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03cca6f742
The usage of *BRepAlgo_Section* has been replaced with the usage of *BRepAlgoAPI_Section* in *BRepProj_Projection* algorithm. The TODO statements have been removed from the failing test case in the "prj" grid as they are working correctly now. The following changes have been made to improve the performance *BRepAlgoAPI_Section*: 1. Revision of the *IntPolyh_Intersection* class to avoid repeated calculation of the deflection of the same triangulation. 2. Small revision of the Edge/Face intersection algorithm to perform Extrema computation on the whole intersection range of the edge instead of discrete ranges. 3. Implementation of the extrema computation for the Circle and Sphere. 4. Correct computation of the parameter of the point on the Circle.
293 lines
8.1 KiB
C++
293 lines
8.1 KiB
C++
// Created on: 1994-03-18
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// Created by: Bruno DUMORTIER
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// Copyright (c) 1994-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Extrema_ExtCS.hxx>
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#include <Extrema_POnCurv.hxx>
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#include <Extrema_POnSurf.hxx>
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#include <Geom_Curve.hxx>
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#include <Geom_Surface.hxx>
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#include <GeomAdaptor_Curve.hxx>
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#include <GeomAdaptor_Surface.hxx>
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#include <GeomAPI_ExtremaCurveSurface.hxx>
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#include <gp_Pnt.hxx>
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#include <Precision.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <StdFail_NotDone.hxx>
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//=======================================================================
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//function : GeomAPI_ExtremaCurveSurface
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveSurface::GeomAPI_ExtremaCurveSurface()
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{
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myIsDone = Standard_False;
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}
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//=======================================================================
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//function : GeomAPI_ExtremaCurveSurface
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveSurface::GeomAPI_ExtremaCurveSurface
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(const Handle(Geom_Curve)& Curve,
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const Handle(Geom_Surface)& Surface)
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{
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Init(Curve,Surface);
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}
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//=======================================================================
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//function : GeomAPI_ExtremaCurveSurface
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveSurface::GeomAPI_ExtremaCurveSurface
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(const Handle(Geom_Curve)& Curve,
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const Handle(Geom_Surface)& Surface,
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const Standard_Real Wmin,
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const Standard_Real Wmax,
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const Standard_Real Umin,
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const Standard_Real Umax,
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const Standard_Real Vmin,
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const Standard_Real Vmax)
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{
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Init(Curve,Surface,Wmin,Wmax,Umin,Umax,Vmin,Vmax);
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::Init
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(const Handle(Geom_Curve)& Curve,
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const Handle(Geom_Surface)& Surface)
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{
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GeomAdaptor_Curve TheCurve (Curve);
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GeomAdaptor_Surface TheSurface (Surface);
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Standard_Real Tol = Precision::PConfusion();
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Extrema_ExtCS theExtCS(TheCurve,TheSurface,Tol,Tol);
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myExtCS = theExtCS;
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myIsDone = myExtCS.IsDone() && (myExtCS.IsParallel() || myExtCS.NbExt() > 0);
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if ( myIsDone) {
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// evaluate the lower distance and its index;
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Standard_Real Dist2, Dist2Min = myExtCS.SquareDistance(1);
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myIndex = 1;
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for ( Standard_Integer i = 2; i <= myExtCS.NbExt(); i++) {
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Dist2 = myExtCS.SquareDistance(i);
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if ( Dist2 < Dist2Min) {
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Dist2Min = Dist2;
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myIndex = i;
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}
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}
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}
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::Init
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(const Handle(Geom_Curve)& Curve,
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const Handle(Geom_Surface)& Surface,
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const Standard_Real Wmin,
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const Standard_Real Wmax,
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const Standard_Real Umin,
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const Standard_Real Umax,
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const Standard_Real Vmin,
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const Standard_Real Vmax)
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{
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GeomAdaptor_Curve TheCurve (Curve, Wmin, Wmax);
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GeomAdaptor_Surface TheSurface (Surface, Umin, Umax, Vmin, Vmax);
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Standard_Real Tol = Precision::PConfusion();
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Extrema_ExtCS theExtCS(TheCurve,TheSurface,
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Wmin,Wmax,Umin,Umax,Vmin,Vmax,Tol,Tol);
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myExtCS = theExtCS;
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myIsDone = myExtCS.IsDone() && (myExtCS.IsParallel() || myExtCS.NbExt() > 0);
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if ( myIsDone) {
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// evaluate the lower distance and its index;
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Standard_Real Dist2, Dist2Min = myExtCS.SquareDistance(1);
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myIndex = 1;
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for ( Standard_Integer i = 2; i <= myExtCS.NbExt(); i++) {
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Dist2 = myExtCS.SquareDistance(i);
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if ( Dist2 < Dist2Min) {
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Dist2Min = Dist2;
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myIndex = i;
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}
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}
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}
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}
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//=======================================================================
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//function : NbExtrema
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//purpose :
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//=======================================================================
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Standard_Integer GeomAPI_ExtremaCurveSurface::NbExtrema() const
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{
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if ( myIsDone)
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return myExtCS.NbExt();
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else
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return 0;
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}
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//=======================================================================
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//function : Points
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::Points
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(const Standard_Integer Index,
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gp_Pnt& P1,
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gp_Pnt& P2) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Points");
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Extrema_POnCurv PC;
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Extrema_POnSurf PS;
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myExtCS.Points(Index,PC,PS);
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P1 = PC.Value();
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P2 = PS.Value();
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}
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//=======================================================================
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//function : Parameters
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::Parameters
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(const Standard_Integer Index,
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Standard_Real& W,
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Standard_Real& U,
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Standard_Real& V) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Parameters");
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Extrema_POnCurv PC;
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Extrema_POnSurf PS;
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myExtCS.Points(Index,PC,PS);
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W = PC.Parameter();
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PS.Parameter(U,V);
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}
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//=======================================================================
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//function : Distance
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//purpose :
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//=======================================================================
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Standard_Real GeomAPI_ExtremaCurveSurface::Distance
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(const Standard_Integer Index) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Distance");
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return sqrt (myExtCS.SquareDistance(Index));
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}
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//=======================================================================
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//function : NearestPoints
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::NearestPoints(gp_Pnt& PC, gp_Pnt& PS) const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveSurface::NearestPoints");
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Points(myIndex,PC,PS);
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}
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//=======================================================================
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//function : LowerDistanceParameters
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveSurface::LowerDistanceParameters
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(Standard_Real& W,
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Standard_Real& U,
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Standard_Real& V) const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveSurface::LowerDistanceParameters");
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Parameters(myIndex,W,U,V);
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}
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//=======================================================================
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//function : LowerDistance
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//purpose :
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//=======================================================================
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Standard_Real GeomAPI_ExtremaCurveSurface::LowerDistance() const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveSurface::LowerDistance");
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return sqrt (myExtCS.SquareDistance(myIndex));
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}
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//=======================================================================
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//function : Standard_Integer
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveSurface::operator Standard_Integer() const
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{
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return NbExtrema();
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}
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//=======================================================================
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//function : Standard_Real
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveSurface::operator Standard_Real() const
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{
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return LowerDistance();
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}
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