(Continuation from yesterday)

I think that there are a lot of drawing libraries that enable me to hit points or draw lines.

So, in Python or JavaScript, I was really surprised that I can not find libraries I want.

Of course , I don't mean there is no libraries in the world, however,

even if I want to draw dots or lines in my simulation programs, I have to set enormous annoying per-procedures.

Not only installing the libraries, I have to read many sample program in order to understand something, for example, frame declares of background or foreground.

In addition, it is me to make a program for exchanging a coordinate transformation.

"How stupid! Why do they want to make annoying world on purpose?""

"Using "lineto()" is enough for everyone isn't it?"

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Fortunately, a person who tried to make a wonderful drawing library, -- I don't know whether the person think "How stupid!" ----

whose name is "GRWin".

The library is made of very simple drawing I/Fs for student to concentrate the calculation algorithm ( they don't become sick by stupid drawing procedures.), and I am impressed.

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But I know that it cannot be helped because of the specification, I am very sorry that GRWin is for windows OS only.

But I never say that

"If I can use GRWin for Web browser in the OS-independent, I become happy."

If I say so, another say to me

"Why don't you try it?"

I know well that.

I have already studied the implementation, however, I noticed that enormous annoying(omitted).