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b311480e | 1 | // Created on: 1991-06-25 |
2 | // Created by: JCV | |
3 | // Copyright (c) 1991-1999 Matra Datavision | |
973c2be1 | 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
b311480e | 5 | // |
973c2be1 | 6 | // This file is part of Open CASCADE Technology software library. |
b311480e | 7 | // |
d5f74e42 | 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 | |
973c2be1 | 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. | |
b311480e | 13 | // |
973c2be1 | 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. | |
7fd59977 | 16 | |
17 | // modified by Edward AGAPOV (eap) Jan 28 2002 --- DN(), occ143(BUC60654) | |
18 | ||
42cf5bc1 | 19 | #include <Geom2d_BezierCurve.hxx> |
20 | #include <Geom2d_BSplineCurve.hxx> | |
7fd59977 | 21 | #include <Geom2d_Circle.hxx> |
42cf5bc1 | 22 | #include <Geom2d_Curve.hxx> |
7fd59977 | 23 | #include <Geom2d_Ellipse.hxx> |
42cf5bc1 | 24 | #include <Geom2d_Geometry.hxx> |
7fd59977 | 25 | #include <Geom2d_Hyperbola.hxx> |
42cf5bc1 | 26 | #include <Geom2d_Line.hxx> |
27 | #include <Geom2d_OffsetCurve.hxx> | |
7fd59977 | 28 | #include <Geom2d_Parabola.hxx> |
7fd59977 | 29 | #include <Geom2d_TrimmedCurve.hxx> |
42cf5bc1 | 30 | #include <Geom2d_UndefinedDerivative.hxx> |
31 | #include <Geom2d_UndefinedValue.hxx> | |
32 | #include <gp.hxx> | |
33 | #include <gp_Pnt2d.hxx> | |
34 | #include <gp_Trsf2d.hxx> | |
35 | #include <gp_Vec2d.hxx> | |
7fd59977 | 36 | #include <gp_XY.hxx> |
3d58dc49 | 37 | #include <Precision.hxx> |
42cf5bc1 | 38 | #include <Standard_ConstructionError.hxx> |
39 | #include <Standard_NoSuchObject.hxx> | |
40 | #include <Standard_NotImplemented.hxx> | |
41 | #include <Standard_RangeError.hxx> | |
42 | #include <Standard_Type.hxx> | |
7fd59977 | 43 | |
f5f4ebd0 | 44 | IMPLEMENT_STANDARD_RTTIEXT(Geom2d_OffsetCurve,Geom2d_Curve) |
7fd59977 | 45 | |
3d58dc49 | 46 | static const Standard_Real MyAngularToleranceForG1 = Precision::Angular(); |
7fd59977 | 47 | |
94f71cad | 48 | |
7fd59977 | 49 | //======================================================================= |
50 | //function : Copy | |
51 | //purpose : | |
52 | //======================================================================= | |
53 | ||
54 | Handle(Geom2d_Geometry) Geom2d_OffsetCurve::Copy () const | |
55 | { | |
c04c30b3 | 56 | Handle(Geom2d_OffsetCurve) C; |
d660a72a | 57 | C = new Geom2d_OffsetCurve (basisCurve, offsetValue); |
7fd59977 | 58 | return C; |
59 | } | |
60 | ||
61 | ||
62 | //======================================================================= | |
63 | //function : Geom2d_OffsetCurve | |
3d58dc49 | 64 | //purpose : Basis curve cannot be an Offset curve or trimmed from |
65 | // offset curve. | |
7fd59977 | 66 | //======================================================================= |
67 | ||
3d58dc49 | 68 | Geom2d_OffsetCurve::Geom2d_OffsetCurve (const Handle(Geom2d_Curve)& theCurve, |
69 | const Standard_Real theOffset, | |
70 | const Standard_Boolean isTheNotCheckC0) | |
71 | : offsetValue (theOffset) | |
7fd59977 | 72 | { |
3d58dc49 | 73 | SetBasisCurve (theCurve, isTheNotCheckC0); |
7fd59977 | 74 | } |
75 | ||
76 | //======================================================================= | |
77 | //function : Reverse | |
78 | //purpose : | |
79 | //======================================================================= | |
80 | ||
81 | void Geom2d_OffsetCurve::Reverse () | |
82 | { | |
83 | basisCurve->Reverse(); | |
84 | offsetValue = -offsetValue; | |
85 | } | |
86 | ||
87 | //======================================================================= | |
88 | //function : ReversedParameter | |
89 | //purpose : | |
90 | //======================================================================= | |
91 | ||
92 | Standard_Real Geom2d_OffsetCurve::ReversedParameter( const Standard_Real U) const | |
93 | { | |
94 | return basisCurve->ReversedParameter( U); | |
95 | } | |
96 | ||
