void keyPressEvent(QKeyEvent*);

 1 void MyGlWindow::keyPressEvent(QKeyEvent * e)
 2 {
 3     switch (e->key())
 4     {
 5     case Qt::Key::Key_W:
 6         camera.moveForward();
 7         break;
 8     case Qt::Key::Key_S:
 9         camera.moveBackward();
10         break;
11     case Qt::Key::Key_A:
12         camera.strafeLeft();
13         break;
14     case Qt::Key::Key_D:
15         camera.strafeRight();
16         break;
17     case Qt::Key::Key_Q:
18         camera.moveUp();
19         break;
20     case Qt::Key::Key_E:
21         camera.moveDown();
22         break;
23
24     default:
25         break;
26     }
27     repaint();
28 }

1     void moveForward();
2     void moveBackward();
3     void strafeLeft();
4     void strafeRight();
5     void moveUp();
6     void moveDown();
7
8     float moveSpeed = 0.1f;

 1 void Camera::moveForward()
 2 {
 3     position += viewDirection * moveSpeed;
 4 }
 5
 6 void Camera::moveBackward()
 7 {
 8     position -= viewDirection * moveSpeed;
 9 }
10
11 void Camera::strafeLeft()
12 {
13     glm::vec3 pitchAxis = glm::cross(viewDirection, UP);
14     position += pitchAxis * moveSpeed;
15 }
16
17 void Camera::strafeRight()
18 {
19     glm::vec3 pitchAxis = glm::cross(viewDirection, UP);
20     position -= pitchAxis * moveSpeed;
21
22 }
23
24 void Camera::moveUp()
25 {
26     position += UP * moveSpeed;
27 }
28
29 void Camera::moveDown()
30 {
31     position -= UP * moveSpeed;
32 }