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0022048: Visualization, AIS_InteractiveContext - single object selection should alway...
[occt.git] / src / DrawTrSurf / DrawTrSurf_Curve2d.cxx
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b311480e 1// Copyright (c) 1995-1999 Matra Datavision
973c2be1 2// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 3//
973c2be1 4// This file is part of Open CASCADE Technology software library.
b311480e 5//
d5f74e42 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
973c2be1 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.
b311480e 11//
973c2be1 12// Alternatively, this file may be used under the terms of Open CASCADE
13// commercial license or contractual agreement.
b311480e 14
42cf5bc1 15
16#include <Draw_Color.hxx>
17#include <Draw_Display.hxx>
18#include <Draw_Drawable3D.hxx>
19#include <DrawTrSurf_Curve2d.hxx>
7fd59977 20#include <Geom2d_Curve.hxx>
42cf5bc1 21#include <Geom2d_Hyperbola.hxx>
7fd59977 22#include <Geom2d_Line.hxx>
42cf5bc1 23#include <Geom2d_OffsetCurve.hxx>
7fd59977 24#include <Geom2d_Parabola.hxx>
7fd59977 25#include <Geom2dAdaptor_Curve.hxx>
42cf5bc1 26#include <Geom2dLProp_CLProps2d.hxx>
7fd59977 27#include <Geom_Plane.hxx>
28#include <GeomTools_Curve2dSet.hxx>
7fd59977 29#include <gp.hxx>
7fd59977 30#include <Precision.hxx>
42cf5bc1 31#include <Standard_Type.hxx>
32#include <TColStd_Array1OfReal.hxx>
7fd59977 33
92efcf78 34IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_Curve2d,DrawTrSurf_Drawable)
35
7fd59977 36static Standard_Real DrawTrSurf_CurveLimit = 400;
37extern Standard_Boolean Draw_Bounds;
38
39//=======================================================================
40//function : DrawTrSurf_Curve2d
41//purpose :
42//=======================================================================
43
44DrawTrSurf_Curve2d::DrawTrSurf_Curve2d (const Handle(Geom2d_Curve)& C,
45 const Standard_Boolean DispOrigin) :
46 DrawTrSurf_Drawable (50)
47{
48 curv = C;
49 look = Draw_vert;
50 disporigin = DispOrigin ;
51 dispcurvradius = Standard_False;
52 radiusmax = 1.0e3;
53 radiusratio = 0.1;
54}
55
56
57//=======================================================================
58//function : DrawTrSurf_Curve2d
59//purpose :
60//=======================================================================
61
62DrawTrSurf_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)
70{
71 curv = C;
72 look = aColor;
73 disporigin = DispOrigin ;
74 dispcurvradius = DispCurvRadius;
75 radiusmax = RadiusMax;
76 radiusratio = RadiusRatio;
77}
78
79
80//=======================================================================
81//function : DrawOn
82//purpose :
83//=======================================================================
84
85void DrawTrSurf_Curve2d::DrawOn (Draw_Display& dis) const
86{
87
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);
92
93 if (firstInf || lastInf) {
94 gp_Pnt2d P1,P2;
95 Standard_Real delta = 1;
96 if (firstInf && lastInf) {
97 do {
98 delta *= 2;
99 First = - delta;
100 Last = delta;
101 curv->D0(First,P1);
102 curv->D0(Last,P2);
103 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
104 }
105 else if (firstInf) {
106 curv->D0(Last,P2);
107 do {
108 delta *= 2;
109 First = Last - delta;
110 curv->D0(First,P1);
111 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
112 }
113 else if (lastInf) {
114 curv->D0(First,P1);
115 do {
116 delta *= 2;
117 Last = First + delta;
118 curv->D0(Last,P2);
119 } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
120 }
121 }
122
123 dis.SetColor (look);
124
125 Geom2dAdaptor_Curve C2d(curv,First,Last);
126 DrawCurve2dOn (C2d, dis);
127
128// mark the origin
129 if (disporigin) {
130 Draw_Bounds = Standard_False;
131 gp_Pnt2d p1,p2;
132 gp_Vec2d v;
133 C2d.D1(Last,p1,v);
134 if (v.Magnitude() > gp::Resolution()) {
135 Standard_Real L = 20 / dis.Zoom();
136 Standard_Real H = 10 / dis.Zoom();
137 gp_Dir2d d(v);
138 p2.SetCoord(p1.X() - L*d.X() - H*d.Y(), p1.Y() - L*d.Y() + H*d.X());
139 dis.MoveTo(p2);
140 p2.SetCoord(p1.X() - L*d.X() + H*d.Y(), p1.Y() - L*d.Y() - H*d.X());
141 dis.DrawTo(p1);
142 dis.DrawTo(p2);
143 }
144 Draw_Bounds = Standard_True;
145 }
146
147// Draw the curvature Radius
148 if (dispcurvradius && (C2d.GetType() != GeomAbs_Line)) {
149 Standard_Integer ii;
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);
155 gp_Pnt2d P1, P2;
156
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) {
166 curv->D0(t, P1);
167 dis.MoveTo(P1);
168 LRad = 1./Curvature;
169 ratio = ( ( LRad > radiusmax) ? radiusmax/LRad : 1 );
170 ratio *= radiusratio;
171 LProp.CentreOfCurvature(P2);
172 gp_Vec2d V(P1, P2);
173 dis.DrawTo(P1.Translated(ratio*V));
174 }
175 }
176 t += step;
177 }
178 }
179 }
180}
181
182
183
184//=======================================================================
185//function : Copy
186//purpose :
187//=======================================================================
188Handle(Draw_Drawable3D) DrawTrSurf_Curve2d::Copy()const
189{
190 Handle(DrawTrSurf_Curve2d) DC = new DrawTrSurf_Curve2d
191 (Handle(Geom2d_Curve)::DownCast(curv->Copy()),
192 look,
193 GetDiscretisation());
194
195 return DC;
196}
197
198
199//=======================================================================
200//function : Dump
201//purpose :
202//=======================================================================
203
204void DrawTrSurf_Curve2d::Dump(Standard_OStream& S) const
205{
206 GeomTools_Curve2dSet::PrintCurve2d(curv,S);
207}
208
209
210//=======================================================================
211//function : Whatis
212//purpose :
213//=======================================================================
214
215void DrawTrSurf_Curve2d::Whatis(Draw_Interpretor& S)const
216{
217 S << "2d curve";
218}
219
220
221//=======================================================================
222//function : Is3D
223//purpose :
224//=======================================================================
225
226Standard_Boolean DrawTrSurf_Curve2d::Is3D() const
227{
228 return Standard_False;
229}
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