Add tests, remove unused code, encapsulate repeated code in functions

2016-02-15 01:35:20 +01:00
parent a109062b1f
commit 952b99742e
5 changed files with 120 additions and 63 deletions
--- a/src/ol/render/canvas/canvas.js
+++ b/src/ol/render/canvas/canvas.js
@@ -94,3 +94,18 @@ ol.render.canvas.defaultTextBaseline = 'middle';
 * @type {number}
 */
 ol.render.canvas.defaultLineWidth = 1;
+
+
+/**
+ * @param {CanvasRenderingContext2D} context Context.
+ * @param {number} rotation Rotation.
+ * @param {number} offsetX X offset.
+ * @param {number} offsetY Y offset.
+ */
+ol.render.canvas.rotateAtOffset = function(context, rotation, offsetX, offsetY) {
+  if (rotation !== 0) {
+    context.translate(offsetX, offsetY);
+    context.rotate(rotation);
+    context.translate(-offsetX, -offsetY);
+  }
+};