From f7fd05cfba647af542ef6b25ceddc5737a278e78 Mon Sep 17 00:00:00 2001
From: Christopher Willis-Ford <cwillisf@media.mit.edu>
Date: Tue, 10 Jan 2017 15:22:33 -0800
Subject: [PATCH] Use skin-relative coordinates for Pen actions

---
 src/PenSkin.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/PenSkin.js b/src/PenSkin.js
index 421dc0d..2e37781 100644
--- a/src/PenSkin.js
+++ b/src/PenSkin.js
@@ -102,9 +102,9 @@ class PenSkin extends Skin {
     drawLine (location0, location1, penAttributes) {
         const ctx = this._canvas.getContext('2d');
         this._setAttributes(ctx, penAttributes);
-        ctx.moveTo(location0[0], location0[1]);
+        ctx.moveTo(location0[0] + this._rotationCenter[0], location0[1] + this._rotationCenter[1]);
         ctx.beginPath();
-        ctx.lineTo(location1[0], location1[1]);
+        ctx.lineTo(location1[0] + this._rotationCenter[0], location1[1] + this._rotationCenter[1]);
         ctx.stroke();
         this._canvasDirty = true;
     }
@@ -116,7 +116,7 @@ class PenSkin extends Skin {
      */
     drawStamp (location, stampElement) {
         const ctx = this._canvas.getContext('2d');
-        ctx.drawImage(stampElement, location[0], location[1]);
+        ctx.drawImage(stampElement, location[0] + this._rotationCenter[0], location[1] + this._rotationCenter[1]);
         this._canvasDirty = true;
     }