IEllipse_DG Interface
Oriented 3D ellipse with center at the origin of its local frame defined by the Location property. Z axis of the local frame coinsides with the normal of the plane of the ellipse. Point on the ellipse in direction of the X axis of the local frame is the starting point of parameterization as retuned via the IEllipse_DG > ICurve_DG > ParameterRange >
Min query.
A standalone ellipse can be created via IObjectGenerator_DG.Create<IEllipse_DG>() > IEllipse_DG query.
Implements also: ICurve_DG, IGeometricObject_DG, IObject_DG.
Properties
| Name |
Type |
Description |
| MajorRadius |
double |
|
| MinorRadius |
double |
|
| Center |
PointDg |
A shortcut for Location.Origin |
| Location |
IFrame_DG |
See comments above. Modifications to the IFrame_DG obtained via this property are not applied immediately. Use assignment to apply. Example:
IFrame_DG frame = myEllipse.Location; frame.Rotate(0.5*Math.PI, 0); myEllipse.Location = frame; |
Methods
- Init
- Init
- Init
- Init
- GetEccentricity
- GetFocalDistance
- GetFocus
- GetPoint
- GetTangent
- GetNormal
- Copy
- Clone
void Init(double rMajor, double rMinor)
void Init(PointDg center, VectDg normal, double rMajor, double rMinor)
normal - Normal of the plane of the ellipse.
Direction of the major axis in the plane is computed using a heuristic method.
void Init(IFrame_DG frame, double rMajor, double rMinor)
void Init(PointDg center, VectDg normal, VectDg axisX, double rMajor, double rMinor)
normal - Normal of the plane of the ellipse.
axisX - Direction of the major axis in the plane.
double GetEccentricity()
double GetFocalDistance()
PointDg GetFocus(int index0or1)
PointDg GetPoint(double angle)
VectDg GetTangent(double angle)
VectDg GetNormal()
void Copy(IEllipse_DG ellipse)
IEllipse_DG Clone()
|