| 1 | // Created on: 1993-03-24 |
| 2 | // Created by: JCV |
| 3 | // Copyright (c) 1993-1999 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 | #include <Geom2d_TrimmedCurve.ixx> |
| 18 | #include <gp.hxx> |
| 19 | #include <Geom2d_Geometry.hxx> |
| 20 | #include <Geom2d_BSplineCurve.hxx> |
| 21 | #include <Geom2d_BezierCurve.hxx> |
| 22 | #include <Geom2d_OffsetCurve.hxx> |
| 23 | #include <Geom2d_Line.hxx> |
| 24 | #include <Geom2d_Circle.hxx> |
| 25 | #include <Geom2d_Ellipse.hxx> |
| 26 | #include <Geom2d_Hyperbola.hxx> |
| 27 | #include <Geom2d_Parabola.hxx> |
| 28 | #include <Standard_ConstructionError.hxx> |
| 29 | #include <Standard_RangeError.hxx> |
| 30 | #include <ElCLib.hxx> |
| 31 | #include <Precision.hxx> |
| 32 | |
| 33 | |
| 34 | typedef Handle(Geom2d_TrimmedCurve) Handle(TrimmedCurve); |
| 35 | typedef Geom2d_TrimmedCurve TrimmedCurve; |
| 36 | typedef Handle(Geom2d_Curve) Handle(Curve); |
| 37 | typedef Handle(Geom2d_Geometry) Handle(Geometry); |
| 38 | typedef gp_Ax2d Ax2d; |
| 39 | typedef gp_Pnt2d Pnt2d; |
| 40 | typedef gp_Trsf2d Trsf2d; |
| 41 | typedef gp_Vec2d Vec2d; |
| 42 | |
| 43 | |
| 44 | |
| 45 | |
| 46 | |
| 47 | //======================================================================= |
| 48 | //function : Copy |
| 49 | //purpose : |
| 50 | //======================================================================= |
| 51 | |
| 52 | Handle(Geom2d_Geometry) Geom2d_TrimmedCurve::Copy () const |
| 53 | { |
| 54 | Handle(TrimmedCurve) Tc; |
| 55 | Tc = new TrimmedCurve (basisCurve, uTrim1, uTrim2); |
| 56 | return Tc; |
| 57 | } |
| 58 | |
| 59 | //======================================================================= |
| 60 | //function : Geom2d_TrimmedCurve |
| 61 | //purpose : |
| 62 | //======================================================================= |
| 63 | |
| 64 | Geom2d_TrimmedCurve::Geom2d_TrimmedCurve (const Handle(Geom2d_Curve)& C, |
| 65 | const Standard_Real U1, |
| 66 | const Standard_Real U2, |
| 67 | const Standard_Boolean Sense, |
| 68 | const Standard_Boolean theAdjustPeriodic) : |
| 69 | uTrim1 (U1), |
| 70 | uTrim2 (U2) |
| 71 | { |
| 72 | if(C.IsNull()) Standard_ConstructionError::Raise("Geom2d_TrimmedCurve:: C is null"); |
| 73 | // kill trimmed basis curves |
| 74 | Handle(Geom2d_TrimmedCurve) T = Handle(Geom2d_TrimmedCurve)::DownCast(C); |
| 75 | if (!T.IsNull()) |
| 76 | basisCurve = Handle(Curve)::DownCast(T->BasisCurve()->Copy()); |
| 77 | else |
| 78 | basisCurve = Handle(Curve)::DownCast(C->Copy()); |
| 79 | |
| 80 | SetTrim(U1, U2, Sense, theAdjustPeriodic); |
| 81 | } |
| 82 | |
| 83 | //======================================================================= |
| 84 | //function : Reverse |
| 85 | //purpose : |
| 86 | //======================================================================= |
| 87 | |
| 88 | void Geom2d_TrimmedCurve::Reverse () |
| 89 | { |
| 90 | Standard_Real U1 = basisCurve->ReversedParameter(uTrim2); |
| 91 | Standard_Real U2 = basisCurve->ReversedParameter(uTrim1); |
| 92 | basisCurve->Reverse(); |
| 93 | SetTrim(U1, U2, Standard_True, Standard_False); |
| 94 | } |
| 95 | |
| 96 | //======================================================================= |
| 97 | //function : ReversedParamater |
| 98 | //purpose : |
| 99 | //======================================================================= |
| 100 | |
| 101 | Standard_Real Geom2d_TrimmedCurve::ReversedParameter( const Standard_Real U) const |
| 102 | { |
| 103 | return basisCurve->ReversedParameter(U); |
| 104 | } |
| 105 | |
| 106 | //======================================================================= |
| 107 | //function : SetTrim |
| 108 | //purpose : |
| 109 | //======================================================================= |
| 110 | |
| 111 | void Geom2d_TrimmedCurve::SetTrim (const Standard_Real U1, |
| 112 | const Standard_Real U2, |
| 113 | const Standard_Boolean Sense, |
| 114 | const Standard_Boolean theAdjustPeriodic) |
| 115 | { |
| 116 | Standard_Boolean sameSense = Standard_True; |
| 117 | if (U1 == U2) |
| 118 | Standard_ConstructionError::Raise("Geom2d_TrimmedCurve::U1 == U2"); |
| 119 | |
| 120 | Standard_Real Udeb = basisCurve->FirstParameter(); |
