$angleZ = 15 + $nnn++ / 2;
$angleY = -30 + +($nnn++ / 3);
/* It will store transformed vertices. */
$t = array();
$l = array();
/* Transform all the vertices. */
foreach ($vertices as $v) {
$rotated = $v->rotateX($angleX)->rotateY($angleY)->rotateZ($angleZ);
$t[] = $rotated->project($img_width, $img_height, 256, 6);
$l[] = $rotated->project($img_width, $img_height, 256, 9);
}
$avgZ = array();
foreach ($faces as $index => $f) {
$avgZ["{$index}"] = ($t[$f[0]]->z + $t[$f[1]]->z + $t[$f[2]]->z + $t[$f[3]]->z) / 4.0;
}
arsort($avgZ);
foreach ($avgZ as $index => $z) {
$f = $faces[$index];
$points = array($l[$f[0]]->x, $l[$f[0]]->y, $l[$f[1]]->x, $l[$f[1]]->y, $l[$f[2]]->x, $l[$f[2]]->y, $l[$f[3]]->x, $l[$f[3]]->y);
CLI\Graphics::line($l[$f[0]]->x, $l[$f[0]]->y, $l[$f[1]]->x, $l[$f[1]]->y, '.');
CLI\Graphics::line($l[$f[1]]->x, $l[$f[1]]->y, $l[$f[2]]->x, $l[$f[2]]->y, '.');
CLI\Graphics::line($l[$f[2]]->x, $l[$f[2]]->y, $l[$f[3]]->x, $l[$f[3]]->y, '.');
CLI\Graphics::line($l[$f[3]]->x, $l[$f[3]]->y, $l[$f[0]]->x, $l[$f[0]]->y, '.');
$points = array($t[$f[0]]->x, $t[$f[0]]->y, $t[$f[1]]->x, $t[$f[1]]->y, $t[$f[2]]->x, $t[$f[2]]->y, $t[$f[3]]->x, $t[$f[3]]->y);
CLI\Graphics::line($t[$f[0]]->x, $t[$f[0]]->y, $t[$f[1]]->x, $t[$f[1]]->y);
CLI\Graphics::line($t[$f[1]]->x, $t[$f[1]]->y, $t[$f[2]]->x, $t[$f[2]]->y);
CLI\Graphics::line($t[$f[2]]->x, $t[$f[2]]->y, $t[$f[3]]->x, $t[$f[3]]->y);
CLI\Graphics::line($t[$f[3]]->x, $t[$f[3]]->y, $t[$f[0]]->x, $t[$f[0]]->y);
}
usleep(50000);
}
