ElVis-Concept/glwidget.cpp at master · dillonl/ElVis-Concept · GitHub

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
#include <QtGui/QMouseEvent>
#include <QtOpenGL>
#include "glu.h"
#include "glwidget.h"

GLWidget::GLWidget(QWidget *parent) : QGLWidget(parent)
{
    setMouseTracking(true);
}

GLWidget::~GLWidget()
{

}

void GLWidget::initializeGL()
{
    glDisable(GL_TEXTURE_2D);
    glDisable(GL_DEPTH_TEST);
    glDisable(GL_COLOR_MATERIAL);
    glEnable(GL_BLEND);
    glEnable(GL_POLYGON_SMOOTH);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glClearColor(0,0,0,0);
}

void GLWidget::resizeGL(int w, int h)
{
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0, w, 0, h);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}

void GLWidget::paintGL()
{
    glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1,0,0);
    glBegin(GL_POLYGON);
    glVertex2f(0,0);
    glVertex2f(100,500);
    glVertex2f(500,100);
    glEnd();
}

void GLWidget::mousePressEvent(QMouseEvent* event)
{

}

void GLWidget::mouseMoveEvent(QMouseEvent* event)
{
    printf("%d, %d\n", event->x(), event->y());
}

void GLWidget::keyPressEvent(QKeyEvent* event)
{
    switch(event->key())
    {
    case Qt::Key_Escape:
        close();
        break;
    default:
        event->ignore();
        break;
    }
}