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静态公共成员函数 | 私有成员函数 | 所有成员列表

ExactPredicates2DInterface Class Reference

#include <exactpredicates2d.h>

详细描述

2D exact geometrical predicates. Based on Shewchuk's adaptive exact predicates.

静态公共成员函数

static MAXON_METHOD Float   Orient (const Vector2d &pointA, const Vector2d &pointB, const Vector2d &pointC)
static MAXON_METHOD Float   InCircle (const Vector2d &pointA, const Vector2d &pointB, const Vector2d &pointC, const Vector2d &testPoint)
static MAXON_METHOD Result < Float >  InTriangle (const Vector2d &pointA, const Vector2d &pointB, const Vector2d &pointC, const Vector2d &testPoint)
static MAXON_METHOD Result < Float >  InSector (const Vector2d ¢er, const Vector2d &rayA, const Vector2d &rayB, const Vector2d &testPoint)
static MAXON_METHOD Result < Bool >  OutlineSelfIntersectionTest (const Block < const Vector2d > &outline)
static MAXON_METHOD Result < Bool >  OutlinesIntersectionTest (const Block < const Vector2d > &outline1, const Block < const Vector2d > &outline2)
static MAXON_METHOD Result < Bool >  OutlinesIntersectionTest (const Block < const Block < const Vector2d >> &outlines)

私有成员函数

  MAXON_INTERFACE_NONVIRTUAL ( ExactPredicates2DInterface , MAXON_REFERENCE_NONE , "net.maxon.interface.exactpredicates2d")

成员函数文档编制

◆  MAXON_INTERFACE_NONVIRTUAL()

MAXON_INTERFACE_NONVIRTUAL ( ExactPredicates2DInterface   ,
MAXON_REFERENCE_NONE   ,
"net.maxon.interface.exactpredicates2d"   
)
private

◆  Orient()

static MAXON_METHOD Float Orient ( const Vector2d &  pointA ,
const Vector2d &  pointB ,
const Vector2d &  pointC  
)
static

Gets orientation of three points.

参数
[in] pointA First point.
[in] pointB Second point.
[in] pointC Third point.
返回
Positive (negative) value if orientation is counter-clockwise (clockwise), zero otherwise.

◆  InCircle()

static MAXON_METHOD Float InCircle ( const Vector2d &  pointA ,
const Vector2d &  pointB ,
const Vector2d &  pointC ,
const Vector2d &  testPoint  
)
static

Tests if a point is inside the circumscribed circle of a triangle defined by three points.

参数
[in] pointA First point.
[in] pointB Second point.
[in] pointC Third point.
[in] testPoint Test point.
返回
Positive (negative) value if the point is inside (outside) the circle, zero if it is on the circle.

◆  InTriangle()

static MAXON_METHOD Result < Float > InTriangle ( const Vector2d &  pointA ,
const Vector2d &  pointB ,
const Vector2d &  pointC ,
const Vector2d &  testPoint  
)
static

Tests if a point is inside a triangle defined by three points.

参数
[in] pointA First point.
[in] pointB Second point.
[in] pointC Third point.
[in] testPoint Test point.
Precondition
Three triangle points shall differ.
返回
Positive (negative) value if the point is inside (outside) the triangle, zero if it is on the triangle boundary.

◆  InSector()

static MAXON_METHOD Result < Float > InSector ( const Vector2d &  center ,
const Vector2d &  rayA ,
const Vector2d &  rayB ,
const Vector2d &  testPoint  
)
static

Checks if the test point lies inside a space sector.

Check if the test point lies inside the space sector defined by a center point and two rays (ccw order).

参数
[in] center Sector center.
[in] rayA Sector first ray.
[in] rayB Sector second ray (ccw w.r.t the above parameters).
[in] testPoint Test Point.
Precondition
Center and ray points shall differ.
Sector angle shall be less than 180 degree (not reflex).
返回
Positive/zero/negative if the test point @testPoint is in/on/outside the sector respectively.

◆  OutlineSelfIntersectionTest()

static MAXON_METHOD Result < Bool > OutlineSelfIntersectionTest ( const Block < const Vector2d > &  outline )
static

Tests if a closed outline is self-intersected or have duplicated points.

参数
[in] outline Input outline.
返回
Outlines is self-intersected.

◆  OutlinesIntersectionTest() [1/2]

static MAXON_METHOD Result < Bool > OutlinesIntersectionTest ( const Block < const Vector2d > &  outline1 ,
const Block < const Vector2d > &  outline2  
)
static

Tests if two closed outlines intersect or either polyline is self-intersected.

Tests if two closed outlines intersect in at least one point or at least one of them is self-intersected or have duplicated points.

Precondition
Each outline has at least 3 points.
参数
[in] outline1 First outline.
[in] outline2 Second outline.
返回
Outlines intersect.

◆  OutlinesIntersectionTest() [2/2]

static MAXON_METHOD Result < Bool > OutlinesIntersectionTest ( const Block < const Block < const Vector2d >> &  outlines )
static

Tests if a set of closed outlines intersect or if either polyline is self-intersected.

Tests if a set of closed outlines intersect in at least one point or at least one of them is self-intersected or has duplicated points.

Precondition
Each outline has at least 3 points.
参数
[in] outlines Input outlines.
返回
Outlines intersect.