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Public Member Functions
Poly_PolygonOnTriangulation Class Reference

This class provides a polygon in 3D space, based on the triangulation
of a surface. It may be the approximate representation of a
curve on the surface, or more generally the shape.
A PolygonOnTriangulation is defined by a table of
nodes. Each node is an index in the table of nodes specific
to a triangulation, and represents a point on the surface. If
the polygon is closed, the index of the point of closure is
repeated at the end of the table of nodes.
If the polygon is an approximate representation of a curve
on a surface, you can associate with each of its nodes the
value of the parameter of the corresponding point on the
curve.represents a 3d Polygon

#include <Poly_PolygonOnTriangulation.hxx>

Inheritance diagram for Poly_PolygonOnTriangulation:
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Public Member Functions

 Poly_PolygonOnTriangulation (const TColStd_Array1OfInteger &Nodes)
 Constructs a 3D polygon on the triangulation of a shape,
defined by the table of nodes, <Nodes>.

 Poly_PolygonOnTriangulation (const TColStd_Array1OfInteger &Nodes, const TColStd_Array1OfReal &Parameters)
 Constructs a 3D polygon on the triangulation of a shape, defined by:

Standard_Real Deflection () const
 Returns the deflection of this polygon

void Deflection (const Standard_Real D)
 Sets the deflection of this polygon to D.
See more on deflection in Poly_Polygones2D.

Standard_Integer NbNodes () const
 Returns the number of nodes for 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.

const TColStd_Array1OfIntegerNodes () const
 Returns the table of nodes for this polygon. A node value
is an index in the table of nodes specific to an existing
triangulation of a shape.

Standard_Boolean HasParameters () const
 Returns true if parameters are associated with the nodes in this polygon.

Handle_TColStd_HArray1OfReal Parameters () const
 Returns the table of the parameters associated with each node in this polygon.
Warning
Use the function HasParameters to check if parameters
are associated with the nodes in this polygon.



Constructor & Destructor Documentation

  • the table of nodes, Nodes, and the table of parameters, <Parameters>.
    where:

a node value is an index in the table of nodes specific
to an existing triangulation of a shape

  • and a parameter value is the value of the parameter of
    the corresponding point on the curve approximated by
    the constructed polygon.
    Warning
    The tables Nodes and Parameters must be the same size.
    This property is not checked at construction time.

Member Function Documentation

Handle_TColStd_HArray1OfReal Poly_PolygonOnTriangulation::Parameters ( ) const

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