/// <summary> /// Add an ellipse of center (`x', `y', `z') and radii `r1' and `r2' along the /// x- and y-axes respectively. If `tag' is positive, set the tag explicitly; /// otherwise a new tag is selected automatically. If `angle1' and `angle2' /// are specified, create an ellipse arc between the two angles. Return the /// tag of the ellipse. Note that OpenCASCADE does not allow creating ellipses /// with the major radius (along the x-axis) smaller than or equal to the /// minor radius (along the y-axis): rotate the shape or use `addCircle' in /// such cases. /// </summary> public int AddEllipse(double x, double y, double z, double r1, double r2, double angle1 = 0, double angle2 = 2 *Math.PI, int tag = -1) { var api = GMshNativeMethods.gmshModelOccAddEllipse(x, y, z, r1, r2, tag, angle1, angle2, ref ierr); if (ierr != 0) { throw new GMshException(ierr); } return(api); }