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0031709: Draw Harness - move methods ViewerTest::ParseOnOff()/ParseColor() to package...
[occt.git] / src / Draw / Draw_Display.cxx
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b311480e 1// Created on: 1991-07-15
2// Created by: Arnaud BOUZY
3// Copyright (c) 1991-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
42cf5bc1 17
18#include <Draw_Color.hxx>
19#include <Draw_Display.hxx>
7fd59977 20#include <ElCLib.hxx>
42cf5bc1 21#include <gp_Circ.hxx>
22#include <gp_Circ2d.hxx>
23#include <gp_Pnt.hxx>
24#include <gp_Pnt2d.hxx>
7fd59977 25
26extern Standard_Boolean Draw_Bounds;
27
28
29//=======================================================================
30//function : DrawMarker
31//purpose :
32//=======================================================================
33
34void Draw_Display::DrawMarker (const gp_Pnt& pt,
35 const Draw_MarkerShape S,
36 const Standard_Integer Size)
37{
38 gp_Pnt2d p;
39 Project(pt,p);
40 DrawMarker(p,S,Size);
41}
42
43//=======================================================================
44//function : DrawMarker
45//purpose :
46//=======================================================================
47
48void Draw_Display::DrawMarker (const gp_Pnt2d& pt,
49 const Draw_MarkerShape S,
50 const Standard_Integer ISize)
51{
52 Draw_Bounds = Standard_False;
53
54 gp_Pnt2d p1 = pt;
55 gp_Pnt2d p2 = p1;
56 gp_Circ2d C;
57 Standard_Real Size = ((Standard_Real) ISize) / Zoom();
58
59 switch (S) {
60
61 case Draw_Square :
62 p1.Translate(gp_Vec2d(-Size,-Size));
63 p2.Translate(gp_Vec2d( Size,-Size));
64 Draw(p1,p2);
65 p1.Translate(gp_Vec2d(2*Size,2*Size));
66 Draw(p1,p2);
67 p2.Translate(gp_Vec2d(-2*Size,2*Size));
68 Draw(p1,p2);
69 p1.Translate(gp_Vec2d(-2*Size,-2*Size));
70 Draw(p1,p2);
71 break;
72
73 case Draw_Losange :
74 p1.Translate(gp_Vec2d(-Size,0));
75 p2.Translate(gp_Vec2d( 0,Size));
76 Draw(p1,p2);
77 p1.Translate(gp_Vec2d(2*Size,0));
78 Draw(p1,p2);
79 p2.Translate(gp_Vec2d(0,-2*Size));
80 Draw(p1,p2);
81 p1.Translate(gp_Vec2d(-2*Size,0));
82 Draw(p1,p2);
83 break;
84
85 case Draw_X :
86 p1.Translate(gp_Vec2d(-Size,-Size));
87 p2.Translate(gp_Vec2d( Size,Size));
88 Draw(p1,p2);
89 p1.Translate(gp_Vec2d(2*Size,0));
90 p2.Translate(gp_Vec2d(-2*Size,0));
91 Draw(p1,p2);
92 break;
93
94 case Draw_Plus :
95 p1.Translate(gp_Vec2d(-Size,0));
96 p2.Translate(gp_Vec2d( Size,0));
97 Draw(p1,p2);
98 p1.Translate(gp_Vec2d(Size,Size));
99 p2.Translate(gp_Vec2d(-Size,-Size));
100 Draw(p1,p2);
101 break;
102
103 case Draw_Circle :
104// gp_Circ2d C;
105 C.SetRadius(ISize);
106 C.SetLocation(pt);
c6541a0c 107 Draw(C, 0, 2*M_PI, Standard_False);
7fd59977 108 break;
7fd59977 109 default:
110 break;
7fd59977 111
112 }
113 Draw_Bounds = Standard_True;
114 MoveTo(pt);
115}
116
117//=======================================================================
118//function : DrawMarker
119//purpose :
120//=======================================================================
121
122void Draw_Display::DrawMarker (const gp_Pnt& pt,
123 const Draw_MarkerShape S,
124 const Standard_Real Size)
125{
126 gp_Pnt2d p;
127 Project(pt,p);
128 DrawMarker(p,S,Size);
129}
130
131//=======================================================================
132//function : DrawMarker
133//purpose :
134//=======================================================================
135
136void Draw_Display::DrawMarker (const gp_Pnt2d& pt,
137 const Draw_MarkerShape S,
138 const Standard_Real R)
139{
140 switch (S) {
141 case Draw_Square :
142 case Draw_Losange :
