2-D triangle and queries More...

Inheritance diagram for triangle2D:

Collaboration diagram for triangle2D:

Public Member Functions
	triangle2D (const vector2D &a, const vector2D &b, const vector2D &c, const bool orient=false)
	Construct from 3 2-D points. More...

	triangle2D (const vector &a3d, const vector &b3d, const vector &c3d, const vector &axis1, const vector &axis2, const bool orient=false)
	Construct from 3 3-D points and axes. More...

label	order () const
	Returns: 1 if points are ordered in anti-clockwise direction -1 if points are ordered in clockwise direction 0 if the triangle has collapsed to a line. More...

label	snapClosePoints (const triangle2D &triB)
	Snap [this] triangle's points to those of triB if they are within absTol. More...

void	interArea (const triangle2D &triB, vector2D &centre, scalar &area) const
	Return the intersection centre and area. More...

scalar	interArea (const triangle2D &triB) const
	Return the intersection area. More...

bool	overlaps (const triangle2D &triB) const
	Return true if triB overlaps. More...

scalar	area () const noexcept
	Return the triangle area. More...

vector2D	centre () const
	Return the triangle centre. More...

bool	contains (const triangle2D &tri) const
	Return true if tri is within this triangle. More...

bool	isSame (const triangle2D &triB) const
	Return true if triB is the same as this triangle. More...

bool	pointInside (const vector2D &p) const
	Return true if t point p is inside this triangle. More...

Public Member Functions inherited from FixedList< vector2D, 3 >
void	writeEntry (const word &keyword, Ostream &os) const
	Write the list as a dictionary entry with keyword. More...

	FixedList ()=default
	Default construct. More...

	FixedList (const vector2D &val)
	Construct and initialize all entries to given value. More...

	FixedList (const Foam::zero)
	Construct and initialize all entries to zero. More...

	FixedList (const FixedList< vector2D, N > &list)
	Copy construct. More...

	FixedList (FixedList< vector2D, N > &&list)
	Move construct by using move assignment for the individual list elements. More...

	FixedList (std::initializer_list< vector2D > list)
	Construct from an initializer list. Runtime size check. More...

	FixedList (const UList< vector2D > &list)
	Construct from UList. Runtime size check. More...

	FixedList (const FixedList< vector2D, AnyNum > &list, const FixedList< label, N > &indices)
	Copy construct from a subset of the input. No size check. More...

	FixedList (const UList< vector2D > &list, const FixedList< label, N > &indices)
	Copy construct from a subset of the input. No size check. More...

	FixedList (Istream &is)
	Construct from Istream. More...

	FixedList (const vector2D list[N])
	Deprecated: copy construct from C-array. More...

autoPtr< FixedList< vector2D, N > >	clone () const
	Clone. More...

const vector2D *	cdata () const noexcept
	Return pointer to the underlying array serving as data storage. More...

vector2D *	data () noexcept
	Return pointer to the underlying array serving as data storage. More...

const char *	cdata_bytes () const noexcept
	Return pointer to the underlying array serving as data storage,. More...

char *	data_bytes () noexcept
	Return pointer to the underlying array serving as data storage,. More...

vector2D &	get () noexcept
	Element access using compile-time indexing. More...

const vector2D &	get () const noexcept
	Element access using compile-time indexing. More...

vector2D &	front () noexcept
	Access first element of the list, position [0]. More...

const vector2D &	front () const noexcept
	Access first element of the list, position [0]. More...

vector2D &	back () noexcept
	Access last element of the list, position [N-1]. More...

const vector2D &	back () const noexcept
	Access last element of the list, position [N-1]. More...

label	fcIndex (const label i) const noexcept
	Return the forward circular index, i.e. next index which returns to the first at the end of the list. More...

const vector2D &	fcValue (const label i) const
	Return forward circular value (ie, next value in the list) More...

vector2D &	fcValue (const label i)
	Return forward circular value (ie, next value in the list) More...

label	rcIndex (const label i) const noexcept
	Return the reverse circular index, i.e. previous index which returns to the last at the beginning of the list. More...

const vector2D &	rcValue (const label i) const
	Return reverse circular value (ie, previous value in the list) More...

vector2D &	rcValue (const label i)
	Return reverse circular value (ie, previous value in the list) More...

void	checkStart (const label start) const
	Check start is within valid range [0,size) More...

void	checkSize (const label size) const
	Check size is identical to template parameter N. More...

void	checkIndex (const label i) const
	Check index is within valid range [0,N) More...

bool	uniform () const
	True if all entries have identical values, and list is non-empty. More...

