1 // Created on: 1994-01-10
2 // Created by: Yves FRICAUD
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 _Bisector_BisecCC_HeaderFile
18 #define _Bisector_BisecCC_HeaderFile
19 
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
22 
23 #include <Standard_Real.hxx>
24 #include <TColStd_SequenceOfReal.hxx>
25 #include <Standard_Integer.hxx>
26 #include <Bisector_PolyBis.hxx>
27 #include <Standard_Boolean.hxx>
28 #include <gp_Pnt2d.hxx>
29 #include <Bisector_Curve.hxx>
30 #include <GeomAbs_Shape.hxx>
31 class Geom2d_Curve;
32 class Geom2d_Geometry;
33 class gp_Trsf2d;
34 class gp_Vec2d;
35 
36 
37 class Bisector_BisecCC;
38 DEFINE_STANDARD_HANDLE(Bisector_BisecCC, Bisector_Curve)
39 
40 //! Construct the bisector between two curves.
41 //! The curves can intersect only in their extremities.
42 class Bisector_BisecCC : public Bisector_Curve
43 {
44 
45 public:
46 
47 
48   Standard_EXPORT Bisector_BisecCC();
49 
50   //! Constructs  the bisector  between the  curves <Cu1>
51   //! and <Cu2>.
52   //!
53   //! <Side1>  (resp <Side2>) = 1   if the
54   //! bisector curve is on the left of <Cu1> (resp <Cu2>)
55   //! else <Side1> (resp <Side2>) = -1.
56   //!
57   //! the Bisector is trimmed by the Point <Origin>.
58   //! <DistMax> is used to trim the bisector.The distance
59   //! between the points of the bisector and <Cu> is smaller
60   //! than <DistMax>.
61   Standard_EXPORT Bisector_BisecCC(const Handle(Geom2d_Curve)& Cu1, const Handle(Geom2d_Curve)& Cu2, const Standard_Real Side1, const Standard_Real Side2, const gp_Pnt2d& Origin, const Standard_Real DistMax = 500);
62 
63   //! Computes the bisector  between the  curves <Cu1>
64   //! and <Cu2>.
65   //!
66   //! <Side1>  (resp <Side2>) = 1   if the
67   //! bisector curve is on the left of <Cu1> (resp <Cu2>)
68   //! else <Side1> (resp <Side2>) = -1.
69   //!
70   //! the Bisector is trimmed by the Point <Origin>.
71   //!
72   //! <DistMax> is used to trim the bisector.The distance
73   //! between the points of the bisector and <Cu> is smaller
74   //! than <DistMax>.
75   Standard_EXPORT void Perform (const Handle(Geom2d_Curve)& Cu1, const Handle(Geom2d_Curve)& Cu2, const Standard_Real Side1, const Standard_Real Side2, const gp_Pnt2d& Origin, const Standard_Real DistMax = 500);
76 
77   Standard_EXPORT Standard_Boolean IsExtendAtStart() const Standard_OVERRIDE;
78 
79   Standard_EXPORT Standard_Boolean IsExtendAtEnd() const Standard_OVERRIDE;
80 
81   Standard_EXPORT void Reverse() Standard_OVERRIDE;
82 
83   Standard_EXPORT Standard_Real ReversedParameter (const Standard_Real U) const Standard_OVERRIDE;
84 
85   //! Returns the order of continuity of the curve.
86   //! Raised if N < 0.
87   Standard_EXPORT Standard_Boolean IsCN (const Standard_Integer N) const Standard_OVERRIDE;
88 
89   //! The parameter  on <me> is linked to  the parameter
90   //! on the first curve. This method creates the same bisector
91   //! where the curves are inversed.
92   Standard_EXPORT Handle(Bisector_BisecCC) ChangeGuide() const;
93 
94   Standard_EXPORT Handle(Geom2d_Geometry) Copy() const Standard_OVERRIDE;
95 
96 
97   //! Transformation of a geometric object. This tansformation
98   //! can be a translation, a rotation, a symmetry, a scaling
99   //! or a complex transformation obtained by combination of
100   //! the previous elementaries transformations.
101   Standard_EXPORT void Transform (const gp_Trsf2d& T) Standard_OVERRIDE;
102 
103   Standard_EXPORT Standard_Real FirstParameter() const Standard_OVERRIDE;
104 
105   Standard_EXPORT Standard_Real LastParameter() const Standard_OVERRIDE;
106 
107   Standard_EXPORT GeomAbs_Shape Continuity() const Standard_OVERRIDE;
108 
109   //! If necessary,  breaks the  curve in  intervals  of
110   //! continuity  <C1>.    And  returns   the number   of
111   //! intervals.
112   Standard_EXPORT Standard_Integer NbIntervals() const Standard_OVERRIDE;
113 
114   //! Returns  the  first  parameter    of  the  current
115   //! interval.
116   Standard_EXPORT Standard_Real IntervalFirst (const Standard_Integer Index) const Standard_OVERRIDE;
117 
118   //! Returns  the  last  parameter    of  the  current
119   //! interval.
120   Standard_EXPORT Standard_Real IntervalLast (const Standard_Integer Index) const Standard_OVERRIDE;
121 
122   Standard_EXPORT GeomAbs_Shape IntervalContinuity() const;
123 
124   Standard_EXPORT Standard_Boolean IsClosed() const Standard_OVERRIDE;
125 
126   Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE;
127 
128   //! Returns the point of parameter U.
