function _geolocation_html5_lat2px in Geolocation Field 7

Helper function converts latitude pixel value for display in image map.

2 calls to _geolocation_html5_lat2px()

geolocation_html5_field_formatter_view in modules/geolocation_html5/geolocation_html5.module

Implements hook_field_formatter_view().

geolocation_html5_field_widget_form in modules/geolocation_html5/geolocation_html5.module

Implements hook_field_widget_form().

File

modules/geolocation_html5/geolocation_html5.module, line 180

HTML5 widget and formaters for Geolocation.

Code

function _geolocation_html5_lat2px($latitude, $topLatitude, $bottomLatitude, $height) {
  return (_lat2mercator($latitude) - _lat2mercator($bottomLatitude)) / (_lat2mercator($topLatitude) - _lat2mercator($bottomLatitude)) * $height;
}