bool	contains (const vector2D &val) const
	True if the value is contained in the list. More...

bool	contains (const vector2D &val, label pos, label len=-1) const
	Is the value contained in the list? More...

label	find (const vector2D &val) const
	Find index of the first occurrence of the value. More...

label	find (const vector2D &val, label pos, label len=-1) const
	Find index of the first occurrence of the value. More...

label	rfind (const vector2D &val, label pos=-1) const
	Find index of the last occurrence of the value. More...

void	resize (const label n)
	Dummy function, to make FixedList consistent with List Any resizing is ignored (Fatal with bad sizing in full debug). More...

void	resize_fill (const label n, const vector2D &val)
	Set val for all elements. Any resizing is ignored (Fatal with bad sizing in full debug). More...

void	resize_nocopy (const label n)
	Dummy function, to make FixedList consistent with List Any resizing is ignored (Fatal with bad sizing in full debug). More...

void	setSize (const label n)
	Dummy function, to make FixedList consistent with List. More...

void	fill (const vector2D &val)
	Assign all entries to the given value. More...

void	fill (const Foam::zero)
	Assign all entries to zero. More...

void	moveFirst (const label i)
	Move element to the first position. More...

void	moveLast (const label i)
	Move element to the last position. More...

void	swapFirst (const label i)
	Swap element with the first element. More...

void	swapLast (const label i)
	Swap element with the last element. More...

void	transfer (FixedList< vector2D, N > &list)
	Transfer by swapping using a move assignment for the content of the individual list elements. More...

vector2D &	operator[] (const label i)
	Return element of FixedList. More...

const vector2D &	operator[] (const label i) const
	Return element of constant FixedList. More...

void	operator= (const UList< vector2D > &list)
	Assignment to UList operator. Takes linear time. More...

void	operator= (std::initializer_list< vector2D > list)
	Assignment to an initializer list. Takes linear time. More...

void	operator= (const vector2D &val)
	Assign all entries to the given value. fill() More...

void	operator= (const Foam::zero)
	Assign all entries to zero. fill() More...

void	operator= (const FixedList< vector2D, N > &list)
	Copy assignment. More...

void	operator= (FixedList< vector2D, N > &&list)
	Move assignment. More...

void	operator= (const vector2D list[N])
	Deprecated: assignment from C-array. More...

iterator	begin () noexcept
	Return an iterator to begin traversing the FixedList. More...

const_iterator	begin () const noexcept
	Return const_iterator to begin traversing the constant FixedList. More...

iterator	end () noexcept
	Return an iterator to end traversing the FixedList. More...

const_iterator	end () const noexcept
	Return const_iterator to end traversing the constant FixedList. More...

const_iterator	cbegin () const noexcept
	Return const_iterator to begin traversing the constant FixedList. More...

const_iterator	cend () const noexcept
	Return const_iterator to end traversing the constant FixedList. More...

reverse_iterator	rbegin ()
	Return reverse_iterator to begin reverse traversing the FixedList. More...

const_reverse_iterator	rbegin () const
	Return const_reverse_iterator to begin reverse traversing FixedList. More...

reverse_iterator	rend ()
	Return reverse_iterator to end reverse traversing the FixedList. More...

const_reverse_iterator	rend () const
	Return const_reverse_iterator to end reverse traversing FixedList. More...

const_reverse_iterator	crbegin () const
	Return const_reverse_iterator to begin reverse traversing FixedList. More...

const_reverse_iterator	crend () const
	Return const_reverse_iterator to end reverse traversing FixedList. More...

void	swap (FixedList< vector2D, N > &other)
	Swap lists by swapping the content of the individual list elements. More...

bool	operator== (const FixedList< vector2D, N > &list) const
	Equality operation on FixedLists of the same type. More...

bool	operator!= (const FixedList< vector2D, N > &list) const
	The opposite of the equality operation. Takes linear time. More...

bool	operator< (const FixedList< vector2D, N > &list) const
	Compare two FixedLists lexicographically. Takes linear time. More...

bool	operator> (const FixedList< vector2D, N > &list) const
	Compare two FixedLists lexicographically. Takes linear time. More...

bool	operator<= (const FixedList< vector2D, N > &list) const
	Return true if !(a > b). Takes linear time. More...

bool	operator>= (const FixedList< vector2D, N > &list) const
	Return true if !(a < b). Takes linear time. More...

Istream &	readList (Istream &is)
	Read from Istream, discarding contents of existing List. More...

