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-- File: AdvApp2Var.cdl
-- Created: Tue Mar 5 14:52:05 1996
-- Author: Joelle CHAUVET
-- <jct@sgi38>
-- Modified: Wed Jan 15 09:45:42 1997
-- by: Joelle CHAUVET
-- G1135 : Approximation with criterion
-- class Criterion and enumeration CriterionType
-- G1134 : Approximation with regular cuttings
-- enumeration CriterionRepartition
---Copyright: Matra Datavision 1996
package AdvApp2Var
---Purpose: This package provides algorithms to approximate a
-- function of 2 variables that can be multidimensional;
-- the result is a BSpline function with the required continuity
-- Warning: only one 3D BSpline for the moment
--
uses
gp,
Geom,
GeomAbs,
TColStd,
TColgp,
TColGeom,
TCollection,
AdvApprox,
Standard
is
enumeration CriterionType is
---Purpose: influency of the criterion on cutting process
Absolute,
---Purpose: cutting when criterion is not satisfied
-- desactivation of the compute of the error max
Relative
---Purpose: cutting when error max is not good or if error
-- max is good and criterion is not satisfied
end CriterionType;
enumeration CriterionRepartition is
---Purpose: way of cutting process
Regular,
---Purpose: all new cutting points at each step of cutting
-- process : (a+i(b-a)/N)i at step N,
-- (a+i(b-a)/(N+1))i at step N+1,...
-- where (a,b) is the global interval
Incremental
---Purpose: add one new cutting point at each step
-- of cutting process
end CriterionRepartition;
--
--
-- public classes
--
--
class ApproxAFunc2Var from AdvApp2Var ;
---Purpose:
-- this class approximates a given function of 2 variables
imported EvaluatorFunc2Var ;
---Purpose:
-- typedef void (*EvaluatorFunc2Var) (
-- Standard_Integer * -- dimension
-- Standard_Real * -- first and last parameters in U
-- Standard_Real * -- first and last parameters in V
-- Standard_Integer * -- choice of constante, 1 for U, 2 for V
-- Standard_Real * -- value of constant parameter
-- Standard_Integer * -- number of parameters
-- Standard_Real * -- values of parameters
-- Standard_Integer * -- order of derivation in U
-- Standard_Integer * -- order of derivation in V
-- Standard_Real * -- evaluation
-- Standard_Integer * -- error code
-- ) ;
deferred class Criterion from AdvApp2Var ;
---Purpose:
-- this class contains a given criterion to be satisfied
--
--
-- private classes for Data
--
--
-- Basic Data
class Context from AdvApp2Var;
---Purpose :
-- contains all the parameters for approximation
-- ( tolerancy, computing option, ...)
--
class Node from AdvApp2Var;
---Purpose :
-- used to store constraints on a (Ui,Vj) point
--
class Iso from AdvApp2Var;
---Purpose :
-- used to store constraints on a line U = Ui or V = Vj
--
class Patch from AdvApp2Var;
---Purpose :
-- used to store results on a domain [Ui,Ui+1]x[Vj,Vj+1]
--
class Strip from AdvApp2Var instantiates
Sequence from TCollection (Iso from AdvApp2Var);
---Purpose :
-- set of constraints along a same type of Iso on the same level
--
--
-- Structured Data
class SequenceOfNode from AdvApp2Var instantiates
Sequence from TCollection (Node from AdvApp2Var);
class SequenceOfPatch from AdvApp2Var instantiates
Sequence from TCollection (Patch from AdvApp2Var);
class SequenceOfStrip from AdvApp2Var instantiates
Sequence from TCollection (Strip from AdvApp2Var);
--
--
-- Final Data
class Network from AdvApp2Var;
-- contains all the result patches and the associated parameters U and V
--
class Framework from AdvApp2Var;
-- contains all the constraints (Nodes and Isos)
--
end AdvApp2Var;
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