1 // Created on: 1996-04-03
2 // Created by: Stagiaire Frederic CALOONE
3 // Copyright (c) 1996-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _GeomPlate_BuildPlateSurface_HeaderFile
18 #define _GeomPlate_BuildPlateSurface_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <GeomPlate_HSequenceOfCurveConstraint.hxx>
25 #include <GeomPlate_HArray1OfSequenceOfReal.hxx>
26 #include <GeomPlate_HSequenceOfPointConstraint.hxx>
27 #include <Plate_Plate.hxx>
28 #include <Standard_Boolean.hxx>
29 #include <TColStd_HArray1OfInteger.hxx>
30 #include <Standard_Integer.hxx>
31 #include <Standard_Real.hxx>
32 #include <Extrema_ExtPS.hxx>
33 #include <GeomPlate_HArray1OfHCurve.hxx>
34 #include <TColgp_SequenceOfXY.hxx>
35 #include <TColgp_SequenceOfXYZ.hxx>
36 #include <TColGeom2d_HArray1OfCurve.hxx>
37 #include <TColStd_HArray1OfReal.hxx>
39 class GeomPlate_Surface;
40 class Standard_ConstructionError;
41 class Standard_RangeError;
42 class GeomPlate_CurveConstraint;
43 class GeomPlate_PointConstraint;
49 //! This class provides an algorithm for constructing such a plate surface that
50 //! it conforms to given curve and/or point constraints.
51 //! The algorithm accepts or constructs an initial surface
52 //! and looks for a deformation of it satisfying the
53 //! constraints and minimizing energy input.
54 //! A BuildPlateSurface object provides a framework for:
55 //! - defining or setting constraints
56 //! - implementing the construction algorithm
57 //! - consulting the result.
58 class GeomPlate_BuildPlateSurface
65 //! Constructor compatible with the old version
66 //! with this constructor the constraint are given in a Array of Curve on Surface
67 //! The array NbPoints contains the number of points for each constraint.
68 //! The Array Tang contains the order of constraint for each Constraint: The possible values for this
69 //! order has to be -1 , 0 , 1 , 2 . Order i means constraint Gi.
70 //! NbIter is the maximum number of iteration to optimise the number of points for resolution
71 //! Degree is the degree of resolution for Plate
72 //! Tol2d is the tolerance used to test if two points of different constraint are identical in the
73 //! parametric space of the initial surface
74 //! Tol3d is used to test if two identical points in the 2d space are identical in 3d space
75 //! TolAng is used to compare the angle between normal of two identical points in the 2d space
76 //! Raises ConstructionError;
77 Standard_EXPORT GeomPlate_BuildPlateSurface(const Handle(TColStd_HArray1OfInteger)& NPoints, const Handle(GeomPlate_HArray1OfHCurve)& TabCurve, const Handle(TColStd_HArray1OfInteger)& Tang, const Standard_Integer Degree, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False);
79 Standard_EXPORT GeomPlate_BuildPlateSurface(const Handle(Geom_Surface)& Surf, const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 10, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False);
81 //! Initializes the BuildPlateSurface framework for
82 //! deforming plate surfaces using curve and point
83 //! constraints. You use the first constructor if you have
84 //! an initial surface to work with at construction time. If
85 //! not, you use the second. You can add one later by
86 //! using the method LoadInitSurface. If no initial
87 //! surface is loaded, one will automatically be computed.
88 //! The curve and point constraints will be defined by
89 //! using the method Add.
90 //! Before the call to the algorithm, the curve constraints
91 //! will be transformed into sequences of discrete points.
92 //! Each curve defined as a constraint will be given the
93 //! value of NbPtsOnCur as the average number of points on it.
94 //! Several arguments serve to improve performance of
95 //! the algorithm. NbIter, for example, expresses the
96 //! number of iterations allowed and is used to control the
97 //! duration of computation. To optimize resolution,
98 //! Degree will have the default value of 3.
