diff --git a/reference_manual/brushes/brush_engines/color_smudge_engine.rst b/reference_manual/brushes/brush_engines/color_smudge_engine.rst index dd56b2ff0..440d0a236 100644 --- a/reference_manual/brushes/brush_engines/color_smudge_engine.rst +++ b/reference_manual/brushes/brush_engines/color_smudge_engine.rst @@ -1,364 +1,364 @@ .. meta:: :description: The Color Smudge Brush Engine manual page. .. metadata-placeholder :authors: - Wolthera van Hövell tot Westerflier - Raghavendra Kamath - Scott Petrovic - ValerieVK :license: GNU free documentation license 1.3 or later. .. index:: Brush Engine, Color Smudge Brush Engine, Color Mixing, Smudge .. _color_smudge_brush_engine: ========================= Color Smudge Brush Engine ========================= .. image:: /images/icons/colorsmudge.svg The Color Smudge Brush is a brush engine that allows you to mix colors by smearing or dulling. A very powerful brush engine to the painter. Options ------- * :ref:`option_brush_tip` * :ref:`blending_modes` * :ref:`option_opacity_n_flow` * :ref:`option_size` * :ref:`option_spacing` * :ref:`option_mirror` * :ref:`option_softness` * :ref:`option_rotation` * :ref:`option_scatter` * :ref:`option_gradient` * :ref:`option_airbrush` * :ref:`option_texture` Options Unique to the Color Smudge Brush ---------------------------------------- .. _option_color_rate: Color Rate ~~~~~~~~~~ How much of the foreground color is added to the smudging mix. Works together with :ref:`option_smudge_length` and :ref:`option_smudge_radius` .. image:: /images/en/Krita_2_9_brushengine_colorrate_04.png .. _option_smudge_length: Smudge Length ~~~~~~~~~~~~~ Affects smudging and allows you to set it to Sensors. There's two major types: .. image:: /images/en/Krita_2.9_brush_engine_smudge_length_03.png Smearing Great for making brushes that have a very impasto oil feel to them. Dulling Named so because it dulls strong colors. Using an arithmetic blending type, Dulling is great for more smooth type of painting. .. image:: /images/en/Krita_2.9_brushengine_smudge_length_01.png Strength Affects how much the smudge length takes from the previous dab its sampling. This means that smudge-length at 1.0 will never decrease, but smudge-lengths under that will decrease based on spacing and opacity/flow. .. image:: /images/en/Krita_2.9_brushengine_smudge_length_02.png .. _option_smudge_radius: Smudge Radius ~~~~~~~~~~~~~ The :guilabel:`Smudge Radius` allows you to sample a larger radius when using smudge-length in :guilabel:`Dulling` mode. The slider is percentage of the brush-size. You can have it modified with :guilabel:`Sensors`. .. image:: /images/en/Krita_2.9_brushengine_smudge_radius_01.png Overlay ~~~~~~~ Overlay is a toggle that determine whether or not the smudge brush will sample all layers (overlay on), or only the current one. Tutorial: Color Smudge Brushes ------------------------------ I recommend at least skimming over the first part to get an idea of what does what. Overview and settings ~~~~~~~~~~~~~~~~~~~~~ Overview: Smearing and Dulling ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The Color Smudge Brush offers 2 modes, accessible from the :guilabel:`Smudge Rate` section: * Smearing: This mode mixes colors by smudging ("smearing") the area underneath. * Dulling: In his mode, the brush "picks up" the color underneath it, mixes it with its own color, then paints with it. .. image:: /images/en/Krita-tutorial5-I.1.png Smudge Length ^^^^^^^^^^^^^ To better demonstrate the smudge function, I turned the color rate function off. .. image:: /images/en/Krita-tutorial5-I.2.png Common behaviors: * Unchecking the smudge rate function sets smudge rate to 1.00 (not 0.00) * Opacity: Below 0.50, there is practically no smudging left: keep opacity over 0.50. Differences: * 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. * 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. * 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. The other settings should be pretty obvious from the pictures, so I'll spare you some walls of text. Color Rate, Gradient and Blending modes ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. image:: /images/en/Krita-tutorial5-I.3.png Again, most of the settings behaviors should be obvious from the pictures. Just remember to keep :guilabel:`Opacity` over 0.50. Brush tips ^^^^^^^^^^ The Color Smudge Brush has all the same brush tip options as the Pixel Brush! .. image:: /images/en/Krita-tutorial5-I.4.png Just remember that the smudge effects are weaker when a brush tip's opacity is lower, so for low-opacity brush tips, increase the opacity and smudge/color rates. Scatter and other shape dynamics ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The Color Smudge Brush shares the following dynamics with the Pixel Brush: