Make scaling calculation a little cleaner

diff --git a/BookReaderIA/datanode/BookReaderImages.php b/BookReaderIA/datanode/BookReaderImages.php
index cb1ca65..04d57fe 100644 (file)
--- a/BookReaderIA/datanode/BookReaderImages.php
+++ b/BookReaderIA/datanode/BookReaderImages.php
@@ -282,33 +282,27 @@ if (isset($_REQUEST['height'])) {
 
 } else {
     // $$$ could be cleaner
+    // Provide next smaller power of two reduction
     $scale = intval($_REQUEST['scale']);
     if (1 >= $scale) {
-        $scale = 1;
         $powReduce = 0;
     } else if (2 > $scale) {
         $powReduce = 0;
-        $scale = 1;
     } else if (4 > $scale) {
         $powReduce = 1;
-        $scale = 2;
     } else if (8 > $scale) {
         $powReduce = 2;
-        $scale = 4;
     } else if (16 > $scale) {
         $powReduce = 3;
-        $scale = 8;
     } else if (32 > $scale) {
         $powReduce = 4;
-        $scale = 16;
     } else if (64 > $scale) {
         $powReduce = 5;
-        $scale = 32;
     } else {
         // $$$ Leaving this in as default though I'm not sure why it is...
-        $scale = 8;
         $powReduce = 3;
     }
+    $scale = pow(2, $powReduce);
 }
 
 // Override depending on source image format