#include <gp_Elips2d.hxx>
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
gp_Elips2d () | |
Creates an indefinite ellipse. . | |
gp_Elips2d (const gp_Ax2d &MajorAxis, const Standard_Real MajorRadius, const Standard_Real MinorRadius, const Standard_Boolean Sense=Standard_True) | |
Creates an ellipse with the major axis, the major and the minor radius. The location of the MajorAxis is the center of the ellipse. The sense of parametrization is given by Sense. Warnings : It is possible to create an ellipse with MajorRadius = MinorRadius. Raises ConstructionError if MajorRadius < MinorRadius or MinorRadius < 0.0 . | |
Standard_EXPORT | gp_Elips2d (const gp_Ax22d &A, const Standard_Real MajorRadius, const Standard_Real MinorRadius) |
Creates an ellipse with radii MajorRadius and MinorRadius, positioned in the plane by coordinate system A where: - the origin of A is the center of the ellipse, - the "X Direction" of A defines the major axis of the ellipse, that is, the major radius MajorRadius is measured along this axis, and - the "Y Direction" of A defines the minor axis of the ellipse, that is, the minor radius MinorRadius is measured along this axis, and - the orientation (direct or indirect sense) of A gives the orientation of the ellipse. Warnings : It is possible to create an ellipse with MajorRadius = MinorRadius. Raises ConstructionError if MajorRadius < MinorRadius or MinorRadius < 0.0 . | |
Standard_EXPORT void | SetLocation (const gp_Pnt2d &P) |
Modifies this ellipse, by redefining its local coordinate system so that - its origin becomes P. . | |
Standard_EXPORT void | SetMajorRadius (const Standard_Real MajorRadius) |
Changes the value of the major radius. Raises ConstructionError if MajorRadius < MinorRadius. . | |
Standard_EXPORT void | SetMinorRadius (const Standard_Real MinorRadius) |
Changes the value of the minor radius. Raises ConstructionError if MajorRadius < MinorRadius or MinorRadius < 0.0 . | |
Standard_EXPORT void | SetAxis (const gp_Ax22d &A) |
Modifies this ellipse, by redefining its local coordinate system so that it becomes A. . | |
Standard_EXPORT void | SetXAxis (const gp_Ax2d &A) |
Modifies this ellipse, by redefining its local coordinate system so that its origin and its "X Direction" become those of the axis A. The "Y Direction" is then recomputed. The orientation of the local coordinate system is not modified. . | |
Standard_EXPORT void | SetYAxis (const gp_Ax2d &A) |
Modifies this ellipse, by redefining its local coordinate system so that its origin and its "Y Direction" become those of the axis A. The "X Direction" is then recomputed. The orientation of the local coordinate system is not modified. . | |
Standard_Real | Area () const |
Computes the area of the ellipse. . | |
Standard_EXPORT void | Coefficients (Standard_Real &A, Standard_Real &B, Standard_Real &C, Standard_Real &D, Standard_Real &E, Standard_Real &F) const |
Returns the coefficients of the implicit equation of the ellipse. A * (X**2) + B * (Y**2) + 2*C*(X*Y) + 2*D*X + 2*E*Y + F = 0. . | |
gp_Ax2d | Directrix1 () const |
This directrix is the line normal to the XAxis of the ellipse in the local plane (Z = 0) at a distance d = MajorRadius / e from the center of the ellipse, where e is the eccentricity of the ellipse. This line is parallel to the "YAxis". The intersection point between directrix1 and the "XAxis" is the location point of the directrix1. This point is on the positive side of the "XAxis". Raised if Eccentricity = 0.0. (The ellipse degenerates into a circle) . | |
gp_Ax2d | Directrix2 () const |
