diff --git a/light9/web/timeline/drawing.ts b/light9/web/timeline/drawing.ts
--- a/light9/web/timeline/drawing.ts
+++ b/light9/web/timeline/drawing.ts
@@ -1,6 +1,5 @@
-(window as any).Drawing = {};
 
-(window as any).Drawing.svgPathFromPoints = function (pts: { forEach: (arg0: (p: any) => void) => void }) {
+export function svgPathFromPoints(pts: { forEach: (arg0: (p: any) => void) => void }) {
   let out = "";
   pts.forEach(function (p: Number[] | { elements: Number[] }) {
     let x, y;
@@ -20,7 +19,7 @@
   return out;
 };
 
-(window as any).Drawing.line = function (
+export function line(
   ctx: { moveTo: (arg0: any, arg1: any) => void; lineTo: (arg0: any, arg1: any) => any },
   p1: { e: (arg0: number) => any },
   p2: { e: (arg0: number) => any }
@@ -30,7 +29,7 @@
 };
 
 // http://stackoverflow.com/a/4959890
-(window as any).Drawing.roundRect = function (
+export function roundRect(
   ctx: {
     beginPath: () => void;
     moveTo: (arg0: any, arg1: any) => void;