Opacity, Size, Spacing, Rotation, and Scatter. However, because of the Smudge effects, the outcome will be different from the Pixel Brush. In particular, the Scatter option becomes much more significant. .. image:: /images/en/Krita-tutorial5-I.5-1.png A few things to note: * Scattering is proportional to the brush size. It's fine to use a scattering of 5.00 for a tiny round brush, but for bigger brushes, you may want to get it down to 0.50 or less. * You may notice the lines with the :guilabel:`Smearing` option. Those are caused by the fact that it picked up the hard lines of the rectangle. * For scattering, the brush picks up colors within a certain distance, not the color directly under the paintbrush: .. image:: /images/en/Krita-tutorial5-I.5-2.png Other color behaviors: Gradient, Blending modes, Overlay mode ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Gradient """""""" Gradient is equivalent to the :menuselection:`Source --> Gradient` and :menuselection:`Color --> Mix` for the Pixel brush: the color will vary between the colors of the gradient. .. image:: /images/en/Krita-tutorial5-I.6-1.png You can either: * Leave the default :menuselection:`Foreground --> Background gradient` setting, and just change the foreground and background colors * Select a more specific gradient * Or make custom gradients. Blending Modes """""""""""""" Blending Modes work just like with the Pixel Brush. The color used though is the color from Color rate. Color Blending modes with the smudge brush are even harder to predict than with the pixel brush, so I'll leave you to experiment on your own. Overlay Mode """""""""""" By default, the Color Smudge Brush only takes information from the layer it is on. However, if you want it to take color information from all the layers, you can turn on the Overlay mode. Be aware though, that it does so by "picking up" bits of the layer underneath, which may mess up your drawing if you later make changes to the layer underneath. Use cases: Smudging and blending ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This part describes use cases with color rate off. I won't explain the settings for dynamics in detail, as you can find the explanations in the :ref:`Pixel Brush tutorial `. Smudging effects ^^^^^^^^^^^^^^^^ For simple smudging: * Pick the Color Smudge Brush. You can use either Smearing or Dulling. * Turn off Color Rate * Smudge away .. image:: /images/en/Krita-tutorial5-II.2.png When using lower opacity brush tips, remember to "compensate" for the less visible effects by increasing both :guilabel:`Smudge Rate` and :guilabel:`Opacity`, if necessary to maximum. Some settings for Smearing """""""""""""""""""""""""" * 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. Some settings for Dulling """"""""""""""""""""""""" * 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. -* 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. +* 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 through the simple size fade dynamic. Textured blending ^^^^^^^^^^^^^^^^^ In this case, what I refer to as "Blending" here is simply using one of the following two dynamics: * :guilabel:`Rotation` set to :guilabel:`Distance` or :guilabel:`Fuzzy` * And/or Scatter: * 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. * Note that Scatter picks colors within a certain distance, not the color directly under the brush (see :ref:`option_brush_tip`) -* 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: +* 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: * Building up the transition by painting with intermediate values, described later * Or using the "blur with feathered selection" method that I'll briefly mention at the end of this tutorial. I've tried to achieve smooth blending with Color Smudge brush by adding rotation and scatter dynamics, but honestly they looked like crap. However, the Color Smudge brush is very good at "textured blending": .. image:: /images/en/Krita-tutorial5-II.3.png Basically you can paint first and add textured transitions after. Use cases: Coloring ~~~~~~~~~~~~~~~~~~~ For this last section, :guilabel:`Color Rate` is on. Layer options ^^^^^^^^^^^^^ Before we get started, notice that you have several possibilities for your set up: * Shading on the same layer * 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: * If the area underneath is more of less uniform, the output is actually similar as if shading on the same layer * But if the area underneath is not uniform, then you'll get fewer color variations. * 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. .. image:: /images/en/Krita-tutorial5-III.1-1.png Issue with transparency """"""""""""""""""""""" The Color Smudge Brush blends with transparency. What this means is that when you start a new, transparent layer and "paint" on this layer, you will nearly always get less than full opacity. Basically: * It may look great when you're coloring on a blank canvas * But it won't look so great when you add something underneath .. image:: /images/en/Krita-tutorial5-III.1-2.png The solution is pretty simple though: * Make sure you have the area underneath colored in first: * With tinting, you already have the color underneath colored, so that's done * For painting, roughly color in the background layer first * Or color in the shape on a new layer and make use of alpha-inheritance * 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. .. image:: /images/en/Krita-tutorial5-III.1-3.png Soft-shading ~~~~~~~~~~~~ Suppose you want more or less smooth color transitions. You can either: * :guilabel:`Color Rate` as low as 0.10 for round brushes, higher with non fully opaque brush tips. * Or set the :guilabel:`Smudge Rate` as low as 0.10 instead. * Or a combination of the two. Please try yourself for the output you like best. * Optional: turn on :guilabel:`Rotation` for smoother blending * Optional: turn on :guilabel:`Scatter` for certain effects * Optional: fiddle with :guilabel:`Size` and :guilabel:`Opacity` dynamics as necessary. .. image:: /images/en/Krita-tutorial5-III.2-1.png This remains, in fact, a so-so way of making smooth transitions. It's best to build up intermediate values instead. Here: * I first passed over the blue area three times with a red color. I select 3 shades. * I color picked each of these values with :kbd:`Ctrl` + |mouseleft|, then used them in succession .. image:: /images/en/Krita-tutorial5-III.2-2.png Painting: thick oil style ~~~~~~~~~~~~~~~~~~~~~~~~~ Many of the included color smudge brush presets produce a thick oil paint-like effect. This is mainly achieved with the Smearing mode on. Basically: * Smearing mode with high smudge and color rates * Both at 0.50 are fine for normal round brushes or fully opaque predefined brushes * Up to 1.00 each for brushes with less density or non fully-opaque predefined brushes * Add Size/Rotation/Scatter dynamics as needed. When you do this, increase smudge and color rates to compensate for increased color mixing. .. image:: /images/en/Krita-tutorial5-III.3-1.png One thing I really like to do is to set different foreground and background colors, then turn on :menuselection:`Gradient --> Fuzzy`. Alternatively, just paint with different colors in succession (bottom-right example). .. image:: /images/en/Krita-tutorial5-III.3-2.png 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 :menuselection:`Rotation --> Distance`. .. image:: /images/en/Krita-tutorial5-III.3-3.png Painting: Digital watercolor style ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: * 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. * Vary the brush tip fade value as well. * When using :guilabel:`Scatter` or other dynamics, you can choose to set smudge and color values to high or low values, for different outcomes. .. image:: /images/en/Krita-tutorial5-III.4.png Blurring ~~~~~~~~ You can: * Paint then smudge, for mostly texture transitions * Or build up transitions by using intermediate color values If you want even smoother effects, well, just use blur. Gaussian blur to be exact. .. image:: /images/en/Krita-tutorial5-III.5.png And there you go. That last little trick concludes this tutorial. diff --git a/reference_manual/krita_4_preset_bundle.rst b/reference_manual/krita_4_preset_bundle.rst index 37368d328..c0c145b5c 100644 --- a/reference_manual/krita_4_preset_bundle.rst +++ b/reference_manual/krita_4_preset_bundle.rst @@ -1,175 +1,175 @@ .. meta:: :description: Overview of the Krita 4.0 preset bundle. .. metadata-placeholder :authors: - David Revoy - Scott Petrovic - Wolthera van Hövell tot Westerflier :license: GNU free documentation license 1.3 or later. .. index:: Resources .. _krita_4_preset_bundle: ============================== Krita 4 Preset Bundle Overview ============================== .. image:: /images/en/Krita4_0_brushes.jpg Krita comes with a large collection of brush presets. This collection was designed with many considerations: * Help the beginner and the advanced user with brushes that are ready-to-use. * Propose tools for the various ways Krita is used: Comic inking and coloring, Digital Painting, Mate Painting, Pixel Art, 3D texturing. * Show a sample of what the brush engines can do. This page illustrates and describes the included default brush presets in Krita 4. Erasers ------- * The large one is for removing large portions of a layer (eg. a full character) * The small one is designed to use when drawing thin lines or inking. It has a very specific shape so you will notice with the square shape of your cursor you are in eraser-mode. * The soft one is used to erase or fade out the part of a drawing