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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): David Salinas
*
* Copyright (C) 2014 INRIA Sophia Antipolis-Mediterranee (France)
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "Viewer.h"
#include "utils/UI_utils.h"
Viewer::Viewer(QWidget* parent) : QGLViewer(QGLFormat(QGL::SampleBuffers), parent), instructor(0), theta(0), phi(0) { }
void Viewer::set_instructor(Viewer_instructor* instructor_) {
instructor = instructor_;
}
void Viewer::show_entire_scene() {
this->showEntireScene();
}
void Viewer::draw() {
instructor->give_instructions();
}
void Viewer::set_bounding_box(const Point_3 & lower_left, const Point_3 & upper_right) {
this->camera()->setSceneBoundingBox(qglviewer::Vec(lower_left[0], lower_left[1], lower_left[2]),
qglviewer::Vec(upper_right[0], upper_right[1], upper_right[2]));
}
void Viewer::update_GL() {
this->updateGL();
}
void Viewer::init_scene() {
this->setBackgroundColor(Qt::white);
::glEnable(GL_LINE_SMOOTH);
init_light();
}
void Viewer::init_light() {
::glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
}
void Viewer::set_light() {
if (theta >= 0 && phi >= 0) {
const GLfloat pos[4] = {static_cast<float> (sin(phi) * cos(theta)),
static_cast<float> (sin(phi) * sin(theta)),
static_cast<float> (cos(phi)), 0.};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
}
}
void Viewer::set_light_direction(double theta_, double phi_) {
theta = theta_;
phi = phi_;
}
/**
* set the light in the direction of the observer
*/
void Viewer::set_light_direction() {
theta = -1;
phi = -1;
}
void Viewer::postSelection(const QPoint& point) {
bool found;
auto vec = this->camera()->pointUnderPixel(point, found);
if (found) {
Point_3 position(vec[0], vec[1], vec[2]);
emit(click(position));
}
}
////////////////////////
// draw
////////////////////////
void Viewer::set_size_point(double size_points) {
::glPointSize(size_points);
}
void Viewer::draw_point(const Point_3& p, const Color& color, double size_points) {
::glColor3f(color.r, color.g, color.b);
::glDisable(GL_LIGHTING);
::glEnable(GL_POINT_SMOOTH);
::glPointSize(size_points);
::glBegin(GL_POINTS);
::glVertex3d(p.x(), p.y(), p.z());
::glEnd();
::glDisable(GL_POINT_SMOOTH);
}
void Viewer::begin_draw_points(double size, bool light) {
light ? glEnable(GL_LIGHTING) : glDisable(GL_LIGHTING);
::glEnable(GL_POINT_SMOOTH);
::glPointSize(size);
::glBegin(GL_POINTS);
}
void Viewer::set_color(const Color& color) {
::glColor3f(color.r, color.g, color.b);
}
void Viewer::draw_points(const Point_3 & point) {
::glVertex3d(point.x(), point.y(), point.z());
}
void Viewer::end_draw_points() {
::glEnd();
::glDisable(GL_POINT_SMOOTH);
}
void Viewer::draw_edge(const Point_3 &a, const Point_3 &b, const Color& color, double size) {
::glColor3f(color.r, color.g, color.b);
::glPointSize(3.0);
::glLineWidth(size);
::glBegin(GL_LINES);
::glVertex3f(a.x(), a.y(), a.z());
::glVertex3f(b.x(), b.y(), b.z());
::glEnd();
}
void Viewer::begin_draw_edges(double size, bool light) {
::glLineWidth(size);
::glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
::glEnable(GL_POLYGON_OFFSET_LINE);
::glPolygonOffset(3.0f, -3.0f);
light ? glEnable(GL_LIGHTING) : glDisable(GL_LIGHTING);
::glBegin(GL_LINES);
}
void Viewer::draw_edges(const Point_3 &a, const Point_3 &b) {
::glVertex3f(a.x(), a.y(), a.z());
::glVertex3f(b.x(), b.y(), b.z());
}
void Viewer::end_draw_edges() {
::glEnd();
}
void Viewer::begin_draw_triangles(double size, bool light, bool transparent) {
if (transparent) {
::glEnable(GL_BLEND);
::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
::glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
::glEnable(GL_POLYGON_OFFSET_FILL);
::glPolygonOffset(3.0f, -3.0f);
light ? glEnable(GL_LIGHTING) : glDisable(GL_LIGHTING);
::glBegin(GL_TRIANGLES);
}
void Viewer::draw_triangles(const Point_3& p1, const Point_3& p2, const Point_3& p3) {
if (!CGAL::collinear(p1, p2, p3)) {
auto triangle_normal = CGAL::unit_normal(p1, p2, p3);
::glNormal3d(triangle_normal.x(), triangle_normal.y(), triangle_normal.z());
::glVertex3d(p1.x(), p1.y(), p1.z());
::glVertex3d(p2.x(), p2.y(), p2.z());
::glVertex3d(p3.x(), p3.y(), p3.z());
}
}
void Viewer::end_draw_triangles() {
::glEnd();
}
#include "Viewer.moc"
|