97 | //======================================================================= | |
98 | //function : SetBasisCurve | |
99 | //purpose : | |
100 | //======================================================================= | |
101 | ||
c04c30b3 | 102 | void Geom2d_OffsetCurve::SetBasisCurve (const Handle(Geom2d_Curve)& C, |
3d58dc49 | 103 | const Standard_Boolean isNotCheckC0) |
7fd59977 | 104 | { |
3d58dc49 | 105 | const Standard_Real aUf = C->FirstParameter(), |
106 | aUl = C->LastParameter(); | |
107 | Handle(Geom2d_Curve) aCheckingCurve = C; | |
108 | Standard_Boolean isTrimmed = Standard_False; | |
109 | ||
110 | while(aCheckingCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)) || | |
111 | aCheckingCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) | |
112 | { | |
113 | if (aCheckingCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) | |
114 | { | |
115 | Handle(Geom2d_TrimmedCurve) aTrimC = | |
116 | Handle(Geom2d_TrimmedCurve)::DownCast(aCheckingCurve); | |
117 | aCheckingCurve = aTrimC->BasisCurve(); | |
118 | isTrimmed = Standard_True; | |
119 | } | |
120 | ||
121 | if (aCheckingCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) | |
122 | { | |
123 | Handle(Geom2d_OffsetCurve) aOC = | |
124 | Handle(Geom2d_OffsetCurve)::DownCast(aCheckingCurve); | |
125 | aCheckingCurve = aOC->BasisCurve(); | |
126 | offsetValue += aOC->Offset(); | |
127 | } | |
128 | } | |
129 | ||
130 | myBasisCurveContinuity = aCheckingCurve->Continuity(); | |
131 | ||
132 | Standard_Boolean isC0 = !isNotCheckC0 && | |
133 | (myBasisCurveContinuity == GeomAbs_C0); | |
06be28a4 RL |
134 | |
135 | // Basis curve must be at least C1 | |
3d58dc49 | 136 | if (isC0 && aCheckingCurve->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve))) |
06be28a4 | 137 | { |
3d58dc49 | 138 | Handle(Geom2d_BSplineCurve) aBC = Handle(Geom2d_BSplineCurve)::DownCast(aCheckingCurve); |
139 | if(aBC->IsG1(aUf, aUl, MyAngularToleranceForG1)) | |
06be28a4 | 140 | { |
3d58dc49 | 141 | //Checking if basis curve has more smooth (C1, G2 and above) is not done. |
142 | //It can be done in case of need. | |
143 | myBasisCurveContinuity = GeomAbs_G1; | |
144 | isC0 = Standard_False; | |
06be28a4 RL |
145 | } |
146 | ||
147 | // Raise exception if still C0 | |
3d58dc49 | 148 | if (isC0) |
06be28a4 RL |
149 | Standard_ConstructionError::Raise("Offset on C0 curve"); |
150 | } | |
3d58dc49 | 151 | // |
152 | if(isTrimmed) | |
153 | { | |
154 | basisCurve = new Geom2d_TrimmedCurve(aCheckingCurve, aUf, aUl); | |
155 | } | |
156 | else | |
157 | { | |
158 | basisCurve = aCheckingCurve; | |
159 | } | |
06be28a4 | 160 | |
d660a72a | 161 | myEvaluator = new Geom2dEvaluator_OffsetCurve(basisCurve, offsetValue); |
7fd59977 | 162 | } |
163 | ||
164 | //======================================================================= | |
165 | //function : SetOffsetValue | |
166 | //purpose : | |
167 | //======================================================================= | |
168 | ||
d660a72a | 169 | void Geom2d_OffsetCurve::SetOffsetValue (const Standard_Real D) |
170 | { | |
171 | offsetValue = D; | |
172 | myEvaluator->SetOffsetValue(offsetValue); | |
173 | } | |
7fd59977 | 174 | |
175 | //======================================================================= | |
176 | //function : BasisCurve | |
177 | //purpose : | |
178 | //======================================================================= | |
179 | ||
c04c30b3 | 180 | Handle(Geom2d_Curve) Geom2d_OffsetCurve::BasisCurve () const |
7fd59977 | 181 | { |
182 | return basisCurve; | |
183 | } | |
184 | ||
185 | //======================================================================= | |
186 | //function : Continuity | |
187 | //purpose : | |
188 | //======================================================================= | |
189 | ||
190 | GeomAbs_Shape Geom2d_OffsetCurve::Continuity () const | |
191 | { | |
192 | GeomAbs_Shape OffsetShape=GeomAbs_C0; | |
3d58dc49 | 193 | switch (myBasisCurveContinuity) { |
