#include <gp_Parab2d.hxx>
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
gp_Parab2d () | |
Creates an indefinite parabola. . | |
gp_Parab2d (const gp_Ax2d &MirrorAxis, const Standard_Real Focal, const Standard_Boolean Sense=Standard_True) | |
Creates a parabola with its vertex point, its axis of symmetry ("XAxis") and its focal length. The sense of parametrization is given by Sense. Warnings : It is possible to have Focal = 0. Raises ConstructionError if Focal < 0.0 . | |
gp_Parab2d (const gp_Ax22d &A, const Standard_Real Focal) | |
Creates a parabola with its vertex point, its axis of symmetry ("XAxis") and its focal length. The sense of parametrization is given by A. Warnings : It is possible to have Focal = 0. Raises ConstructionError if Focal < 0.0 . | |
Standard_EXPORT | gp_Parab2d (const gp_Ax2d &D, const gp_Pnt2d &F, const Standard_Boolean Sense=Standard_True) |
Creates a parabola with the directrix and the focus point. The sense of parametrization is given by Sense. . | |
Standard_EXPORT | gp_Parab2d (const gp_Ax22d &D, const gp_Pnt2d &F) |
Creates a parabola with the directrix and the focus point. The Sense of parametrization is given by D. . | |
void | SetFocal (const Standard_Real Focal) |
Changes the focal distance of the parabola Warnings : It is possible to have Focal = 0. Raises ConstructionError if Focal < 0.0 . | |
void | SetLocation (const gp_Pnt2d &P) |
Changes the "Location" point of the parabola. It is the vertex of the parabola. . | |
void | SetMirrorAxis (const gp_Ax2d &A) |
Modifies this parabola, by redefining its local coordinate system so that its origin and "X Direction" become those of the axis MA. The "Y Direction" of the local coordinate system is then recomputed. The orientation of the local coordinate system is not modified. . | |
void | SetAxis (const gp_Ax22d &A) |
Changes the local coordinate system of the parabola. The "Location" point of A becomes the vertex of the parabola. . | |
Standard_EXPORT void | Coefficients (Standard_Real &A, Standard_Real &B, Standard_Real &C, Standard_Real &D, Standard_Real &E, Standard_Real &F) const |
Computes the coefficients of the implicit equation of the parabola. A * (X**2) + B * (Y**2) + 2*C*(X*Y) + 2*D*X + 2*E*Y + F = 0. . | |
gp_Ax2d | Directrix () const |
Computes the directrix of the parabola. The directrix is: - a line parallel to the "Y Direction" of the local coordinate system of this parabola, and - located on the negative side of the axis of symmetry, at a distance from the apex which is equal to the focal length of this parabola. The directrix is returned as an axis (a gp_Ax2d object), the origin of which is situated on the "X Axis" of this parabola. . | |
Standard_Real | Focal () const |
Returns the distance between the vertex and the focus of the parabola. . | |
gp_Pnt2d | Focus () const |
Returns the focus of the parabola. . | |
gp_Pnt2d | Location () const |
Returns the vertex of the parabola. . | |
gp_Ax2d | MirrorAxis () const |
Returns the symmetry axis of the parabola. The "Location" point of this axis is the vertex of the parabola. . | |
gp_Ax22d | Axis () const |
Returns the local coordinate system of the parabola. The "Location" point of this axis is the vertex of the parabola. . | |
Standard_Real | Parameter () const |
Returns the distance between the focus and the directrix of the parabola. . | |
void | Reverse () |
gp_Parab2d | Reversed () const |
Reverses the orientation of the local coordinate system of this parabola (the "Y Direction" is reversed). Therefore, the implicit orientation of this parabola is reversed. Note: - Reverse assigns the result to this parabola, while - Reversed creates a new one. . | |
Standard_Boolean | IsDirect () const |
Returns true if the local coordinate system is direct and false in the other case. . | |
Standard_EXPORT void | Mirror (const gp_Pnt2d &P) |
Standard_EXPORT gp_Parab2d | Mirrored (const gp_Pnt2d &P) const |
Performs the symmetrical transformation of a parabola with respect to the point P which is the center of the symmetry . | |
Standard_EXPORT void | Mirror (const gp_Ax2d &A) |
Standard_EXPORT gp_Parab2d | Mirrored (const gp_Ax2d &A) const |
Performs the symmetrical transformation of a parabola with respect to an axis placement which is the axis of the symmetry. . | |
void | Rotate (const gp_Pnt2d &P, const Standard_Real Ang) |
gp_Parab2d | Rotated (const gp_Pnt2d &P, const Standard_Real Ang) const |
Rotates a parabola. P is the center of the rotation. Ang is the angular value of the rotation in radians. . | |
void | Scale (const gp_Pnt2d &P, const Standard_Real S) |
gp_Parab2d | Scaled (const gp_Pnt2d &P, const Standard_Real S) const |
Scales a parabola. S is the scaling value. If S is negative the direction of the symmetry axis "XAxis" is reversed and the direction of the "YAxis" too. . | |
void | Transform (const gp_Trsf2d &T) |
gp_Parab2d | Transformed (const gp_Trsf2d &T) const |
Transforms an parabola with the transformation T from class Trsf2d. . | |
void | Translate (const gp_Vec2d &V) |
gp_Parab2d | Translated (const gp_Vec2d &V) const |
Translates a parabola in the direction of the vector V. The magnitude of the translation is the vector's magnitude. . | |
void | Translate (const gp_Pnt2d &P1, const gp_Pnt2d &P2) |
gp_Parab2d | Translated (const gp_Pnt2d &P1, const gp_Pnt2d &P2) const |
Translates a parabola from the point P1 to the point P2. . | |
const gp_Ax22d & | _CSFDB_Getgp_Parab2dpos () const |
Standard_Real | _CSFDB_Getgp_Parab2dfocalLength () const |
void | _CSFDB_Setgp_Parab2dfocalLength (const Standard_Real p) |
Private Attributes | |
gp_Ax22d | pos |
Standard_Real | focalLength |
Friends | |
Standard_EXPORT friend Handle_Standard_Type & | gp_Parab2d_Type_ () |
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