canvas.toDataURL doesn't respect stencil about vue-advanced-cropper

[Norserium]

Hello, @andreasvirkus!

First of all, thanks for so detailed the issue description.

Unfortunately, it's not possible by the means of this library, because the stencil just defines the rectangle area that will be cropped. Moreover, it's pretty often practice to crop a square by the circle stencil.

But you can anyway process a rectangle canvas to get the needed result (if you want to use this method, test it on different browsers before to use one in production):
https://codesandbox.io/s/vue-xeb59

[andreasvirkus]

Well, that seems to work perfectly! 🎉 Thank you so much, my canvas-fu was too weak for this

[Norserium]

You are welcome!

[yellow1912]

This is great content, please add it to the document if you can. It will save people like me tons of time digging the old issues.

[Norserium]

@yellow1912 , I will try to think out how to place it in the documentation, taking into account that the mentioned issues are still edge cases.