How to draw smooth outlines in fontlab

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ott's picture
ott
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Joined: 26 Feb 2012 - 4:57am
How to draw smooth outlines in fontlab
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Hello,

I have a problem in drawing in fontlab, always my letters are not smooth when I display it on screen. So, what is right way or best way to draw in fontlab? any help please?

thanks

Nick Cooke's picture
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Joined: 25 May 2004 - 2:29am
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Can you post an image? The main method of achieving smoothness is nodes at extremes, and as few as possible while preserving character integrity.

Hrant H Papazian's picture
Joined: 3 May 2000 - 11:00am
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I'm guessing this is actually referring to screen rendering => hinting.

hhp

ott's picture
ott
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Joined: 26 Feb 2012 - 4:57am
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here is a screenshot

Hrant H Papazian's picture
Joined: 3 May 2000 - 11:00am
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Oh, I was wrong.
So: mostly what Nick said.

hhp

Thomas Phinney's picture
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Joined: 3 Sep 2002 - 11:00am
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If you could do a screen shot showing the unfilled outline, including the on- and off-curve nodes, we could give some more helpful advice.

It looks as if perhaps you have an on-curve point whose corresponding BCP is collapsed right onto the point, causing what you want to be a smooth curve to exhibit a bit of a "kink." But without seeing the point structure it is hard to be sure. There are many ways to mess up a curve, unfortunately! :)

ott's picture
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Joined: 26 Feb 2012 - 4:57am
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Thomas, this is screenshot showing the unfilled outline

Hrant H Papazian's picture
Joined: 3 May 2000 - 11:00am
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1) That's the good one; let's see the "tooth" on the right.
2) Also showing the control points is critical.

hhp

ott's picture
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Joined: 26 Feb 2012 - 4:57am
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hrant: hope this is helpful

ott's picture
ott
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Joined: 26 Feb 2012 - 4:57am
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I have converted the outlines from PostScript to TrueType but the problem is still!! any help??

Hrant H Papazian's picture
Joined: 3 May 2000 - 11:00am
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Converting poor outlines to TT can only make it worse. :-/

Let's try this again...
In your first image
http://typophile.com/files/smooth_4931.png
the worst offender is the inside curve of the bottom-right element.
Could you show a screengrab from FontLab with all the control points?

BTW in FontLab, Alt-Shift-Click balances the control points in a curve.

hhp

ott's picture
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Joined: 26 Feb 2012 - 4:57am
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I really dont know, but I dont think changing one point will solve the issue
here the screenshot that you asked about:

Hrant H Papazian's picture
Joined: 3 May 2000 - 11:00am
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Actually that's not the big offender. I meant this part:

But actually in the part you do show, the vertex at the top of the inside curve (right above the 402 guide) has control points that are not aligned. If you do that more deliberately that can actually work (assuming it's made to carry through the entire font) but here it's close-but-not-exact, which makes it look simply wrong.

hhp

ott's picture
ott
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Joined: 26 Feb 2012 - 4:57am
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Is it necessary to aligned all control points? If so, how I can draw this curve without it? can you recommended or explain something about that?

Thanks

Fábio Duarte Martins's picture
Joined: 23 Nov 2005 - 10:27am
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Try extending the horizontal control point and shortening the vertical one.

And have a look here: http://learn.scannerlicker.net/2014/04/16/bezier-curves-and-type-design-...