Open CASCADE Technology  6.5.4
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Public Member Functions
gp_Cylinder Class Reference

Describes an infinite cylindrical surface.
A cylinder is defined by its radius and positioned in space
with a coordinate system (a gp_Ax3 object), the "main <br> Axis" of which is the axis of the cylinder. This coordinate
system is the "local coordinate system" of the cylinder.
Note: when a gp_Cylinder cylinder is converted into a
Geom_CylindricalSurface cylinder, some implicit
properties of its local coordinate system are used explicitly:
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#include <gp_Cylinder.hxx>

Public Member Functions

DEFINE_STANDARD_ALLOC gp_Cylinder ()
 Creates a indefinite cylinder.

 gp_Cylinder (const gp_Ax3 &A3, const Standard_Real Radius)
 Creates a cylinder of radius Radius, whose axis is the "main <br> Axis" of A3. A3 is the local coordinate system of the cylinder. Raises ConstructionErrord if R < 0.0

void SetAxis (const gp_Ax1 &A1)
 Changes the symmetry axis of the cylinder. Raises ConstructionError if the direction of A1 is parallel to the "XDirection"
of the coordinate system of the cylinder.

void SetLocation (const gp_Pnt &Loc)
 Changes the location of the surface.

void SetPosition (const gp_Ax3 &A3)
 Change the local coordinate system of the surface.

void SetRadius (const Standard_Real R)
 Modifies the radius of this cylinder.
Exceptions
Standard_ConstructionError if R is negative.

void UReverse ()
 Reverses the U parametrization of the cylinder
reversing the YAxis.

void VReverse ()
 Reverses the V parametrization of the plane
reversing the Axis.

Standard_Boolean Direct () const
 Returns true if the local coordinate system of this cylinder is right-handed.

const gp_Ax1Axis () const
 Returns the symmetry axis of the cylinder.

void Coefficients (Standard_Real &A1, Standard_Real &A2, Standard_Real &A3, Standard_Real &B1, Standard_Real &B2, Standard_Real &B3, Standard_Real &C1, Standard_Real &C2, Standard_Real &C3, Standard_Real &D) const
 Computes the coefficients of the implicit equation of the quadric
in the absolute cartesian coordinate system :
A1.X**2 + A2.Y**2 + A3.Z**2 + 2.(B1.X.Y + B2.X.Z + B3.Y.Z) +
2.(C1.X + C2.Y + C3.Z) + D = 0.0

const gp_PntLocation () const
 Returns the "Location" point of the cylinder.

const gp_Ax3Position () const
 Returns the local coordinate system of the cylinder.

Standard_Real Radius () const
 Returns the radius of the cylinder.

gp_Ax1 XAxis () const
 Returns the axis X of the cylinder.

gp_Ax1 YAxis () const
 Returns the axis Y of the cylinder.

void Mirror (const gp_Pnt &P)
gp_Cylinder Mirrored (const gp_Pnt &P) const
 Performs the symmetrical transformation of a cylinder
with respect to the point P which is the center of the
symmetry.

void Mirror (const gp_Ax1 &A1)
gp_Cylinder Mirrored (const gp_Ax1 &A1) const
 Performs the symmetrical transformation of a cylinder with
respect to an axis placement which is the axis of the
symmetry.

void Mirror (const gp_Ax2 &A2)
gp_Cylinder Mirrored (const gp_Ax2 &A2) const
 Performs the symmetrical transformation of a cylinder with respect
to a plane. The axis placement A2 locates the plane of the
of the symmetry : (Location, XDirection, YDirection).

void Rotate (const gp_Ax1 &A1, const Standard_Real Ang)
gp_Cylinder Rotated (const gp_Ax1 &A1, const Standard_Real Ang) const
 Rotates a cylinder. A1 is the axis of the rotation.
Ang is the angular value of the rotation in radians.

void Scale (const gp_Pnt &P, const Standard_Real S)
gp_Cylinder Scaled (const gp_Pnt &P, const Standard_Real S) const
 Scales a cylinder. S is the scaling value.
The absolute value of S is used to scale the cylinder

void Transform (const gp_Trsf &T)
gp_Cylinder Transformed (const gp_Trsf &T) const
 Transforms a cylinder with the transformation T from class Trsf.

void Translate (const gp_Vec &V)
gp_Cylinder Translated (const gp_Vec &V) const
 Translates a cylinder in the direction of the vector V.
The magnitude of the translation is the vector's magnitude.

void Translate (const gp_Pnt &P1, const gp_Pnt &P2)
gp_Cylinder Translated (const gp_Pnt &P1, const gp_Pnt &P2) const
 Translates a cylinder from the point P1 to the point P2.

const gp_Ax3_CSFDB_Getgp_Cylinderpos () const
Standard_Real _CSFDB_Getgp_Cylinderradius () const
void _CSFDB_Setgp_Cylinderradius (const Standard_Real p)

Detailed Description


Constructor & Destructor Documentation


Member Function Documentation


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