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1 | // Created on: 1991-07-16 |
2 | // Created by: Christophe MARION |
3 | // Copyright (c) 1991-1999 Matra Datavision |
4 | // Copyright (c) 1999-2012 OPEN CASCADE SAS |
5 | // |
6 | // The content of this file is subject to the Open CASCADE Technology Public |
7 | // License Version 6.5 (the "License"). You may not use the content of this file |
8 | // except in compliance with the License. Please obtain a copy of the License |
9 | // at http://www.opencascade.org and read it completely before using this file. |
10 | // |
11 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
12 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
13 | // |
14 | // The Original Code and all software distributed under the License is |
15 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
16 | // Initial Developer hereby disclaims all such warranties, including without |
17 | // limitation, any warranties of merchantability, fitness for a particular |
18 | // purpose or non-infringement. Please see the License for the specific terms |
19 | // and conditions governing the rights and limitations under the License. |
20 | |
7fd59977 |
21 | |
22 | |
23 | #include <DrawTrSurf_Drawable.ixx> |
24 | #include <GCPnts_UniformDeflection.hxx> |
25 | #include <gp_Pnt.hxx> |
26 | #include <gp_Pnt2d.hxx> |
27 | #include <TColStd_Array1OfReal.hxx> |
28 | #include <GeomAdaptor_Curve.hxx> |
29 | #include <Geom_BezierCurve.hxx> |
30 | #include <Geom_BSplineCurve.hxx> |
31 | #include <Precision.hxx> |
32 | |
33 | |
34 | //======================================================================= |
35 | //function : DrawTrSurf_Drawable |
36 | //purpose : initialise the discretisation |
37 | //======================================================================= |
38 | |
39 | DrawTrSurf_Drawable::DrawTrSurf_Drawable ( |
40 | |
41 | const Standard_Integer discret, |
42 | const Standard_Real deflection, |
43 | const Standard_Integer DrawMode ) : |
44 | myDrawMode (DrawMode), |
45 | myDiscret(discret), |
46 | myDeflection(deflection) |
47 | { |
48 | } |
49 | |
50 | //======================================================================= |
51 | //function : DrawCurve2dOn |
52 | //purpose : draw a 2D curve |
53 | //======================================================================= |
54 | |
55 | void DrawTrSurf_Drawable::DrawCurve2dOn (Adaptor2d_Curve2d& C, |
56 | Draw_Display& aDisplay) const |
57 | { |
58 | gp_Pnt P; |
59 | |
60 | gp_Pnt2d aPoint2d, |
61 | *aPoint2dPtr ; |
62 | if (myDrawMode == 1) { |
63 | Standard_Real Fleche = myDeflection/aDisplay.Zoom(); |
64 | GCPnts_UniformDeflection LineVu(C,Fleche); |
65 | if (LineVu.IsDone()) { |
66 | P = LineVu.Value(1) ; |
67 | aPoint2dPtr = (gp_Pnt2d *) &P ; |
68 | aDisplay.MoveTo(*aPoint2dPtr); |
69 | for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++) { |
70 | P = LineVu.Value(i) ; |
71 | aPoint2dPtr = (gp_Pnt2d *) &P ; |
72 | aDisplay.DrawTo(*aPoint2dPtr); |
73 | } |
74 | } |
75 | } |
76 | else { |
77 | Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN); |
78 | TColStd_Array1OfReal TI(1,nbintv+1); |
79 | C.Intervals(TI,GeomAbs_CN); |
80 | C.D0(C.FirstParameter(),aPoint2d); |
81 | aDisplay.MoveTo(aPoint2d); |
82 | for (intrv = 1; intrv <= nbintv; intrv++) { |
83 | if (C.GetType() != GeomAbs_Line) { |
84 | Standard_Real t = TI(intrv); |
85 | Standard_Real step = (TI(intrv+1) - t) / myDiscret; |
86 | for (Standard_Integer i = 1; i < myDiscret; i++) { |
87 | t += step; |
88 | C.D0(t,aPoint2d); |
89 | aDisplay.DrawTo(aPoint2d); |
90 | } |
91 | } |
92 | C.D0(TI(intrv+1),aPoint2d); |
93 | aDisplay.DrawTo(aPoint2d); |
94 | } |
95 | } |
96 | } |
97 | |
98 | //======================================================================= |
99 | //static function : PlotCurve |
100 | //purpose : draw a 3D curve |
101 | //======================================================================= |
102 | static void PlotCurve (Draw_Display& aDisplay, |
103 | const Adaptor3d_Curve& C, |
104 | Standard_Real& theFirstParam, |
105 | Standard_Real theHalfStep, |
106 | const gp_Pnt& theFirstPnt, |
107 | const gp_Pnt& theLastPnt) |
108 | { |
109 | Standard_Real IsoRatio = 1.001; |
