initial commit, 4.5 stable

thirdparty/jolt_physics/Jolt/Physics/Collision/Shape/ScaledShape.h

@@ -0,0 +1,145 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <Jolt/Physics/Collision/Shape/DecoratedShape.h>
+#include <Jolt/Physics/Collision/Shape/ScaleHelpers.h>
+
+JPH_NAMESPACE_BEGIN
+
+class SubShapeIDCreator;
+class CollideShapeSettings;
+
+/// Class that constructs a ScaledShape
+class JPH_EXPORT ScaledShapeSettings final : public DecoratedShapeSettings
+{
+	JPH_DECLARE_SERIALIZABLE_VIRTUAL(JPH_EXPORT, ScaledShapeSettings)
+
+public:
+	/// Default constructor for deserialization
+									ScaledShapeSettings() = default;
+
+	/// Constructor that decorates another shape with a scale
+									ScaledShapeSettings(const ShapeSettings *inShape, Vec3Arg inScale) : DecoratedShapeSettings(inShape), mScale(inScale) { }
+
+	/// Variant that uses a concrete shape, which means this object cannot be serialized.
+									ScaledShapeSettings(const Shape *inShape, Vec3Arg inScale) : DecoratedShapeSettings(inShape), mScale(inScale) { }
+
+	// See: ShapeSettings
+	virtual ShapeResult				Create() const override;
+
+	Vec3							mScale = Vec3(1, 1, 1);
+};
+
+/// A shape that scales a child shape in local space of that shape. The scale can be non-uniform and can even turn it inside out when one or three components of the scale are negative.
+class JPH_EXPORT ScaledShape final : public DecoratedShape
+{
+public:
+	JPH_OVERRIDE_NEW_DELETE
+
+	/// Constructor
+									ScaledShape() : DecoratedShape(EShapeSubType::Scaled) { }
+									ScaledShape(const ScaledShapeSettings &inSettings, ShapeResult &outResult);
+
+	/// Constructor that decorates another shape with a scale
+									ScaledShape(const Shape *inShape, Vec3Arg inScale)		: DecoratedShape(EShapeSubType::Scaled, inShape), mScale(inScale) { JPH_ASSERT(!ScaleHelpers::IsZeroScale(mScale)); }
+
+	/// Get the scale
+	Vec3							GetScale() const										{ return mScale; }
+
+	// See Shape::GetCenterOfMass
+	virtual Vec3					GetCenterOfMass() const override						{ return mScale * mInnerShape->GetCenterOfMass(); }
+
+	// See Shape::GetLocalBounds
+	virtual AABox					GetLocalBounds() const override;
+
+	// See Shape::GetWorldSpaceBounds
+	virtual AABox					GetWorldSpaceBounds(Mat44Arg inCenterOfMassTransform, Vec3Arg inScale) const override;
+	using Shape::GetWorldSpaceBounds;
+
+	// See Shape::GetInnerRadius
+	virtual float					GetInnerRadius() const override							{ return mScale.ReduceMin() * mInnerShape->GetInnerRadius(); }
+
+	// See Shape::GetMassProperties
+	virtual MassProperties			GetMassProperties() const override;
+
+	// See Shape::GetSubShapeTransformedShape
+	virtual TransformedShape		GetSubShapeTransformedShape(const SubShapeID &inSubShapeID, Vec3Arg inPositionCOM, QuatArg inRotation, Vec3Arg inScale, SubShapeID &outRemainder) const override;
+
+	// See Shape::GetSurfaceNormal
+	virtual Vec3					GetSurfaceNormal(const SubShapeID &inSubShapeID, Vec3Arg inLocalSurfacePosition) const override;
+
+	// See Shape::GetSupportingFace
+	virtual void					GetSupportingFace(const SubShapeID &inSubShapeID, Vec3Arg inDirection, Vec3Arg inScale, Mat44Arg inCenterOfMassTransform, SupportingFace &outVertices) const override;
+
+	// See Shape::GetSubmergedVolume
+	virtual void					GetSubmergedVolume(Mat44Arg inCenterOfMassTransform, Vec3Arg inScale, const Plane &inSurface, float &outTotalVolume, float &outSubmergedVolume, Vec3 &outCenterOfBuoyancy JPH_IF_DEBUG_RENDERER(, RVec3Arg inBaseOffset)) const override;
+
+#ifdef JPH_DEBUG_RENDERER
+	// See Shape::Draw
+	virtual void					Draw(DebugRenderer *inRenderer, RMat44Arg inCenterOfMassTransform, Vec3Arg inScale, ColorArg inColor, bool inUseMaterialColors, bool inDrawWireframe) const override;
+
+	// See Shape::DrawGetSupportFunction
+	virtual void					DrawGetSupportFunction(DebugRenderer *inRenderer, RMat44Arg inCenterOfMassTransform, Vec3Arg inScale, ColorArg inColor, bool inDrawSupportDirection) const override;
+
+	// See Shape::DrawGetSupportingFace
+	virtual void					DrawGetSupportingFace(DebugRenderer *inRenderer, RMat44Arg inCenterOfMassTransform, Vec3Arg inScale) const override;
+#endif // JPH_DEBUG_RENDERER
+
+	// See Shape::CastRay
