Merge pull request #179 from CartoDB/clamped

Changes value array type to UInt8ClampedArray

Author: fdansv

lib/torque/core.js

@@ -61,6 +61,7 @@
   // types
   var types = {
     Uint8Array: typeof(global['Uint8Array']) !== 'undefined' ? global.Uint8Array : Array,
+    Uint8ClampedArray: typeof(global['Uint8ClampedArray']) !== 'undefined' ? global.Uint8ClampedArray: Array,
     Uint32Array: typeof(global['Uint32Array']) !== 'undefined' ? global.Uint32Array : Array,
     Int16Array: typeof(global['Int16Array']) !== 'undefined' ? global.Int16Array : Array,
     Int32Array: typeof(global['Int32Array']) !== 'undefined' ? global.Int32Array: Array

lib/torque/provider/windshaft.js

@@ -4,6 +4,7 @@
   var Uint8Array = torque.types.Uint8Array;
   var Int32Array = torque.types.Int32Array;
   var Uint32Array = torque.types.Uint32Array;
+  var Uint8ClampedArray = torque.types.Uint8ClampedArray;
 
   // format('hello, {0}', 'rambo') -> "hello, rambo"
   function format(str) {
@@ -82,7 +83,7 @@
         dates = (1 + maxDateSlots) * rows.length;
       }
 
-      var type = this.options.cumulative ? Uint32Array: Uint8Array;
+      var type = this.options.cumulative ? Uint32Array: Uint8ClampedArray;
 
       // reserve memory for all the dates
       var timeIndex = new Int32Array(maxDateSlots + 1); //index-size