Offsets a polyline (in or out). The polyline forms a closed loop. More...

Inheritance diagram for xms::MePolyOffsetterImpl:

Public Member Functions
	MePolyOffsetterImpl ()
	constructor

virtual bool	Offset (const std::vector< Pt3d > &a_input, MePolyOffsetter::polytype a_pType, MePolyOffsetterOutput &a_output, double a_xyTol) override
	Takes an input polyline and offsets it based on the distance of the segments that make up the polyline. More...

bool	Offset (const std::vector< Pt3d > &a_input, MePolyOffsetter::polytype a_pType, std::vector< std::vector< Pt3d >> &a_output, std::vector< MePolyOffsetter::polytype > &a_outPolyType)
	Takes an input polyline and offsets it based on the distance of the segments that make up the polyline. More...

bool	DoOffset (const std::vector< Pt3d > &a_input)
	buffers the polygon More...

void	CheckToAddPoint (std::vector< Pt3d > &a_result, const Pt3d &a_pt)
	checks to see if a point can be added to the resulting line More...

void	ProcessAngleSegmentEnd (int npt_end, double ang_end, int in1, int in2, int in3, double dx1, double dy1, const Pt3d *pts, std::vector< Pt3d > &a_result)
	handles inserting points around the end of a segment. More...

void	SpecialRejection (const std::vector< Pt3d > &a_input, std::vector< Pt3d > &a_output)
	a special case for removing points. More...

void	SelfIntersection (std::vector< Pt3d > &a_pLine)
	Self intersection of a polyline. More...

void	FindDuplicatesAndOrderLoops (const std::vector< Pt3d > &a_input)
	Finds duplicate points and orders the loops. More...

Public Attributes
double	m_xyTol
	tolerance for geometric comparisons

bool	m_setOffsetToZero
	flag used in testing

BSHP< MePolyCleaner >	m_intersector
	class to clean the offset from the polygon

MePolyOffsetter::polytype	m_pType
	the type of polygon being offset

MePolyOffsetterOutput	m_output
	the new polygons created by this class

Additional Inherited Members
Public Types inherited from xms::MePolyOffsetter
enum	polytype { OUTSIDE_POLY = 0, INSIDE_POLY, NEWOUT_POLY }
	enum to identify types of polygons created by this class

Static Public Member Functions inherited from xms::MePolyOffsetter
static BSHP< MePolyOffsetter >	New ()
	Creates a BufferPoly class. More...

Detailed Description

Offsets a polyline (in or out). The polyline forms a closed loop.

Definition at line 40 of file MePolyOffsetter.cpp.

Member Function Documentation

◆ CheckToAddPoint()

void xms::MePolyOffsetterImpl::CheckToAddPoint	(	std::vector< Pt3d > &	a_result,
		const Pt3d &	a_pt
	)

checks to see if a point can be added to the resulting line

Parameters

a_result	???
a_pt	The point.

Definition at line 262 of file MePolyOffsetter.cpp.

Referenced by DoOffset(), and ProcessAngleSegmentEnd().

◆ DoOffset()

bool xms::MePolyOffsetterImpl::DoOffset ( const std::vector< Pt3d > & a_input )

buffers the polygon

Parameters

[in] a_input ???

Returns: true on success.

Definition at line 185 of file MePolyOffsetter.cpp.

References CheckToAddPoint(), EQ_TOL(), FindDuplicatesAndOrderLoops(), FOURPIOVER3, gmAngleBetween2DVectors(), gmEqualPointsXY(), m_xyTol, PIOVER6, ProcessAngleSegmentEnd(), SelfIntersection(), SEVENPIOVER3, SIN60, SpecialRejection(), TWOPI, xms::Pt3< T >::x, xms::Pt3< T >::y, and xms::Pt3< T >::z.

Referenced by Offset().

◆ FindDuplicatesAndOrderLoops()

void xms::MePolyOffsetterImpl::FindDuplicatesAndOrderLoops ( const std::vector< Pt3d > & a_input )

Finds duplicate points and orders the loops.

Parameters

[in] a_input Vector of point locations

Definition at line 413 of file MePolyOffsetter.cpp.

References xms::MePolyOffsetterOutput::m_loops, m_output, and xms::MePolyOffsetterOutput::m_pts.

Referenced by DoOffset().

