Open CASCADE Technology  6.5.4
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Public Member Functions
GC_MakeCylindricalSurface Class Reference

This class implements the following algorithms used
to create a CylindricalSurface from Geom.
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#include <GC_MakeCylindricalSurface.hxx>

Inheritance diagram for GC_MakeCylindricalSurface:
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Public Member Functions

DEFINE_STANDARD_ALLOC GC_MakeCylindricalSurface (const gp_Ax2 &A2, const Standard_Real Radius)
 A2 defines the local coordinate system of the cylindrical surface.
The "ZDirection" of A2 defines the direction of the surface's
axis of symmetry.
At the creation the parametrization of the surface is defined
such that the normal Vector (N = D1U ^ D1V) is oriented towards
the "outside region" of the surface.
Warnings :
It is not forbidden to create a cylindrical surface with
Radius = 0.0
Status is "NegativeRadius" if Radius < 0.0

 GC_MakeCylindricalSurface (const gp_Cylinder &C)
 Creates a CylindricalSurface from a non persistent Cylinder
from package gp.

 GC_MakeCylindricalSurface (const gp_Cylinder &Cyl, const gp_Pnt &Point)
 Make a CylindricalSurface from Geom <TheCylinder>
parallel to another
CylindricalSurface <Cylinder> and passing through a
Pnt <Point>.

 GC_MakeCylindricalSurface (const gp_Cylinder &Cyl, const Standard_Real Dist)
 Make a CylindricalSurface from Geom <TheCylinder>
parallel to another
CylindricalSurface <Cylinder> at the distance <Dist>
which can be greater or lower than zero.
The radius of the result is the absolute value of the
radius of <Cyl> plus <Dist>

 GC_MakeCylindricalSurface (const gp_Pnt &P1, const gp_Pnt &P2, const gp_Pnt &P3)
 Make a CylindricalSurface from Geom <TheCylinder>
passing through 3 Pnt <P1>,<P2>,<P3>.
Its axis is <P1P2> and its radius is the distance
between <P3> and <P1P2>

 GC_MakeCylindricalSurface (const gp_Ax1 &Axis, const Standard_Real Radius)
 Make a CylindricalSurface by its axis <Axis> and radius
<Radius>.

 GC_MakeCylindricalSurface (const gp_Circ &Circ)
 Make a CylindricalSurface by its circular base.

const
Handle_Geom_CylindricalSurface & 
Value () const
 Returns the constructed cylinder.
Exceptions StdFail_NotDone if no cylinder is constructed.

const
Handle_Geom_CylindricalSurface & 
Operator () const
 operator Handle_Geom_CylindricalSurface () const

Detailed Description

      * Create a CylindricalSurface parallel to another and <br>
      passing through a point. <br>
      * Create a CylindricalSurface parallel to another at a <br>
      distance <br>
        <Dist>. <br>
      * Create a CylindricalSurface passing through 3 points. <br>
      * Create a CylindricalSurface by its axis and radius. <br>
      * Create a cylindricalSurface by its circular base. <br>

The local coordinate system of the CylindricalSurface is defined
with an axis placement (see class ElementarySurface).

The "ZAxis" is the symmetry axis of the CylindricalSurface,
it gives the direction of increasing parametric value V.

The parametrization range is :
U [0, 2*PI], V ]- infinite, + infinite[

The "XAxis" and the "YAxis" define the placement plane of the
surface (Z = 0, and parametric value V = 0) perpendicular to
the symmetry axis. The "XAxis" defines the origin of the
parameter U = 0. The trigonometric sense gives the positive
orientation for the parameter U.


Constructor & Destructor Documentation


Member Function Documentation

const Handle_Geom_CylindricalSurface& GC_MakeCylindricalSurface::Operator ( ) const
GC_MakeCylindricalSurface::operator Handle_Geom_CylindricalSurface ( ) const
const Handle_Geom_CylindricalSurface& GC_MakeCylindricalSurface::Value ( ) const

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