Merge pull request #2042 from elemoine/circle

Use correct circle canvas size

bin/check-example.js

@@ -28,3 +28,6 @@ page.open(examplePath, function(s) {
   }
   phantom.exit(exitCode);
 });
+page.onConsoleMessage = function(msg) {
+  console.log('console:', msg);
+};

src/ol/style/circlestyle.js

@@ -194,6 +194,9 @@ ol.style.Circle.prototype.render_ = function() {
   canvas.height = size;
   canvas.width = size;
 
+  // canvas.width and height are rounded to the closest integer
+  size = canvas.width;
+
   var context = /** @type {CanvasRenderingContext2D} */
       (canvas.getContext('2d'));
   context.arc(size / 2, size / 2, this.radius_, 0, 2 * Math.PI, true);