Ngon Class Reference

#include <lib_ngon.h>

Public Member Functions
	Ngon ()
	~Ngon ()
	Ngon (const CPolygon &ply)
	Ngon (const Ngon &src)
Ngon &	operator= (const Ngon &src)
Bool	Alloc (Int32 cnt, Int32 scnt)
void	Free ()
Bool	CopyFrom (const Ngon *src)
Bool	CopyFrom (Int32 cnt, Int32 scnt, Int32 *pts, Int32 *segs)
void	Release ()
Float	CalcArea (Int32 seg, const Vector *p, Matrix &m)

Public Attributes
Int32 *	points
Int32 *	segments
Int32	count
Int32	segcount

Constructor & Destructor Documentation

Ngon() [1/3]

Ngon

(

)

Constructor.

~Ngon()

~Ngon

(

)

Destructor.

Ngon() [2/3]

Ngon ( const CPolygon &  ply )

explicit

Constructor from polygon in ply.

Parameters

[in]

ply

A polygon.

Ngon() [3/3]

Ngon

(

const Ngon &

src

)

Copy constructor from another N-gon in src.

Parameters

[in]

src

Another N-gon.

Member Function Documentation

operator=()

Ngon& operator=

(

const Ngon &

src

)

Assignment operator.

Parameters

[in]

src

Another N-gon.

Returns

The assigned N-gon.

Alloc()

Bool Alloc	(	Int32	cnt,
		Int32	scnt
	)

Allocates data for cnt points and scnt segments.

Parameters

[in]	cnt	The point count.
[in]	scnt	The segment count.

Returns

true if successful, otherwise false.

Free()

void Free

(

)

Frees the internal data.

CopyFrom() [1/2]

Bool CopyFrom

(

const Ngon *

src

)

Copies data from src.

Parameters

[in]

src

The source N-gon.

Returns

true if successful, otherwise false.

CopyFrom() [2/2]

Bool CopyFrom	(	Int32	cnt,
		Int32	scnt,
		Int32 *	pts,
		Int32 *	segs
	)

Copies data from the passed arrays.

Parameters

[in]	cnt	The point count.
[in]	scnt	The segment count.
[in]	pts	The points array. The caller owns the pointed array.
[in]	segs	The segments array. The caller owns the pointed array.

Returns

true if successful, otherwise false.

Release()

void Release

(

)

Releases the internal arrays, i.e. so that they are not freed by the destructor.

CalcArea()

Float CalcArea	(	Int32	seg,
		const Vector *	p,
		Matrix &	m
	)

Calculates the N-gon area.

Parameters

[in]	seg	The segment.
[in]	p	The points array.
[in]	m	The projection matrix.

Returns

The calculated area.

Member Data Documentation

points

Int32* points

Point array.

segments

Int32* segments

Segments array.

count

Int32 count

Point count.

segcount

Int32 segcount

Segment count.