1 // Copyright (c) 1995-1999 Matra Datavision
2 // Copyright (c) 1999-2014 OPEN CASCADE SAS
4 // This file is part of Open CASCADE Technology software library.
6 // This library is free software; you can redistribute it and/or modify it under
7 // the terms of the GNU Lesser General Public License version 2.1 as published
8 // by the Free Software Foundation, with special exception defined in the file
9 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10 // distribution for complete text of the license and disclaimer of any warranty.
12 // Alternatively, this file may be used under the terms of Open CASCADE
13 // commercial license or contractual agreement.
16 #include <Draw_Color.hxx>
17 #include <Draw_Display.hxx>
18 #include <Draw_Drawable3D.hxx>
19 #include <DrawTrSurf_Curve2d.hxx>
20 #include <Geom2d_Curve.hxx>
21 #include <Geom2d_Hyperbola.hxx>
22 #include <Geom2d_Line.hxx>
23 #include <Geom2d_OffsetCurve.hxx>
24 #include <Geom2d_Parabola.hxx>
25 #include <Geom2dAdaptor_Curve.hxx>
26 #include <Geom2dLProp_CLProps2d.hxx>
27 #include <Geom_Plane.hxx>
28 #include <GeomTools_Curve2dSet.hxx>
30 #include <Precision.hxx>
31 #include <Standard_Type.hxx>
32 #include <TColStd_Array1OfReal.hxx>
34 IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_Curve2d,DrawTrSurf_Drawable)
36 static Standard_Real DrawTrSurf_CurveLimit = 400;
37 extern Standard_Boolean Draw_Bounds;
39 //=======================================================================
40 //function : DrawTrSurf_Curve2d
42 //=======================================================================
44 DrawTrSurf_Curve2d::DrawTrSurf_Curve2d (const Handle(Geom2d_Curve)& C,
45 const Standard_Boolean DispOrigin) :
46 DrawTrSurf_Drawable (50)
50 disporigin = DispOrigin ;
51 dispcurvradius = Standard_False;
57 //=======================================================================
58 //function : DrawTrSurf_Curve2d
60 //=======================================================================
62 DrawTrSurf_Curve2d::DrawTrSurf_Curve2d (const Handle(Geom2d_Curve)& C,
63 const Draw_Color& aColor,
64 const Standard_Integer Discret,
65 const Standard_Boolean DispOrigin,
66 const Standard_Boolean DispCurvRadius,
67 const Standard_Real RadiusMax,
68 const Standard_Real RadiusRatio) :
69 DrawTrSurf_Drawable (Discret)
73 disporigin = DispOrigin ;
74 dispcurvradius = DispCurvRadius;
75 radiusmax = RadiusMax;
76 radiusratio = RadiusRatio;
80 //=======================================================================
83 //=======================================================================
85 void DrawTrSurf_Curve2d::DrawOn (Draw_Display& dis) const
88 Standard_Real First = curv->FirstParameter();
89 Standard_Real Last = curv->LastParameter();
90 Standard_Boolean firstInf = Precision::IsNegativeInfinite(First);
91 Standard_Boolean lastInf = Precision::IsPositiveInfinite(Last);
93 if (firstInf || lastInf) {
95 Standard_Real delta = 1;
96 if (firstInf && lastInf) {
103 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
109 First = Last - delta;
111 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
117 Last = First + delta;
119 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
125 Geom2dAdaptor_Curve C2d(curv,First,Last);
126 DrawCurve2dOn (C2d, dis);
130 Draw_Bounds = Standard_False;
134 if (v.Magnitude() > gp::Resolution()) {
135 Standard_Real L = 20 / dis.Zoom();
136 Standard_Real H = 10 / dis.Zoom();
138 p2.SetCoord(p1.X() - L*d.X() - H*d.Y(), p1.Y() - L*d.Y() + H*d.X());
140 p2.SetCoord(p1.X() - L*d.X() + H*d.Y(), p1.Y() - L*d.Y() - H*d.X());
144 Draw_Bounds = Standard_True;
147 // Draw the curvature Radius
148 if (dispcurvradius && (C2d.GetType() != GeomAbs_Line)) {
150 Standard_Integer intrv, nbintv = C2d.NbIntervals(GeomAbs_CN);
151 TColStd_Array1OfReal TI(1,nbintv+1);
152 C2d.Intervals(TI,GeomAbs_CN);
153 Standard_Real Resolution = 1.0e-9, Curvature;
154 Geom2dLProp_CLProps2d LProp(curv, 2, Resolution);
157 for (intrv = 1; intrv <= nbintv; intrv++) {
158 Standard_Real t = TI(intrv);
159 Standard_Real step = (TI(intrv+1) - t) / GetDiscretisation();
160 Standard_Real LRad, ratio;
161 for (ii = 1; ii <= GetDiscretisation(); ii++) {
162 LProp.SetParameter(t);
163 if (LProp.IsTangentDefined()) {
164 Curvature = Abs(LProp.Curvature());
165 if ( Curvature > Resolution) {
169 ratio = ( ( LRad > radiusmax) ? radiusmax/LRad : 1 );
170 ratio *= radiusratio;
171 LProp.CentreOfCurvature(P2);
173 dis.DrawTo(P1.Translated(ratio*V));
184 //=======================================================================
187 //=======================================================================
188 Handle(Draw_Drawable3D) DrawTrSurf_Curve2d::Copy()const
190 Handle(DrawTrSurf_Curve2d) DC = new DrawTrSurf_Curve2d
191 (Handle(Geom2d_Curve)::DownCast(curv->Copy()),
193 GetDiscretisation());
199 //=======================================================================
202 //=======================================================================
204 void DrawTrSurf_Curve2d::Dump(Standard_OStream& S) const
206 GeomTools_Curve2dSet::PrintCurve2d(curv,S);
210 //=======================================================================
213 //=======================================================================
215 void DrawTrSurf_Curve2d::Whatis(Draw_Interpretor& S)const
221 //=======================================================================
224 //=======================================================================
226 Standard_Boolean DrawTrSurf_Curve2d::Is3D() const
228 return Standard_False;