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reference_manual/brushes/brush_engines/color_smudge_engine.rst

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100 100​
101Overview and settings 101​Overview and settings
102~~~~~~~~~~~~~~~~~~~~~ 102​~~~~~~~~~~~~~~~~~~~~~
103 103​
104Overview: Smearing and Dulling 104​Overview: Smearing and Dulling
105^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 105​^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
106 106​
107The Color Smudge Brush offers 2 modes, accessible from the Smudge Rate section: 107​The Color Smudge Brush offers 2 modes, accessible from the Smudge Rate section:
108​
108* Smearing: This mode mixes colors by smudging ("smearing") the area underneath. 109​* Smearing: This mode mixes colors by smudging ("smearing") the area underneath.
109* Dulling: In his mode, the brush "picks up" the color underneath it, mixes it with its own color, then paints with it. 110​* Dulling: In his mode, the brush "picks up" the color underneath it, mixes it with its own color, then paints with it.
110 111​
111.. image:: /images/en/Krita-tutorial5-I.1.png 112​.. image:: /images/en/Krita-tutorial5-I.1.png
112 113​
113Smudge Length 114​Smudge Length
114^^^^^^^^^^^^^ 115​^^^^^^^^^^^^^
115 116​
116To better demonstrate the smudge function, I turned the color rate function off. 117​To better demonstrate the smudge function, I turned the color rate function off.
117 118​
118.. image:: /images/en/Krita-tutorial5-I.2.png 119​.. image:: /images/en/Krita-tutorial5-I.2.png
119 120​
120Common behaviors: 121​Common behaviors:
122​
121* Unchecking the smudge rate function sets smudge rate to 1.00 (not 0.00) 123​* Unchecking the smudge rate function sets smudge rate to 1.00 (not 0.00)
122* Opacity: Below 0.50, there is practically no smudging left: keep opacity over 0.50. 124​* Opacity: Below 0.50, there is practically no smudging left: keep opacity over 0.50.
123 125​
124Differences: 126​Differences:
127​
125* Spacing with Smearing: the lower the spacing, the smoother the effect, so for smearing with a round brush you may prefer a value of 0.05 or less. Spacing affects the length of the smudge trail, but to a much lesser extent. The "strength" of the effect remains more or less the same however. 128​* Spacing with Smearing: the lower the spacing, the smoother the effect, so for smearing with a round brush you may prefer a value of 0.05 or less. Spacing affects the length of the smudge trail, but to a much lesser extent. The "strength" of the effect remains more or less the same however.
126* Spacing with Dulling: the lower the spacing, the stronger the effect: lowering the spacing too much can make the dulling effect too strong (it picks up a color and never lets go of it). The length of the effect is also affected. 129​* Spacing with Dulling: the lower the spacing, the stronger the effect: lowering the spacing too much can make the dulling effect too strong (it picks up a color and never lets go of it). The length of the effect is also affected.
127* Both Smearing and Dulling have a "smudge trail", but in the case of Dulling, the brush shape is preserved. Instead the trail determines how fast the color it picked up is dropped off. 130​* Both Smearing and Dulling have a "smudge trail", but in the case of Dulling, the brush shape is preserved. Instead the trail determines how fast the color it picked up is dropped off.
128 131​
129 132​
130The other settings should be pretty obvious from the pictures, so I'll spare you some walls of text. 133​The other settings should be pretty obvious from the pictures, so I'll spare you some walls of text.
131 134​
132Color Rate, Gradient and Blending modes 135​Color Rate, Gradient and Blending modes
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199 202​
200I won't explain the settings for dynamics in detail, as you can find the explanations in the Pixel Brush tutorial. 203​I won't explain the settings for dynamics in detail, as you can find the explanations in the Pixel Brush tutorial.
201 204​
202Smudging effects 205​Smudging effects
203^^^^^^^^^^^^^^^^ 206​^^^^^^^^^^^^^^^^
204 207​
205For simple smudging: 208​For simple smudging:
206 209​
207# Pick the Color Smudge Brush. You can use either Smearing or Dulling. 210​* Pick the Color Smudge Brush. You can use either Smearing or Dulling.
208 211​
209# Turn off Color Rate 212​* Turn off Color Rate
210 213​
211# Smudge away 214​* Smudge away
212 215​
213.. image:: /images/en/Krita-tutorial5-II.2.png 216​.. image:: /images/en/Krita-tutorial5-II.2.png
214 217​
215When using lower opacity brush tips, remember to "compensate" for the less visible effects by increasing both Smudge Rate and Opacity, if necessary to maximum. 218​When using lower opacity brush tips, remember to "compensate" for the less visible effects by increasing both Smudge Rate and Opacity, if necessary to maximum.
216 219​
217Some settings for Smearing 220​Some settings for Smearing
218"""""""""""""""""""""""""" 221​""""""""""""""""""""""""""
219 222​
220* For smoother smearing, decrease spacing. Remember that spacing is proportional to brush tip size. For a small round brush, 0.10 spacing is fine, but for mid-sized and large brushes, decrease spacing to 0.05 or less. 223​* For smoother smearing, decrease spacing. Remember that spacing is proportional to brush tip size. For a small round brush, 0.10 spacing is fine, but for mid-sized and large brushes, decrease spacing to 0.05 or less.
