function __construct($kwargs)
{
if (array_key_exists('dest', $kwargs)) {
$dest = $kwargs['dest'];
$this->_x = $dest->getX();
$this->_y = $dest->getY();
$this->_z = $dest->getZ();
$this->_w = $dest->getW();
} else {
echo "Vector: missing dest key in constructor\n";
exit(-1);
}
if (array_key_exists('orig', $kwargs)) {
$orig = $kwargs['orig'];
$this->_x -= $orig->getX();
$this->_y -= $orig->getY();
$this->_z -= $orig->getZ();
$this->_w -= $orig->getW();
} else {
$orig = new Vertex(array('x' => 0, 'y' => 0, 'z' => 0, 'w' => 1));
$this->_w -= $orig->getW();
}
if (self::$verbose === TRUE) {
printf("Vector( x:%.02f, y:%.02f, z:%.02f, w:%.02f ) constructed\n", $this->_x, $this->_y, $this->_z, $this->_w);
}
}
public function transformVertex(Vertex $vtx)
{
$tmp_array = array();
$tmp_array[0][0] = $vtx->getX();
$tmp_array[1][0] = $vtx->getY();
$tmp_array[2][0] = $vtx->getZ();
$tmp_array[3][0] = $vtx->getW();
return new Vertex(array('x' => $this->_mult_line_row($tmp_array, 0, 0), 'y' => $this->_mult_line_row($tmp_array, 1, 0), 'z' => $this->_mult_line_row($tmp_array, 2, 0), 'color' => $vtx->getColor()));
}
private function _setVectorFromVertex(Vertex $orig, Vertex $dest)
{
$this->_x = $dest->getX() / $dest->getW() - $orig->getX() / $orig->getW();
$this->_y = $dest->getY() / $dest->getW() - $orig->getY() / $orig->getW();
$this->_z = $dest->getZ() / $dest->getW() - $orig->getZ() / $orig->getW();
}