Parallel lines?

[last_dovahkiin]

So I want to make two lines that "follow" one-another, like picture below. I want to make border lines for my map.

The image below is created by drawing one solid color line, and another with either dotes or lines - but the problem is, while it is easy to follow one line with another on the small scale or when the line is straight, it is problematic to follow it when it is curvy.

Is there any way for me to simultaneously draw both lines, or at least to draw one and then have some plug-in do adjust another line to first one?

[Reptillian]

5 hours ago, last_dovahkiin said:

 

Is there any way for me to simultaneously draw both lines, or at least to draw one and then have some plug-in do adjust another line to first one?

 

At this point, you're going to have to use a vector supported software. Raster don't translate very well to adjustable lines.

[Pixey]

Hello @last_dovahkiin   The only thing I can think of - at this minute - is that you can make yourself a brush (make a small .png), like this:

 

 

And, using either Custom Mini Brushes or Brush Factory you can draw the lines.  I have yet to successfully upload a brush to Brush Factory, but it works, kind of, with Custom Mini Brushes using the RIGHT click on your mouse to drag the brush over the canvas.

 

[Ego Eram Reputo]

Thought experiment:

 

1. Draw your solid line on it's own transparent layer.

2. Duplicate the layer (next two steps use this new layer)

3. Apply Motion blur in a direction which approximates the width of the dotted band.

4. Apply Halftone to make the motion blurred gradient into dots. 

[Ego Eram Reputo]

Ed Harvey's Halftone works better than TR's regarding the surrounding transparency.

 

Other plugins to consider: Alpha to dots does quite a nice job.