Re: [Gimp-user] stroking path with 1 pixel width brush is semiopaque

2008-03-25 Thread Daniel Hornung
On Tuesday 25 March 2008, dorai iyer wrote:
 I selected a 1 pixel thick brush to stroke the drawn path onto an image.
 When I stroked the path, the color of the stroke appears semi transparent.
 Is there a way to make it appear completely solid.
 Thanks

You could turn off antialiasing (extension of the stroke dialog under line 
style) or use the pencil as paint tool there with a 1 pixel brush, these 
two methods look equivalent to me.  You might have noticed that you have full 
color pixels where the path goes straight across a pixel, but less when the 
pixel is only touchedm this is due to the antialiasing that's on by default.

This will give a fully colored, 1-pixel line:
 -
 | x-|---|---|---|---|-x |
 -

This will give a 50% colored, 2-pixel line:
 -
 |   |   |   |   |   |   |
 --x---x--
 |   |   |   |   |   |   |
 -


I hope this helped a bit to understand the problem.

Greetings, Daniel


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Re: [Gimp-user] stroking path with 1 pixel width brush is semiopaque

2008-03-25 Thread GSR - FR
Hi,
[EMAIL PROTECTED] (2008-03-25 at 2156.34 +0100):
 This will give a fully colored, 1-pixel line:
  -
  | x-|---|---|---|---|-x |
  -
 
 This will give a 50% colored, 2-pixel line:
  -
  |   |   |   |   |   |   |
  --x---x--
  |   |   |   |   |   |   |
  -

Add that 50% pixel intensity does not have to match 50% light
intensity (gamma), and the problem becomes more obvious.

GSR
 
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Re: [Gimp-user] stroking path with 1 pixel width brush is semiopaque

2008-03-25 Thread dorai iyer
Thanks, antialiasing was the problem. Appreciate the explanation.

On Tue, Mar 25, 2008 at 1:56 PM, Daniel Hornung [EMAIL PROTECTED]
wrote:

 On Tuesday 25 March 2008, dorai iyer wrote:
  I selected a 1 pixel thick brush to stroke the drawn path onto an image.
  When I stroked the path, the color of the stroke appears semi
 transparent.
  Is there a way to make it appear completely solid.
  Thanks

 You could turn off antialiasing (extension of the stroke dialog under
 line
 style) or use the pencil as paint tool there with a 1 pixel brush,
 these
 two methods look equivalent to me.  You might have noticed that you have
 full
 color pixels where the path goes straight across a pixel, but less when
 the
 pixel is only touchedm this is due to the antialiasing that's on by
 default.

 This will give a fully colored, 1-pixel line:
  -
  | x-|---|---|---|---|-x |
  -

 This will give a 50% colored, 2-pixel line:
  -
  |   |   |   |   |   |   |
  --x---x--
  |   |   |   |   |   |   |
  -


 I hope this helped a bit to understand the problem.

 Greetings, Daniel

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