7fd59977 | 194 | case GeomAbs_C0 : OffsetShape = GeomAbs_C0; break; |
195 | case GeomAbs_C1 : OffsetShape = GeomAbs_C0; break; | |
196 | case GeomAbs_C2 : OffsetShape = GeomAbs_C1; break; | |
197 | case GeomAbs_C3 : OffsetShape = GeomAbs_C2; break; | |
198 | case GeomAbs_CN : OffsetShape = GeomAbs_CN; break; | |
199 | case GeomAbs_G1 : OffsetShape = GeomAbs_G1; break; | |
200 | case GeomAbs_G2 : OffsetShape = GeomAbs_G2; break; | |
201 | } | |
3d58dc49 | 202 | |
7fd59977 | 203 | return OffsetShape; |
204 | } | |
205 | ||
206 | //======================================================================= | |
207 | //function : D0 | |
208 | //purpose : | |
209 | //======================================================================= | |
210 | ||
94f71cad | 211 | void Geom2d_OffsetCurve::D0 (const Standard_Real theU, |
d660a72a | 212 | gp_Pnt2d& theP) const |
213 | { | |
214 | myEvaluator->D0(theU, theP); | |
94f71cad | 215 | } |
7fd59977 | 216 | |
217 | //======================================================================= | |
218 | //function : D1 | |
219 | //purpose : | |
220 | //======================================================================= | |
d660a72a | 221 | void Geom2d_OffsetCurve::D1 (const Standard_Real theU, gp_Pnt2d& theP, gp_Vec2d& theV1) const |
94f71cad | 222 | { |
d660a72a | 223 | myEvaluator->D1(theU, theP, theV1); |
7fd59977 | 224 | } |
225 | ||
226 | //======================================================================= | |
227 | //function : D2 | |
228 | //purpose : | |
229 | //======================================================================= | |
230 | ||
32ca7a51 | 231 | void Geom2d_OffsetCurve::D2 (const Standard_Real theU, |
d660a72a | 232 | gp_Pnt2d& theP, |
233 | gp_Vec2d& theV1, gp_Vec2d& theV2) const | |
7fd59977 | 234 | { |
d660a72a | 235 | myEvaluator->D2(theU, theP, theV1, theV2); |
7fd59977 | 236 | } |
237 | ||
238 | ||
239 | //======================================================================= | |
240 | //function : D3 | |
241 | //purpose : | |
242 | //======================================================================= | |
243 | ||
32ca7a51 | 244 | void Geom2d_OffsetCurve::D3 (const Standard_Real theU, |
d660a72a | 245 | gp_Pnt2d& theP, |
246 | gp_Vec2d& theV1, gp_Vec2d& theV2, gp_Vec2d& theV3) const | |
94f71cad | 247 | { |
d660a72a | 248 | myEvaluator->D3(theU, theP, theV1, theV2, theV3); |
94f71cad | 249 | } |
7fd59977 | 250 | |
251 | //======================================================================= | |
252 | //function : DN | |
253 | //purpose : | |
254 | //======================================================================= | |
255 | ||
d660a72a | 256 | gp_Vec2d Geom2d_OffsetCurve::DN (const Standard_Real U, |
257 | const Standard_Integer N) const | |
7fd59977 | 258 | { |
d660a72a | 259 | Standard_RangeError_Raise_if (N < 1, "Exception: Geom2d_OffsetCurve::DN(). N<1."); |
7fd59977 | 260 | |
261 | gp_Vec2d VN, VBidon; | |
262 | gp_Pnt2d PBidon; | |
263 | switch (N) { | |
264 | case 1: D1( U, PBidon, VN); break; | |
265 | case 2: D2( U, PBidon, VBidon, VN); break; | |
266 | case 3: D3( U, PBidon, VBidon, VBidon, VN); break; | |
267 | default: | |
32ca7a51 | 268 | Standard_NotImplemented::Raise("Exception: Derivative order is greater than 3. " |
269 | "Cannot compute of derivative."); | |
7fd59977 | 270 | } |
271 | ||
272 | return VN; | |
273 | } | |
274 | ||
7fd59977 | 275 | //======================================================================= |
276 | //function : FirstParameter | |
277 | //purpose : | |
278 | //======================================================================= | |
279 | ||
280 | Standard_Real Geom2d_OffsetCurve::FirstParameter () const | |
281 | { | |
282 | return basisCurve->FirstParameter(); | |
283 | } | |
284 | ||
285 | //======================================================================= | |
286 | //function : LastParameter | |
287 | //purpose : | |
288 | //======================================================================= | |
