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
|
#include "fpgaviewwidget.h"
#include <QCoreApplication>
#include <QMouseEvent>
#include <math.h>
FPGAViewWidget::FPGAViewWidget(QWidget *parent)
: QOpenGLWidget(parent), m_xMove(0), m_yMove(0), m_zDistance(1.0)
{
}
FPGAViewWidget::~FPGAViewWidget() {}
QSize FPGAViewWidget::minimumSizeHint() const { return QSize(640, 480); }
QSize FPGAViewWidget::sizeHint() const { return QSize(640, 480); }
void FPGAViewWidget::setXTranslation(float t_x)
{
if (t_x != m_xMove) {
m_xMove = t_x;
update();
}
}
void FPGAViewWidget::setYTranslation(float t_y)
{
if (t_y != m_yMove) {
m_yMove = t_y;
update();
}
}
void FPGAViewWidget::setZoom(float t_z)
{
if (t_z != m_zDistance) {
m_zDistance -= t_z;
if (m_zDistance < 0.1f)
m_zDistance = 0.1f;
if (m_zDistance > 10.0f)
m_zDistance = 10.0f;
update();
}
}
void FPGAViewWidget::initializeGL()
{
initializeOpenGLFunctions();
glClearColor(1.0, 1.0, 1.0, 0.0);
}
void FPGAViewWidget::paintGL()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(m_xMove, m_yMove, -10.0);
glScalef(m_zDistance, m_zDistance, 0.0f);
// Example grid
glColor3f(0.8, 0.8, 0.8);
glBegin(GL_LINES);
for (float i = -100; i <= 100; i += 0.1) {
glVertex3f((float)i, -100.0f, 0.0f);
glVertex3f((float)i, 100.0f, 0.0f);
glVertex3f(-100.0f, (float)i, 0.0f);
glVertex3f(100.0f, (float)i, 0.0f);
}
glColor3f(0.5, 0.5, 0.5);
for (int i = -100; i <= 100; i += 1) {
glVertex3f((float)i, -100.0f, 0.0f);
glVertex3f((float)i, 100.0f, 0.0f);
glVertex3f(-100.0f, (float)i, 0.0f);
glVertex3f(100.0f, (float)i, 0.0f);
}
glEnd();
// Example triangle
glBegin(GL_TRIANGLES);
glColor3f(1.0, 0.0, 0.0);
glVertex3f(-0.5, -0.5, 0);
glColor3f(0.0, 1.0, 0.0);
glVertex3f(0.5, -0.5, 0);
glColor3f(0.0, 0.0, 1.0);
glVertex3f(0, 0.5, 0);
glEnd();
}
void FPGAViewWidget::resizeGL(int width, int height)
{
m_windowWidth = width;
m_windowHeight = height;
glViewport(0, 0, m_windowWidth, m_windowHeight);
float aspect = width * 1.0 / height;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0 * aspect, +1.0 * aspect, -1.0, +1.0, 1.0, 15.0);
glMatrixMode(GL_MODELVIEW);
}
void FPGAViewWidget::mousePressEvent(QMouseEvent *event)
{
m_lastPos = event->pos();
}
void FPGAViewWidget::mouseMoveEvent(QMouseEvent *event)
{
int dx = event->x() - m_lastPos.x();
int dy = event->y() - m_lastPos.y();
float dx_scale = dx * (1 / (float)640);
float dy_scale = -dy * (1 / (float)480);
if (event->buttons() & Qt::LeftButton) {
float xpos = m_xMove + dx_scale;
float ypos = m_yMove + dy_scale;
if (m_xMove / m_zDistance <= 100.0 && m_xMove / m_zDistance >= -100.0)
setXTranslation(xpos);
if (m_yMove / m_zDistance <= 100.0 && m_yMove / m_zDistance >= -100.0)
setYTranslation(ypos);
}
m_lastPos = event->pos();
}
void FPGAViewWidget::wheelEvent(QWheelEvent *event)
{
QPoint degree = event->angleDelta() / 8;
if (!degree.isNull()) {
QPoint step = degree / 15;
setZoom(step.y() * -0.1f);
}
}
|
