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GeometryScript: add CopyCollisionMeshesFromObject function, extracts meshed collision shapes or complex collision from various object types as a UDynamicMesh #rb none #preflight 62ffc256c85b7fef22f671cc [CL 21460263 by Ryan Schmidt in ue5-main branch]
123 lines
4.6 KiB
C++
123 lines
4.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Components/PrimitiveComponent.h"
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#include "TransformTypes.h"
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#include "TransformSequence.h"
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#include "DynamicMesh/DynamicMesh3.h"
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class UBodySetup;
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class UStaticMesh;
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struct FKAggregateGeom;
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class IInterface_CollisionDataProvider;
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namespace UE
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{
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namespace Geometry
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{
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struct FSimpleShapeSet3d;
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/**
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* Component/BodySetup collision settings (eg StaticMeshComponent) we might need to pass through the functions below
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*/
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struct MODELINGCOMPONENTS_API FComponentCollisionSettings
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{
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int32 CollisionTypeFlag = 0; // this is ECollisionTraceFlag
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bool bIsGeneratedCollision = true;
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};
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/**
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* @return true if the component type supports collision settings
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*/
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MODELINGCOMPONENTS_API bool ComponentTypeSupportsCollision(
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const UPrimitiveComponent* Component);
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/**
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* @return current Component collision settings
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*/
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MODELINGCOMPONENTS_API FComponentCollisionSettings GetCollisionSettings(
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const UPrimitiveComponent* Component);
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/**
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* Apply Transform to any Simple Collision geometry owned by Component.
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* Note that Nonuniform scaling support is very limited and will generally enlarge collision volumes.
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*/
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MODELINGCOMPONENTS_API bool TransformSimpleCollision(
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UPrimitiveComponent* Component,
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const FTransform3d& Transform);
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/**
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* Replace existing Simple Collision geometry in Component with that defined by ShapeSet,
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* and update the Component/BodySetup collision settings
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*/
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MODELINGCOMPONENTS_API bool SetSimpleCollision(
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UPrimitiveComponent* Component,
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const FSimpleShapeSet3d* ShapeSet,
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FComponentCollisionSettings CollisionSettings = FComponentCollisionSettings() );
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/**
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* Apply Transform to the existing Simple Collision geometry in Component and then append to to ShapeSetOut
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*/
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MODELINGCOMPONENTS_API bool AppendSimpleCollision(
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const UPrimitiveComponent* SourceComponent,
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FSimpleShapeSet3d* ShapeSetOut,
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const FTransform3d& Transform);
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/**
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* Apply TransformSequence (in-order) to the existing Simple Collision geometry in Component and then append to to ShapeSetOut
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*/
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MODELINGCOMPONENTS_API bool AppendSimpleCollision(
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const UPrimitiveComponent* SourceComponent,
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FSimpleShapeSet3d* ShapeSetOut,
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const TArray<FTransform3d>& TransformSeqeuence);
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/**
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* Replace existing Simple Collision geometry in BodySetup with that defined by NewGeometry,
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* and update the Component/BodySetup collision settings. Optional StaticMesh argument allows
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* for necessary updates to it and any active UStaticMeshComponent that reference it
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*/
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MODELINGCOMPONENTS_API void UpdateSimpleCollision(
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UBodySetup* BodySetup,
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const FKAggregateGeom* NewGeometry,
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UStaticMesh* StaticMesh = nullptr,
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FComponentCollisionSettings CollisionSettings = FComponentCollisionSettings());
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/**
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* Extract the simple collision geometry from AggGeom as meshes (ie spheres and capsules are tessellated) and
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* accumulate into MeshOut. TransformSequence is applied to the meshes as they are accumulated.
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* @param bSetToPerTriangleNormals if true and the mesh has a normals attribute overlay, the mesh is set to face normals, otherwise averaged vertex normals
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* @param bInitializeConvexUVs if true convex hulls have their UVs initialized to per-face planar projections, otherwise no UVs are set
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* @param PerElementMeshCallback if provided, called with each element mesh before transforming/appending to MeshOut. The int parameter is the shape type, 0=Sphere, 1=Box, 2=Capsule, 3=Convex
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*/
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MODELINGCOMPONENTS_API void ConvertSimpleCollisionToMeshes(
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const FKAggregateGeom& AggGeom,
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UE::Geometry::FDynamicMesh3& MeshOut,
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const FTransformSequence3d& TransformSeqeuence,
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int32 SphereResolution = 16,
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bool bSetToPerTriangleNormals = false,
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bool bInitializeConvexUVs = false,
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TFunction<void(int, const FDynamicMesh3&)> PerElementMeshCallback = nullptr );
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/**
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* Extract the complex collision geometry from CollisionDataProvider as a dynamic mesh.
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* TransformSequence is applied to the mesh.
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* @param bFoundMeshErrorsOut will be returned as true if potential non-manifold geometry was detected during construction (in that case some triangles will be disconnected)
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* @param bWeldEdges if true the mesh edges are welded
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* @param bSetToPerTriangleNormals if true and the mesh has a normals attribute overlay, the mesh is set to face normals, otherwise averaged vertex normals
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*/
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MODELINGCOMPONENTS_API bool ConvertComplexCollisionToMeshes(
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IInterface_CollisionDataProvider* CollisionDataProvider,
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UE::Geometry::FDynamicMesh3& MeshOut,
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const FTransformSequence3d& TransformSeqeuence,
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bool& bFoundMeshErrorsOut,
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bool bWeldEdges = true,
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bool bSetToPerTriangleNormals = false);
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} // end namespace Geometry
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} // end namespace UE
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