HTML5 Canvas的“绘制”方法？

Question

Is there a way of preventing anything drawn to the canvas to be seen until a certain point? I'd like to be able to draw a number of objects at once, then draw over them with another object and a different composite method, on a loop.

Because the first lot of painting takes so long, the result will only be seen for a fraction of a second before it loops.

Answer 1

正常的方法是将这些对象渲染到屏幕外的Canvas ，然后使用context.drawImage()将其复制到屏幕上。