#include <Poly_Polygon2D.hxx>
Inheritance diagram for Poly_Polygon2D:
Public Member Functions | |
Standard_EXPORT | Poly_Polygon2D (const TColgp_Array1OfPnt2d &Nodes) |
Constructs a 2D polygon defined by the table of points, <nodes>. . | |
Standard_EXPORT Standard_Real | Deflection () const |
Returns the deflection of this polygon. Deflection is used in cases where the polygon is an approximate representation of a curve. Deflection represents the maximum distance permitted between any point on the curve and the corresponding point on the polygon. By default the deflection value is equal to 0. An algorithm using this 2D polygon with a deflection value equal to 0 considers that it is working with a true polygon and not with an approximate representation of a curve. The Deflection function is used to modify the deflection value of this polygon. The deflection value can be used by any algorithm working with 2D polygons. For example: - An algorithm may use a unique deflection value for all its polygons. In this case it is not necessary to use the Deflection function. - Or an algorithm may want to attach a different deflection to each polygon. In this case, the Deflection function is used to set a value on each polygon, and later to fetch the value. . | |
Standard_EXPORT void | Deflection (const Standard_Real D) |
Sets the deflection of this polygon to D . | |
Standard_Integer | NbNodes () const |
Returns the number of nodes in this polygon. Note: If the polygon is closed, the point of closure is repeated at the end of its table of nodes. Thus, on a closed triangle, the function NbNodes returns 4. . | |
Standard_EXPORT const TColgp_Array1OfPnt2d & | Nodes () const |
Returns the table of nodes for this polygon. . | |
Standard_EXPORT const | Handle (Standard_Type)&DynamicType() const |
Private Attributes | |
Standard_Real | myDeflection |
Standard_Integer | myNbNodes |
TColgp_Array1OfPnt2d | myNodes |
|
|
|
|
|
|
|
Reimplemented from MMgt_TShared. |
|
|
|
|
|
|
|
|
|
|