TerrainBase::Segment Struct Reference

A pair of locations, representing boundaries etc. More...

#include <TerrainBase.H>

List of all members.

Public Member Functions
	Segment (sint4 x1=0, sint4 y1=0, sint4 x2=0, sint4 y2=0)
	Segment (const Loc &l1_, const Loc &l2_)
sint4	is_left_turn (const Loc &l3) const
	positive if l3 is on the left of the line from l1 to l2; negative if l3 is on the right; 0 if l3 is on the line containing the segment.
bool	touches (const Segment &o) const
	true if the segments weakly intersect
bool	intersects (const Segment &o) const
	true if the segments strictly intersect
Public Attributes
Loc	l1
Loc	l2

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Detailed Description

A pair of locations, representing boundaries etc.

Definition at line 64 of file TerrainBase.H.

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Constructor & Destructor Documentation

TerrainBase::Segment::Segment	(	sint4	x1 = 0,
		sint4	y1 = 0,
		sint4	x2 = 0,
		sint4	y2 = 0
	)		[inline]

Definition at line 68 of file TerrainBase.H.

TerrainBase::Segment::Segment	(	const Loc &	l1_,
		const Loc &	l2_
	)		[inline]

Definition at line 69 of file TerrainBase.H.

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Member Function Documentation

bool TerrainBase::Segment::intersects

(

const Segment &

o

)

const [inline]

true if the segments strictly intersect

Definition at line 84 of file TerrainBase.H.

References is_left_turn(), l1, and l2.

sint4 TerrainBase::Segment::is_left_turn

(

const Loc &

l3

)

const [inline]

positive if l3 is on the left of the line from l1 to l2; negative if l3 is on the right; 0 if l3 is on the line containing the segment.

Adapted for the reversed y-axis used by ORTS.

Definition at line 75 of file TerrainBase.H.

References l1, l2, TerrainBase::Loc::x, and TerrainBase::Loc::y.

Referenced by intersects(), and touches().

bool TerrainBase::Segment::touches

(

const Segment &

o

)

const [inline]

true if the segments weakly intersect

Definition at line 78 of file TerrainBase.H.

References is_left_turn(), l1, and l2.

Referenced by TRTerrain::UnitPath::is_intersect(), SimpleTerrain::UnitPath::is_intersect(), and SimplePathfinder::is_intersect().

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Member Data Documentation

Loc TerrainBase::Segment::l1

Definition at line 66 of file TerrainBase.H.

Referenced by VecField::PolygonEmitter::closest_point_on_seg(), SimpleTerrain::ST_ForceField::get_forcefield_target(), FFLocPath::get_forcefield_target(), SimpleTerrain::ST_ForceField::get_line_repulsion(), FFLocPath::get_line_repulsion(), SimpleTerrain::ST_ForceField::get_push_target(), FFLocPath::get_push_target(), SimpleTerrain::ST_Terrain::PFEngine::Map::insert_boundary(), SimpleTerrain::SimpleGlobalPF::Map::insert_boundary(), PR_Terrain::PRAEngine::insert_boundary(), intersects(), is_left_turn(), operator<<(), and touches().

Loc TerrainBase::Segment::l2

Definition at line 66 of file TerrainBase.H.

Referenced by VecField::PolygonEmitter::closest_point_on_seg(), SimpleTerrain::ST_ForceField::get_forcefield_target(), FFLocPath::get_forcefield_target(), SimpleTerrain::ST_ForceField::get_line_repulsion(), FFLocPath::get_line_repulsion(), SimpleTerrain::ST_ForceField::get_push_target(), FFLocPath::get_push_target(), SimpleTerrain::ST_Terrain::PFEngine::Map::insert_boundary(), SimpleTerrain::SimpleGlobalPF::Map::insert_boundary(), PR_Terrain::PRAEngine::insert_boundary(), intersects(), is_left_turn(), operator<<(), and touches().

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

• TerrainBase.H