+
+
+
+ function geometryText2Points($geometry_as_text,$fRadius)
+ {
+ $aPolyPoints = NULL;
+ if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#',$geometry_as_text,$aMatch))
+ {
+ preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
+ }
+ elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#',$geometry_as_text,$aMatch))
+ {
+ preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
+ }
+ elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#',$geometry_as_text,$aMatch))
+ {
+ $iSteps = max(8, min(100, ($fRadius * 40000)^2));
+ $fStepSize = (2*pi())/$iSteps;
+ $aPolyPoints = array();
+ for($f = 0; $f < 2*pi(); $f += $fStepSize)
+ {
+ $aPolyPoints[] = array('',$aMatch[1]+($fRadius*sin($f)),$aMatch[2]+($fRadius*cos($f)));
+ }
+ }
+ return $aPolyPoints;
+ }