GPPolygon

Unit : GPPolygonUnit
Association : GPPolygonAsn
Inherits from : GPShape

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Description

An abstract polygon class.

Public Interface

CONSTRUCTOR Init;
Initializes the GPPolygon, containing zero points.

DESTRUCTOR Destroy; VIRTUAL;
Destroys the GPPolygon.

PROCEDURE AddPoint (point : GPPoint);
Adds a point to the polygon. A polygon can contain at most 30 points.

PROCEDURE ResetPoints;
Removes all points from the polygon.

PROCEDURE GetPoint (index : integer; VAR point : GPPoint);
Returns a particular point in the polygon. The index specifies the point number to return.

FUNCTION GetNumPoints : integer;
Returns the number of points in the Polygon.

FUNCTION Equal (rhs : GPPolygon): Boolean;
Returns TRUE if the other polygon is identical.

Subclasses

GPFilledClosedPolygon, GPFramedClosedPolygon

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