1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/****************************************************************************
Copyright (C) 2002-2007 Gilles Debunne (Gilles.Debunne@imag.fr)
This file is part of the QGLViewer library.
Version 2.2.6-3, released on August 28, 2007.
http://artis.imag.fr/Members/Gilles.Debunne/QGLViewer
libQGLViewer is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libQGLViewer is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with libQGLViewer; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
#include "interface.h"
#include <math.h>
// Constructor must call the base class constructor.
#if QT_VERSION < 0x040000
Viewer::Viewer(QWidget *parent, const char *name)
: QGLViewer(parent, name)
#else
Viewer::Viewer(QWidget *parent)
: QGLViewer(parent)
#endif
{
restoreStateFromFile();
help();
}
void Viewer::draw()
{
// Draws a spiral
const float nbSteps = 200.0;
glBegin(GL_QUAD_STRIP);
for (float i=0; i<nbSteps; ++i)
{
float ratio = i/nbSteps;
float angle = 21.0*ratio;
float c = cos(angle);
float s = sin(angle);
float r1 = 1.0 - 0.8*ratio;
float r2 = 0.8 - 0.8*ratio;
float alt = ratio - 0.5;
const float nor = .5;
const float up = sqrt(1.0-nor*nor);
glColor3f(1-ratio, .2 , ratio);
glNormal3f(nor*c, up, nor*s);
glVertex3f(r1*c, alt, r1*s);
glVertex3f(r2*c, alt+0.05, r2*s);
}
glEnd();
}
QString Viewer::helpString() const
{
QString text("<h2>I n t e r f a c e</h2>");
text += "A GUI can be added to a QGLViewer widget using Qt's <i>designer</i>. Signals and slots ";
text += "can then be connected to and from the viewer.<br><br>";
text += "You can install the QGLViewer designer plugin to make the QGLViewer appear as a ";
text += "standard Qt widget in the designers' widget tabs. See installation pages for details.<br><br>";
text += "An other option (with Qt version 2 or 3) is to add a <i>Custom Widget</i> in designer. ";
text += "All the available QGLViewer's signals and slots are listed in a <code>qglviewer.cw</code> ";
text += "(custom widget) file, located in the QGLViewer <code>include</code> directory.";
return text;
}
|