Ostream &	writeList (Ostream &os, const label shortLen=0) const
	Write List, with line-breaks in ASCII when length exceeds shortLen. More...

vector2D &	first () noexcept
	Access first element of the list, position [0] - front() More...

const vector2D &	first () const noexcept
	Access first element of the list, position [0] - front() More...

vector2D &	last () noexcept
	Access last element of the list, position [N-1] - back() More...

const vector2D &	last () const noexcept
	Access last element of the list, position [N-1] - back() More...

bool	found (const vector2D &val, label pos=0) const
	Same as contains() More...

Static Public Member Functions
static void	writeOBJ (Ostream &os, const triangle2D &tri, label offset)
	Write the triangle in OBJ format. More...

static label	nClosePoints (const triangle2D &triA, const triangle2D &triB)
	Return the number of similar points between two triangles. More...

static scalar	area (const vector2D &a, const vector2D &b, const vector2D &c)
	Return the signed area. More...

static bool	lineSegmentIntersectionPoint (const vector2D &lp1, const vector2D &lp2, const vector2D &sp1, const vector2D &sp2, vector2D &intersection)
	Set the intersection between a line and segment Return true if lines intersect. More...

static bool	lineIntersectionPoint (const vector2D &a, const vector2D &b, const vector2D &c, const vector2D &d, vector2D &intersection)
	Set the intersection between two lines Return true if lines intersect. More...

static bool	lineIntersects (const vector2D &a, const vector2D &b, const vector2D &c, const vector2D &d)
	Return true if lines ab and cd intersect. More...

Static Public Member Functions inherited from FixedList< vector2D, 3 >
static const FixedList< vector2D, N > &	null ()
	Return a null FixedList. More...

static std::streamsize	size_bytes () noexcept
	Number of contiguous bytes for the list data,. More...

static std::streamsize	byteSize ()
	Number of contiguous bytes for the list data, runtime FatalError if type is not contiguous. More...

static constexpr bool	empty () noexcept
	Always false since zero-sized FixedList is compile-time disabled. More...

static constexpr label	size () noexcept
	Return the number of elements in the FixedList. More...

static constexpr unsigned	max_size () noexcept
	The dimensioned size (template parameter N) of the FixedList. More...

Static Public Attributes
static int	debug = 0

static scalar	relTol = 1e-8
	Relative tolerance. More...

static scalar	absTol = 1e-10
	Absolute tolerance. More...

Additional Inherited Members
Public Types inherited from FixedList< vector2D, 3 >
typedef vector2D	value_type
	The value type the FixedList contains. More...

typedef vector2D *	pointer
	The pointer type for non-const access to value_type items. More...

typedef const vector2D *	const_pointer
	The pointer type for const access to value_type items. More...

typedef vector2D &	reference
	The type used for storing into value_type objects. More...

typedef const vector2D &	const_reference
	The type used for reading from constant value_type objects. More...

typedef vector2D *	iterator
	Random access iterator for traversing FixedList. More...

typedef const vector2D *	const_iterator
	Random access iterator for traversing FixedList. More...

typedef label	size_type
	The type to represent the size of a FixedList. More...

typedef label	difference_type
	The difference between iterator objects. More...

typedef std::reverse_iterator< iterator >	reverse_iterator
	Reverse iterator (non-const access) More...

typedef std::reverse_iterator< const_iterator >	const_reverse_iterator
	Reverse iterator (const access) More...

Protected Member Functions inherited from FixedList< vector2D, 3 >
void	writeEntry (Ostream &os) const
	Write the FixedList with its compound type. More...

Detailed Description

2-D triangle and queries

Source files

Definition at line 48 of file triangle2D.H.

Constructor & Destructor Documentation

◆ triangle2D() [1/2]

triangle2D	(	const vector2D &	a,
		const vector2D &	b,
		const vector2D &	c,
		const bool	orient = `false`
	)

Construct from 3 2-D points.

Definition at line 41 of file triangle2D.C.

References Foam::constant::physicoChemical::b, and Foam::constant::universal::c.

◆ triangle2D() [2/2]

triangle2D	(	const vector &	a3d,
		const vector &	b3d,
		const vector &	c3d,
		const vector &	axis1,
		const vector &	axis2,
		const bool	orient = `false`
	)

Construct from 3 3-D points and axes.

Definition at line 65 of file triangle2D.C.

Member Function Documentation

◆ order()

Foam::label order ( ) const

inline

Returns: 1 if points are ordered in anti-clockwise direction -1 if points are ordered in clockwise direction 0 if the triangle has collapsed to a line.

Definition at line 192 of file triangle2DI.H.

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

Referenced by triangle2D::interArea().

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