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
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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| gp_Cylinder () |
| Creates a indefinite cylinder. More...
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| gp_Cylinder (const gp_Ax3 &A3, const Standard_Real Radius) |
| Creates a cylinder of radius Radius, whose axis is the "main
Axis" of A3. A3 is the local coordinate system of the cylinder. Raises ConstructionErrord if R < 0.0. More...
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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. More...
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void | SetLocation (const gp_Pnt &Loc) |
| Changes the location of the surface. More...
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void | SetPosition (const gp_Ax3 &A3) |
| Change the local coordinate system of the surface. More...
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void | SetRadius (const Standard_Real R) |
| Modifies the radius of this cylinder. Exceptions Standard_ConstructionError if R is negative. More...
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void | UReverse () |
| Reverses the U parametrization of the cylinder reversing the YAxis. More...
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void | VReverse () |
| Reverses the V parametrization of the plane reversing the Axis. More...
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Standard_Boolean | Direct () const |
| Returns true if the local coordinate system of this cylinder is right-handed. More...
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const gp_Ax1 & | Axis () const |
| Returns the symmetry axis of the cylinder. More...
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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. More...
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const gp_Pnt & | Location () const |
| Returns the "Location" point of the cylinder. More...
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const gp_Ax3 & | Position () const |
| Returns the local coordinate system of the cylinder. More...
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Standard_Real | Radius () const |
| Returns the radius of the cylinder. More...
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gp_Ax1 | XAxis () const |
| Returns the axis X of the cylinder. More...
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gp_Ax1 | YAxis () const |
| Returns the axis Y of the cylinder. More...
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void | Mirror (const gp_Pnt &P) |
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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. More...
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void | Mirror (const gp_Ax1 &A1) |
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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. More...
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void | Mirror (const gp_Ax2 &A2) |
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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). More...
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void | Rotate (const gp_Ax1 &A1, const Standard_Real Ang) |
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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. More...
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void | Scale (const gp_Pnt &P, const Standard_Real S) |
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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. More...
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void | Transform (const gp_Trsf &T) |
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gp_Cylinder | Transformed (const gp_Trsf &T) const |
| Transforms a cylinder with the transformation T from class Trsf. More...
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void | Translate (const gp_Vec &V) |
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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. More...
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void | Translate (const gp_Pnt &P1, const gp_Pnt &P2) |
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gp_Cylinder | Translated (const gp_Pnt &P1, const gp_Pnt &P2) const |
| Translates a cylinder from the point P1 to the point P2. More...
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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
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:
- its origin, "X Direction", "Y Direction" and "main
Direction" are used directly to define the parametric directions on the cylinder and the origin of the parameters,
- its implicit orientation (right-handed or left-handed) gives an orientation (direct or indirect) to the Geom_CylindricalSurface cylinder. See Also gce_MakeCylinder which provides functions for more complex cylinder constructions Geom_CylindricalSurface which provides additional functions for constructing cylinders and works, in particular, with the parametric equations of cylinders gp_Ax3