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1 | // Created on: 1994-03-23 |
2 | // Created by: Bruno DUMORTIER |
3 | // Copyright (c) 1994-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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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 |
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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. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
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16 | |
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17 | |
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18 | #include <Extrema_ExtPC2d.hxx> |
19 | #include <Geom2d_Curve.hxx> |
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20 | #include <Geom2dAdaptor_Curve.hxx> |
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21 | #include <Geom2dAPI_ProjectPointOnCurve.hxx> |
22 | #include <gp_Pnt2d.hxx> |
23 | #include <Standard_OutOfRange.hxx> |
24 | #include <StdFail_NotDone.hxx> |
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25 | |
26 | //======================================================================= |
27 | //function : Geom2dAPI_ProjectPointOnCurve |
28 | //purpose : |
29 | //======================================================================= |
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30 | Geom2dAPI_ProjectPointOnCurve::Geom2dAPI_ProjectPointOnCurve() |
31 | { |
32 | myIsDone = Standard_False; |
33 | } |
34 | |
35 | |
36 | //======================================================================= |
37 | //function : Geom2dAPI_ProjectPointOnCurve |
38 | //purpose : |
39 | //======================================================================= |
40 | |
41 | Geom2dAPI_ProjectPointOnCurve::Geom2dAPI_ProjectPointOnCurve |
42 | (const gp_Pnt2d& P, |
43 | const Handle(Geom2d_Curve)& Curve) |
44 | { |
45 | Init(P,Curve); |
46 | } |
47 | |
48 | |
49 | //======================================================================= |
50 | //function : Geom2dAPI_ProjectPointOnCurve |
51 | //purpose : |
52 | //======================================================================= |
53 | |
54 | Geom2dAPI_ProjectPointOnCurve::Geom2dAPI_ProjectPointOnCurve |
55 | (const gp_Pnt2d& P, |
56 | const Handle(Geom2d_Curve)& Curve, |
57 | const Standard_Real Umin, |
58 | const Standard_Real Usup) |
59 | { |
60 | Init(P,Curve,Umin,Usup); |
61 | } |
62 | |
63 | |
64 | //======================================================================= |
65 | //function : Init |
66 | //purpose : |
67 | //======================================================================= |
68 | |
69 | void Geom2dAPI_ProjectPointOnCurve::Init |
70 | (const gp_Pnt2d& P, |
71 | const Handle(Geom2d_Curve)& Curve) |
72 | { |
73 | Init(P,Curve,Curve->FirstParameter(),Curve->LastParameter()); |
74 | } |
75 | |
76 | |
77 | //======================================================================= |
78 | //function : Init |
79 | //purpose : |
80 | //======================================================================= |
81 | |
82 | void Geom2dAPI_ProjectPointOnCurve::Init |
83 | (const gp_Pnt2d& P, |
84 | const Handle(Geom2d_Curve)& Curve, |
85 | const Standard_Real Umin, |
86 | const Standard_Real Usup ) |
87 | { |
88 | myC.Load(Curve,Umin,Usup); |
89 | |
90 | Extrema_ExtPC2d theExtPC2d(P, myC); |
91 | |
92 | myExtPC = theExtPC2d; |
93 | |
94 | myIsDone = myExtPC.IsDone() && ( myExtPC.NbExt() > 0); |
95 | |
96 | |
97 | // evaluate the lower distance and its index; |
98 | |
99 | if ( myIsDone) { |
100 | Standard_Real Dist2, Dist2Min = myExtPC.SquareDistance(1); |
101 | myIndex = 1; |
102 | |
103 | for ( Standard_Integer i = 2; i <= myExtPC.NbExt(); i++) { |
104 | Dist2 = myExtPC.SquareDistance(i); |
105 | if ( Dist2 < Dist2Min) { |
106 | Dist2Min = Dist2; |
107 | myIndex = i; |
108 | } |
109 | } |
110 | } |
111 | } |
112 | |
113 | |
114 | //======================================================================= |
115 | //function : NbPoints |
116 | //purpose : |
117 | //======================================================================= |
118 | |
119 | Standard_Integer Geom2dAPI_ProjectPointOnCurve::NbPoints() const |
120 | { |
121 | if ( myIsDone) |
122 | return myExtPC.NbExt(); |
123 | else |
124 | return 0; |
125 | } |
126 | |
127 | |
128 | //======================================================================= |
129 | //function : Point |
130 | //purpose : |
131 | //======================================================================= |
