1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 var ballRadius; 6 7 function drawBallInit(diameter) { 8 ballRadius = diameter / 2; 9 } 10 11 function drawBall(x, y, angle) { 12 canvasContext.save(); 13 canvasContext.fillStyle = 'blue'; 14 canvasContext.translate(x, y); 15 canvasContext.rotate(angle); 16 canvasContext.fillRect(-ballRadius, -ballRadius, ballDiameter, ballDiameter); 17 canvasContext.restore(); 18 } 19
