LPV Geometry Library, provide geometric functionalities. More...

Data Structures
interface	ILArc
	This interface represents an arc(LArc object) More...

interface	ILCircle
	This interface represents a single circle(LCircle object). More...

interface	ILEllipse
	This interface represents an ellipse(LEllipse object) More...

interface	ILGeomObject
	This is a base interface for the geometric primitive objects, such as a point, a line, a polygon, etc. More...

interface	ILLine
	This interface represents a single straight line(LLine object). More...

interface	ILPoint
	This interface represents a single point(LPoint object). More...

interface	ILPoints
	This interface represents a collection of points(LPoints object). More...

interface	ILPolygon
	This interface represents a polygon(LPolygon object). More...

interface	ILRect
	This interface represents a rotatable rectangle(LRect object) More...

interface	ILTransform
	This interface represents 2D transformations of a coordinate system. More...

class	LArc

class	LCircle

class	LEllipse

class	LLine

class	LPoint

class	LPoints

class	LPolygon

class	LRect

class	LTransform

Enumerations
enum	LPVGeomHandle { LPVGeomHandleUnknown = -1 , LPVGeomHandleNone = 0 , LPVGeomHandleInside = 16 , LPVGeomHandleMoveVertex = 64 }
	This enumeration represents the type of a geometric primitive handle for drag. More...

enum	LPVIntersectType { LPVIntersectUnbounded = 0 , LPVIntersectBoundedLeft = 1 , LPVIntersectBounded = 2 , LPVIntersectBoundedRight = 3 , LPVIntersectNone = 4 , LPVIntersectBoundedPartial = 1 }
	This enumeration represents the type of the intersection. More...

enum	LPVPointTestResult { LPVPointTestInside = 0 , LPVPointTestOutside = 1 , LPVPointTestOnEdge = 2 }
	This enumeration represents the result of the point test. More...

Detailed Description

LPV Geometry Library, provide geometric functionalities.

This library provides miscellaneous functions for geometry calculation, measurement and display. To include the definitions of the library's classes, use the following directive:

Example Code

Enumeration Type Documentation

◆ LPVGeomHandle

enum LPVGeomHandle

This enumeration represents the type of a geometric primitive handle for drag.

Enumerator
LPVGeomHandleUnknown	Unknown handle, usually used as initial value
LPVGeomHandleNone	None, it's not a dragable handle
LPVGeomHandleInside	Inside handle, it's inside or on the geometric primitive, used to move the object. For most geometric classes, this is only available handle.
LPVGeomHandleMoveVertex	Vertex move handle, used to drag a nearest vertex to current cursor position. Works for LLine, LPolygon and LPoints.

◆ LPVIntersectType

enum LPVIntersectType

This enumeration represents the type of the intersection.

Enumerator
LPVIntersectUnbounded	The two geometric shapes intersect, but not within the range defined by their lengths.
LPVIntersectBoundedLeft	The two geometric shapes intersect within the range of the current shape, but not in range of the second.
LPVIntersectBounded	The two geometric shapes intersect within their ranges.
LPVIntersectBoundedRight	The two geometric shapes intersect within the range of the input shape, but not in range of the first.
LPVIntersectNone	No intersection, for example, two parallel lines.
LPVIntersectBoundedPartial	Some of the intersection is bounded. It's used when the intersection only has one meaningful boundary.

◆ LPVPointTestResult

enum LPVPointTestResult

This enumeration represents the result of the point test.

Enumerator
LPVPointTestInside	The point is inside the target shape
LPVPointTestOutside	The point is outside the target shape
LPVPointTestOnEdge	The point is on the edge the target shape