AnyCAD Rapid API 2024
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Public 成员函数  
GElips ()  
GElips (GAx2 theA2, double theMajorRadius, double theMinorRadius)  
void  SetAxis (GAx1 theA1) 
void  SetLocation (GPnt theP) 
void  SetMajorRadius (double theMajorRadius) 
void  SetMinorRadius (double theMinorRadius) 
void  SetPosition (GAx2 theA2) 
double  Area () 
GAx1  Axis () 
GAx1  Directrix1 () 
GAx1  Directrix2 () 
double  Eccentricity () 
double  Focal () 
GPnt  Focus1 () 
GPnt  Focus2 () 
GPnt  Location () 
double  MajorRadius () 
double  MinorRadius () 
double  Parameter () 
GAx2  Position () 
GAx1  XAxis () 
GAx1  YAxis () 
void  Mirror (GPnt theP) 
GElips  Mirrored (GPnt theP) 
void  Mirror (GAx1 theA1) 
GElips  Mirrored (GAx1 theA1) 
void  Mirror (GAx2 theA2) 
GElips  Mirrored (GAx2 theA2) 
void  Rotate (GAx1 theA1, double theAng) 
GElips  Rotated (GAx1 theA1, double theAng) 
void  Scale (GPnt theP, double theS) 
GElips  Scaled (GPnt theP, double theS) 
void  Transform (GTrsf theT) 
GElips  Transformed (GTrsf theT) 
void  Translate (GVec theV) 
GElips  Translated (GVec theV) 
void  Translate (GPnt theP1, GPnt theP2) 
GElips  Translated (GPnt theP1, GPnt theP2) 
Describes an ellipse in 3D space. An ellipse is defined by its major and minor radii and positioned in space with a coordinate system (a gp_Ax2 object) as follows:  the origin of the coordinate system is the center of the ellipse,  its "X Direction" defines the major axis of the ellipse, and  its "Y Direction" defines the minor axis of the ellipse. Together, the origin, "X Direction" and "Y Direction" of this coordinate system define the plane of the ellipse. This coordinate system is the "local coordinate system" of the ellipse. In this coordinate system, the equation of the ellipse is: X*X / (MajorRadius**2) + Y*Y / (MinorRadius**2) = 1.0
The "main Direction" of the local coordinate system gives the normal vector to the plane of the ellipse. This vector gives an implicit orientation to the ellipse (definition of the trigonometric sense). We refer to the "main Axis" of the local coordinate system as the "Axis" of the ellipse. See Also gce_MakeElips which provides functions for more complex ellipse constructions Geom_Ellipse which provides additional functions for constructing ellipses and works, in particular, with the parametric equations of ellipses
GElips.GElips  (  ) 
Creates an indefinite ellipse.
GElips.GElips  (  GAx2  theA2, 
double  theMajorRadius,  
double  theMinorRadius ) 
The major radius of the ellipse is on the "XAxis" and the minor radius is on the "YAxis" of the ellipse. The "XAxis" is defined with the "XDirection" of theA2 and the "YAxis" is defined with the "YDirection" of theA2. Warnings : It is not forbidden to create an ellipse with theMajorRadius = theMinorRadius. Raises ConstructionError if theMajorRadius < theMinorRadius or theMinorRadius < 0.
double GElips.Area  (  ) 
Computes the area of the Ellipse.
GAx1 GElips.Axis  (  ) 
Computes the axis normal to the plane of the ellipse.
GAx1 GElips.Directrix1  (  ) 
Computes the first or second directrix of this ellipse. These are the lines, in the plane of the ellipse, normal to the major axis, at a distance equal to MajorRadius/e from the center of the ellipse, where e is the eccentricity of the ellipse. The first directrix (Directrix1) is on the positive side of the major axis. The second directrix (Directrix2) is on the negative side. The directrix is returned as an axis (gp_Ax1 object), the origin of which is situated on the "X Axis" of the local coordinate system of this ellipse. Exceptions Standard_ConstructionError if the eccentricity is null (the ellipse has degenerated into a circle).
GAx1 GElips.Directrix2  (  ) 
This line is obtained by the symmetrical transformation of "Directrix1" with respect to the "YAxis" of the ellipse. Exceptions Standard_ConstructionError if the eccentricity is null (the ellipse has degenerated into a circle).
double GElips.Eccentricity  (  ) 
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. Raises ConstructionError if MajorRadius = 0.0
double GElips.Focal  (  ) 
Computes the focal distance. It is the distance between the two focus focus1 and focus2 of the ellipse.
GPnt GElips.Focus1  (  ) 
Returns the first focus of the ellipse. This focus is on the positive side of the "XAxis" of the ellipse.
GPnt GElips.Focus2  (  ) 
Returns the second focus of the ellipse. This focus is on the negative side of the "XAxis" of the ellipse.
GPnt GElips.Location  (  ) 
Returns the center of the ellipse. It is the "Location" point of the coordinate system of the ellipse.
double GElips.MajorRadius  (  ) 
Returns the major radius of the ellipse.
double GElips.MinorRadius  (  ) 
Returns the minor radius of the ellipse.
Performs the symmetrical transformation of an ellipse with respect to an axis placement which is the axis of the symmetry.
Performs the symmetrical transformation of an ellipse with respect to a plane. The axis placement theA2 locates the plane of the symmetry (Location, XDirection, YDirection).
Performs the symmetrical transformation of an ellipse with respect to the point theP which is the center of the symmetry.
double GElips.Parameter  (  ) 
Returns p = (1  e * e) * MajorRadius where e is the eccentricity of the ellipse. Returns 0 if MajorRadius = 0
GAx2 GElips.Position  (  ) 
Returns the coordinate system of the ellipse.
Rotates an ellipse. theA1 is the axis of the rotation. theAng is the angular value of the rotation in radians.
void GElips.SetAxis  (  GAx1  theA1  ) 
Changes the axis normal to the plane of the ellipse. It modifies the definition of this plane. The "XAxis" and the "YAxis" are recomputed. The local coordinate system is redefined so that:  its origin and "main Direction" become those of the axis theA1 (the "X Direction" and "Y Direction" are then recomputed in the same way as for any gp_Ax2), or Raises ConstructionError if the direction of theA1 is parallel to the direction of the "XAxis" of the ellipse.
void GElips.SetLocation  (  GPnt  theP  ) 
Modifies this ellipse, by redefining its local coordinate so that its origin becomes theP.
void GElips.SetMajorRadius  (  double  theMajorRadius  ) 
The major radius of the ellipse is on the "XAxis" (major axis) of the ellipse. Raises ConstructionError if theMajorRadius < MinorRadius.
void GElips.SetMinorRadius  (  double  theMinorRadius  ) 
The minor radius of the ellipse is on the "YAxis" (minor axis) of the ellipse. Raises ConstructionError if theMinorRadius > MajorRadius or MinorRadius < 0.
void GElips.SetPosition  (  GAx2  theA2  ) 
Modifies this ellipse, by redefining its local coordinate so that it becomes theA2.
Transforms an ellipse with the transformation theT from class Trsf.
Translates an ellipse from the point theP1 to the point theP2.
Translates an ellipse in the direction of the vector theV. The magnitude of the translation is the vector's magnitude.
GAx1 GElips.XAxis  (  ) 
Returns the "XAxis" of the ellipse whose origin is the center of this ellipse. It is the major axis of the ellipse.
GAx1 GElips.YAxis  (  ) 
Returns the "YAxis" of the ellipse whose unit vector is the "X Direction" or the "Y Direction" of the local coordinate system of this ellipse. This is the minor axis of the ellipse.