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-- File: GCPnts_TangentialDeflection.cdl
-- Created: Fri Nov 8 10:54:06 1996
-- Author: Jean Claude VAUTHIER
-- <jcv@brunox.paris1.matra-dtv.fr>
---Copyright: Matra Datavision 1996
class TangentialDeflection from GCPnts
---Purpose: Computes a set of points on a curve from package
-- Adaptor3d such as between two successive points
-- P1(u1)and P2(u2) :
--
-- . ||P1P3^P3P2||/||P1P3||*||P3P2||<AngularDeflection
-- . ||P1P2^P1P3||/||P1P2||*||P1P3||<CurvatureDeflection
--
-- where P3 is the point of abscissa ((u1+u2)/2), with
-- u1 the abscissa of the point P1 and u2 the abscissa
-- of the point P2.
--
-- ^ is the cross product of two vectors, and ||P1P2||
-- the magnitude of the vector P1P2.
--
-- The conditions AngularDeflection > gp::Resolution()
-- and CurvatureDeflection > gp::Resolution() must be
-- satisfied at the construction time.
--
-- A minimum number of points can be fixed for a
-- linear or circular element.
-- Example:
-- Handle(Geom_BezierCurve) C = new Geom_BezierCurve (Poles);
-- GeomAdaptor_Curve Curve (C);
-- Real CDeflect = 0.01; //Curvature deflection
-- Real ADeflect = 0.09; //Angular deflection
--
-- GCPnts_TangentialDeflection PointsOnCurve;
-- PointsOnCurve.Initialize (Curve, ADeflect, CDeflect);
--
-- Real U;
-- gp_Pnt P;
-- for (Integer i=1; i<=PointsOnCurve.NbPoints();i++) {
-- U = PointsOnCurve.Parameter (i);
-- P = PointsOnCurve.Value (i);
-- }
--
uses
SequenceOfPnt from TColgp,
SequenceOfReal from TColStd,
Curve from Adaptor3d,
Curve2d from Adaptor2d,
Pnt from gp
raises
ConstructionError from Standard,
OutOfRange from Standard
is
Create returns TangentialDeflection;
Create (C : Curve;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
returns TangentialDeflection raises ConstructionError;
Create (C : Curve;
FirstParameter : Real;
LastParameter : Real;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
returns TangentialDeflection raises ConstructionError;
Create (C : Curve2d;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
returns TangentialDeflection raises ConstructionError;
Create (C : Curve2d;
FirstParameter : Real;
LastParameter : Real;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
returns TangentialDeflection raises ConstructionError;
Initialize (me : in out;
C : Curve;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
raises ConstructionError is static;
Initialize (me : in out;
C : Curve;
FirstParameter : Real;
LastParameter : Real;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
raises ConstructionError is static;
Initialize (me : in out;
C : Curve2d;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
raises ConstructionError is static;
Initialize (me : in out;
C : Curve2d;
FirstParameter : Real;
LastParameter : Real;
AngularDeflection : Real; --- Deffault value 0.2;
CurvatureDeflection : Real; --- Deffault value 0.05;
MinimumOfPoints : Integer = 2;
UTol : Real = 1.0e-9)
raises ConstructionError is static;
AddPoint(me: in out; thePnt : in Pnt from gp;
theParam : in Real;
theIsReplace : in Boolean = Standard_True)
returns Integer from Standard;
---Purpose: Add point to already calculated points (or replace existing)
-- Returns index of new added point
-- or founded with parametric tolerance (replaced if theIsReplace is true)
NbPoints (me) returns Integer is static;
---C++: inline
Parameter (me; I : Integer)
---C++: inline
returns Real raises OutOfRange is static;
Value (me; I : Integer)
---C++: inline
returns Pnt raises OutOfRange is static;
PerformLinear (me : in out; C : Curve) is static private;
PerformLinear (me : in out; C : Curve2d) is static private;
PerformCircular (me : in out; C : Curve) is static private;
PerformCircular (me : in out; C : Curve2d) is static private;
PerformCurve (me : in out; C : Curve) is static private;
PerformCurve (me : in out; C : Curve2d) is static private;
EvaluateDu (me;
C : in Curve;
U : in Real;
P : in out Pnt;
Du : in out Real;
NotDone : in out Boolean)
is static private;
EvaluateDu (me;
C : in Curve2d;
U : in Real;
P : in out Pnt;
Du : in out Real;
NotDone : in out Boolean)
is static private;
fields
angularDeflection : Real;
curvatureDeflection : Real;
uTol : Real;
minNbPnts : Integer;
lastu : Real;
firstu : Real;
points : SequenceOfPnt;
parameters : SequenceOfReal;
end TangentialDeflection;
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