How to remove the white aperture in the filled area?
I am trying to fill closed areas with "spline" as boundaries.
problem I have is mainly: there are often white aperture(s) left, some can be removed by adjust the size of the window and some cannot.
Attached is one example which cannot be easily removed if I don't change coordinates of any spline knots.
How to solve it? I want to have the closed area filled with the same color without aperture. For example: