我正在尝试为图像的特定部分着色，但颜色适用于完整图像..有人可以帮我吗？
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You should reconsider the structure of your code I got lost when I search for the initialization part (function names etc..). Also, I'm not sure if you do this in your own code, but you cannot get image data using an image that is not in your domain for security reasons.
Just draw a small rectangle and try to fill it, if it is not working, update your jsfiddle and ask here again
于 2012-04-10T15:20:12.230 回答