with various levels of opacity. .. image:: /images/en/Krita4_a-brush-family.png Basics ------ The basic brush family all use a basic circle for the brush tip with a variation on opacity, flow or size. They are named Basic because brushes of this type are the fundamental stones of every digital painting program. These brushes will work fast since they use simple properties. .. image:: /images/en/Krita4_b-brush-family.jpg Pencils ------- These presets tends to emulate the effect of pencil on paper. They all have a thin brush that uses a paper-texture. Some focus on being realistic to help with correcting a pencil scan. Some focus more on showing the effects on your computer monitor. The two last (Tilted/Quick Shade) assist the artist to obtain specific effects; like quickly shading a large area of the drawing without having to manually crosshatch a lot of lines. .. image:: /images/en/Krita4_c-brush-family.jpg Inking ------ For the black & white illustrator or the comic artist. The Inking brushes help you produce line art and high contrast illustrations. * Ink Precision: A thin line designed to take notes or draw tiny lines or details. * Ink Fineliner: A preset with a regular width to trace panels, technical details, or buildings. * Ink GPen: A preset with a dynamic on size to ink smoothly. * Ink Pen Rough: A preset for inking with a focus on having a realistic ink line with irregularities (texture of the paper, fiber of paper absorption). * Ink Brush Rough: A brush for inking with also a focus on getting the delicate paper texture appearing at low pressure, as if the brush slightly touch paper. * Ink Sumi-e: A brush with abilities at revealing the thin texture of each bristle, making the line highly expressive. .. image:: /images/en/Krita4_d-brush-family.jpg Markers ------- A small category with presets simulating a marker with a slight digital feeling to them. .. image:: /images/en/Krita4_e-brush-family.jpg Dry Painting ------------ The Dry Painting category is full set of brushes that appear like bristles. They do not interact with the color already on the canvas; that's why they are called "dry". They work as if you were painting on a dry artwork: the color replace, or overlay/glaze over the previous painting stroke. This brush emulates techniques that dry quickly as tempera or acrylics. .. image:: /images/en/Krita4_f-brush-family.jpg Dry Painting Textured --------------------- -Almost the same family as the previous one, except this brush presets lay down a textured effect. They simulate this painting effects you can obtain with very thick painting on a brush caressing a canvas with fabric texture. They help to build painterly background or add life in the last bright touch of colors. +Almost the same family as the previous one, except these brush presets lay down a textured effect. They simulate the painting effect you can obtain with very thick painting on a brush caressing a canvas with fabric texture. This helps to build painterly background or add life in the last bright touch of colors. .. image:: /images/en/Krita4_g-brush-family.jpg Chalk, Pastel and Charcoal -------------------------- Still part of the dry family. These brushes focus on adding texture to the result. The type of texture you would obtain by using a dry tool such as chalk, charcoal or pastel and rubbing a textured paper. .. image:: /images/en/Krita4_h-brush-family.jpg Wet painting ------------ This family of brushes is wet in a sense they all interact with the color on the canvas. It triggers the feeling of having a wet artwork and mixing color at the same time. The category has variations with bristle effects or simple rounded brushes. .. image:: /images/en/Krita4_i-brush-family.jpg Watercolors ----------- Simulating real watercolors is highly complex. These brushes only partially simulate the watercolor texture. Don't expect crazy pigment diffusion because these brushes are not able to do that. These brushes are good at simulating a fringe caused by the pigments and various effects. .. image:: /images/en/Krita4_j-brush-family.jpg Blender ------- These brushes don't paint any colors. They interact with the color you already have on the canvas. Don't expect them to have any effect on a white page. All these presets give a different result with how they smudge or smear. It helps to blend colors, blur details, or add style on a painting. Smearing pixels can help with creating smoke and many other effects. .. image:: /images/en/Krita4_k-brush-family.jpg Adjustments ----------- This family of airbrushes has variations on the blending modes. Different blending modes will give different results depending on the effect you are trying to achieve. * Color - Can help to re-color or desaturate a part of your artwork. It changes only the hue and saturation, not