This line is obtained by the symmetrical transformation of "Directrix1" with respect to the minor axis of the ellipse. Raised if Eccentricity = 0.0. (The ellipse degenerates into a circle). . | |
Standard_Real | Eccentricity () const |
Returns the eccentricity of the ellipse between 0.0 and 1.0 If f is the distance between the center of the ellipse and the Focus1 then the eccentricity e = f / MajorRadius. Returns 0 if MajorRadius = 0. . | |
Standard_Real | Focal () const |
Returns the distance between the center of the ellipse and focus1 or focus2. . | |
gp_Pnt2d | Focus1 () const |
Returns the first focus of the ellipse. This focus is on the positive side of the major axis of the ellipse. . | |
gp_Pnt2d | Focus2 () const |
Returns the second focus of the ellipse. This focus is on the negative side of the major axis of the ellipse. . | |
const gp_Pnt2d & | Location () const |
Returns the center of the ellipse. . | |
Standard_Real | MajorRadius () const |
Returns the major radius of the Ellipse. . | |
Standard_Real | MinorRadius () const |
Returns the minor radius of the Ellipse. . | |
Standard_Real | Parameter () const |
Returns p = (1 - e * e) * MajorRadius where e is the eccentricity of the ellipse. Returns 0 if MajorRadius = 0 . | |
const gp_Ax22d & | Axis () const |
Returns the major axis of the ellipse. . | |
gp_Ax2d | XAxis () const |
Returns the major axis of the ellipse. . | |
gp_Ax2d | YAxis () const |
Returns the minor axis of the ellipse. //! Reverses the direction of the circle. . | |
void | Reverse () |
gp_Elips2d | Reversed () const |
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_Elips2d | Mirrored (const gp_Pnt2d &P) const |
Performs the symmetrical transformation of a ellipse with respect to the point P which is the center of the symmetry . | |
Standard_EXPORT void | Mirror (const gp_Ax2d &A) |
Standard_EXPORT gp_Elips2d | Mirrored (const gp_Ax2d &A) const |
Performs the symmetrical transformation of a ellipse with respect to an axis placement which is the axis of the symmetry. . | |
Standard_EXPORT void | Rotate (const gp_Pnt2d &P, const Standard_Real Ang) |
Standard_EXPORT gp_Elips2d | Rotated (const gp_Pnt2d &P, const Standard_Real Ang) const |
Standard_EXPORT void | Scale (const gp_Pnt2d &P, const Standard_Real S) |
Standard_EXPORT gp_Elips2d | Scaled (const gp_Pnt2d &P, const Standard_Real S) const |
Scales a ellipse. S is the scaling value. . | |
Standard_EXPORT void | Transform (const gp_Trsf2d &T) |
Standard_EXPORT gp_Elips2d | Transformed (const gp_Trsf2d &T) const |
Transforms an ellipse with the transformation T from class Trsf2d. . | |
Standard_EXPORT void | Translate (const gp_Vec2d &V) |
Standard_EXPORT gp_Elips2d | Translated (const gp_Vec2d &V) const |
Translates a ellipse in the direction of the vector V. The magnitude of the translation is the vector's magnitude. . | |
Standard_EXPORT void | Translate (const gp_Pnt2d &P1, const gp_Pnt2d &P2) |
Standard_EXPORT gp_Elips2d | Translated (const gp_Pnt2d &P1, const gp_Pnt2d &P2) const |
Translates a ellipse from the point P1 to the point P2. . | |
const gp_Ax22d & | _CSFDB_Getgp_Elips2dpos () const |
Standard_Real | _CSFDB_Getgp_Elips2dmajorRadius () const |
void | _CSFDB_Setgp_Elips2dmajorRadius (const Standard_Real p) |
Standard_Real | _CSFDB_Getgp_Elips2dminorRadius () const |
void | _CSFDB_Setgp_Elips2dminorRadius (const Standard_Real p) |
Private Attributes | |
gp_Ax22d | pos |
Standard_Real | majorRadius |
Standard_Real | minorRadius |
Friends | |
Standard_EXPORT friend Handle_Standard_Type & | gp_Elips2d_Type_ () |
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