| 121 | Standard_Real Ufin = basisCurve->LastParameter(); |
| 122 | |
| 123 | if (basisCurve->IsPeriodic()) { |
| 124 | sameSense = Sense; |
| 125 | |
| 126 | // set uTrim1 in the range Udeb , Ufin |
| 127 | // set uTrim2 in the range uTrim1 , uTrim1 + Period() |
| 128 | uTrim1 = U1; |
| 129 | uTrim2 = U2; |
| 130 | if (theAdjustPeriodic) |
| 131 | ElCLib::AdjustPeriodic(Udeb, Ufin, |
| 132 | Min(Abs(uTrim2-uTrim1)/2,Precision::PConfusion()), |
| 133 | uTrim1, uTrim2); |
| 134 | } |
| 135 | else { |
| 136 | if (U1 < U2) { |
| 137 | sameSense = Sense; |
| 138 | uTrim1 = U1; |
| 139 | uTrim2 = U2; |
| 140 | } |
| 141 | else { |
| 142 | sameSense = !Sense; |
| 143 | uTrim1 = U2; |
| 144 | uTrim2 = U1; |
| 145 | } |
| 146 | |
| 147 | if ((Udeb - uTrim1 > Precision::PConfusion()) || |
| 148 | (uTrim2 - Ufin > Precision::PConfusion())) { |
| 149 | Standard_ConstructionError::Raise |
| 150 | ("Geom_TrimmedCurve::parameters out of range"); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | if (!sameSense) |
| 155 | Reverse(); |
| 156 | } |
| 157 | |
| 158 | //======================================================================= |
| 159 | //function : BasisCurve |
| 160 | //purpose : |
| 161 | //======================================================================= |
| 162 | |
| 163 | Handle(Curve) Geom2d_TrimmedCurve::BasisCurve () const |
| 164 | { |
| 165 | return basisCurve; |
| 166 | } |
| 167 | |
| 168 | //======================================================================= |
| 169 | //function : Continuity |
| 170 | //purpose : |
| 171 | //======================================================================= |
| 172 | |
| 173 | GeomAbs_Shape Geom2d_TrimmedCurve::Continuity () const |
| 174 | { |
| 175 | return basisCurve->Continuity(); |
| 176 | } |
| 177 | |
| 178 | //======================================================================= |
| 179 | //function : IsCN |
| 180 | //purpose : |
| 181 | //======================================================================= |
| 182 | |
| 183 | Standard_Boolean Geom2d_TrimmedCurve::IsCN (const Standard_Integer N) const |
| 184 | { |
| 185 | Standard_RangeError_Raise_if (N < 0, " "); |
| 186 | return basisCurve->IsCN (N); |
| 187 | } |
| 188 | |
| 189 | //======================================================================= |
| 190 | //function : EndPoint |
| 191 | //purpose : |
| 192 | //======================================================================= |
| 193 | |
| 194 | Pnt2d Geom2d_TrimmedCurve::EndPoint () const |
| 195 | { |
| 196 | return basisCurve->Value(uTrim2); |
| 197 | } |
| 198 | |
| 199 | //======================================================================= |
| 200 | //function : FirstParameter |
| 201 | //purpose : |
| 202 | //======================================================================= |
| 203 | |
| 204 | Standard_Real Geom2d_TrimmedCurve::FirstParameter () const { return uTrim1; } |
| 205 | |
| 206 | //======================================================================= |
| 207 | //function : IsClosed |
| 208 | //purpose : |
| 209 | //======================================================================= |
| 210 | |
| 211 | Standard_Boolean Geom2d_TrimmedCurve::IsClosed () const |
| 212 | { |
| 213 | Standard_Real Dist = |
| 214 | Value(FirstParameter()).Distance(Value(LastParameter())); |
| 215 | return ( Dist <= gp::Resolution()); |
| 216 | } |
| 217 | |
| 218 | //======================================================================= |
| 219 | //function : IsPeriodic |
| 220 | //purpose : |
| 221 | //======================================================================= |
| 222 | |
| 223 | Standard_Boolean Geom2d_TrimmedCurve::IsPeriodic () const |
| 224 | { |
| 225 | //return basisCurve->IsPeriodic(); |
| 226 | return Standard_False; |
| 227 | } |
| 228 | |
| 229 | //======================================================================= |
| 230 | //function : Period |
| 231 | //purpose : |
| 232 | //======================================================================= |
| 233 | |
| 234 | Standard_Real Geom2d_TrimmedCurve::Period () const |
| 235 | { |
| 236 | return basisCurve->Period(); |
| 237 | } |
| 238 | |
