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1 | // Created on: 1994-09-01 |
| 2 | // Created by: Christian CAILLET |
| 3 | // Copyright (c) 1994-1999 Matra Datavision |
| 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
| 5 | // |
| 6 | // This file is part of Open CASCADE Technology software library. |
| 7 | // |
| 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. |
| 13 | // |
| 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
| 16 | |
| 17 | #ifndef _IGESConvGeom_HeaderFile |
| 18 | #define _IGESConvGeom_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Integer.hxx> |
| 25 | #include <Standard_Real.hxx> |
| 26 | class IGESGeom_SplineCurve; |
| 27 | class Geom_BSplineCurve; |
| 28 | class Geom2d_BSplineCurve; |
| 29 | class IGESGeom_SplineSurface; |
| 30 | class Geom_BSplineSurface; |
| 31 | class IGESConvGeom_GeomBuilder; |
| 32 | |
| 33 | |
| 34 | //! This package is intended to gather geometric conversion which |
| 35 | //! are not immediate but can be used for several purposes : |
| 36 | //! mainly, standard conversion to and from CasCade geometric and |
| 37 | //! topologic data, and adaptations of IGES files as required |
| 38 | //! (as replacing Spline entities to BSpline equivalents). |
| 39 | class IGESConvGeom |
| 40 | { |
| 41 | public: |
| 42 | |
| 43 | DEFINE_STANDARD_ALLOC |
| 44 | |
| 45 | |
| 46 | //! basic tool to build curves from IGESGeom (arrays of points, |
| 47 | //! Transformations, evaluation of points in a datum) |
| 48 | //! Converts a SplineCurve from IGES to a BSplineCurve from CasCade |
| 49 | //! <epscoef> gives tolerance to consider coefficient to be nul |
| 50 | //! <epsgeom> gives tolerance to consider poles to be equal |
| 51 | //! The returned value is a status with these possible values : |
| 52 | //! - 0 OK, done |
| 53 | //! - 1 the result is not guaranteed to be C0 (with <epsgeom>) |
| 54 | //! - 2 SplineType not processed (allowed : max 3) |
| 55 | //! (no result produced) |
| 56 | //! - 3 error during creation of control points |
| 57 | //! (no result produced) |
| 58 | //! - 4 polynomial equation is not correct (no result produced) |
| 59 | //! - 5 less than one segment (no result produced) |
| 60 | Standard_EXPORT static Standard_Integer SplineCurveFromIGES (const Handle(IGESGeom_SplineCurve)& igesent, const Standard_Real epscoef, const Standard_Real epsgeom, Handle(Geom_BSplineCurve)& result); |
| 61 | |
| 62 | //! Tries to increase curve continuity with tolerance <epsgeom> |
| 63 | //! <continuity> is the new desired continuity, can be 1 or 2 |
| 64 | //! (more than 2 is considered as 2). |
| 65 | //! Returns the new maximum continuity obtained on all knots. |
| 66 | //! Remark that, for instance with <continuity> = 2, even if not |
| 67 | //! all the knots can be passed to C2, all knots which can be are. |
| 68 | Standard_EXPORT static Standard_Integer IncreaseCurveContinuity (const Handle(Geom_BSplineCurve)& curve, const Standard_Real epsgeom, const Standard_Integer continuity = 2); |
| 69 | |
| 70 | Standard_EXPORT static Standard_Integer IncreaseCurveContinuity (const Handle(Geom2d_BSplineCurve)& curve, const Standard_Real epsgeom, const Standard_Integer continuity = 2); |
| 71 | |
| 72 | //! Converts a SplineSurface from IGES to a BSplineSurface from CasCade |
| 73 | //! <epscoef> gives tolerance to consider coefficient to be nul |
| 74 | //! <epsgeom> gives tolerance to consider poles to be equal |
| 75 | //! The returned value is a status with these possible values : |
| 76 | //! - 0 OK, done |
| 77 | //! - 1 the result is not guaranteed to be C0 (with <epsgeom>) |
| 78 | //! - 2 degree is not compatible with code boundary type |
| 79 | //! (warning) but C0 is OK |
| 80 | //! - 3 idem but C0 is not guaranteed (warning) |
| 81 | //! - 4 degree has been determined to be nul, either in U or V |
| 82 | //! (no result produced) |
| 83 | //! - 5 less than one segment in U or V (no result produced) |
| 84 | Standard_EXPORT static Standard_Integer SplineSurfaceFromIGES (const Handle(IGESGeom_SplineSurface)& igesent, const Standard_Real epscoef, const Standard_Real epsgeom, Handle(Geom_BSplineSurface)& result); |
| 85 | |
| 86 | //! Tries to increase Surface continuity with tolerance <epsgeom> |
| 87 | //! <continuity> is the new desired continuity, can be 1 or 2 |
| 88 | //! (more than 2 is considered as 2). |
| 89 | //! Returns the new maximum continuity obtained on all knots. |
| 90 | //! Remark that, for instance with <continuity> = 2, even if not |
| 91 | //! all the knots can be passed to C2, all knots which can be are. |
| 92 | Standard_EXPORT static Standard_Integer IncreaseSurfaceContinuity (const Handle(Geom_BSplineSurface)& surface, const Standard_Real epsgeom, const Standard_Integer continuity = 2); |
| 93 | |
| 94 | |
| 95 | |
| 96 | |
| 97 | protected: |
| 98 | |
| 99 | |
| 100 | |
| 101 | |
| 102 | |
| 103 | private: |
| 104 | |
| 105 | |
| 106 | |
| 107 | |
| 108 | friend class IGESConvGeom_GeomBuilder; |
| 109 | |
| 110 | }; |
| 111 | |
| 112 | |
| 113 | |
| 114 | |
| 115 | |
| 116 | |
| 117 | |
| 118 | #endif // _IGESConvGeom_HeaderFile |
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