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並前往https://books.google.com.tw/books?id=hE2Dftq3vEwC&pg=PA124&lpg=PA124&dq=putimagedata+scale&source=bl&ots=CdkNVovMjG&sig=ACfU3U3bq6LGHQNUYOoeQNY7oE7F_yLn-w&hl=zh-TW&sa=X&ved=2ahUKEwjmiPfZ-ZD0AhX8k1YBHUGeDCMQ6AF6BQisAhAD

Programming the Canvas: HTML5 JavaScript Ruby Python Perl

We can also crop, scale, place at the same time (see 11—13). ... putImageData(imgData,0,0) turn pixels to canvas 18 imgData=createImageData(100,100) blank ...

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