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-- File: PWalking.cdl
-- Created: Fri Apr 3 10:27:42 1992
-- Author: Isabelle GRIGNON
-- <isg@topsn3>
---Copyright: Matra Datavision 1992
generic class PWalking from IntWalk (
ThePSurface as any;
ThePSurfaceTool as any) -- as PSurfaceTool from IntWalk(ThePSurface)
---Purpose: This class implements an algorithm to determine the
-- intersection between 2 parametrized surface, marching from
-- a starting point. The intersection line
-- starts and ends on the natural surface 's boundaries .
uses XY from gp,
StatusDeflection from IntWalk,
ConstIsoparametric from IntImp,
Array1OfReal from TColStd,
PntOn2S from IntSurf,
LineOn2S from IntSurf,
Dir from gp,
Dir2d from gp
raises OutOfRange from Standard,
NotDone from StdFail
class TheInt2S instantiates Int2S from IntImp
(ThePSurface, ThePSurfaceTool);
is
Create ( Caro1 ,
Caro2 : ThePSurface ;
TolTangency,
Epsilon,
Deflection,
Increment : Real from Standard)
---Purpose: Constructor used to set the data to compute intersection
-- lines between Caro1 and Caro2.
-- Deflection is the maximum deflection admitted between two
-- consecutive points on the resulting polyline.
-- TolTangency is the tolerance to find a tangent point.
-- Func is the criterion which has to be evaluated at each
-- solution point (each point of the line).
-- It is necessary to call the Perform method to compute
-- the intersection lines.
-- la ligne trouvee part d'un point sur ou dans les 2 domaines
-- naturelles des surfaces .Elle peut etre fermee ;dans les
-- cas standard si elle est ouverte elle s arrete et commence
-- a une frontiere d 'un des domaines.Si une ligne ouverte
-- s arrete en plein milieu d'un domaine ,on s'arrete sur
-- point de tangence.
-- Epsilon tolerance au carre de confusion de points
returns PWalking;
Create ( Caro1 ,
Caro2 : ThePSurface ;
TolTangency,
Epsilon,
Deflection,
Increment : Real from Standard;
U1,V1,U2,V2 :Real from Standard)
---Purpose: Returns the intersection line containing the exact
-- point Poin. This line is a polygonal line.
-- Deflection is the maximum deflection admitted between two
-- consecutive points on the resulting polyline.
-- TolTangency is the tolerance to find a tangent point.
-- Func is the criterion which has to be evaluated at each
-- solution point (each point of the line).
-- la ligne trouvee part d'un point sur ou dans les 2 domaines
-- naturelles des surfaces .Elle peut etre fermee ;dans les
-- cas standard si elle est ouverte elle s arrete et commence
-- a une frontiere d 'un des domaines.Si une ligne ouverte
-- s arrete en plein milieu d'un domaine ,on s'arrete sur
-- point de tangence.
-- Epsilon tolerance au carre de confusion de points
returns PWalking;
Perform(me :in out;ParDep : Array1OfReal from TColStd)
---Purpose: calcule la ligne d 'intersection
is static;
Perform(me :in out;ParDep : Array1OfReal from TColStd;
u1min,v1min,u2min,v2min,u1max,v1max,u2max,v2max: Real from Standard)
---Purpose: calcule la ligne d 'intersection le reglage des
-- pas est fait a partir des valeurs min max sur u et
-- v. (si ces donnees ne sont pas presentes comme
-- dans la methode precedente, les pas initiaux sont
-- calcules a partir des min max uv des faces).
is static;
PerformFirstPoint(me :in out;
ParDep : Array1OfReal from TColStd;
FirstPoint: in out PntOn2S from IntSurf)
---Purpose: calcule le premier point d'une ligne d'intersection
--
returns Boolean from Standard
is static;
IsDone(me)
---Purpose: Returns true if the calculus was successful.
returns Boolean from Standard
---C++: inline
is static;
NbPoints(me)
---Purpose: Returns the number of points of the resulting polyline.
