UE::Geometry::TIntrTriangle3Triangle3< Real > Class Template Reference

#include <IntrTriangle3Triangle3.h>

Public Member Functions
	TIntrTriangle3Triangle3 ()
	TIntrTriangle3Triangle3 (const TTriangle3< Real > &T0, const TTriangle3< Real > &T1)
void	SetResult (const TVector< Real > &A, const TVector< Real > &B)
void	SetResultNone ()
void	SetResult (bool IsIntersecting)
TTriangle3< Real >	GetTriangle0 () const
TTriangle3< Real >	GetTriangle1 () const
bool	GetReportCoplanarIntersection () const
Real	GetTolerance () const
void	SetTriangle0 (const TTriangle3< Real > &Triangle0In)
void	SetTriangle1 (const TTriangle3< Real > &Triangle1In)
void	SetReportCoplanarIntersection (bool bReportCoplanarIntersectionIn)
void	SetTolerance (Real ToleranceIn)
TIntrTriangle3Triangle3 *	Compute ()
bool	Find ()
bool	Test ()

Static Public Member Functions
static bool	Intersects (const TTriangle3< Real > &Triangle0, const TTriangle3< Real > &Triangle1, Real Tolerance=TMathUtil< Real >::ZeroTolerance)
static void	ProjectOntoAxis (const TTriangle3< Real > &triangle, const TVector< Real > &axis, Real &fmin, Real &fmax)
static void	TrianglePlaneRelations (const TTriangle3< Real > &triangle, const TPlane3< Real > &plane, TVector< Real > &distance, FIndex3i &sign, int &positive, int &negative, int &zero, Real Tolerance)
static int	IntersectTriangleWithCoplanarSegment (const TPlane3< Real > &plane, const TTriangle3< Real > &triangle, const TVector< Real > &end0, const TVector< Real > &end1, TVector< Real > &OutA, TVector< Real > &OutB, Real Tolerance)

Public Attributes
EIntersectionResult	Result = EIntersectionResult::NotComputed
EIntersectionType	Type = EIntersectionType::Empty
int	Quantity = 0
TVector< Real >	Points [6]

Protected Member Functions
bool	ContainsPoint (const TTriangle3< Real > &triangle, const TPlane3< Real > &plane, const TVector< Real > &point)
bool	IntersectsSegment (const TPlane3< Real > &plane, const TTriangle3< Real > &triangle, const TVector< Real > &end0, const TVector< Real > &end1)
bool	GetCoplanarIntersection (const TPlane3< Real > &plane, const TTriangle3< Real > &tri0, const TTriangle3< Real > &tri1)

Protected Attributes
TTriangle3< Real >	Triangle0
TTriangle3< Real >	Triangle1
Real	Tolerance = TMathUtil<Real>::ZeroTolerance
bool	bReportCoplanarIntersection = false

Detailed Description

template<typename Real>
class UE::Geometry::TIntrTriangle3Triangle3< Real >

Compute intersection between 3D triangles use Test() for fast boolean query, does not compute intersection info use Find() to compute full information By default fully-contained co-planar triangles are not reported as intersecting. Call SetReportCoplanarIntersection(true) to handle this case (more expensive)

Constructor & Destructor Documentation

TIntrTriangle3Triangle3() [1/2]

template<typename Real >

UE::Geometry::TIntrTriangle3Triangle3< Real >::TIntrTriangle3Triangle3 ( )

inline

TIntrTriangle3Triangle3() [2/2]

template<typename Real >

UE::Geometry::TIntrTriangle3Triangle3< Real >::TIntrTriangle3Triangle3 ( const TTriangle3< Real > &  T0, const TTriangle3< Real > &  T1  )

inline

Member Function Documentation

Compute()

template<typename Real >

TIntrTriangle3Triangle3 * UE::Geometry::TIntrTriangle3Triangle3< Real >::Compute ( )

inline

ContainsPoint()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::ContainsPoint ( const TTriangle3< Real > &  triangle, const TPlane3< Real > &  plane, const TVector< Real > &  point  )

inlineprotected

Find()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::Find ( )

inline

GetCoplanarIntersection()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::GetCoplanarIntersection ( const TPlane3< Real > &  plane, const TTriangle3< Real > &  tri0, const TTriangle3< Real > &  tri1  )

inlineprotected

GetReportCoplanarIntersection()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::GetReportCoplanarIntersection ( ) const

inline

GetTolerance()

template<typename Real >

Real UE::Geometry::TIntrTriangle3Triangle3< Real >::GetTolerance ( ) const

inline

GetTriangle0()

template<typename Real >

TTriangle3< Real > UE::Geometry::TIntrTriangle3Triangle3< Real >::GetTriangle0 ( ) const