the value, of the pixels. * Dodge - Will assist you in creating effects such as neon or fire. * Lighten - Brightens only the area with the selected color: a good brush to paint depth of field (sfumato) and fog. * Multiply - Darkens all the time. A good brush to create a quick vignette effect around an artwork, or to manage big part in shadow. * Overlay - Burn helps to boost the contrast and overlay color on some areas. .. image:: /images/en/Krita4_l-brush-family.jpg Shapes ------ -Painting with ready-made shapes can help concept artists create happy-accidents and stimulate the imagination. The Shape Fill tool is a bit specific: you can draw a silhouette of shape and Krita fills it in real time. Painting shapes over an area help fill it with random details. This is useful before painting over with more specific objects. +Painting with ready-made shapes can help concept artists create happy-accidents and stimulate the imagination. The Shape Fill tool is a bit specific: you can draw a silhouette of shape and Krita fills it in real time. Painting shapes over an area helps fill it with random details. This is useful before painting over with more specific objects. .. image:: /images/en/Krita4_t-brush-family.jpg Pixel ----- You might believe this section is specific to pixel-artist, but in many situations dealing with specific pixels are needed to make corrections and adjustments even on normal paintings. A thin 1px brush can be used to trace guidelines. A brush with aliasing is also perfect to fix the color island created by the Coloring-mask feature. .. image:: /images/en/Krita4_u-brush-family.jpg Experimental ------------ When categorizing brushes, there is always a special or miscellaneous category. In this family of brushes you'll find the clone brush along with brushes to move, grow, or shrink specific areas. .. image:: /images/en/Krita4_v-brush-family.jpg Normal Map ---------- Useful for 3D programs and texture artists. If your tablet supports tilting and rotation this brush will allow you to paint on your normal map using your brush rotation and orientation. You can "sculpt" your details in the texture with the different colors. Each color will map to an angle that is used for 3D lighting. It works well on pen-tablet display (tablet with a screen) as you can better sync the rotation and tilting of your stylus with the part of the normal map you want to paint. .. image:: /images/en/Krita4_w-brush-family.jpg Filters ------- Krita can apply many of its filters on a brush thanks to the filter brush engine. The result is usually not efficient and slow, but a good demo of the ability of Krita. .. image:: /images/en/Krita4_x-brush-family.jpg Textures -------- Adding textures is not only useful for the 3D artist or video-game artist: in many artworks you'll save a lot of time by using brushes with random patterns. .. image:: /images/en/Krita4_y-brush-family.jpg Stamps ------ The stamps are a bit similar to the texture category. Stamps often paint a pattern that is easier to recognize than if you tried to paint it manually. The results appear more as decorations than for normal painting methods. .. image:: /images/en/Krita4_z-brush-family.jpg diff --git a/tutorials/krita-brush-tips/caustics.rst b/tutorials/krita-brush-tips/caustics.rst index 7d1c660eb..0d2f54c8b 100644 --- a/tutorials/krita-brush-tips/caustics.rst +++ b/tutorials/krita-brush-tips/caustics.rst @@ -1,94 +1,94 @@ .. meta:: :description lang=en: Creating the caustic effects of underwater with Krita .. metadata-placeholder :authors: - Wolthera van Hövell tot Westerflier :license: GNU free documentation license 1.3 or later. .. _caustics: ==================== Brush Tips: Caustics ==================== Question -------- Could you do a tutorial on how to recreate the look of light refracting in water? Sure, caustics, it’s not like it’s the most complicated effect known to CG graphics… Okay, so the first thing is that light effects never work in isolation: you need to be spot on with colors and other effects to make it work. So we first need to recreate the surroundings a bit. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_01.png :alt: Background gradient for creating caustic effects :width: 800 We set up something simple with gradients. Some radial, some linear. The eraser mode works with gradients as well, so use that to your advantage! We create a simple smudge brush by taking smudge_soft and adding scattering to it, as well as an s-curve on the smudge length. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_02.png :alt: Brush Settings And then we build up a quick base: .. image:: /images/en/brush-tips/Krita-brushtips-caustics_03.gif :alt: building a base for the caustic effects from the brush -Note how the smudge brush here is used not just to mix areas, but also to create definition of borders by lowering the scatter.