-- An exception is raised if IsDone returns False.
returns Integer from Standard
---C++: inline
raises NotDone from StdFail
is static;
Value(me ; Index : Integer from Standard)
---Purpose: Returns the point of range Index on the polyline.
-- An exception is raised if IsDone returns False.
-- An exception is raised if Index<=0 or Index>NbPoints.
returns PntOn2S from IntSurf
---C++: inline
---C++: return const&
raises NotDone from StdFail,
OutOfRange from Standard
is static;
Line(me)
returns mutable LineOn2S from IntSurf
---C++: inline
---C++: return const&
raises NotDone from StdFail
is static;
TangentAtFirst(me)
---Purpose: Returns True if the surface are tangent at the first point
-- of the line.
-- An exception is raised if IsDone returns False.
returns Boolean from Standard
---C++: inline
raises NotDone from StdFail
is static;
TangentAtLast(me)
---Purpose: Returns true if the surface are tangent at the last point
-- of the line.
-- An exception is raised if IsDone returns False.
returns Boolean from Standard
---C++: inline
raises NotDone from StdFail
is static;
IsClosed(me)
---Purpose: Returns True if the line is closed.
-- An exception is raised if IsDone returns False.
returns Boolean from Standard
---C++: inline
raises NotDone from StdFail
is static;
TangentAtLine(me; Index: out Integer from Standard)
returns Dir from gp
---C++: return const&
---C++: inline
raises NotDone from StdFail
is static;
--private
TestDeflection(me : in out)
returns StatusDeflection from IntWalk
is static;
TestArret(me : in out; DejaReparti : Boolean from Standard;
Param : in out Array1OfReal from TColStd;
ChoixIso : out ConstIsoparametric from IntImp)
returns Boolean from Standard
is static;
RepartirOuDiviser(me : in out; DejaReparti : in out Boolean from Standard;
ChoixIso : out ConstIsoparametric from IntImp;
Arrive : in out Boolean from Standard )
is static;
AddAPoint ( me : in out ;
line : in out LineOn2S from IntSurf ;
POn2S : PntOn2S from IntSurf ) ;
---C++: inline
ExtendLineInCommonZone(me: in out; theChoixIso: ConstIsoparametric from IntImp;
theDirectionFlag: Boolean from Standard)
returns Boolean from Standard
is private;
fields
done : Boolean from Standard;
line : LineOn2S from IntSurf;
close : Boolean from Standard;
tgfirst : Boolean from Standard;
tglast : Boolean from Standard;
indextg : Integer from Standard;
tgdir : Dir from gp;
fleche : Real from Standard; -- fleche maxi autorisee
pasMax : Real from Standard; -- ratio uv maximum autorise
tolconf : Real from Standard; -- tol de confusion de 2 points
pasuv : Real from Standard[4];-- pas uv sur les caros
pasSav : Real from Standard[4];-- premier pas sauvegarde
pasInit : Real from Standard[4];-- sauvegarde des pas
Um1 : Real from Standard;
UM1 : Real from Standard;
Vm1 : Real from Standard;
VM1 : Real from Standard;
Um2 : Real from Standard;
UM2 : Real from Standard;
Vm2 : Real from Standard;
VM2 : Real from Standard;
ResoU1 : Real from Standard;
ResoU2 : Real from Standard;
ResoV1 : Real from Standard;
ResoV2 : Real from Standard;
sensCheminement : Integer from Standard;
choixIsoSav : ConstIsoparametric from IntImp;
-- sauvegarde du choix 1 iere iso
previousPoint : PntOn2S from IntSurf;
-- point d 'intersection precedent
previoustg : Boolean from Standard;
previousd : Dir from gp;
previousd1 : Dir2d from gp;
previousd2 : Dir2d from gp;
firstd1 : Dir2d from gp;
firstd2 : Dir2d from gp;
myIntersectionOn2S : TheInt2S ;
end PWalking;
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