问题描述
我正用这个把头撞在墙上。我有raphael js版本2.0，我需要让图像以跨浏览器的方式旋转。我很乐意在CSS3中做到这一点，但并非所有的浏览器都支持我需要做的事情。
所以，在绞尽脑汁之后，我去了拉斐尔游乐场并尝试过那里有一些代码。在那里也不起作用。这里发生了什么？
去游乐场：
运行此代码，应该看到正方形的轮廓。
paper.rect（100,100,300,300）.animate（{rotation： - 45}，2000）;
使用转换工作：
paper.rect（100,100,300,300）.animate（{transform：r45}，2000）;
但不幸的是，转换时，我似乎无法指定一个中心点。我希望对象从左下角旋转。我可以用这段代码做到这一点：
paper.rect（100,100,300,300）.rotate（45,0,300）
但是没有动画，或者接受缓和，或者有任何回调。
我看过几个例子中的轮换，包括： / p>
谢谢，
- keith
旋转属性似乎从2.0规范。它存在于1.x.我不知道为什么会这样，但我在新文档中找不到它。我希望这是一个疏忽，将在未来的小修订中得到纠正。
在此期间，您可以创建自己的动画处理程序并在每个刻度线上调用.rotate根据你自己的宽松政策。
I'm banging my head against a wall with this one. I have raphael js version 2.0 and I need to make images rotate in a way that's cross-browser. I would love to do it in CSS3, but not all browsers support what I need to do.
so, after racking my brain, I went to the Raphael playground and tried out some code in there. Doesn't work there either. What's going on here?
go to playground: http://raphaeljs.com/playground.htmlrun this code, should see an outline of a square.paper.rect(100, 100, 300,300).animate({rotation:"-45"}, 2000);
using transform works:
paper.rect(100, 100, 300,300).animate({transform:"r45"}, 2000);
but unfortunately with transform, I can't seem to specify a centerpoint. I want the object to rotate off the bottom-left corner. I can do that with this code:
paper.rect(100, 100, 300,300).rotate(45,0,300)
but that doesn't animate, or accept easing, or have any callbacks.
I've seen "rotation" in several examples including these:
http://www.irunmywebsite.com/raphael/additionalhelp.php#PAGETOPhttp://net.tutsplus.com/tutorials/javascript-ajax/an-introduction-to-the-raphael-js-library/
thanks,- keith
The rotation attribute seems to be missing from the 2.0 specification. It existed in 1.x. I don't know why this is so, but I can't find it in the new documentation. I expect this is an oversight that will be corrected in a minor revision going forward.
In the meantime, you can create your own animation handler and call .rotate on each tick based on your own easing.
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