setTransform を追加

diff --git a/src/canvas.js b/src/canvas.js
index 79ee603..38a2095 100644 (file)
--- a/src/canvas.js
+++ b/src/canvas.js
@@ -10,4 +10,10 @@ FlappCanvas = function(canvas) {
     this.ctx = canvas.getContext('2d');
 };
 
+FlappCanvas.prototype = {
+    setTransform: function(matrix) {
+       this.ctx.setTransform(matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]);
+    }
+}
+
 });