+	virtual bool					CastRay(const RayCast &inRay, const SubShapeIDCreator &inSubShapeIDCreator, RayCastResult &ioHit) const override;
+	virtual void					CastRay(const RayCast &inRay, const RayCastSettings &inRayCastSettings, const SubShapeIDCreator &inSubShapeIDCreator, CastRayCollector &ioCollector, const ShapeFilter &inShapeFilter = { }) const override;
+
+	// See: Shape::CollidePoint
+	virtual void					CollidePoint(Vec3Arg inPoint, const SubShapeIDCreator &inSubShapeIDCreator, CollidePointCollector &ioCollector, const ShapeFilter &inShapeFilter = { }) const override;
+
+	// See: Shape::CollideSoftBodyVertices
+	virtual void					CollideSoftBodyVertices(Mat44Arg inCenterOfMassTransform, Vec3Arg inScale, const CollideSoftBodyVertexIterator &inVertices, uint inNumVertices, int inCollidingShapeIndex) const override;
+
+	// See Shape::CollectTransformedShapes
+	virtual void					CollectTransformedShapes(const AABox &inBox, Vec3Arg inPositionCOM, QuatArg inRotation, Vec3Arg inScale, const SubShapeIDCreator &inSubShapeIDCreator, TransformedShapeCollector &ioCollector, const ShapeFilter &inShapeFilter) const override;
+
+	// See Shape::TransformShape
+	virtual void					TransformShape(Mat44Arg inCenterOfMassTransform, TransformedShapeCollector &ioCollector) const override;
+
+	// See Shape::GetTrianglesStart
+	virtual void					GetTrianglesStart(GetTrianglesContext &ioContext, const AABox &inBox, Vec3Arg inPositionCOM, QuatArg inRotation, Vec3Arg inScale) const override { JPH_ASSERT(false, "Cannot call on non-leaf shapes, use CollectTransformedShapes to collect the leaves first!"); }
+
+	// See Shape::GetTrianglesNext
+	virtual int						GetTrianglesNext(GetTrianglesContext &ioContext, int inMaxTrianglesRequested, Float3 *outTriangleVertices, const PhysicsMaterial **outMaterials = nullptr) const override { JPH_ASSERT(false, "Cannot call on non-leaf shapes, use CollectTransformedShapes to collect the leaves first!"); return 0; }
+
+	// See Shape
+	virtual void					SaveBinaryState(StreamOut &inStream) const override;
+
+	// See Shape::GetStats
+	virtual Stats					GetStats() const override								{ return Stats(sizeof(*this), 0); }
+
+	// See Shape::GetVolume
+	virtual float					GetVolume() const override;
+
+	// See Shape::IsValidScale
+	virtual bool					IsValidScale(Vec3Arg inScale) const override;
+
+	// See Shape::MakeScaleValid
+	virtual Vec3					MakeScaleValid(Vec3Arg inScale) const override;
+
+	// Register shape functions with the registry
+	static void						sRegister();
+
+protected:
+	// See: Shape::RestoreBinaryState
+	virtual void					RestoreBinaryState(StreamIn &inStream) override;
+
+private:
+	// Helper functions called by CollisionDispatch
+	static void						sCollideScaledVsShape(const Shape *inShape1, const Shape *inShape2, Vec3Arg inScale1, Vec3Arg inScale2, Mat44Arg inCenterOfMassTransform1, Mat44Arg inCenterOfMassTransform2, const SubShapeIDCreator &inSubShapeIDCreator1, const SubShapeIDCreator &inSubShapeIDCreator2, const CollideShapeSettings &inCollideShapeSettings, CollideShapeCollector &ioCollector, const ShapeFilter &inShapeFilter);
+	static void						sCollideShapeVsScaled(const Shape *inShape1, const Shape *inShape2, Vec3Arg inScale1, Vec3Arg inScale2, Mat44Arg inCenterOfMassTransform1, Mat44Arg inCenterOfMassTransform2, const SubShapeIDCreator &inSubShapeIDCreator1, const SubShapeIDCreator &inSubShapeIDCreator2, const CollideShapeSettings &inCollideShapeSettings, CollideShapeCollector &ioCollector, const ShapeFilter &inShapeFilter);
+	static void						sCastScaledVsShape(const ShapeCast &inShapeCast, const ShapeCastSettings &inShapeCastSettings, const Shape *inShape, Vec3Arg inScale, const ShapeFilter &inShapeFilter, Mat44Arg inCenterOfMassTransform2, const SubShapeIDCreator &inSubShapeIDCreator1, const SubShapeIDCreator &inSubShapeIDCreator2, CastShapeCollector &ioCollector);
+	static void						sCastShapeVsScaled(const ShapeCast &inShapeCast, const ShapeCastSettings &inShapeCastSettings, const Shape *inShape, Vec3Arg inScale, const ShapeFilter &inShapeFilter, Mat44Arg inCenterOfMassTransform2, const SubShapeIDCreator &inSubShapeIDCreator1, const SubShapeIDCreator &inSubShapeIDCreator2, CastShapeCollector &ioCollector);
+
+	Vec3							mScale = Vec3(1, 1, 1);
+};
+
+JPH_NAMESPACE_END