triangleFuncs Class Reference

Various triangle functions. More...

Public Types
enum	proxType { NONE, POINT, EDGE }
	Enumeration defining nearness classification. More...

Static Public Member Functions
static bool	intersectAxesBundle (const point &V0, const point &V10, const point &V20, const label i0, const pointField &origin, const scalar maxLength, point &pInter)
	Intersect triangle with parallel edges aligned with axis i0. More...
static bool	intersectBb (const point &p0, const point &p1, const point &p2, const treeBoundBox &cubeBb)
	Does triangle intersect bounding box. More...
static bool	intersect (const point &va0, const point &va10, const point &va20, const point &basePoint, const vector &normal, point &pInter0, point &pInter1)
	Does triangle intersect plane. Return bool and set intersection segment. More...
static bool	intersect (const point &va0, const point &va10, const point &va20, const point &vb0, const point &vb10, const point &vb20, point &pInter0, point &pInter1)
	Do triangles intersect. Return bool and set intersection segment. More...

Static Private Member Functions
static void	setIntersection (const point &oppositeSidePt, const scalar oppositeSign, const point &thisSidePt, const scalar thisSign, const scalar tol, point &pt)
	Helper function for intersect. Sets pt to be anywhere on the edge. More...
static void	selectPt (const bool select0, const point &p0, const point &p1, point &min)
	Helper function. More...

Detailed Description

Various triangle functions.

Source files

• triangleFuncs.H
• triangleFuncs.C

Definition at line 54 of file triangleFuncs.H.

Member Enumeration Documentation

proxType

enum proxType

Enumeration defining nearness classification.

Enumerator
NONE
POINT
EDGE

Definition at line 62 of file triangleFuncs.H.

Member Function Documentation

setIntersection()

void setIntersection ( const point &  oppositeSidePt, const scalar  oppositeSign, const point &  thisSidePt, const scalar  thisSign, const scalar  tol, point &  pt  )

staticprivate

Helper function for intersect. Sets pt to be anywhere on the edge.

between oppositeSidePt and thisSidePt depending on both signs.

Definition at line 35 of file triangleFuncs.C.

References Foam::mag().

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selectPt()

void selectPt ( const bool  select0, const point &  p0, const point &  p1, point &  min  )

staticprivate

Helper function.

Definition at line 62 of file triangleFuncs.C.

References Foam::min().

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intersectAxesBundle()

bool intersectAxesBundle ( const point &  V0, const point &  V10, const point &  V20, const label  i0, const pointField &  origin, const scalar  maxLength, point &  pInter  )

static

Intersect triangle with parallel edges aligned with axis i0.

Returns true (and intersection in pInter) if any of them intersects triangle. Used in intersectBb.

Definition at line 85 of file triangleFuncs.C.

References Foam::constant::atomic::alpha, beta(), Foam::det(), forAll, Foam::mag(), s(), and u0.

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intersectBb()

bool intersectBb ( const point &  p0, const point &  p1, const point &  p2, const treeBoundBox &  cubeBb  )

static

Does triangle intersect bounding box.

Definition at line 172 of file triangleFuncs.C.

References treeBoundBox::intersects(), boundBox::max(), Foam::max(), boundBox::min(), and Foam::min().

Referenced by treeDataTriSurface::overlaps(), treeDataFace::overlaps(), and distributedTriSurfaceMesh::overlaps().

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intersect() [1/2]

bool intersect ( const point &  va0, const point &  va10, const point &  va20, const point &  basePoint, const vector &  normal, point &  pInter0, point &  pInter1  )

static

Does triangle intersect plane. Return bool and set intersection segment.

Definition at line 526 of file triangleFuncs.C.

References Foam::mag(), and Foam::sqrt().

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intersect() [2/2]

bool intersect ( const point &  va0, const point &  va10, const point &  va20, const point &  vb0, const point &  vb10, const point &  vb20, point &  pInter0, point &  pInter1  )

static

Do triangles intersect. Return bool and set intersection segment.

Definition at line 644 of file triangleFuncs.C.

References SortableList::indices(), intersect(), Foam::mag(), and SortableList::sort().

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

• src/meshTools/triSurface/triangleFuncs/triangleFuncs.H
• src/meshTools/triSurface/triangleFuncs/triangleFuncs.C