1 files changed, 40 insertions, 0 deletions
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c7407de
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,40 @@
+
+// Map function
+export function map (array, block) {
+  var i
+  var il = array.length
+  var result = []
+
+  for (i = 0; i < il; i++) {
+    result.push(block(array[i]))
+  }
+
+  return result
+}
+
+// Filter function
+export function filter (array, block) {
+  var i
+  var il = array.length
+  var result = []
+
+  for (i = 0; i < il; i++) {
+    if (block(array[i])) { result.push(array[i]) }
+  }
+
+  return result
+}
+
+// Degrees to radians
+export function radians (d) {
+  return d % 360 * Math.PI / 180
+}
+
+// Radians to degrees
+export function degrees (r) {
+  return r * 180 / Math.PI % 360
+}
+
+export function filterSVGElements (nodes) {
+  return this.filter(nodes, function (el) { return el instanceof window.SVGElement })
+}