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1. Re: Improved Brush Stroke Engine
sfjedi May 9, 2009 8:45 AM (in response to sfjedi)In another discussion, Reynolds (Mark) wrote:
Photoshops brush tools at the moment are not set up to simulate naturalistic effects at all. This has advantages and disadvantages - the advantage is that you can customise brushes in very complex ways that in some ways go far beyond what you can do in natural media.
I understand these advantages of the current brush tools and by all means don't wish for them to change, but the brush system should be smart enough to know when we are trying to achieve these effects vs. when we are trying to do an actual paintbrush stroke.
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2. Re: Improved Brush Stroke Engine
Reynolds (Mark) May 9, 2009 4:55 PM (in response to sfjedi)sigh… You need to look into the brush controls more deeply. Two controls in particular "Spacing" and the "Airbrush" checkbox.
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3. Re: Improved Brush Stroke Engine
sfjedi May 9, 2009 4:58 PM (in response to Reynolds (Mark))Reynolds (Mark) wrote:
sigh… You need to look into the brush controls more deeply. Two controls in particular "Spacing" and the "Airbrush" checkbox.
Dude I know what brush (dab) spacing is and the airbrush checkbox too. I've used them both, but this is a fundamental problem with the way brushes are rendered, regardless of spacing! Dab spacing is a flawed concept when looking for a natural brush response.
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4. Re: Improved Brush Stroke Engine
harry teasley May 9, 2009 5:48 PM (in response to sfjedi)Spacing and smoothing fix this. No, really.
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6. Re: Improved Brush Stroke Engine
harry teasley May 10, 2009 4:15 PM (in response to sfjedi)I don't see that behavior, with the brushes I've tried.
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7. Re: Improved Brush Stroke Engine
sfjedi May 10, 2009 4:43 PM (in response to harry teasley)harry teasley wrote:
I don't see that behavior, with the brushes I've tried.
It is less apparent with certain brushes, but the problem will persist until the brush engine is fixed to make a more natural effect. I'm not saying to rid of the current brush engine, as it's extremely beneficial for certain scatter effects and such, but definitely change how it works when these scatter effects are NOT being used!
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8. Re: Improved Brush Stroke Engine
Reynolds (Mark) May 11, 2009 2:00 PM (in response to sfjedi)Do you use a Wacom? Are you using Windows OS? I also have never seen these problems. There are hunderds of people, matte painters, illustrators who all use photoshops brush engine, without complaints. It may be some idiotic thing like trying to paint with a mouse, someting to do with uneveness is sampling, probably related to windows clunky input engine, thats my theory
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9. Re: Improved Brush Stroke Engine
harry teasley May 11, 2009 2:20 PM (in response to Reynolds (Mark))I would guess that it may be possible to define a custom brush shape (I'm envisioning a main blob, with a stray pixel far away from it, as being the brush source) where it may push the spacing/smoothing function to an extreme, such that maybe you would get artifacts with it. It might be possible.
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Nope, that attempt didn't produce the effect. I can't get this behavior.
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10. Re: Improved Brush Stroke Engine
sfjedi May 11, 2009 6:53 PM (in response to sfjedi)I'm using Vista Home Premium (64-bit) w/ PS v11.0. Yes, I use a tablet, but for the purposes of this demonstration I created 2 paths and stroked them with a brush to maintain consistency between them.
Yeah, I can't reproduce this at school for some reason, but I can't find the same brush here either.
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11. Re: Improved Brush Stroke Engine
Reynolds (Mark) May 12, 2009 9:17 AM (in response to sfjedi)A sampled brush, thats one that has been created - can have all kinds of problems, maybe the edge isnt hard enough? there are grey pixels in the brush causing unwanted transparency. The standard Photoshop round, controlled feathering brushes are different and are resolution independent.Think of these like vector brushes- they rasterise at the size of the diameter.
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12. Re: Improved Brush Stroke Engine
sfjedi May 12, 2009 9:53 AM (in response to Reynolds (Mark))You know, it's odd. This particular brush that I used is built-in to Photoshop; yet, I can't find it on the other CS4 installations at school.
I realize what you're saying about the standard round brushes being treated like vector and all, but even if this were the case, this same side effect could occur. Programmatically, the way the brush is being drawn is not meant for naturalistic effects.
Theoretically, with this supposed new solution, spacing could be set to zero and that's when PS would know to switch the brush stroke engine from traditional to natural.
It would have to draw it differently though.




