Help achieving a brush behavior

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  • Updated 9 months ago
I'd love some advice on how to achieve this brush effect. I'd like to make a straight line (e.g. the round brush tip), but with semi-random spacing that gets wider the less brush pressure there is.



At this point, I've tried for long enough that I think it's impossible. :(

One way to do it would be to have scattering along the brush path inversely proportional to brush pressure, but scattering is only lateral or both (there's no stroke-aligned scattering), and you can't invert brush pressure.

I've considered texture and dual brush options, but I can't make that work either! (The only pressure-sensitive option is depth.)

Any help would be much appreciated!
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Michael Prescott

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Posted 10 months ago

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Michael Prescott

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This is as close as I've come, using roundness controlled by pen pressure, but it's pretty terrible. :)
https://www.dropbox.com/s/hajtpjesydlmmqe/Shader%20Brush.abr?dl=0
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Joseph Vittek

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Although it is not a exact solution, how about creating brushes with the patterns you would like to achieve and using them with pressure?  
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Michael Prescott

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What does the pressure do in this scenario?
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Joseph Vittek

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I haven't tried it but I suspect it will fatten the line rather than stretch it.  As I said, not an exact solution but maybe something you can work with.   Perhaps set up several patterns that you can string together as you work.
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Michael Prescott

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Ah, misunderstanding: I don't understand what you're proposing. What variable is controlled by brush pressure?
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Joseph Vittek

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I believe it would be the diameter of the brush but I could be wrong.
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Dug Schafer

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I don't know how to do in Ps but it can be easily done in Illustrator then copy paste from .ai or .jpg into your Ps painting....which you can further adjust/transform.
Illustrator stroked with brush of choice and line modified to be a dotted line with each space and paint mark length set by you (up to a limit of about 6 or 8 repeatable length settings?) In art strokes you can probably adjust the stroke width along the path too.
Doug
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Mark Payne

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I'd love to be able to do what the original question asks.

The replies are close but don't quite offer the deliberate dynamic touch, like control when the lines are long vs dots by pen pressure.

To me, it sounds like Spacing should be added to Shape Dynamics setting and controlled by pressure. I think that feature would do exactly what the question asks.

Hope someone reads this and considers it for a feature.