110 | gp_Pnt Pm; |
111 | |
112 | C.D0 (theFirstParam + theHalfStep, Pm); |
113 | |
114 | Standard_Real dfLength = theFirstPnt.Distance(theLastPnt); |
115 | if (dfLength < Precision::Confusion() || |
116 | Pm.Distance(theFirstPnt) + Pm.Distance(theLastPnt) <= IsoRatio*dfLength) { |
117 | aDisplay.DrawTo (theLastPnt); |
118 | } else { |
119 | PlotCurve (aDisplay, C, theFirstParam, theHalfStep/2., theFirstPnt, Pm); |
120 | Standard_Real aLocalF = theFirstParam + theHalfStep; |
121 | PlotCurve (aDisplay, C, aLocalF, theHalfStep/2., Pm, theLastPnt); |
122 | } |
123 | } |
124 | //======================================================================= |
125 | //function : DrawCurveOn |
126 | //purpose : draw a 3D curve |
127 | //======================================================================= |
128 | |
129 | void DrawTrSurf_Drawable::DrawCurveOn (Adaptor3d_Curve& C, |
32ca7a51 |
130 | Draw_Display& aDisplay) const |
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131 | { |
132 | gp_Pnt P; |
32ca7a51 |
133 | if (myDrawMode == 1) |
134 | { |
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135 | Standard_Real Fleche = myDeflection/aDisplay.Zoom(); |
136 | GCPnts_UniformDeflection LineVu(C,Fleche); |
32ca7a51 |
137 | if (LineVu.IsDone()) |
138 | { |
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139 | aDisplay.MoveTo(LineVu.Value(1)); |
32ca7a51 |
140 | for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++) |
141 | { |
142 | aDisplay.DrawTo(LineVu.Value(i)); |
7fd59977 |
143 | } |
32ca7a51 |
144 | } |
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145 | } |
32ca7a51 |
146 | else |
147 | { |
148 | Standard_Integer j; |
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149 | Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN); |
150 | TColStd_Array1OfReal TI(1,nbintv+1); |
151 | C.Intervals(TI,GeomAbs_CN); |
152 | C.D0(C.FirstParameter(),P); |
153 | aDisplay.MoveTo(P); |
154 | GeomAbs_CurveType CurvType = C.GetType(); |
155 | gp_Pnt aPPnt=P, aNPnt; |
156 | |
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157 | for (intrv = 1; intrv <= nbintv; intrv++) |
158 | { |
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159 | Standard_Real t = TI(intrv); |
160 | Standard_Real step = (TI(intrv+1) - t) / myDiscret; |
161 | |
32ca7a51 |
162 | switch (CurvType) |
163 | { |
164 | case GeomAbs_Line: |
165 | break; |
166 | case GeomAbs_Circle: |
167 | case GeomAbs_Ellipse: |
168 | for (j = 1; j < myDiscret; j++) |
169 | { |
170 | t += step; |
171 | C.D0(t,P); |
172 | aDisplay.DrawTo(P); |
173 | } |
174 | break; |
175 | case GeomAbs_Parabola: |
176 | case GeomAbs_Hyperbola: |
177 | case GeomAbs_BezierCurve: |
178 | case GeomAbs_BSplineCurve: |
179 | case GeomAbs_OtherCurve: |
180 | const Standard_Integer nIter = myDiscret/2; |
181 | for (j = 1; j < nIter; j++) |
182 | { |
183 | const Standard_Real t1 = t+step*2.; |
184 | C.D0 (t1, aNPnt); |
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185 | PlotCurve (aDisplay, C, t, step, aPPnt, aNPnt); |
32ca7a51 |
186 | aPPnt = aNPnt; |
187 | t = t1; |
188 | } |
189 | |
190 | break; |
7fd59977 |
191 | } |
192 | |
193 | C.D0(TI(intrv+1),P); |
32ca7a51 |
194 | PlotCurve (aDisplay, C, t, step, aPPnt, P); |
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195 | aDisplay.DrawTo(P); |
196 | } |
197 | } |
198 | } |
199 | |
200 | |
201 | //======================================================================= |
202 | //function : DrawIsoCurveOn |
203 | //purpose : |
204 | //======================================================================= |
205 | |
206 | void DrawTrSurf_Drawable::DrawIsoCurveOn(Adaptor3d_IsoCurve& C, |
207 | const GeomAbs_IsoType T, |
208 | const Standard_Real P, |
209 | const Standard_Real F, |
210 | const Standard_Real L, |
211 | Draw_Display& dis) const |
212 | { |
213 | C.Load(T,P,F,L); |
214 | if ((C.GetType() == GeomAbs_BezierCurve) || |
215 | (C.GetType() == GeomAbs_BSplineCurve)) { |
216 | GeomAdaptor_Curve GC; |
217 | if (C.GetType() == GeomAbs_BezierCurve) |
218 | GC.Load(C.Bezier(),F,L); |
219 | else |
220 | GC.Load(C.BSpline(),F,L); |
221 | |
222 | DrawCurveOn(GC,dis); |
223 | } |
224 | else |
225 | DrawCurveOn(C,dis); |
226 | |
227 | } |