// Copyright (c) 1995-1999 Matra Datavision // Copyright (c) 1999-2014 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #include #include #include #include #include #include #include #include #include #include IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_BSplineCurve,DrawTrSurf_Curve) DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve ( const Handle(Geom_BSplineCurve)& C) : DrawTrSurf_Curve (C, Draw_vert, 16, 0.05, 1) { drawKnots = Standard_True; knotsForm = Draw_Losange; knotsLook = Draw_violet; knotsDim = 5; drawPoles = Standard_True; polesLook = Draw_rouge; } DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve ( const Handle(Geom_BSplineCurve)& C, const Draw_Color& CurvColor, const Draw_Color& PolesColor, const Draw_Color& KnotsColor, const Draw_MarkerShape KnotsShape, const Standard_Integer KnotsSize, const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots, const Standard_Integer Discret, const Standard_Real Deflection, const Standard_Integer DrawMode) : DrawTrSurf_Curve (C , CurvColor, Discret, Deflection, DrawMode) { drawKnots = ShowKnots; knotsForm = KnotsShape; knotsLook = KnotsColor; knotsDim = KnotsSize; drawPoles = ShowPoles; polesLook = PolesColor; } void DrawTrSurf_BSplineCurve::DrawOn (Draw_Display& dis) const { Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv); if (drawPoles) { Standard_Integer NbPoles = C->NbPoles(); dis.SetColor(polesLook); TColgp_Array1OfPnt CPoles (1, NbPoles); C->Poles (CPoles); dis.MoveTo(CPoles(1)); for (Standard_Integer i = 2; i <= NbPoles; i++) { dis.DrawTo(CPoles(i)); } if (C->IsPeriodic()) dis.DrawTo(CPoles(1)); } DrawTrSurf_Curve::DrawOn(dis); if (drawKnots) { Standard_Integer NbKnots = C->NbKnots(); TColStd_Array1OfReal CKnots (1, NbKnots); C->Knots (CKnots); dis.SetColor(knotsLook); Standard_Integer first = C->FirstUKnotIndex(); Standard_Integer last = C->LastUKnotIndex(); for (Standard_Integer i = first; i <= last; i++) { dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim); } } } void DrawTrSurf_BSplineCurve::DrawOn ( Draw_Display& dis, const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots ) const { Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv); if (drawPoles && ShowPoles) { Standard_Integer NbPoles = C->NbPoles(); dis.SetColor(polesLook); TColgp_Array1OfPnt CPoles (1, NbPoles); C->Poles (CPoles); dis.MoveTo(CPoles(1)); for (Standard_Integer i = 2; i <= NbPoles; i++) { dis.DrawTo(CPoles(i)); } } DrawTrSurf_Curve::DrawOn(dis); if (drawKnots && ShowKnots) { Standard_Integer NbKnots = C->NbKnots(); TColStd_Array1OfReal CKnots (1, NbKnots); C->Knots (CKnots); dis.SetColor(knotsLook); for (Standard_Integer i = 1; i <= NbKnots; i++) { dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim); } } } void DrawTrSurf_BSplineCurve::DrawOn ( Draw_Display& dis, const Standard_Real U1, const Standard_Real U2, const Standard_Integer Pindex, const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots ) const { Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv); Standard_Real Eps1 = Abs(Epsilon (U1)); Standard_Real Eps2 = Abs(Epsilon (U2)); Standard_Integer I1, J1, I2, J2; C->LocateU (U1, Eps1, I1, J1); C->LocateU (U2, Eps2, I2, J2); Standard_Integer ka = C->FirstUKnotIndex (); Standard_Integer kb = C->LastUKnotIndex (); if (drawPoles && ShowPoles) { Standard_Integer NbPoles = C->NbPoles(); dis.SetColor(polesLook); TColgp_Array1OfPnt CPoles (1, NbPoles); C->Poles (CPoles); if (Pindex == 0) { dis.MoveTo(CPoles(1)); for (Standard_Integer i = 2; i <= NbPoles; i++) { dis.DrawTo(CPoles(i)); } } else if (Pindex == 1) { dis.MoveTo(CPoles(1)); dis.DrawTo(CPoles(2)); } else