slightly relax viewbox parameter check

Allow out of bounds parameters as long as the resulting box
covers some legal coodinates.

diff --git a/lib/Geocode.php b/lib/Geocode.php
index 273fc0f006ff12361fdd106ad30c69d89f1ebdbe..7fa349cacefdfddf5d1fb2fed9932e317a1b9327 100644 (file)
--- a/lib/Geocode.php
+++ b/lib/Geocode.php
@@ -180,14 +180,15 @@ class Geocode
     {
         $this->aViewBox = array_map('floatval', $aViewbox);
 
     {
         $this->aViewBox = array_map('floatval', $aViewbox);
 

-        if ($this->aViewBox[0] < -180
-            || $this->aViewBox[2] > 180
-            || $this->aViewBox[0] >= $this->aViewBox[2]
-            || $this->aViewBox[1] < -90
-            || $this->aViewBox[3] > 90
-            || $this->aViewBox[1] >= $this->aViewBox[3]
+        $this->aViewBox[0] = max(-180.0, min(180, $this->aViewBox[0]));
+        $this->aViewBox[1] = max(-90.0, min(90, $this->aViewBox[1]));
+        $this->aViewBox[2] = max(-180.0, min(180, $this->aViewBox[2]));
+        $this->aViewBox[3] = max(-90.0, min(90, $this->aViewBox[3]));
+
+        if (abs($this->aViewBox[0] - $this->aViewBox[2]) < 0.000000001
+            || abs($this->aViewBox[1] - $this->aViewBox[3]) < 0.000000001

         ) {
         ) {

-            userError("Bad parameter 'viewbox'. Out of range.");
+            userError("Bad parameter 'viewbox'. Not a box.");

         }
 
         $fHeight = $this->aViewBox[0] - $this->aViewBox[2];
         }
 
         $fHeight = $this->aViewBox[0] - $this->aViewBox[2];