Kontron KTAM3874-pITX - Manual (Page 198)

KTD-S0057-I Page 194 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
glLightfv (GL_LIGHT0, GL_POSITION, lightPos);
glEnable (GL_LIGHTING);
glEnable (GL_LIGHT0);
glEnable (GL_DEPTH_TEST);
gear1 = makeGear (reflectance1, 1.0, 4.0, 1.0, 0.7, 20);
gear2 = makeGear (reflectance2, 0.5, 2.0, 2.0, 0.7, 10);
gear3 = makeGear (reflectance3, 1.3, 2.0, 0.5, 0.7, 10);
glEnable (GL_NORMALIZE);
glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
}
void GLWidget::paintGL ()
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix ();
glRotated (xRot / 16.0, 1.0, 0.0, 0.0);
glRotated (yRot / 16.0, 0.0, 1.0, 0.0);
glRotated (zRot / 16.0, 0.0, 0.0, 1.0);
drawGear (gear1, -3.0, -2.0, 0.0, gear1Rot / 16.0);
drawGear (gear2, +3.1, -2.0, 0.0, -2.0 * (gear1Rot / 16.0) - 9.0);
glRotated (+90.0, 1.0, 0.0, 0.0);
drawGear (gear3, -3.1, -1.8, -2.2, +2.0 * (gear1Rot / 16.0) - 2.0);
glPopMatrix ();
}
void GLWidget::resizeGL (int width, int height)
{
int side = qMin (width, height);
glViewport ((width - side) / 2, (height - side) / 2, side, side);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glFrustum (-1.0, +1.0, -1.0, 1.0, 5.0, 60.0);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glTranslated (0.0, 0.0, -40.0);
}
void GLWidget::mousePressEvent (QMouseEvent *event)
{
lastPos = event->pos ();
}