| 239 | //======================================================================= |
| 240 | //function : LastParameter |
| 241 | //purpose : |
| 242 | //======================================================================= |
| 243 | |
| 244 | Standard_Real Geom2d_TrimmedCurve::LastParameter () const { return uTrim2; } |
| 245 | |
| 246 | //======================================================================= |
| 247 | //function : StartPoint |
| 248 | //purpose : |
| 249 | //======================================================================= |
| 250 | |
| 251 | Pnt2d Geom2d_TrimmedCurve::StartPoint () const |
| 252 | { |
| 253 | gp_Pnt2d P; |
| 254 | P = basisCurve->Value(uTrim1); |
| 255 | return P; |
| 256 | } |
| 257 | |
| 258 | //======================================================================= |
| 259 | //function : D0 |
| 260 | //purpose : |
| 261 | //======================================================================= |
| 262 | |
| 263 | void Geom2d_TrimmedCurve::D0 (const Standard_Real U, |
| 264 | Pnt2d& P ) const { |
| 265 | basisCurve->D0(U, P); |
| 266 | } |
| 267 | |
| 268 | //======================================================================= |
| 269 | //function : D1 |
| 270 | //purpose : |
| 271 | //======================================================================= |
| 272 | |
| 273 | void Geom2d_TrimmedCurve::D1 (const Standard_Real U, Pnt2d& P, Vec2d& V1) const |
| 274 | { |
| 275 | basisCurve->D1 (U, P, V1); |
| 276 | } |
| 277 | |
| 278 | //======================================================================= |
| 279 | //function : D2 |
| 280 | //purpose : |
| 281 | //======================================================================= |
| 282 | |
| 283 | void Geom2d_TrimmedCurve::D2 (const Standard_Real U, |
| 284 | Pnt2d& P, |
| 285 | Vec2d& V1, Vec2d& V2) const |
| 286 | { |
| 287 | basisCurve->D2 (U, P, V1, V2); |
| 288 | } |
| 289 | |
| 290 | //======================================================================= |
| 291 | //function : D3 |
| 292 | //purpose : |
| 293 | //======================================================================= |
| 294 | |
| 295 | void Geom2d_TrimmedCurve::D3 (const Standard_Real U, |
| 296 | Pnt2d& P, |
| 297 | Vec2d& V1, Vec2d& V2, Vec2d& V3) const |
| 298 | { |
| 299 | basisCurve->D3 (U, P, V1, V2, V3); |
| 300 | } |
| 301 | |
| 302 | //======================================================================= |
| 303 | //function : DN |
| 304 | //purpose : |
| 305 | //======================================================================= |
| 306 | |
| 307 | Vec2d Geom2d_TrimmedCurve::DN (const Standard_Real U, const Standard_Integer N) const |
| 308 | { |
| 309 | return basisCurve->DN(U, N); |
| 310 | } |
| 311 | |
| 312 | //======================================================================= |
| 313 | //function : Transform |
| 314 | //purpose : |
| 315 | //======================================================================= |
| 316 | |
| 317 | void Geom2d_TrimmedCurve::Transform (const Trsf2d& T) |
| 318 | { |
| 319 | basisCurve->Transform (T); |
| 320 | Standard_Real U1 = basisCurve->TransformedParameter(uTrim1,T); |
| 321 | Standard_Real U2 = basisCurve->TransformedParameter(uTrim2,T); |
| 322 | SetTrim(U1, U2, Standard_True, Standard_False); |
| 323 | } |
| 324 | |
| 325 | //======================================================================= |
| 326 | //function : TransformedParameter |
| 327 | //purpose : |
| 328 | //======================================================================= |
| 329 | |
| 330 | Standard_Real Geom2d_TrimmedCurve::TransformedParameter(const Standard_Real U, |
| 331 | const gp_Trsf2d& T) const |
| 332 | { |
| 333 | return basisCurve->TransformedParameter(U,T); |
| 334 | } |
| 335 | |
| 336 | //======================================================================= |
| 337 | //function : ParametricTransformation |
| 338 | //purpose : |
| 339 | //======================================================================= |
| 340 | |
| 341 | Standard_Real Geom2d_TrimmedCurve::ParametricTransformation(const gp_Trsf2d& T) const |
| 342 | { |
| 343 | return basisCurve->ParametricTransformation(T); |
| 344 | } |
| 345 | |