private function _create_translation(Vector $vec)
{
$vtcX = new Vector(['dest' => new Vertex(array('x' => 1.0, 'y' => 0.0, 'z' => 0.0, 'w' => 0.0))]);
$vtcY = new Vector(['dest' => new Vertex(array('x' => 0.0, 'y' => 1.0, 'z' => 0.0, 'w' => 0.0))]);
$vtcZ = new Vector(['dest' => new Vertex(array('x' => 0.0, 'y' => 0.0, 'z' => 1.0, 'w' => 0.0))]);
$vtx0 = new Vertex(array('x' => $vec->getX(), 'y' => $vec->getY(), 'z' => $vec->getZ(), 'w' => 1.0));
$this->_M = array('vtcX' => $vtcX, 'vtcY' => $vtcY, 'vtcZ' => $vtcZ, 'vtx0' => $vtx0);
}
public function sub(Vector $rhs)
{
return new Vector(array('dest' => new Vertex(array('x' => $this->_x - $rhs->getX(), 'y' => $this->_y - $rhs->getY(), 'z' => $this->_z - $rhs->getZ()))));
}
public function sub(Vector $rhs)
{
$NewVertex = new Vertex(array('x' => $this->getX() - $rhs->getX(), 'y' => $this->getY() - $rhs->getY(), 'z' => $this->getZ() - $rhs->getZ()));
$newVec = new Vector(array('dest' => $NewVertex));
return $newVec;
}
private function _construct_translation(Vector $vtc)
{
$this->_tab[0] = array(1, 0, 0, $vtc->getX());
$this->_tab[1] = array(0, 1, 0, $vtc->getY());
$this->_tab[2] = array(0, 0, 1, $vtc->getZ());
$this->_tab[3] = array(0, 0, 0, 1);
if (self::$verbose) {
echo "Matrix TRANSLATION preset instance constructed." . PHP_EOL;
}
}
function crossProduct(Vector $rsh)
{
$x = $this->getY() * $rsh->getZ() - $this->getZ() * $rsh->getY();
$y = $this->getZ() * $rsh->getX() - $this->getX() * $rsh->getZ();
$z = $this->getX() * $rsh->getY() - $this->getY() * $rsh->getX();
$vert = new Vertex(['x' => $x, 'y' => $y, 'z' => $z, 'w' => 0]);
return new Vector(['dest' => $vert]);
}