public function Collection::equals in geoPHP 7
Same name and namespace in other branches
- 8 geoPHP/lib/geometry/Collection.class.php \Collection::equals()
Overrides Geometry::equals
File
- geoPHP/
lib/ geometry/ Collection.class.php, line 221
Class
- Collection
- Collection: Abstract class for compound geometries
Code
public function equals($geometry) {
if ($this
->geos()) {
return $this
->geos()
->equals($geometry
->geos());
}
// To test for equality we check to make sure that there is a matching point
// in the other geometry for every point in this geometry.
// This is slightly more strict than the standard, which
// uses Within(A,B) = true and Within(B,A) = true
// @@TODO: Eventually we could fix this by using some sort of simplification
// method that strips redundant vertices (that are all in a row)
$this_points = $this
->getPoints();
$other_points = $geometry
->getPoints();
// First do a check to make sure they have the same number of vertices
if (count($this_points) != count($other_points)) {
return FALSE;
}
foreach ($this_points as $point) {
$found_match = FALSE;
foreach ($other_points as $key => $test_point) {
if ($point
->equals($test_point)) {
$found_match = TRUE;
unset($other_points[$key]);
break;
}
}
if (!$found_match) {
return FALSE;
}
}
// All points match, return TRUE
return TRUE;
}