Javascript 画布动画套件实验。。。如何清理画布?
我可以制作一个obj,使用画布绘制如下:Javascript 画布动画套件实验。。。如何清理画布?,javascript,animation,html,canvas,Javascript,Animation,Html,Canvas,我可以制作一个obj,使用画布绘制如下: MyObj.myDiv = new Canvas($("effectDiv"), Setting.width, Setting.height); 然后,我使用它在画布上绘制一个矩形: var c = new Rectangle(80, 80, { fill: [220, 40, 90] } ); var move = new Timeline; move.add
MyObj.myDiv = new Canvas($("effectDiv"), Setting.width, Setting.height);
然后,我使用它在画布上绘制一个矩形:
var c = new Rectangle(80, 80,
{
fill: [220, 40, 90]
}
);
var move = new Timeline;
move.addKeyframe(0,
{
x: 0,
y: 0
}
);
c.addTimeline(move);
MyObj.myDiv.append(c);
canvas.clear = true; // makes the canvas clear itself on every frame
canvas.fill = somecolor; // fills the canvas with some color on every frame
// with canvas.clear = false and low-opacity fill, fancy motion blur effect
Removing the rectangle from the canvas:
rectangle.removeSelf();
or
canvas.removeChild(rectangle);
但是在我画了矩形之后,我想清除画布,但我不知道是哪种方法,怎么做
还有一件事:
这是蛋糕的网站:
您可以尝试以下方法:
MyObj.myDiv.clearRect(0, 0, canvas.width, canvas.height);
有效地将整个画布着色为背景色。清除画布:
var c = new Rectangle(80, 80,
{
fill: [220, 40, 90]
}
);
var move = new Timeline;
move.addKeyframe(0,
{
x: 0,
y: 0
}
);
c.addTimeline(move);
MyObj.myDiv.append(c);
canvas.clear = true; // makes the canvas clear itself on every frame
canvas.fill = somecolor; // fills the canvas with some color on every frame
// with canvas.clear = false and low-opacity fill, fancy motion blur effect
Removing the rectangle from the canvas:
rectangle.removeSelf();
or
canvas.removeChild(rectangle);
最简单的方法是:
MyObj.myDiv.width = MyObj.myDiv.width;
我发现调整画布的大小就像变魔术一样,即使你没有真正改变大小:
canvas.width = canvas.width
请注意,不管有什么说法,这对Safari并不完全有效。请注意,不管有什么说法,这对Safari也不完全有效。