# Talk:Outline Layer

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Hi dooglus! Thanks for fix the spelling and finishing the page. I'm so slow due to I cannot spend so much time with the computer everyday. I apologize for the amount of errors on my English.. oops!. Maybe you can include another example of use a with value negative and a Expand value positive and bigger. If the ducks width values are the proper one you can achieve funny things:

Final width = VertexWidth * OutLineWidth + Expand

OutLineWidth = -4 Expand = 30

duck 1:

VertexWidth = 5; Final Width = 5*(-4) + 30 = 10

duck 2:

VertexWidth = 10; Final Width = 10*(-4) + 30 = -10

In this situation the line cross a width of 0 in the middle of both ducks. Also negative width values gives concave radius when rounded. It is funny.--Genete 19:06, 12 Sep 2007 (EDT)

I think I made a mistake in the description of Expand - it's the radius to expand, not the diameter. So in your example, I think you would need an Expand of 15, not 30. "Final width = VertexWidth * OutLineWidth + 2*Expand"
Also, wouldn't it be simpler to have vertex 1:width -1; vertex 2: width 1; expand:0 width:big-enough-to-see
That should give the same results, right? I'll upload a screenshot anyway, and you can tell me if that's the same as you're seeing.
You're right. I've corrected also the same formula for Expand. And yes, the effect I wanted to explain was perfectly described by your screenshots. See you! --Genete 10:57, 13 Sep 2007 (EDT)