Ktam3874/pitx software guide – Kontron KTAM3874-pITX User Manual
Page 200
KTD-S0057-I
Page 196 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
for (j = 0; j <= toothCount; ++j)
{
GLdouble angle = 2.0 * Pi * j / toothCount;
glVertex3d (r0 * cos (angle), r0 * sin (angle), sign * z);
glVertex3d (r1 * cos (angle), r1 * sin (angle), sign * z);
glVertex3d (r0 * cos (angle), r0 * sin (angle), sign * z);
glVertex3d (r1 * cos (angle + 3 * delta), r1 * sin (angle + 3 * delta), sign * z);
}
glEnd
();
glBegin
(GL_QUADS);
for (j = 0; j < toothCount; ++j)
{
GLdouble angle = 2.0 * Pi * j / toothCount;
glVertex3d (r1 * cos (angle), r1 * sin (angle), sign * z);
glVertex3d (r2 * cos (angle + delta), r2 * sin (angle + delta), sign * z);
glVertex3d (r2 * cos (angle + 2 * delta), r2 * sin (angle + 2 * delta), sign * z);
glVertex3d (r1 * cos (angle + 3 * delta), r1 * sin (angle + 3 * delta), sign * z);
}
glEnd
();
}
glBegin
(GL_QUAD_STRIP);
for (i = 0; i < toothCount; ++i)
{
for (j = 0; j < 2; ++j)
{
GLdouble angle = 2.0 * Pi * (i + (j / 2.0)) / toothCount;
GLdouble s1 = r1;
GLdouble s2 = r2;
if (j == 1)
qSwap
(s1,
s2);
glNormal3d (cos (angle), sin (angle), 0.0);
glVertex3d (s1 * cos (angle), s1 * sin (angle), +z);
glVertex3d (s1 * cos (angle), s1 * sin (angle), -z);
glNormal3d (s2 * sin (angle + delta) - s1 * sin (angle), s1 * cos (angle) - s2 * cos (angle + delta), 0.0);
glVertex3d (s2 * cos (angle + delta), s2 * sin (angle + delta), +z);
glVertex3d (s2 * cos (angle + delta), s2 * sin (angle + delta), -z);
}
}
glVertex3d (r1, 0.0, +z);
glVertex3d (r1, 0.0, -z);
glEnd
();
glShadeModel
(GL_SMOOTH);
glBegin
(GL_QUAD_STRIP);
for (i = 0; i <= toothCount; ++i)
{
GLdouble angle = i * 2.0 * Pi / toothCount;
glNormal3d (-cos (angle), -sin (angle), 0.0);
glVertex3d (r0 * cos (angle), r0 * sin (angle), +z);
glVertex3d (r0 * cos (angle), r0 * sin (angle), -z);
}