if (Pindex == NbPoles) { dis.MoveTo(CPoles(NbPoles-1)); dis.DrawTo(CPoles(NbPoles)); } else { dis.MoveTo(CPoles(Pindex-1)); dis.DrawTo(CPoles(Pindex)); dis.DrawTo(CPoles(Pindex+1)); } } dis.SetColor(look); Standard_Integer Degree = C->Degree(); if (Degree == 1) { dis.MoveTo(C->Value(U1)); dis.DrawTo(C->Value(U2)); } else { Standard_Integer NbPoints; Standard_Integer Discret = GetDiscretisation(); Standard_Real Ustart = C->Knot (ka); Standard_Real Uend = C->Knot (kb); Standard_Real Du, U, Ua, Ub, Uk1, Uk2; if (I1 > ka) { ka = I1; Uk1 = U1; } else { U = U1; NbPoints = (Standard_Integer) Abs (Discret * (U1 - Ustart) / (Ustart - Uend)); NbPoints = Max (NbPoints, 30); Du = (Ustart - U1) / NbPoints; dis.MoveTo(C->Value (U)); for (Standard_Integer i = 1; i <= NbPoints - 2; i++) { U+= Du; dis.DrawTo(C->Value (U)); } dis.DrawTo(C->Value (Ustart)); Uk1 = Ustart; } if (J2 < kb) { kb = J2; Uk2 = U2; } else { Uk2 = Uend; U = Uend; NbPoints = (Standard_Integer) Abs (Discret * (U2 - Uend) / (Ustart - Uend)); NbPoints = Max (NbPoints, 30); Du = (U2 - Uend) / NbPoints; dis.MoveTo(C->Value (U)); for (Standard_Integer i = 1; i <= NbPoints - 2; i++) { U+= Du; dis.DrawTo(C->Value (U)); } dis.DrawTo(C->Value (U2)); } for (Standard_Integer k = ka; k < kb; k++) { if (k == ka) { Ua = Uk1; Ub = C->Knot (k+1); } else if (k == kb-1) { Ua = C->Knot (k); Ub = Uk2; } else { Ua = C->Knot (k); Ub = C->Knot (k+1); } U = Ua; NbPoints = (Standard_Integer) Abs (Discret * (Ua - Ub) / (Ustart - Uend)); NbPoints = Max (NbPoints, 30); Du = (Ub - Ua) / NbPoints; dis.MoveTo(C->Value (U)); for (Standard_Integer i = 1; i <= NbPoints - 2; i++) { U+= Du; dis.DrawTo(C->Value (U)); } dis.DrawTo(C->Value (Ub)); } } if (drawKnots && ShowKnots) { Standard_Integer NbKnots = C->NbKnots(); TColStd_Array1OfReal CKnots (1, NbKnots); C->Knots (CKnots); dis.SetColor(knotsLook); for (Standard_Integer i = J1; i <= I2; i++) { dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim); } } } void DrawTrSurf_BSplineCurve::ShowPoles () { drawPoles = Standard_True; } void DrawTrSurf_BSplineCurve::ShowKnots () { drawKnots = Standard_True; } void DrawTrSurf_BSplineCurve::ClearPoles () { drawPoles = Standard_False; } void DrawTrSurf_BSplineCurve::ClearKnots () { drawKnots = Standard_False; } void DrawTrSurf_BSplineCurve::FindPole ( const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real XPrec, Standard_Integer& Index) const { Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv); Standard_Real Prec = XPrec / D.Zoom(); gp_Pnt2d p1(X/D.Zoom(),Y/D.Zoom()); Index++; Standard_Integer NbPoles = bc->NbPoles(); while (Index <= NbPoles) { if (D.Project(bc->Pole(Index)).Distance(p1) <= Prec) return; Index++; } Index = 0; } void DrawTrSurf_BSplineCurve::FindKnot ( const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real Prec, Standard_Integer& Index) const { Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv); gp_Pnt2d p1(X,Y); Index++; Standard_Integer NbKnots = bc->NbKnots(); while (Index <= NbKnots) { if (D.Project(bc->Value(bc->Knot(Index))).Distance(p1) <= Prec) return; Index++; } Index = 0; } //======================================================================= //function : Copy //purpose : //======================================================================= Handle(Draw_Drawable3D) DrawTrSurf_BSplineCurve::Copy()const { Handle(DrawTrSurf_BSplineCurve) DC = new DrawTrSurf_BSplineCurve (Handle(Geom_BSplineCurve)::DownCast(curv->Copy()), look,polesLook,knotsLook,knotsForm,knotsDim, drawPoles,drawKnots, GetDiscretisation(),GetDeflection(),GetDrawMode()); return DC; }