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I always have problem with coloring closed curves like the following:

enter image description here

How to color this special closed curve in CorelDraw or AI? Of course I can fill it by some peices but I want unite coloring as I want to use it in animation software.

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  • The problem is that you have applied a fill to an open path. That's never going to work properly. Make a closed path instead, and add the inside line as a separate path with a stroke and no fill.
    – Billy Kerr
    Sep 27 at 21:01
  • OK. Can you help about this problem: My main curve is an open curve as above but without straight that line … I've just added that straight line for filling the area. Do you have any idea?
    – C.F.G
    Sep 28 at 5:55
  • Open paths won't contain a fill properly. Use closed paths for fills instead.
    – Billy Kerr
    Sep 28 at 8:38

1 Answer 1

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It's better to alter construction.

Draw the shape and fill it, and then add any internal paths you need.

enter image description here

One has to envision things as closed shapes first.
Then add any definition based upon internal objects.


Your image seems to just have a fill applied to the inner curve, like so.....

enter image description here

You can just remove the fill.


If you are trying to add another color there without the black stroke on that upper edge, you'll need an additional shape..

In Illustrator... Copy the inner path, Edit > Paste in Back, Object > Path > Join to close the shape. You can then adjust that upper edge if desired. I added a smooth anchor point then made that top edge curve downward....

Remove the stroke, adjust the fill...

enter image description here

enter image description here




From comments, it seems you may be trying to fill this...

enter image description here

If you just add a fill you get and open path with a fill, which is bad and should be avoided. Not to mention you can't control what that connecting , non-stroked, edge looks like ....

enter image description here

So to control what's filled, and have a closed shape, copy the path, close it, remove the stroke, add a fill, then adjust...

enter image description here

It can often be necessary to have a stroke as a separate object in order to create a desired appearance. Then merely group the two objects afterwards.

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