initial commit, 4.5 stable

thirdparty/jolt_physics/Jolt/Physics/Collision/CastConvexVsTriangles.h

@@ -0,0 +1,46 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <Jolt/Physics/Collision/Shape/ConvexShape.h>
+#include <Jolt/Physics/Collision/ShapeCast.h>
+
+JPH_NAMESPACE_BEGIN
+
+/// Collision detection helper that casts a convex object vs one or more triangles
+class JPH_EXPORT CastConvexVsTriangles
+{
+public:
+	/// Constructor
+	/// @param inShapeCast The shape to cast against the triangles and its start and direction
+	/// @param inShapeCastSettings Settings for performing the cast
+	/// @param inScale Local space scale for the shape to cast against (scales relative to its center of mass).
+	/// @param inCenterOfMassTransform2 Is the center of mass transform of shape 2 (excluding scale), this is used to provide a transform to the shape cast result so that local quantities can be transformed into world space.
+	/// @param inSubShapeIDCreator1 Class that tracks the current sub shape ID for the casting shape
+	/// @param ioCollector The collector that receives the results.
+									CastConvexVsTriangles(const ShapeCast &inShapeCast, const ShapeCastSettings &inShapeCastSettings, Vec3Arg inScale, Mat44Arg inCenterOfMassTransform2, const SubShapeIDCreator &inSubShapeIDCreator1, CastShapeCollector &ioCollector);
+
+	/// Cast convex object with a single triangle
+	/// @param inV0 , inV1 , inV2: CCW triangle vertices
+	/// @param inActiveEdges bit 0 = edge v0..v1 is active, bit 1 = edge v1..v2 is active, bit 2 = edge v2..v0 is active
+	/// An active edge is an edge that is not connected to another triangle in such a way that it is impossible to collide with the edge
+	/// @param inSubShapeID2 The sub shape ID for the triangle
+	void							Cast(Vec3Arg inV0, Vec3Arg inV1, Vec3Arg inV2, uint8 inActiveEdges, const SubShapeID &inSubShapeID2);
+
+protected:
+	const ShapeCast &				mShapeCast;
+	const ShapeCastSettings &		mShapeCastSettings;
+	const Mat44 &					mCenterOfMassTransform2;
+	Vec3							mScale;
+	SubShapeIDCreator				mSubShapeIDCreator1;
+	CastShapeCollector &			mCollector;
+
+private:
+	ConvexShape::SupportBuffer		mSupportBuffer;						///< Buffer that holds the support function of the cast shape
+	const ConvexShape::Support *	mSupport = nullptr;					///< Support function of the cast shape
+	float							mScaleSign;							///< Sign of the scale, -1 if object is inside out, 1 if not
+};
+
+JPH_NAMESPACE_END