(If you reverse the pressure curve on the scatter, this’ll be easily done by increasing the pressure on the stylus) +Note how the smudge brush here is used not just to mix areas, but also to create definition of borders by lowering the scatter. (If you reverse the pressure curve on the scatter, this’ll be easily done by increasing the pressure on the stylus) Now for the real magic. Caustics are a bit hairy, which means it’s a good candidate for the sketch brush engine. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_04.png :alt: Settings for the brush to create the caustic lines -Take *sketch_ink_big*, and add pressure to the ‘line-width’ while setting ‘density’ under the brush-size to 100%. This makes it extra hairy. +Take *sketch_ink_big*, and add pressure to the :guilabel:`Line width` while setting :guilabel:`Density` under the :guilabel:`Brush size` to 100%. This makes it extra hairy. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_05.png :alt: Set color blending mode the color dodge -Set the brush blending mode to ‘Color Dodge’, and select the color of our caustics. Color dodge will cause a move towards white by applying special dodge color maths to our brush dabs instead of the ‘normal’ averaging color maths. +Set the brush blending mode to :guilabel:`Color Dodge`, and select the color of our caustics. Color dodge will cause a move towards white by applying special dodge color maths to our brush dabs instead of the :guilabel:`Normal` averaging color maths. Outside of pressure for making varying strokes, glowiness for the light and extra density, we also want to have the size of the line decrease the further away it is… .. image:: /images/en/brush-tips/Krita-brushtips-caustics_06.png :alt: Setup the perspective assistant Then, use the assistant editor tool to add a perspective grid. It doesn’t need to be perfectly in perspective, because we’ll only use it for the perspective sensor. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_07.png :alt: Select the perspective parameter in the brush settings -This will cause the brush to give smaller lines the further it registers on the perspective assistant.(It only works per single perspective assistant, making it not very good for chaining, but for our purpose this is good.) +This will cause the brush to give smaller lines the further it registers on the perspective assistant. (It only works per single perspective assistant, making it not very good for chaining, but for our purpose this is good.) -Then you start slowly building up your lines. (Make sure to make a copy of the layer)(The color dodge blending doesn’t work well on a separate layer, so do it on one that also has the ground on it). +Then you start slowly building up your lines. (Make sure to make a copy of the layer. The color dodge blending doesn’t work well on a separate layer, so do it on one that also has the ground on it.) .. image:: /images/en/brush-tips/Krita-brushtips-caustics_08.png :alt: painting the caustics -Make sure to try and follow the shapes you made.(*I failed at this*) The great thing about the sketch brush is that it causes those little ‘melt-togethers’ where two lines cross. This is only per stroke, so make a lot of long ongoing strokes with this brush to make use of it. +Make sure to try and follow the shapes you made. (*I failed at this*) The great thing about the sketch brush is that it causes those little ‘melt-togethers’ where two lines cross. This is only per stroke, so make a lot of long ongoing strokes with this brush to make use of it. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_09.png :alt: adding a little gradient Then take the gradient tool, and set the blending mode to color and the paint tool to a light blue, so we can get in the bluish atmospheric effect. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_10.png :alt: Adding some atmospheric effect -Then use the airbrush_pressure with the line tool to make some light-shafts of different sizes on a separate layer. (Don’t forget you can use the eraser mode to for subtle erasing with the line-tool as well) +Then use the airbrush_pressure with the line tool to make some light-shafts of different sizes on a separate layer. (Don’t forget you can use the eraser mode for subtle erasing with the line tool as well) .. image:: /images/en/brush-tips/Krita-brushtips-caustics_11.png :alt: Add some light shafts Set the blending mode to color dodge and lower the opacity. .. image:: /images/en/brush-tips/Krita-brushtips-caustics_12.png :alt: change the blend mode to color dodge of the layer Finally, polish the piece with the airbrush tool and some local color picking. .. figure:: /images/en/brush-tips/Krita-brushtips-caustics_13.png :alt: final polish Final Result