143 case Draw_X :
144 case Draw_Plus :
145 case Draw_Circle :
146 {
147 Standard_Integer I = (Standard_Integer ) R;
148 if(!I) return;
149 DrawMarker(pt, S, I);
150 break;
151 }
152 case Draw_CircleZoom :
153 if(R == 0.0) return;
154 gp_Circ2d C;
155 C.SetRadius(R);
156 C.SetLocation(pt);
157 // if the circus is too small, a "plus" is drawn to mark the point
158 Standard_Boolean b = (R * Zoom()) > 2;
159 if(b)
c6541a0c 160 Draw(C, 0, 2*M_PI);
7fd59977 161 else
162 DrawMarker(pt, Draw_Plus);
163 }
164 Draw_Bounds = Standard_True;
165 MoveTo(pt);
166}
167
168#define MAXPNT 200
169#define DEFLECTION 5
170
171//=======================================================================
172//function : Draw
173//purpose :
174//=======================================================================
175
176void Draw_Display::Draw(const gp_Circ& C, const Standard_Real A1,const Standard_Real A3,
177 const Standard_Boolean ModifyWithZoom)
178{
179 Standard_Real A2 = A3;
c6541a0c 180 while (A2 < A1) A2 += 2*M_PI;
7fd59977 181
182 Standard_Real angle = DEFLECTION / (C.Radius() * Zoom());
183 Standard_Integer n = (Standard_Integer )( (A2 - A1) / angle);
184 if (n > MAXPNT) {
185 angle = (A2 - A1) / MAXPNT;
186 n = MAXPNT;
187 }
188 if (n <= 6) {
189 angle = (A2 - A1) / 6;
190 n = 6;
191 }
192 Standard_Real c = 2*Cos(angle);
193
194 gp_Circ Cloc(C);
195 if(!ModifyWithZoom) {
196 Standard_Integer ISize = (Standard_Integer )( Cloc.Radius() / Zoom());
197 Cloc.SetRadius(ISize);
198 }
199
200 gp_Pnt PC = Cloc.Location();
201 gp_Pnt P = ElCLib::Value(A1,Cloc);
202 MoveTo(P);
203 gp_Vec V1(PC,P);
204 P = ElCLib::Value(A1+angle,Cloc);
205 gp_Vec V2(PC,P);
206 DrawTo(P);
207 gp_Vec V;
208
209 for (Standard_Integer i = 2; i < n; i++) {
210 V = c * V2 - V1;
211 V1 = V2;
212 V2 = V;
213 DrawTo(PC.Translated(V));
214 }
215
216 P = ElCLib::Value(A2,Cloc);
217 DrawTo(P);
218}
219
220//=======================================================================
221//function : Draw
222//purpose :
223//=======================================================================
224
225void Draw_Display::Draw(const gp_Circ2d& C, const Standard_Real A1, const Standard_Real A3,
226 const Standard_Boolean ModifyWithZoom)
227{
228 Standard_Real A2 = A3;
c6541a0c 229 while (A2 < A1) A2 += 2*M_PI;
7fd59977 230
231 Standard_Real angle = DEFLECTION / (C.Radius() * Zoom());
232 Standard_Integer n = (Standard_Integer )( (A2 - A1) / angle);
233 if (n > MAXPNT) {
234 angle = (A2 - A1) / MAXPNT;
235 n = MAXPNT;
236 }
237 else if (n <= 6) {
238 angle = (A2 - A1) / 6;
239 n = 6;
240 }
241 Standard_Real c = 2*Cos(angle);
242
243 gp_Circ2d Cloc(C);
244 if(!ModifyWithZoom) {// the effet of zoom is cancelled to follow
245 Standard_Real Size = Cloc.Radius() / Zoom();
246 Cloc.SetRadius(Size);
247 }
248
249 gp_Pnt2d PC = Cloc.Location();
250 gp_Pnt2d P = ElCLib::Value(A1,Cloc);
251 MoveTo(P);
252 gp_Vec2d V1(PC,P);
253 P = ElCLib::Value(A1+angle,Cloc);
254 gp_Vec2d V2(PC,P);
255 DrawTo(P);
256 gp_Vec2d V;
257
258 for (Standard_Integer i = 2; i < n; i++) {
259 V = c * V2 - V1;
260 V1 = V2;
261 V2 = V;
262 DrawTo(PC.Translated(V));
263 }
264
265 P = ElCLib::Value(A2,Cloc);
266 DrawTo(P);
267}
268
269
270//=======================================================================
271//function : Project
272//purpose :
273//=======================================================================
274
275gp_Pnt2d Draw_Display::Project(const gp_Pnt& p) const
276{
277 gp_Pnt2d pt;
278 Project(p,pt);
279 return pt;
280}
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