289 | ||
290 | Standard_Real Geom2d_OffsetCurve::LastParameter () const | |
291 | { | |
292 | return basisCurve->LastParameter(); | |
293 | } | |
294 | ||
295 | ||
296 | //======================================================================= | |
297 | //function : Offset | |
298 | //purpose : | |
299 | //======================================================================= | |
300 | ||
d660a72a | 301 | Standard_Real Geom2d_OffsetCurve::Offset () const |
302 | { return offsetValue; } | |
7fd59977 | 303 | |
304 | //======================================================================= | |
305 | //function : IsClosed | |
306 | //purpose : | |
307 | //======================================================================= | |
308 | ||
309 | Standard_Boolean Geom2d_OffsetCurve::IsClosed () const | |
310 | { | |
311 | gp_Pnt2d PF, PL; | |
312 | D0(FirstParameter(),PF); | |
313 | D0(LastParameter(),PL); | |
314 | return ( PF.Distance(PL) <= gp::Resolution()); | |
315 | } | |
316 | ||
317 | //======================================================================= | |
318 | //function : IsCN | |
319 | //purpose : | |
320 | //======================================================================= | |
321 | ||
322 | Standard_Boolean Geom2d_OffsetCurve::IsCN (const Standard_Integer N) const | |
323 | { | |
324 | Standard_RangeError_Raise_if (N < 0, " " ); | |
325 | return basisCurve->IsCN (N + 1); | |
326 | } | |
327 | ||
328 | //======================================================================= | |
329 | //function : IsPeriodic | |
330 | //purpose : | |
331 | //======================================================================= | |
332 | ||
333 | Standard_Boolean Geom2d_OffsetCurve::IsPeriodic () const | |
334 | { | |
335 | return basisCurve->IsPeriodic(); | |
336 | } | |
337 | ||
338 | //======================================================================= | |
339 | //function : Period | |
340 | //purpose : | |
341 | //======================================================================= | |
342 | ||
343 | Standard_Real Geom2d_OffsetCurve::Period() const | |
344 | { | |
345 | return basisCurve->Period(); | |
346 | } | |
347 | ||
348 | //======================================================================= | |
349 | //function : Transform | |
350 | //purpose : | |
351 | //======================================================================= | |
352 | ||
d660a72a | 353 | void Geom2d_OffsetCurve::Transform (const gp_Trsf2d& T) |
7fd59977 | 354 | { |
355 | basisCurve->Transform (T); | |
356 | offsetValue *= Abs(T.ScaleFactor()); | |
d660a72a | 357 | |
358 | myEvaluator->SetOffsetValue(offsetValue); | |
7fd59977 | 359 | } |
360 | ||
361 | ||
362 | //======================================================================= | |
363 | //function : TransformedParameter | |
364 | //purpose : | |
365 | //======================================================================= | |
366 | ||
367 | Standard_Real Geom2d_OffsetCurve::TransformedParameter(const Standard_Real U, | |
368 | const gp_Trsf2d& T) const | |
369 | { | |
370 | return basisCurve->TransformedParameter(U,T); | |
371 | } | |
372 | ||
373 | //======================================================================= | |
374 | //function : ParametricTransformation | |
375 | //purpose : | |
376 | //======================================================================= | |
377 | ||
378 | Standard_Real Geom2d_OffsetCurve::ParametricTransformation(const gp_Trsf2d& T) const | |
379 | { | |
380 | return basisCurve->ParametricTransformation(T); | |
381 | } | |
3d58dc49 | 382 | |
383 | //======================================================================= | |
384 | //function : GetBasisCurveContinuity | |
385 | //purpose : | |
386 | //======================================================================= | |
387 | GeomAbs_Shape Geom2d_OffsetCurve::GetBasisCurveContinuity() const | |
388 | { | |
389 | return myBasisCurveContinuity; | |
390 | } |