221 224​
222Some settings for Dulling 225​Some settings for Dulling
223""""""""""""""""""""""""" 226​"""""""""""""""""""""""""
224 227​
225* Lowering the spacing will also make the smudging effect stronger, so find a right balance. 0.10 for most mid-sized round brushes should be fine. 228​* Lowering the spacing will also make the smudging effect stronger, so find a right balance. 0.10 for most mid-sized round brushes should be fine.
226* Unlike Smearing, Dulling preserves the brush shape and size, so it won't "fade off" in size like Smearing brushes do. You can mimic that effect though with a simple size fade dynamic. 229​* Unlike Smearing, Dulling preserves the brush shape and size, so it won't "fade off" in size like Smearing brushes do. You can mimic that effect though with a simple size fade dynamic.
227 230​
228Textured blending 231​Textured blending
229^^^^^^^^^^^^^^^^^ 232​^^^^^^^^^^^^^^^^^
230 233​
231In this case, what I refer to as "Blending" here is simply using one of the following two dynamics: 234​In this case, what I refer to as "Blending" here is simply using one of the following two dynamics:
235​
232* Rotation set to Distance or Fuzzy 236​* Rotation set to Distance or Fuzzy
233 237​
234* And/or Scatter: 238​* And/or Scatter:
235 * For most mid-sized brushes you will probably want to lower the scatter rate to 0.50 or lower. Higher settings are okay for tiny brushes. 239​ * For most mid-sized brushes you will probably want to lower the scatter rate to 0.50 or lower. Higher settings are okay for tiny brushes.
236 * Note that Scatter picks colors within a certain distance, not the color directly under the brush (see :ref:`option_brush_tip`) 240​ * Note that Scatter picks colors within a certain distance, not the color directly under the brush (see :ref:`option_brush_tip`)
237 241​
238* Optional: Pile on size and other dynamics and vary brush tips In fact, the Color Smudge brush is not a blur brush, so smudging is not a very good method of "smooth" blending. To blend smoothly, you'll have better luck with: 242​* Optional: Pile on size and other dynamics and vary brush tips In fact, the Color Smudge brush is not a blur brush, so smudging is not a very good method of "smooth" blending. To blend smoothly, you'll have better luck with:
239* Building up the transition by painting with intermediate values, described later 243​* Building up the transition by painting with intermediate values, described later
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251~~~~~~~~~~~~~~~~~~~ 255​~~~~~~~~~~~~~~~~~~~
252 256​
253For this last section, Color Rate is on. 257​For this last section, Color Rate is on.
254 258​
255Layer options 259​Layer options
256^^^^^^^^^^^^^ 260​^^^^^^^^^^^^^
257 261​
258Before we get started, notice that you have several possibilities for your set up: 262​Before we get started, notice that you have several possibilities for your set up:
263​
259* Shading on the same layer 264​* Shading on the same layer
260* Shading on a separate layer, possibly making use of alpha-inheritance. The brush blends with the transparency of the layer it's on. This means: 265​* Shading on a separate layer, possibly making use of alpha-inheritance. The brush blends with the transparency of the layer it's on. This means:
261 266​
262 * If the area underneath is more of less uniform, the output is actually similar as if shading on the same layer 267​ * If the area underneath is more of less uniform, the output is actually similar as if shading on the same layer
263 268​
264 * But if the area underneath is not uniform, then you'll get fewer color variations. 269​ * But if the area underneath is not uniform, then you'll get fewer color variations.
265 270​
266* Shading on a separate layer, using Overlay mode. Use this only if you're fairly sure you don't need to adjust the layer below, or the colors may become a mess. 271​* Shading on a separate layer, using Overlay mode. Use this only if you're fairly sure you don't need to adjust the layer below, or the colors may become a mess.
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288* For the last solution, use colors that contrast highly with what you're using for best effect. For example, shade in the darkest shadow area first, or the lightest highlights, and use the color smudge brush for the contrasting color. 293​* For the last solution, use colors that contrast highly with what you're using for best effect. For example, shade in the darkest shadow area first, or the lightest highlights, and use the color smudge brush for the contrasting color.
289 294​
290.. image:: /images/en/Krita-tutorial5-III.1-3.png 295​.. image:: /images/en/Krita-tutorial5-III.1-3.png
291 296​
292Soft-shading 297​Soft-shading
293~~~~~~~~~~~~ 298​~~~~~~~~~~~~
294 299​
295Suppose you want more or less smooth color transitions. You can either: 300​Suppose you want more or less smooth color transitions. You can either:
301​
296* Color Rate as low as 0.10 for round brushes, higher with non fully opaque brush tips. 302​* Color Rate as low as 0.10 for round brushes, higher with non fully opaque brush tips.
297* Or set the Smudge Rate as low as 0.10 instead. 303​* Or set the Smudge Rate as low as 0.10 instead.
298* Or a combination of the two. Please try yourself for the output you like best. 304​* Or a combination of the two. Please try yourself for the output you like best.
