Comment:
Windows Paint is blamed about its image processing weakness. But after I write this simple sketch board, I think Paint is tens of times better than what I do.
Though my work is really hard to use, I finally completed a draw(above picture). More than, it's not a picture captured by screen snapshot software as before but this program. Although the quality is not good as snapshot, we proved same thing that Processing program could do, too.
About color choosing, it's implemented by block dividing. But I don't think it's a good way to do that. Since Processing is a OO language, we should implement by button object(or some thing equivalently) as other Java programs did.
Hence, writing programs match OO style is next issue I need to focus on.
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