◆ Offset() [1/2]

bool xms::MePolyOffsetterImpl::Offset	(	const std::vector< Pt3d > &	a_input,
		MePolyOffsetter::polytype	a_pType,
		MePolyOffsetterOutput &	a_out,
		double	a_xyTol
	)

overridevirtual

Takes an input polyline and offsets it based on the distance of the segments that make up the polyline.

Parameters

a_input	The input polyline.
a_pType	The type of polygon: outside polygon or inside polygon
a_out	The offset of the input polyline. This can be multiple polylines
a_xyTol	Tolerance for x,y plane for coincident points.

Returns: Returns false if the input polygon in invalid or the offset fails

Definition at line 125 of file MePolyOffsetter.cpp.

References DoOffset(), m_output, m_pType, and m_xyTol.

Referenced by MePolyOffsetterUnitTests::testBox0(), MePolyOffsetterUnitTests::testBox1(), MePolyOffsetterUnitTests::testBox1a(), MePolyOffsetterUnitTests::testCase1(), MePolyOffsetterUnitTests::testCase1a(), and MePolyOffsetterUnitTests::testCase1b().

◆ Offset() [2/2]

bool xms::MePolyOffsetterImpl::Offset	(	const std::vector< Pt3d > &	a_input,
		MePolyOffsetter::polytype	a_pType,
		std::vector< std::vector< Pt3d >> &	a_output,
		std::vector< MePolyOffsetter::polytype > &	a_outPolyType
	)

Takes an input polyline and offsets it based on the distance of the segments that make up the polyline.

Parameters

a_input	The input polyline.
a_pType	The type of polygon: outside polygon or inside polygon
a_output	The offset of the input polyline. This can be multiple polylines
a_outPolyType	The type of polygon in a_output it is either: OUTSIDE_POLY or INSIDE_POLY

Returns: Returns false if the input polygon in invalid or the offset fails

Definition at line 149 of file MePolyOffsetter.cpp.

References DoOffset(), xms::MePolyOffsetterOutput::m_loops, xms::MePolyOffsetterOutput::m_loopTypes, m_output, xms::MePolyOffsetterOutput::m_pts, and m_pType.

◆ ProcessAngleSegmentEnd()

void xms::MePolyOffsetterImpl::ProcessAngleSegmentEnd	(	int	npt_end,
		double	ang_end,
		int	in1,
		int	in2,
		int	in3,
		double	dx1,
		double	dy1,
		const Pt3d *	pts,
		std::vector< Pt3d > &	a_result
	)

handles inserting points around the end of a segment.

Parameters

[in]	npt_end	???
[in]	ang_end	???
[in]	in1	???
[in]	in2	???
[in]	in3	???
[in]	dx1	???
[in]	dy1	???
[in]	pts	???
[in]	a_result	???

Definition at line 278 of file MePolyOffsetter.cpp.

References CheckToAddPoint(), Mdist(), PIOVER3, PIOVER6, SIN60, TWOPIOVER3, xms::Pt3< T >::x, xms::Pt3< T >::y, and xms::Pt3< T >::z.

Referenced by DoOffset().

◆ SelfIntersection()

void xms::MePolyOffsetterImpl::SelfIntersection ( std::vector< Pt3d > & a_pLine )

Self intersection of a polyline.

Parameters

a_pLine The polyline.

Definition at line 405 of file MePolyOffsetter.cpp.

References m_intersector, m_output, m_pType, and m_xyTol.

Referenced by DoOffset().

◆ SpecialRejection()

void xms::MePolyOffsetterImpl::SpecialRejection	(	const std::vector< Pt3d > &	a_input,
		std::vector< Pt3d > &	a_out
	)

a special case for removing points.

Parameters

[in]	a_input	???
	a_out	???

Definition at line 377 of file MePolyOffsetter.cpp.

References gmPointInTriangleWithTol(), and m_xyTol.

Referenced by DoOffset().

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

/home/conan/xmsmesh/meshing/detail/MePolyOffsetter.cpp

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ CheckToAddPoint()

◆ DoOffset()

◆ FindDuplicatesAndOrderLoops()

◆ Offset() [1/2]

◆ Offset() [2/2]

◆ ProcessAngleSegmentEnd()

◆ SelfIntersection()

◆ SpecialRejection()