99 //! The surface generated must respect several tolerance values:
100 //! - 2d tolerance given by Tol2d, with a default value of 0.00001
101 //! - 3d tolerance expressed by Tol3d, with a default value of 0.0001
102 //! - angular tolerance given by TolAng, with a default
103 //! value of 0.01, defining the greatest angle allowed
104 //! between the constraint and the target surface.
106 //! Standard_ConstructionError if NbIter is less than 1 or Degree is less than 3.
107 Standard_EXPORT GeomPlate_BuildPlateSurface(const Standard_Integer Degree = 3, const Standard_Integer NbPtsOnCur = 10, const Standard_Integer NbIter = 3, const Standard_Real Tol2d = 0.00001, const Standard_Real Tol3d = 0.0001, const Standard_Real TolAng = 0.01, const Standard_Real TolCurv = 0.1, const Standard_Boolean Anisotropie = Standard_False);
109 //! Resets all constraints
110 Standard_EXPORT void Init();
112 //! Loads the initial Surface
113 Standard_EXPORT void LoadInitSurface (const Handle(Geom_Surface)& Surf);
115 //! Adds the linear constraint cont.
116 Standard_EXPORT void Add (const Handle(GeomPlate_CurveConstraint)& Cont);
118 Standard_EXPORT void SetNbBounds (const Standard_Integer NbBounds);
120 //! Adds the point constraint cont.
121 Standard_EXPORT void Add (const Handle(GeomPlate_PointConstraint)& Cont);
124 //! Calls the algorithm and computes the plate surface using
125 //! the loaded constraints. If no initial surface is given, the
126 //! algorithm automatically computes one.
128 //! Standard_RangeError if the value of the constraint is
129 //! null or if plate is not done.
130 Standard_EXPORT void Perform(const Message_ProgressRange& theProgress = Message_ProgressRange());
132 //! returns the CurveConstraints of order order
133 Standard_EXPORT Handle(GeomPlate_CurveConstraint) CurveConstraint (const Standard_Integer order) const;
135 //! returns the PointConstraint of order order
136 Standard_EXPORT Handle(GeomPlate_PointConstraint) PointConstraint (const Standard_Integer order) const;
138 Standard_EXPORT void Disc2dContour (const Standard_Integer nbp, TColgp_SequenceOfXY& Seq2d);
140 Standard_EXPORT void Disc3dContour (const Standard_Integer nbp, const Standard_Integer iordre, TColgp_SequenceOfXYZ& Seq3d);
143 //! Tests whether computation of the plate has been completed.
144 Standard_EXPORT Standard_Boolean IsDone() const;
147 //! Returns the result of the computation. This surface can
148 //! then be used by GeomPlate_MakeApprox for
149 //! converting the resulting surface into a BSpline.
150 Standard_EXPORT Handle(GeomPlate_Surface) Surface() const;
152 //! Returns the initial surface
153 Standard_EXPORT Handle(Geom_Surface) SurfInit() const;
156 //! Allows you to ensure that the array of curves returned by
157 //! Curves2d has the correct orientation. Returns the
158 //! orientation of the curves in the the array returned by
159 //! Curves2d. Computation changes the orientation of
160 //! these curves. Consequently, this method returns the
161 //! orientation prior to computation.
162 Standard_EXPORT Handle(TColStd_HArray1OfInteger) Sense() const;
165 //! Extracts the array of curves on the plate surface which
166 //! correspond to the curve constraints set in Add.
167 Standard_EXPORT Handle(TColGeom2d_HArray1OfCurve) Curves2d() const;
170 //! Returns the order of the curves in the array returned by
171 //! Curves2d. Computation changes this order.
172 //! Consequently, this method returns the order of the
173 //! curves prior to computation.