129   //! Computes the distance between the current point and
130   //! the two curves I separate.
131   //! Computes the parameters on each curve corresponding
132   //! of the projection of the current point.
133   Standard_EXPORT gp_Pnt2d ValueAndDist (const Standard_Real U, Standard_Real& U1, Standard_Real& U2, Standard_Real& Distance) const;
134 
135   //! Returns the point of parameter U.
136   //! Computes the distance between the current point and
137   //! the two curves I separate.
138   //! Computes the parameters on each curve corresponding
139   //! of the projection of the current point.
140   Standard_EXPORT gp_Pnt2d ValueByInt (const Standard_Real U, Standard_Real& U1, Standard_Real& U2, Standard_Real& Distance) const;
141 
142   Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt2d& P) const Standard_OVERRIDE;
143 
144   Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V) const Standard_OVERRIDE;
145 
146   Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const Standard_OVERRIDE;
147 
148   Standard_EXPORT void D3 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2, gp_Vec2d& V3) const Standard_OVERRIDE;
149 
150   Standard_EXPORT gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE;
151 
152   Standard_EXPORT Standard_Boolean IsEmpty() const;
153 
154   //! Returns the parameter on the curve1 of the projection
155   //! of the point of parameter U on <me>.
156   Standard_EXPORT Standard_Real LinkBisCurve (const Standard_Real U) const;
157 
158   //! Returns the reciproque of LinkBisCurve.
159   Standard_EXPORT Standard_Real LinkCurveBis (const Standard_Real U) const;
160 
161   Standard_EXPORT Standard_Real Parameter (const gp_Pnt2d& P) const Standard_OVERRIDE;
162 
163   Standard_EXPORT Handle(Geom2d_Curve) Curve (const Standard_Integer IndCurve) const;
164 
165   Standard_EXPORT const Bisector_PolyBis& Polygon() const;
166 
167   Standard_EXPORT void Dump (const Standard_Integer Deep = 0, const Standard_Integer Offset = 0) const;
168 
169 
170 
171 
172   DEFINE_STANDARD_RTTIEXT(Bisector_BisecCC,Bisector_Curve)
173 
174 protected:
175 
176 
177 
178 
179 private:
180 
181 
182   Standard_EXPORT void Values (const Standard_Real U, const Standard_Integer N, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2, gp_Vec2d& V3) const;
183 
184   Standard_EXPORT void SupLastParameter();
185 
186   Standard_EXPORT gp_Pnt2d Extension (const Standard_Real U, Standard_Real& U1, Standard_Real& U2, Standard_Real& Dist, gp_Vec2d& T1) const;
187 
188   Standard_EXPORT Standard_Real SearchBound (const Standard_Real U1, const Standard_Real U2) const;
189 
190   Standard_EXPORT void ComputePointEnd();
191 
192   Standard_EXPORT void Curve (const Standard_Integer Index, const Handle(Geom2d_Curve)& C);
193 
194   Standard_EXPORT void Sign (const Standard_Integer Index, const Standard_Real Sign);
195 
196   Standard_EXPORT void Polygon (const Bisector_PolyBis& Poly);
197 
198   Standard_EXPORT void DistMax (const Standard_Real DistMax);
199 
200   Standard_EXPORT void IsConvex (const Standard_Integer Index, const Standard_Boolean IsConvex);
201 
202   Standard_EXPORT void IsEmpty (const Standard_Boolean IsEmpty);
203 
204   Standard_EXPORT void ExtensionStart (const Standard_Boolean ExtensionStart);
205 
206   Standard_EXPORT void ExtensionEnd (const Standard_Boolean ExtensionEnd);
207 
208   Standard_EXPORT void PointStart (const gp_Pnt2d& Point);
209 
210   Standard_EXPORT void PointEnd (const gp_Pnt2d& Point);
211 
212   Standard_EXPORT void StartIntervals (const TColStd_SequenceOfReal& StartIntervals);
213 
214   Standard_EXPORT void EndIntervals (const TColStd_SequenceOfReal& EndIntervals);
215 
216   Standard_EXPORT void FirstParameter (const Standard_Real U1);
217 
218   Standard_EXPORT void LastParameter (const Standard_Real U1);
219 
220   Handle(Geom2d_Curve) curve1;
221   Handle(Geom2d_Curve) curve2;
222   Standard_Real sign1;
223   Standard_Real sign2;
224   TColStd_SequenceOfReal startIntervals;
225   TColStd_SequenceOfReal endIntervals;
226   Standard_Integer currentInterval;
227   Bisector_PolyBis myPolygon;
228   Standard_Real shiftParameter;
229   Standard_Real distMax;
230   Standard_Boolean isEmpty;
231   Standard_Boolean isConvex1;
232   Standard_Boolean isConvex2;
233   Standard_Boolean extensionStart;
234   Standard_Boolean extensionEnd;
235   gp_Pnt2d pointStart;
236   gp_Pnt2d pointEnd;
237 
238 
239 };
240 
241 
242 
243 
244 
245 
246 
247 #endif // _Bisector_BisecCC_HeaderFile
248