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-- File: MakeElips.cdl
-- Created: Wed Aug 26 14:31:40 1992
-- Author: Remi GILET
-- <reg@topsn3>
---Copyright: Matra Datavision 1992
class MakeElips from gce inherits Root from gce
---Purpose :This class implements the following algorithms used to
-- create an ellipse from gp.
--
-- * Create an ellipse from its center, and two points:
-- one on the ciconference giving the major radius, the
-- other giving the value of the small radius.
uses Pnt from gp,
Ax2 from gp,
Elips from gp
raises NotDone from StdFail
is
Create (A2 : Ax2 from gp;
MajorRadius, MinorRadius : Real from Standard)
returns MakeElips;
--- Purpose :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 A2 and the "YAxis" is
-- defined with the "YDirection" of A2.
-- Warnings :
-- It is not forbidden to create an ellipse with
-- MajorRadius = MinorRadius.
Create(S1,S2 : Pnt from gp;
Center : Pnt from gp) returns MakeElips;
---Purpose: Make an ellipse with its center and two points.
-- Warning
-- The MakeElips class does not prevent the
-- construction of an ellipse where the MajorRadius is
-- equal to the MinorRadius.
-- If an error occurs (that is, when IsDone returns
-- false), the Status function returns:
-- - gce_InvertRadius if MajorRadius is less than MinorRadius;
-- - gce_NegativeRadius if MinorRadius is less than 0.0;
-- - gce_NullAxis if the points S1 and Center are coincident; or
-- - gce_InvertAxis if:
-- - the major radius computed with Center and S1
-- is less than the minor radius computed with Center, S1 and S2, or
-- - Center, S1 and S2 are collinear.
Value(me) returns Elips from gp
raises NotDone
is static;
---C++: return const&
---Purpose: Returns the constructed ellipse.
-- Exceptions StdFail_NotDone if no ellipse is constructed.
Operator(me) returns Elips from gp
is static;
---C++: return const&
---C++: alias "Standard_EXPORT operator gp_Elips() const;"
fields
TheElips : Elips from gp;
--The solution from gp.
end MakeElips;
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