174 Standard_EXPORT Handle(TColStd_HArray1OfInteger) Order() const;
176 //! Returns the max distance betwen the result and the constraints
177 Standard_EXPORT Standard_Real G0Error() const;
179 //! Returns the max angle betwen the result and the constraints
180 Standard_EXPORT Standard_Real G1Error() const;
182 //! Returns the max difference of curvature betwen the result and the constraints
183 Standard_EXPORT Standard_Real G2Error() const;
185 //! Returns the max distance between the result and the constraint Index
186 Standard_EXPORT Standard_Real G0Error (const Standard_Integer Index);
188 //! Returns the max angle between the result and the constraint Index
189 Standard_EXPORT Standard_Real G1Error (const Standard_Integer Index);
191 //! Returns the max difference of curvature between the result and the constraint Index
192 Standard_EXPORT Standard_Real G2Error (const Standard_Integer Index);
206 //! Evaluates the distance, the angle between normals, and the "courbure"
207 //! on middle points of contraints an corresponding points on the GeomPlate_Surface
208 //! the results are given for a curve c
209 Standard_EXPORT void EcartContraintesMil (const Standard_Integer c, Handle(TColStd_HArray1OfReal)& d, Handle(TColStd_HArray1OfReal)& an, Handle(TColStd_HArray1OfReal)& courb);
211 Standard_EXPORT gp_Pnt2d ProjectPoint (const gp_Pnt& P);
213 Standard_EXPORT Handle(Geom2d_Curve) ProjectCurve (const Handle(Adaptor3d_Curve)& Curv);
215 Standard_EXPORT Handle(Adaptor2d_Curve2d) ProjectedCurve (Handle(Adaptor3d_Curve)& Curv);
217 Standard_EXPORT void ComputeSurfInit(const Message_ProgressRange& theProgress);
219 Standard_EXPORT void Intersect (Handle(GeomPlate_HArray1OfSequenceOfReal)& PntInter, Handle(GeomPlate_HArray1OfSequenceOfReal)& PntG1G1);
221 Standard_EXPORT void Discretise (const Handle(GeomPlate_HArray1OfSequenceOfReal)& PntInter, const Handle(GeomPlate_HArray1OfSequenceOfReal)& PntG1G1);
223 Standard_EXPORT void LoadCurve (const Standard_Integer NbBoucle, const Standard_Integer OrderMax = 2);
225 Standard_EXPORT void LoadPoint (const Standard_Integer NbBoucle, const Standard_Integer OrderMax = 2);
227 Standard_EXPORT void CalculNbPtsInit();
229 Standard_EXPORT Standard_Boolean VerifSurface (const Standard_Integer NbLoop);
231 Standard_EXPORT void VerifPoints (Standard_Real& dist, Standard_Real& ang, Standard_Real& curv) const;
233 Standard_EXPORT Standard_Boolean CourbeJointive (const Standard_Real tolerance);
235 Standard_EXPORT Standard_Real ComputeAnisotropie() const;
237 Standard_EXPORT Standard_Boolean IsOrderG1() const;
240 Handle(GeomPlate_HSequenceOfCurveConstraint) myLinCont;
241 Handle(GeomPlate_HArray1OfSequenceOfReal) myParCont;
242 Handle(GeomPlate_HArray1OfSequenceOfReal) myPlateCont;
243 Handle(GeomPlate_HSequenceOfPointConstraint) myPntCont;
244 Handle(Geom_Surface) mySurfInit;
245 Handle(Geom_Surface) myPlanarSurfInit;
246 Handle(GeomPlate_Surface) myGeomPlateSurface;
248 Plate_Plate myPrevPlate;
249 Standard_Boolean myAnisotropie;
250 Handle(TColStd_HArray1OfInteger) mySense;
251 Standard_Integer myDegree;
252 Handle(TColStd_HArray1OfInteger) myInitOrder;
253 Standard_Real myG0Error;
254 Standard_Real myG1Error;
255 Standard_Real myG2Error;
256 Standard_Integer myNbPtsOnCur;
257 Standard_Boolean mySurfInitIsGive;
258 Standard_Integer myNbIter;
259 Extrema_ExtPS myProj;
260 Standard_Real myTol2d;
261 Standard_Real myTol3d;
262 Standard_Real myTolAng;
263 Standard_Real myTolU;
264 Standard_Real myTolV;
265 Standard_Integer myNbBounds;
266 Standard_Boolean myIsLinear;
267 Standard_Boolean myFree;
278 #endif // _GeomPlate_BuildPlateSurface_HeaderFile