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Question on new (2.8) paint dynamics

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Question on new (2.8) paint dynamics Rob Antonishen 20 May 06:13
  Question on new (2.8) paint dynamics Alexia Death 20 May 09:49
   Question on new (2.8) paint dynamics Rob Antonishen 20 May 15:35
    Question on new (2.8) paint dynamics Joao S. O. Bueno 21 May 02:53
Rob Antonishen
2010-05-20 06:13:55 UTC (over 14 years ago)

Question on new (2.8) paint dynamics

I have looked at some of the previews and devel paint dynamic reports/reviews and still have a couple questions.

In amongst all those settings is there any "trace a source layer" as an option?

Like ID a greyscale source layer and have the brush dynamics follow that (i.e. brush size or opacity based on the value of the source layer at that point)?

And along with that is there a brush dynamic to control the gamma of a brush while painting? (This would be much like hardness for parametric brushes but for colour (stamp) type brushes would have some value).

Thanks in advance-

-Rob A>

Alexia Death
2010-05-20 09:49:52 UTC (over 14 years ago)

Question on new (2.8) paint dynamics

On Thu, May 20, 2010 at 7:13 AM, Rob Antonishen wrote:

I have looked at some of the previews and devel paint dynamic reports/reviews and still have a couple questions.

In amongst all those settings is there any "trace a source layer" as an option?

No. and there wont be one in this iteration either. Its nontrivial and probably pretty slow to access pixel under cursor for dynamics evaluation and the whole thing needs to stabilize first. there are other simpler dynamics inputs that are proposed, but not happening for 2.8, like the position of the cursor in the image.

And along with that is there a brush dynamic to control the gamma of a brush while painting?  (This would be much like hardness for parametric brushes but for colour (stamp) type brushes would have some value).

What do you mean by gamma? There is the Force output. It tries to emulate the force a brush is applied to the canvas with, that saturates some parts of the brush when applied. It has been part of gimp for ages, under the name of hardness but it is not really hardness as used in vector brushes so it has a new name now.

Rob Antonishen
2010-05-20 15:35:39 UTC (over 14 years ago)

Question on new (2.8) paint dynamics

I will have to play with the force setting. I a looking to have a pixmap brush be lighter or darker based on brush pressure. Maybe explained like a dynamic dodge/burn applied to the brush source while painting?

-Rob A>

On 5/20/10, Alexia Death wrote:

On Thu, May 20, 2010 at 7:13 AM, Rob Antonishen wrote:

I have looked at some of the previews and devel paint dynamic reports/reviews and still have a couple questions.

In amongst all those settings is there any "trace a source layer" as an option?

No. and there wont be one in this iteration either. Its nontrivial and probably pretty slow to access pixel under cursor for dynamics evaluation and the whole thing needs to stabilize first. there are other simpler dynamics inputs that are proposed, but not happening for 2.8, like the position of the cursor in the image.

And along with that is there a brush dynamic to control the gamma of a brush while painting?  (This would be much like hardness for parametric brushes but for colour (stamp) type brushes would have some value).

What do you mean by gamma? There is the Force output. It tries to emulate the force a brush is applied to the canvas with, that saturates some parts of the brush when applied. It has been part of gimp for ages, under the name of hardness but it is not really hardness as used in vector brushes so it has a new name now.

-- --Alexia

Joao S. O. Bueno
2010-05-21 02:53:16 UTC (over 14 years ago)

Question on new (2.8) paint dynamics

On Thu, May 20, 2010 at 10:35 AM, Rob Antonishen wrote:

I will have to play with the force setting. I a looking to have a pixmap brush be lighter or darker based on brush pressure. Maybe explained like a dynamic dodge/burn applied to the brush source while painting?

Features apart, Rob, you can use some sort of "source layer" tracking by using the clone tool instead. Just use it in registered mode, and explore the painting modes/ painting on the layer mask, etc...

Regards,

js

-Rob A>

On 5/20/10, Alexia Death wrote:

On Thu, May 20, 2010 at 7:13 AM, Rob Antonishen wrote:

I have looked at some of the previews and devel paint dynamic reports/reviews and still have a couple questions.

In amongst all those settings is there any "trace a source layer" as an option?

No. and there wont be one in this iteration either. Its nontrivial and probably pretty slow to access pixel under cursor for dynamics evaluation and the whole thing needs to stabilize first. there are other simpler dynamics inputs that are proposed, but not happening for 2.8, like the position of the cursor in the image.

And along with that is there a brush dynamic to control the gamma of a brush while painting?  (This would be much like hardness for parametric brushes but for colour (stamp) type brushes would have some value).

What do you mean by gamma? There is the Force output. It tries to emulate the force a brush is applied  to the canvas with, that saturates some parts of the brush when applied. It has been part of gimp for ages, under the name of hardness but it is not really hardness as used in vector brushes so it has a new name now.

-- --Alexia

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