1 // Copyright (c) 2020 OPEN CASCADE SAS
3 // This file is part of the examples of the Open CASCADE Technology software library.
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22 #include "AdaptorCurve2d_AIS.h"
24 #include <Prs3d_LineAspect.hxx>
25 #include <Prs3d_PointAspect.hxx>
26 #include <StdPrs_PoleCurve.hxx>
27 #include <Geom2dAdaptor_Curve.hxx>
28 #include <GCPnts_QuasiUniformDeflection.hxx>
29 #include <Graphic3d_ArrayOfPolylines.hxx>
30 #include <Geom2d_BezierCurve.hxx>
31 #include <Geom2d_BSplineCurve.hxx>
32 #include <Geom2dLProp_CLProps2d.hxx>
34 AdaptorCurve2d_AIS::AdaptorCurve2d_AIS (const Handle(Geom2d_Curve)& theGeom2dCurve,
35 const Aspect_TypeOfLine theTypeOfLine,
36 const Aspect_WidthOfLine theWidthOfLine)
37 : myGeom2dCurve (theGeom2dCurve),
38 myTypeOfLine (theTypeOfLine),
39 myWidthOfLine (theWidthOfLine),
40 myDisplayPole (Standard_True),
41 myDisplayCurbure (Standard_False),
42 myDiscretisation (20),
49 void AdaptorCurve2d_AIS::Compute (const Handle(PrsMgr_PresentationManager3d)&,
50 const Handle(Prs3d_Presentation)& thePrs,
51 const Standard_Integer theMode)
58 Geom2dAdaptor_Curve anAdaptor(myGeom2dCurve);
59 GCPnts_QuasiUniformDeflection anEdgeDistrib(anAdaptor, 1.e-2);
60 if (anEdgeDistrib.IsDone())
62 Handle(Graphic3d_ArrayOfPolylines) aCurve = new Graphic3d_ArrayOfPolylines(anEdgeDistrib.NbPoints());
63 for (Standard_Integer i = 1; i <= anEdgeDistrib.NbPoints(); ++i)
65 aCurve->AddVertex(anEdgeDistrib.Value(i));
68 Handle(Graphic3d_Group) aPrsGroup = thePrs->NewGroup();
69 aPrsGroup->SetGroupPrimitivesAspect(myDrawer->LineAspect()->Aspect());
70 aPrsGroup->AddPrimitiveArray(aCurve);
75 if (anAdaptor.GetType() == GeomAbs_BezierCurve)
77 Handle(Geom2d_BezierCurve) aBezier = anAdaptor.Bezier();
78 Handle(Graphic3d_ArrayOfPolylines) anArrayOfVertex = new Graphic3d_ArrayOfPolylines(aBezier->NbPoles());
79 for (int i = 1; i <= aBezier->NbPoles(); i++)
81 gp_Pnt2d CurrentPoint = aBezier->Pole(i);
82 anArrayOfVertex->AddVertex(CurrentPoint.X(), CurrentPoint.Y(), 0.);
85 Handle(Graphic3d_Group) aPrsGroup = thePrs->NewGroup();
86 aPrsGroup->SetGroupPrimitivesAspect(myDrawer->LineAspect()->Aspect());
87 aPrsGroup->AddPrimitiveArray(anArrayOfVertex);
90 if (anAdaptor.GetType() == GeomAbs_BSplineCurve)
92 Handle(Geom2d_BSplineCurve) aBSpline = anAdaptor.BSpline();
93 Handle(Graphic3d_ArrayOfPolylines) anArrayOfVertex = new Graphic3d_ArrayOfPolylines(aBSpline->NbPoles());
94 for (int i = 1; i <= aBSpline->NbPoles(); i++)
96 gp_Pnt2d CurrentPoint = aBSpline->Pole(i);
97 anArrayOfVertex->AddVertex(CurrentPoint.X(), CurrentPoint.Y(), 0.);
100 Handle(Graphic3d_Group) aPrsGroup = thePrs->NewGroup();
101 aPrsGroup->SetGroupPrimitivesAspect(myDrawer->LineAspect()->Aspect());
102 aPrsGroup->AddPrimitiveArray(anArrayOfVertex);
106 if (myDisplayCurbure && (anAdaptor.GetType() != GeomAbs_Line))
108 const Standard_Integer nbintv = anAdaptor.NbIntervals(GeomAbs_CN);
109 TColStd_Array1OfReal TI(1, nbintv + 1);
110 anAdaptor.Intervals(TI, GeomAbs_CN);
111 Standard_Real Resolution = 1.0e-9, Curvature;
112 Geom2dLProp_CLProps2d LProp(myGeom2dCurve, 2, Resolution);
115 Handle(Graphic3d_Group) aPrsGroup = thePrs->NewGroup();
116 aPrsGroup->SetGroupPrimitivesAspect (myDrawer->LineAspect()->Aspect());
117 for (Standard_Integer intrv = 1; intrv <= nbintv; intrv++)
119 Standard_Real t = TI(intrv);
120 Standard_Real step = (TI(intrv + 1) - t) / GetDiscretisation();
121 Standard_Real LRad, ratio;
122 for (Standard_Integer ii = 1; ii <= myDiscretisation; ii++)
124 LProp.SetParameter(t);
125 if (LProp.IsTangentDefined())
127 Curvature = Abs(LProp.Curvature());
128 if (Curvature > Resolution)
130 myGeom2dCurve->D0(t, P1);
131 LRad = 1. / Curvature;
132 ratio = ((LRad > myradiusmax) ? myradiusmax / LRad : 1);
133 ratio *= myradiusratio;
134 LProp.CentreOfCurvature(P2);
136 gp_Pnt2d P3 = P1.Translated(ratio*V);
137 Handle(Graphic3d_ArrayOfPolylines) aSegment = new Graphic3d_ArrayOfPolylines(2);
138 aSegment->AddVertex(P1.X(), P1.Y(), 0.);
139 aSegment->AddVertex(P3.X(), P3.Y(), 0.);
140 aPrsGroup->AddPrimitiveArray(aSegment);