public function before()
{
parent::before();
// If zoom/x/y are passwed get bounding box
$zoom = $this->request->param('zoom', FALSE);
$x = $this->request->param('x', FALSE);
$y = $this->request->param('y', FALSE);
if ($zoom !== FALSE and $x !== FALSE and $y !== FALSE) {
$this->_boundingbox = Util_Tile::tileToBoundingBox($zoom, $x, $y);
$this->request->query('bbox', implode(',', $this->_boundingbox->as_array()));
}
}
/**
* Test tileToBoundingBox
*
* @return void
*/
public function test_tileToBoundingBox()
{
$bb = Util_Tile::tileToBoundingBox(0, 0, 0);
$this->assertAttributeEquals(85.05110000000001, 'north', $bb, '', 0.0002);
$this->assertAttributeEquals(-85.05110000000001, 'south', $bb, '', 0.0002);
$this->assertAttributeEquals(-180, 'west', $bb, '', 0.0002);
$this->assertAttributeEquals(180, 'east', $bb, '', 0.0002);
$bb = Util_Tile::tileToBoundingBox(1, 1, 1);
$this->assertAttributeEquals(0, 'north', $bb, '', 0.0002);
$this->assertAttributeEquals(-85.05110000000001, 'south', $bb, '', 0.0002);
$this->assertAttributeEquals(0, 'west', $bb, '', 0.0002);
$this->assertAttributeEquals(180, 'east', $bb, '', 0.0002);
$bb = Util_Tile::tileToBoundingBox(2, 2, 1);
$this->assertAttributeEquals(66.51309999999999, 'north', $bb, '', 0.0002);
$this->assertAttributeEquals(0, 'south', $bb, '', 0.0002);
$this->assertAttributeEquals(0, 'west', $bb, '', 0.0002);
$this->assertAttributeEquals(90, 'east', $bb, '', 0.0002);
$bb = Util_Tile::tileToBoundingBox(8, 13, 14);
$this->assertAttributeEquals(83.026183, 'north', $bb, '', 0.0002);
$this->assertAttributeEquals(82.853346, 'south', $bb, '', 0.0002);
$this->assertAttributeEquals(-161.71875, 'west', $bb, '', 0.0002);
$this->assertAttributeEquals(-160.3125, 'east', $bb, '', 0.0002);
}