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Color from Gradient broken

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Color from Gradient broken Alexandre Prokoudine 31 Oct 07:24
  Color from Gradient broken Alexia Death 31 Oct 07:34
Color from gradient broken Ofnuts 05 Nov 21:16
  Color from gradient broken Alexia Death 05 Nov 21:32
Alexandre Prokoudine
2010-10-31 07:24:25 UTC (over 14 years ago)

Color from Gradient broken

Hi,

I'm not sure what recent changes it's related to and whether this is well-known, but "Color from Gradient" appears to be broken: if you check the option and choose even a very colorful gradient, the brush will still paint with the currently chosen FG color.

Alexandre Prokoudine http://libregraphicsworld.org

Alexia Death
2010-10-31 07:34:58 UTC (over 14 years ago)

Color from Gradient broken

On Sun, Oct 31, 2010 at 9:24 AM, Alexandre Prokoudine wrote:

Hi,

I'm not sure what recent changes it's related to and whether this is well-known, but "Color from Gradient" appears to be broken: if you check the option and choose even a very colorful gradient, the brush will still paint with the currently chosen FG color.

For this to work you need to enable color dynamic on some input as well. and its not recent, its so ever since the new dynamics were put in place. Both gradient and and fade suffer from this double enabling quirk. the old dynamics just overrode the gradient switch in the tool options. If there was a color maping it worked. My plan to remove the enabling tick-boxes wasn't accepted and nobody has really proposed another workable plan yet so it sits and waits for a bright idea.

Ofnuts
2010-11-05 21:16:45 UTC (over 14 years ago)

Color from gradient broken

I just played a bit with this and I confirm there is something fishy in the UI (I'm on 2.6).

When using a tablet, with "color from gradient" checked and all brush dynamics (pressure/velocity/random) un-checked, one ends up in a mode where the color is derived from the length of the current brush stroke. And there is nothing making that clear in the UI. And when one selects another dynamic, the "length" one disappears and nothing shows how to put it back.

So, my suggestion;

1) make the "length" dynamic (or whatever its official name is) explicit, with its own line of checkboxes.

2) grey out the gradient part when no "color" is used in any of the dynamics (its "length" selector, that seem used only for the length dynamic could be replaced by the cursor on the right of the checkboxes).

3) the "fade out" option is merely the opacity controlled by the length dynamic.

4) grey out the pressure/veloclity (no tilt support yet?) when there are no extended devices.

5) come to think of it, the amount of jitter could also be controlled by the dynamics (of course we need a way to specifiy a fixed jitter, either by an artificial "no dynamic", or by using a minimum cursor value in the length dynamic).

6) I'm not too enamored with the little cursor symbols next to the checkboxes. 1) iIt is not so obvious there is something to set there, 2) they aren't that much readable, 3) they don't explain how they work (percentage? length? pixels/second)? 3) some dynamics may need more than one cursor (for length: none/sawtooth/triangle, but pressure/velocity could have several transfer functions)

Hoping my criticism has been constructive enough ...

Alexia Death
2010-11-05 21:32:27 UTC (over 14 years ago)

Color from gradient broken

On Fri, Nov 5, 2010 at 11:16 PM, Ofnuts wrote:

I just played a bit with this and I confirm there is something fishy in the UI (I'm on 2.6).

Hoping my criticism has been constructive enough ...

Sadly, it is mostly hopelessly obsolete. Dynamics in git are VERY different than what is in 2.6. there are several review of git and its under development dynamics out there, look one up. For example, dynamics grid is now 11x7 check boxes and resides in its own dockable and each of the mappings can have a curve applied...

One note on it tho, velocity does not require an extended device.