132 | |
133 | gp_Pnt2d Geom2dAPI_ProjectPointOnCurve::Point |
134 | (const Standard_Integer Index) const |
135 | { |
136 | Standard_OutOfRange_Raise_if( Index < 1 || Index > NbPoints(), |
137 | "Geom2dAPI_ProjectPointOnCurve::Point"); |
138 | return (myExtPC.Point(Index)).Value(); |
139 | } |
140 | |
141 | |
142 | //======================================================================= |
143 | //function : Parameter |
144 | //purpose : |
145 | //======================================================================= |
146 | |
147 | Standard_Real Geom2dAPI_ProjectPointOnCurve::Parameter |
148 | (const Standard_Integer Index) const |
149 | { |
150 | Standard_OutOfRange_Raise_if( Index < 1 || Index > NbPoints(), |
151 | "Geom2dAPI_ProjectPointOnCurve::Parameter"); |
152 | return (myExtPC.Point(Index)).Parameter(); |
153 | } |
154 | |
155 | |
156 | //======================================================================= |
157 | //function : Parameter |
158 | //purpose : |
159 | //======================================================================= |
160 | |
161 | void Geom2dAPI_ProjectPointOnCurve::Parameter |
162 | (const Standard_Integer Index, |
163 | Standard_Real& U ) const |
164 | { |
165 | Standard_OutOfRange_Raise_if( Index < 1 || Index > NbPoints(), |
166 | "Geom2dAPI_ProjectPointOnCurve::Parameter"); |
167 | U = (myExtPC.Point(Index)).Parameter(); |
168 | } |
169 | |
170 | |
171 | //======================================================================= |
172 | //function : Distance |
173 | //purpose : |
174 | //======================================================================= |
175 | |
176 | Standard_Real Geom2dAPI_ProjectPointOnCurve::Distance |
177 | (const Standard_Integer Index) const |
178 | { |
179 | Standard_OutOfRange_Raise_if( Index < 1 || Index > NbPoints(), |
180 | "Geom2dAPI_ProjectPointOnCurve::Distance"); |
181 | return sqrt(myExtPC.SquareDistance(Index)); |
182 | } |
183 | |
184 | |
185 | //======================================================================= |
186 | //function : NearestPoint |
187 | //purpose : |
188 | //======================================================================= |
189 | |
190 | gp_Pnt2d Geom2dAPI_ProjectPointOnCurve::NearestPoint() const |
191 | { |
192 | StdFail_NotDone_Raise_if |
193 | (!myIsDone, "Geom2dAPI_ProjectPointOnCurve:NearestPoint"); |
194 | |
195 | return (myExtPC.Point(myIndex)).Value(); |
196 | } |
197 | |
198 | |
199 | //======================================================================= |
200 | //function : Standard_Integer |
201 | //purpose : |
202 | //======================================================================= |
203 | |
204 | Geom2dAPI_ProjectPointOnCurve::operator Standard_Integer() const |
205 | { |
206 | return NbPoints(); |
207 | } |
208 | |
209 | |
210 | //======================================================================= |
211 | //function : gp_Pnt2d |
212 | //purpose : |
213 | //======================================================================= |
214 | |
215 | Geom2dAPI_ProjectPointOnCurve::operator gp_Pnt2d() const |
216 | { |
217 | return NearestPoint(); |
218 | } |
219 | |
220 | |
221 | //======================================================================= |
222 | //function : LowerDistanceParameter |
223 | //purpose : |
224 | //======================================================================= |
225 | |
226 | Standard_Real Geom2dAPI_ProjectPointOnCurve::LowerDistanceParameter() const |
227 | { |
228 | StdFail_NotDone_Raise_if |
229 | (!myIsDone, "Geom2dAPI_ProjectPointOnCurve:LowerDistanceParameter"); |
230 | |
231 | return (myExtPC.Point(myIndex)).Parameter(); |
232 | } |
233 | |
234 | |
235 | //======================================================================= |
236 | //function : LowerDistance |
237 | //purpose : |
238 | //======================================================================= |
239 | |
240 | Standard_Real Geom2dAPI_ProjectPointOnCurve::LowerDistance() const |
241 | { |
242 | StdFail_NotDone_Raise_if |
243 | (!myIsDone,"Geom2dAPI_ProjectPointOnCurve:LowerDistance"); |
244 | |
245 | return sqrt (myExtPC.SquareDistance(myIndex)); |
246 | } |
247 | |
248 | |
249 | //======================================================================= |
250 | //function : operator |
251 | //purpose : |
252 | //======================================================================= |
253 | |
254 | Geom2dAPI_ProjectPointOnCurve::operator Standard_Real() const |
255 | { |
256 | return LowerDistance(); |
257 | } |