inline

GetTriangle1()

template<typename Real >

TTriangle3< Real > UE::Geometry::TIntrTriangle3Triangle3< Real >::GetTriangle1 ( ) const

inline

Intersects()

template<typename Real >

static bool UE::Geometry::TIntrTriangle3Triangle3< Real >::Intersects ( const TTriangle3< Real > &  Triangle0, const TTriangle3< Real > &  Triangle1, Real  Tolerance = TMathUtil<Real>::ZeroTolerance  )

inlinestatic

IntersectsSegment()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::IntersectsSegment ( const TPlane3< Real > &  plane, const TTriangle3< Real > &  triangle, const TVector< Real > &  end0, const TVector< Real > &  end1  )

inlineprotected

IntersectTriangleWithCoplanarSegment()

template<typename Real >

static int UE::Geometry::TIntrTriangle3Triangle3< Real >::IntersectTriangleWithCoplanarSegment ( const TPlane3< Real > &  plane, const TTriangle3< Real > &  triangle, const TVector< Real > &  end0, const TVector< Real > &  end1, TVector< Real > &  OutA, TVector< Real > &  OutB, Real  Tolerance  )

inlinestatic

Solve a common sub-problem for triangle-triangle intersection – find the sub-segment (or point) where a triangle intersects a coplanar segment

Parameters

plane	The plane the triangle is on
triangle	The triangle to intersect
end0	First point of line segment
end1	Second point of line segment
OutA	First point of intersection between line segment and triangle (if any)
OutB	Second point of intersection between line segment and triangle (if any)
Tolerance	Tolerance to use for segment-triangle intersection

Returns

Number of points representing the intersection result (0 for none, 1 for point, 2 for segment)

ProjectOntoAxis()

template<typename Real >

static void UE::Geometry::TIntrTriangle3Triangle3< Real >::ProjectOntoAxis ( const TTriangle3< Real > &  triangle, const TVector< Real > &  axis, Real &  fmin, Real &  fmax  )

inlinestatic

SetReportCoplanarIntersection()

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetReportCoplanarIntersection ( bool  bReportCoplanarIntersectionIn )

inline

SetResult() [1/2]

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetResult ( bool  IsIntersecting )

inline

Store an externally-computed binary yes/no result

SetResult() [2/2]

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetResult ( const TVector< Real > &  A, const TVector< Real > &  B  )

inline

Store an externally-computed segment intersection result

SetResultNone()

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetResultNone ( )

inline

Store an externally-computed no-intersection result

SetTolerance()

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetTolerance ( Real  ToleranceIn )

inline

SetTriangle0()

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetTriangle0 ( const TTriangle3< Real > &  Triangle0In )

inline

SetTriangle1()

template<typename Real >

void UE::Geometry::TIntrTriangle3Triangle3< Real >::SetTriangle1 ( const TTriangle3< Real > &  Triangle1In )

inline

Test()

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::Test ( )

inline

TrianglePlaneRelations()

template<typename Real >

static void UE::Geometry::TIntrTriangle3Triangle3< Real >::TrianglePlaneRelations ( const TTriangle3< Real > &  triangle, const TPlane3< Real > &  plane, TVector< Real > &  distance, FIndex3i &  sign, int &  positive, int &  negative, int &  zero, Real  Tolerance  )

inlinestatic

Member Data Documentation

bReportCoplanarIntersection

template<typename Real >

bool UE::Geometry::TIntrTriangle3Triangle3< Real >::bReportCoplanarIntersection = false

protected

Points

template<typename Real >

TVector<Real> UE::Geometry::TIntrTriangle3Triangle3< Real >::Points[6]

Quantity

template<typename Real >

int UE::Geometry::TIntrTriangle3Triangle3< Real >::Quantity = 0

Result

template<typename Real >

EIntersectionResult UE::Geometry::TIntrTriangle3Triangle3< Real >::Result = EIntersectionResult::NotComputed

Tolerance

template<typename Real >

Real UE::Geometry::TIntrTriangle3Triangle3< Real >::Tolerance = TMathUtil<Real>::ZeroTolerance

protected

Triangle0

template<typename Real >

TTriangle3<Real> UE::Geometry::TIntrTriangle3Triangle3< Real >::Triangle0

protected

Triangle1

template<typename Real >

TTriangle3<Real> UE::Geometry::TIntrTriangle3Triangle3< Real >::Triangle1

protected

Type

template<typename Real >

EIntersectionType UE::Geometry::TIntrTriangle3Triangle3< Real >::Type = EIntersectionType::Empty

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The documentation for this class was generated from the following file:

• Engine/Source/Runtime/GeometryCore/Public/Intersection/IntrTriangle3Triangle3.h