299* Optional: turn on Rotation for smoother blending 305​* Optional: turn on Rotation for smoother blending
300* Optional: turn on Scatter for certain effects 306​* Optional: turn on Scatter for certain effects
301* Optional: fiddle with Size and Opacity dynamics as necessary. 307​* Optional: fiddle with Size and Opacity dynamics as necessary.
302 308​
303.. image:: /images/en/Krita-tutorial5-III.2-1.png 309​.. image:: /images/en/Krita-tutorial5-III.2-1.png
304 310​
305This remains, in fact, a so-so way of making smooth transitions. It's best to build up intermediate values instead. Here: 311​This remains, in fact, a so-so way of making smooth transitions. It's best to build up intermediate values instead. Here:
312​
306* I first passed over the blue area three times with a red color. I select 3 shades. 313​* I first passed over the blue area three times with a red color. I select 3 shades.
307* I color picked each of these values with Ctrl+click, then used them in succession 314​* I color picked each of these values with Ctrl+click, then used them in succession
308 315​
309.. image:: /images/en/Krita-tutorial5-III.2-2.png 316​.. image:: /images/en/Krita-tutorial5-III.2-2.png
310 317​
311Painting: thick oil style 318​Painting: thick oil style
312~~~~~~~~~~~~~~~~~~~~~~~~~ 319​~~~~~~~~~~~~~~~~~~~~~~~~~
313 320​
314Many of the included color smudge brush presets produce a thick oil paint-like effect. 321​Many of the included color smudge brush presets produce a thick oil paint-like effect.
315This is mainly achieved with the Smearing mode on. Basically: 322​This is mainly achieved with the Smearing mode on. Basically:
323​
316* Smearing mode with high smudge and color rates 324​* Smearing mode with high smudge and color rates
317** Both at 0.50 are fine for normal round brushes or fully opaque predefined brushes 325​ * Both at 0.50 are fine for normal round brushes or fully opaque predefined brushes
318** Up to 1.00 each for brushes with less density or non fully-opaque predefined brushes 326​ * Up to 1.00 each for brushes with less density or non fully-opaque predefined brushes
319 327​
320* Add Size/Rotation/Scatter dynamics as needed. When you do this, increase smudge and color rates to compensate for increased color mixing. 328​* Add Size/Rotation/Scatter dynamics as needed. When you do this, increase smudge and color rates to compensate for increased color mixing.
321 329​
322.. image:: /images/en/Krita-tutorial5-III.3-1.png 330​.. image:: /images/en/Krita-tutorial5-III.3-1.png
323 331​
324One thing I really like to do is to set different foreground and background colors, then turn on Gradient -> Fuzzy. Alternatively, just paint with different colors in succession (bottom-right example). 332​One thing I really like to do is to set different foreground and background colors, then turn on Gradient -> Fuzzy. Alternatively, just paint with different colors in succession (bottom-right example).
325 333​
326.. image:: /images/en/Krita-tutorial5-III.3-2.png 334​.. image:: /images/en/Krita-tutorial5-III.3-2.png
327 335​
328Here's some final random stuff. With pixel brushes, you can get all sorts of frill designs by using elongated brushes and setting the dynamics to rotation. You won't get that with Color Smudge Brushes. Instead you'll get something that looks more like... yarn. Which is cool too. Here, I just used oval brushes and rotation -> distance. 336​Here's some final random stuff. With pixel brushes, you can get all sorts of frill designs by using elongated brushes and setting the dynamics to rotation. You won't get that with Color Smudge Brushes. Instead you'll get something that looks more like... yarn. Which is cool too. Here, I just used oval brushes and rotation -> distance.
329 337​
330.. image:: /images/en/Krita-tutorial5-III.3-3.png 338​.. image:: /images/en/Krita-tutorial5-III.3-3.png
331 339​
332Painting: Digital watercolor style 340​Painting: Digital watercolor style
333~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 341​~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
334 342​
335When I say "digital watercolor", it refers to a style often seen online, i.e. a soft, smooth shading style rather than realistic watercolor. For this you mostly need the Dulling mode. A few things: 343​When I say "digital watercolor", it refers to a style often seen online, i.e. a soft, smooth shading style rather than realistic watercolor. For this you mostly need the Dulling mode. A few things:
344​
336* Contrary to the Smearing mode, you may want to lower opacity for normal round brushes to get a smoother effect, to 0.70 for example. 345​* Contrary to the Smearing mode, you may want to lower opacity for normal round brushes to get a smoother effect, to 0.70 for example.
337* Vary the brush tip fade value as well. 346​* Vary the brush tip fade value as well.
338* When using Scatter or other dynamics, you can choose to set smudge and color values to high or low values, for different outcomes. 347​* When using Scatter or other dynamics, you can choose to set smudge and color values to high or low values, for different outcomes.
339 348​
340.. image:: /images/en/Krita-tutorial5-III.4.png 349​.. image:: /images/en/Krita-tutorial5-III.4.png
341 350​
342Blurring 351​Blurring
343~~~~~~~~ 352​~~~~~~~~
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