PxPlane& pl, const PxVec3& a, const PxVec3& b, PxVec3& result)
+{
+	float div = (b - a).dot(pl.n);
+	if (PxAbs(div) < 0.0001f)
+	{
+		if (pl.contains(a))
+		{
+			result = a;
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+	float t = (-a.dot(pl.n) - pl.d) / div;
+	if (t < 0.0f || t > 1.0f)
+	{
+		return false;
+	}
+	result = (b - a) * t + a;
+	return true;
+}
+
+
+#define POS_COMPARISON_OFFSET 1e-5f
+#define NORM_COMPARISON_OFFSET 1e-3f
+/**
+Vertex comparator for vertex welding.
+*/
+struct VrtComp
+{
+	bool operator()(const Vertex& a, const Vertex& b) const
+	{
+		if (a.p.x + POS_COMPARISON_OFFSET < b.p.x) return true;
+		if (a.p.x - POS_COMPARISON_OFFSET > b.p.x) return false;
+		if (a.p.y + POS_COMPARISON_OFFSET < b.p.y) return true;
+		if (a.p.y - POS_COMPARISON_OFFSET > b.p.y) return false;
+		if (a.p.z + POS_COMPARISON_OFFSET < b.p.z) return true;
+		if (a.p.z - POS_COMPARISON_OFFSET > b.p.z) return false;
+
+		if (a.n.x + NORM_COMPARISON_OFFSET < b.n.x) return true;
+		if (a.n.x - NORM_COMPARISON_OFFSET > b.n.x) return false;
+		if (a.n.y + NORM_COMPARISON_OFFSET < b.n.y) return true;
+		if (a.n.y - NORM_COMPARISON_OFFSET > b.n.y) return false;
+		if (a.n.z + NORM_COMPARISON_OFFSET < b.n.z) return true;
+		if (a.n.z - NORM_COMPARISON_OFFSET > b.n.z) return false;
+
+
+		if (a.uv[0].x + NORM_COMPARISON_OFFSET < b.uv[0].x) return true;
+		if (a.uv[0].x - NORM_COMPARISON_OFFSET > b.uv[0].x) return false;
+		if (a.uv[0].y + NORM_COMPARISON_OFFSET < b.uv[0].y) return true;
+		return false;
+	};
+};
+
+/**
+Vertex comparator for vertex welding (not accounts normal and uv parameters of vertice).
+*/
+struct VrtPositionComparator
+{
+	bool operator()(const physx::PxVec3& a, const physx::PxVec3& b) const
+	{
+		if (a.x + POS_COMPARISON_OFFSET < b.x) return true;
+		if (a.x - POS_COMPARISON_OFFSET > b.x) return false;
+		if (a.y + POS_COMPARISON_OFFSET < b.y) return true;
+		if (a.y - POS_COMPARISON_OFFSET > b.y) return false;
+		if (a.z + POS_COMPARISON_OFFSET < b.z) return true;
+		if (a.z - POS_COMPARISON_OFFSET > b.z) return false;
+		return false;
+	};
+	bool operator()(const Vertex& a, const Vertex& b) const
+	{
+		return operator()(a.p, b.p);
+	};
+};
+
+}	// namespace Blast
+}	// namespace Nv
+
+#endif
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