This class implements the following algorithms used to create Parab2d from gp. Defines an infinite parabola. An axis placement one axis defines the local cartesian coordinate system ("XAxis") of the parabola. The vertex of the parabola is the "Location" point of the local coordinate system of the parabola. The "XAxis" of the parabola is its axis of symmetry. The "XAxis" is oriented from the vertex of the parabola to the Focus of the parabola. The "YAxis" is parallel to the directrix of the parabola and its "Location" point is the vertex of the parabola. The equation of the parabola in the local coordinate system is Y**2 = (2*P) * X P is the distance between the focus and the directrix of the parabola called Parameter). The focal length F = P/2 is the distance between the vertex and the focus of the parabola.
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#include <gce_MakeParab2d.hxx>
This class implements the following algorithms used to create Parab2d from gp. Defines an infinite parabola. An axis placement one axis defines the local cartesian coordinate system ("XAxis") of the parabola. The vertex of the parabola is the "Location" point of the local coordinate system of the parabola. The "XAxis" of the parabola is its axis of symmetry. The "XAxis" is oriented from the vertex of the parabola to the Focus of the parabola. The "YAxis" is parallel to the directrix of the parabola and its "Location" point is the vertex of the parabola. The equation of the parabola in the local coordinate system is Y**2 = (2*P) * X P is the distance between the focus and the directrix of the parabola called Parameter). The focal length F = P/2 is the distance between the vertex and the focus of the parabola.
- Create a Parab2d from one apex and the center.
- Create a Parab2d with the directrix and the focus point.
- Create a Parab2d with its vertex point and its axis of symetry and its focus length.
Creates a parabola with its axis of symmetry ("MirrorAxis") and its focal length. Warnings : It is possible to have Focal = 0. The status is "NullFocalLength" Raised if Focal < 0.0.
Creates a parabola with its local coordinate system and its focal length. Warnings : It is possible to have Focal = 0. The status is "NullFocalLength" Raised if Focal < 0.0.
Creates a parabola with the directrix and the focus point. The sense of parametrization is given by Sense.
Make an Parab2d with S1 as the Focal point and Center as the apex of the parabola Warning The MakeParab2d class does not prevent the construction of a parabola with a null focal distance. If an error occurs (that is, when IsDone returns false), the Status function returns:
- gce_NullFocusLength if Focal is less than 0.0, or
- gce_NullAxis if S1 and Center are coincident.
const gp_Parab2d& gce_MakeParab2d::Operator |
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const gp_Parab2d& gce_MakeParab2d::Value |
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Returns the constructed parabola. Exceptions StdFail_NotDone if no parabola is constructed.
The documentation for this class was generated from the following file: