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-- File: Curve.cdl
-- Created: Tue Jun 30 15:41:37 1992
-- Author: Laurent BUCHARD
-- <lbr@topsn3>
---Copyright: Matra Datavision 1992
class Curve from IntAna
---Purpose: Definition of a parametric Curve which is the result
-- of the intersection between two quadrics.
uses Pnt from gp,
Vec from gp,
Ax3 from gp,
Cone from gp,
Cylinder from gp,
SurfaceType from GeomAbs
raises DomainError from Standard
is
Create
---Purpose: Empty Constructor
returns Curve from IntAna;
SetCylinderQuadValues(me :in out;
Cylinder: Cylinder from gp;
Qxx,Qyy,Qzz,Qxy,Qxz,Qyz,Qx,Qy,Qz,Q1 : Real;
Tol,DomInf,DomSup : Real;
TwoZForATheta : Boolean from Standard;
ZIsPositive : Boolean from Standard)
---Purpose: Sets the parameters used to compute Points and Derivative
-- on the curve.
is static;
SetConeQuadValues(me :in out;
Cone: Cone from gp;
Qxx,Qyy,Qzz,Qxy,Qxz,Qyz,Qx,Qy,Qz,Q1 : Real;
Tol,DomInf,DomSup : Real;
TwoZForATheta : Boolean from Standard;
ZIsPositive : Boolean from Standard)
---Purpose: Sets the parameters used to compute Points and
-- Derivative on the curve.
is static;
IsOpen(me)
---Purpose: Returns TRUE if the curve is not infinite at the
-- last parameter or at the first parameter of the domain.
returns Boolean from Standard
is static;
Domain(me ; Theta1,Theta2 : out Real)
---Purpose: Returns the paramatric domain of the curve.
raises DomainError from Standard
-- The exception DomainError is raised if IsRestricted
-- returns False.
is static;
IsConstant(me)
---Purpose: Returns TRUE if the function is constant.
returns Boolean from Standard
is static;
IsFirstOpen(me)
---Purpose: Returns TRUE if the domain is open at the beginning.
returns Boolean from Standard
is static;
IsLastOpen(me)
---Purpose: Returns TRUE if the domain is open at the end.
returns Boolean from Standard
is static;
Value(me: in out ;
Theta: Real from Standard)
---Purpose: Returns the point at parameter Theta on the curve.
returns Pnt from gp
raises DomainError from Standard
-- The exception DomainError is raised if Theta is not in
-- the domain.
is static;
D1u(me: in out ; Theta: Real from Standard;
P: out Pnt from gp; V: out Vec from gp)
---Purpose: Returns the point and the first derivative at parameter
-- Theta on the curve.
returns Boolean from Standard
raises DomainError from Standard
-- The exception DomainError is raised if Theta is not in
-- the domain.
is static;
FindParameter(me; P: Pnt from gp; Para: out Real from Standard)
---Purpose: Tries to find the parameter of the point P on the curve.
-- If the method returns False, the "projection" is
-- impossible, and the value of Para is not significant.
-- If the method returns True, Para is the parameter of the
-- nearest intersection between the curve and the iso-theta
-- containing P.
returns Boolean from Standard
is static;
---------------------------------------------------------------
--
-- Implementation :
--
SetIsFirstOpen(me : in out; Flag: Boolean from Standard)
---Purpose: If flag is True, the Curve is not defined at the
-- first parameter of its domain.
--
is static;
SetIsLastOpen(me : in out; Flag: Boolean from Standard)
---Purpose: If flag is True, the Curve is not defined at the
-- first parameter of its domain.
is static;
InternalValue(me; Theta1,Theta2: Real from Standard)
---Purpose: Protected function.
returns Pnt from gp
is static protected;
InternalUVValue(me; Param: Real from Standard;
U,V,A,B,C,Co,Si,Di: out Real from Standard)
---Purpose: Protected function.
is static;
--
SetDomain(me:out;
Theta1:Real from Standard;
Theta2:Real from Standard)
raises DomainError from Standard;
--
fields
Z0Cte: Real from Standard;
Z0Sin: Real from Standard;
Z0Cos: Real from Standard;
Z0SinSin: Real from Standard;
Z0CosCos: Real from Standard;
Z0CosSin: Real from Standard;
Z1Cte: Real from Standard;
Z1Sin: Real from Standard;
Z1Cos: Real from Standard;
Z1SinSin: Real from Standard;
Z1CosCos: Real from Standard;
Z1CosSin: Real from Standard;
Z2Cte: Real from Standard;
Z2Sin: Real from Standard;
Z2Cos: Real from Standard;
Z2SinSin: Real from Standard;
Z2CosCos: Real from Standard;
Z2CosSin: Real from Standard;
TwoCurves : Boolean from Standard;
TakeZPositive : Boolean from Standard;
Tolerance : Real from Standard;
DomainInf : Real from Standard;
DomainSup : Real from Standard;
RestrictedInf : Boolean from Standard;
RestrictedSup : Boolean from Standard;
LastZ : Real from Standard;
LastDZ : Real from Standard;
firstbounded : Boolean from Standard;
lastbounded : Boolean from Standard;
typequadric : SurfaceType from GeomAbs;
RCyl : Real from Standard;
Angle : Real from Standard;
Ax3 : Ax3 from gp;
end Curve;
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