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-- File: AbscissaPoint.cdl
-- Created: Mon Jul 15 15:18:50 1991
-- Author: Isabelle GRIGNON
-- <isg@topsn3>
---Copyright: Matra Datavision 1991, 1992
class AbscissaPoint from CPnts
---Purpose: the algorithm computes a point on a curve at a given
-- distance from another point on the curve
--
-- We can instantiates with
-- Curve from Adaptor3d, Pnt from gp, Vec from gp
--
-- or
-- Curve2d from Adaptor2d, Pnt2d from gp, Vec2d from gp
uses
Curve2d from Adaptor2d,
Curve from Adaptor3d,
MyRootFunction from CPnts
raises NotDone from StdFail,
ConstructionError from Standard
is
Length(myclass; C : Curve from Adaptor3d) returns Real;
---Purpose: Computes the length of the Curve <C>.
Length(myclass; C : Curve2d from Adaptor2d) returns Real;
---Purpose: Computes the length of the Curve <C>.
Length(myclass; C : Curve from Adaptor3d; Tol : Real) returns Real;
---Purpose: Computes the length of the Curve <C> with the given tolerance.
Length(myclass; C : Curve2d from Adaptor2d; Tol : Real) returns Real;
---Purpose: Computes the length of the Curve <C> with the given tolerance.
Length(myclass; C : Curve from Adaptor3d; U1, U2 : Real) returns Real;
---Purpose: Computes the length of the Curve <C> between <U1> and <U2>.
Length(myclass; C : Curve2d from Adaptor2d; U1, U2 : Real) returns Real;
---Purpose: Computes the length of the Curve <C> between <U1> and <U2>.
Length(myclass; C : Curve from Adaptor3d; U1, U2, Tol : Real) returns Real;
---Purpose: Computes the length of the Curve <C> between <U1> and <U2> with the given tolerance.
Length(myclass; C : Curve2d from Adaptor2d; U1, U2, Tol : Real) returns Real;
---Purpose: Computes the length of the Curve <C> between <U1> and <U2> with the given tolerance.
Create
---Purpose: creation of a indefinite AbscissaPoint.
returns AbscissaPoint;
Create (C : Curve from Adaptor3d; Abscissa, U0, Resolution : Real)
---Purpose: the algorithm computes a point on a curve <Curve> at the
-- distance <Abscissa> from the point of parameter <U0>.
-- <Resolution> is the error allowed in the computation.
-- The computed point can be outside of the curve 's bounds.
returns AbscissaPoint
raises ConstructionError;
-- raised when it is not possible to compute the curve's length or if
-- the curve is null;
Create (C : Curve2d from Adaptor2d; Abscissa, U0, Resolution : Real)
---Purpose: the algorithm computes a point on a curve <Curve> at the
-- distance <Abscissa> from the point of parameter <U0>.
-- <Resolution> is the error allowed in the computation.
-- The computed point can be outside of the curve 's bounds.
returns AbscissaPoint
raises ConstructionError;
-- raised when it is not possible to compute the curve's length or if
-- the curve is null;
Create (C : Curve from Adaptor3d; Abscissa, U0, Ui, Resolution : Real)
---Purpose: the algorithm computes a point on a curve <Curve> at the
-- distance <Abscissa> from the point of parameter <U0>.
-- <Ui> is the starting value used in the iterative process
-- which find the solution, it must be closed to the final
-- solution
-- <Resolution> is the error allowed in the computation.
-- The computed point can be outside of the curve 's bounds.
returns AbscissaPoint
raises ConstructionError;
-- raised when it is not possible to compute the curve's length or if
-- the curve is null;
Create (C : Curve2d from Adaptor2d; Abscissa, U0, Ui, Resolution : Real)
---Purpose: the algorithm computes a point on a curve <Curve> at the
-- distance <Abscissa> from the point of parameter <U0>.
-- <Ui> is the starting value used in the iterative process
-- which find the solution, it must be closed to the final
-- solution
-- <Resolution> is the error allowed in the computation.
-- The computed point can be outside of the curve 's bounds.
returns AbscissaPoint
raises ConstructionError;
-- raised when it is not possible to compute the curve's length or if
-- the curve is null;
Init(me: in out; C: Curve from Adaptor3d)
---Purpose: Initializes the resolution function with <C>.
is static;
Init(me: in out; C: Curve2d from Adaptor2d)
---Purpose: Initializes the resolution function with <C>.
is static;
-- these two methods are introduced by rbv to control the tolerance
Init(me: in out; C: Curve from Adaptor3d; Tol : Real)
---Purpose: Initializes the resolution function with <C>.
is static;
Init(me: in out; C: Curve2d from Adaptor2d; Tol : Real)
---Purpose: Initializes the resolution function with <C>.
is static;
--
Init(me: in out; C: Curve from Adaptor3d; U1, U2: Real)
---Purpose: Initializes the resolution function with <C>
-- between U1 and U2.
is static;
Init(me: in out; C: Curve2d from Adaptor2d; U1, U2: Real)
---Purpose: Initializes the resolution function with <C>
-- between U1 and U2.
is static;
-- these two methods are introduced by rbv to control the tolerance
Init(me: in out; C: Curve from Adaptor3d; U1, U2, Tol: Real)
---Purpose: Initializes the resolution function with <C>
-- between U1 and U2.
is static;
Init(me: in out; C: Curve2d from Adaptor2d; U1, U2, Tol: Real)
---Purpose: Initializes the resolution function with <C>
-- between U1 and U2.
is static;
Perform(me: in out; Abscissa, U0, Resolution : Real)
---Purpose: Computes the point at the distance <Abscissa> of
-- the curve.
is static;
Perform(me: in out; Abscissa, U0, Ui, Resolution : Real)
---Purpose: Computes the point at the distance <Abscissa> of
-- the curve.
is static;
AdvPerform(me: in out; Abscissa, U0, Ui, Resolution : Real)
---Purpose: Computes the point at the distance <Abscissa> of
-- the curve; performs more appropriate tolerance managment;
-- to use this method in right way it is necessary to call
-- empty consructor. then call method Init with
-- Tolerance = Resolution, then call AdvPermorm.
is static;
IsDone(me)
---Purpose: True if the computation was successful, False otherwise.
---C++: inline
returns Boolean
is static;
Parameter(me) returns Real
---Purpose: Returns the parameter of the solution.
--
---C++: inline
raises NotDone from StdFail;
-- if the computation was not done.
SetParameter(me : in out; P : Real);
---Purpose: Enforce the solution, used by GCPnts.
--
---C++: inline
fields
myDone : Boolean;
myL : Real;
myParam : Real;
myUMin : Real;
myUMax : Real from Standard;
myF : MyRootFunction from CPnts;
end AbscissaPoint;
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