Kontron KTAM3874-pITX - Manual (Page 199)

KTD-S0057-I Page 195 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
void GLWidget::mouseMoveEvent (QMouseEvent *event)
{
int dx = event->x () - lastPos.x ();
int dy = event->y () - lastPos.y ();
if (event->buttons () & Qt::LeftButton)
{
setXRotation (xRot + 8 * dy);
setYRotation (yRot + 8 * dx);
}
else if (event->buttons () & Qt::RightButton)
{
setXRotation (xRot + 8 * dy);
setZRotation (zRot + 8 * dx);
}
lastPos = event->pos ();
}
void GLWidget::advanceGears ()
{
gear1Rot += 2 * 16;
updateGL ();
}
GLuint GLWidget::makeGear (const GLfloat *reflectance, GLdouble innerRadius,
GLdouble outerRadius, GLdouble thickness, GLdouble toothSize, GLint toothCount)
{
const double Pi = 3.14159265358979323846;
GLuint list = glGenLists (1);
glNewList (list, GL_COMPILE);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, reflectance);
GLdouble r0 = innerRadius;
GLdouble r1 = outerRadius - toothSize / 2.0;
GLdouble r2 = outerRadius + toothSize / 2.0;
GLdouble delta = (2.0 * Pi / toothCount) / 4.0;
GLdouble z = thickness / 2.0;
int i, j;
glShadeModel (GL_FLAT);
for (i = 0; i < 2; ++i)
{
GLdouble sign = (i == 0) ? +1.0 : -1.0;
glNormal3d (0.0, 0.0, sign);
glBegin (GL_QUAD_STRIP);