Layers

Introduction to Layers

Imagine you are drawing a picture using pencils and paper. You might start by drawing a sketch of your subject lightly with a pencil. Then, you might want to color in the background with a blue colored pencil. Finally, you may want to add details and color to the subject with different colored pencils.

Layers \index{Layers} in Krita work similarly to drawing with different colored pencils on a paper. Each layer is like a transparent sheet of paper that you can draw on without affecting the layers below or above it. You can draw and color on one layer without worrying about making unwanted marks on the other layers.

The layer docker in Krita allows you to organize and manage the different elements of your artwork on separate layers, making it easier to work with complex compositions.

Layers Docker
![Layers Docker](public/assets/graphic/layers_docker.jpg)

If you do not see the layers docker, you can open it by selecting “Layer” from the top menu bar and then selecting “Show Layer Docker” from the dropdown menu.

Overall, layers in Krita allow you to work on different parts of your artwork separately without affecting the rest of the drawing. It is like having multiple sheets of paper on top of each other with the added ability to easily make changes to each layer without starting over.

Creating Layers

You can create new layers in Krita in a few different ways, depending on your preference. Here are some examples:

  1. Click on the “New Layer” button in the Layers docker. This will create a new layer above the currently selected layer.

    New Layer Button
    ![New Layer Button](public/assets/graphic/new_layer_button.jpg)
  2. In the toolbar, select “Layer” then select “New” and choose the “Paint Layer” menu option

    Create New Layer from Toolbar
    ![Create New Layer for Toolbar](public/assets/graphic/new_layer_toolbar.jpg)

Activity: Creating Layers

  1. Open Krita and create a new document.
  2. Use the freehand brush tool to draw a simple shape, like a circle or square, on the canvas.
  3. Create a new layer.
  4. Draw another shape on the new layer, using a different color or brush size than the first shape.

Deleting Layers

If you want to delete a layer in Krita:

  1. Select the layer you want to delete in the Layers docker.

  2. Click the “Delete Layer” button at the bottom of the docker.

Delete layer button
![Delete Layer Button](public/assets/graphic/delete_layer.jpg)

Activity: Deleting a Layer

  1. Open the document you created in the previous exercise.
  2. Use the layer docker to delete the layer you created earlier.
  1. Save the changes you made to the document.

Duplicating Layers

If you want to duplicate a layer in Krita, you can also do this in a few different ways. Here are some examples:

  1. Select the layer you want to duplicate in the Layers docker, then click on the “Duplicate Layer” button at the bottom of the docker.
  2. Right-click on the layer you want to duplicate in the Layers docker, then select “Duplicate Layer”.
  3. Press Ctrl+J (or Cmd+J on a Mac) on your keyboard while the layer you want to duplicate is selected.

Activity: Duplicating a Layer

  1. Open the document you created in the “Creating Layers” Activity.
  2. Use the layer docker to duplicate the layer you created earlier.
  3. Use the freehand brush tool to draw an image on the duplicated layer.

Layer Properties

Layer properties \index{Layer properties} in Krita are settings that adjust how your layers look and behave. The following are some examples of layer properties and how they work:

Opacity \index{Opacity} is a layer property that controls how transparent or opaque a layer is. If a layer has low opacity, it will be more transparent, and you can see through it. If a layer has high opacity, it will be more opaque and you won’t be able to see through it as easily. You can use opacity to create a subtle effect, like making a shadow on a layer or fading out an image in the background.

Layer Opacity
![Layer Opacity](public/assets/graphic/opacity.jpg)

Visibility \index{Visibility} is a layer property that controls whether or not a layer is visible or invisible. If a layer is visible, you can see it on the canvas. If a layer is invisible, you can not see it on the canvas. This can be useful when you want to temporarily hide a layer to focus on another layer, or when you want to see what the drawing looks like without a certain layer.

Layer Visibility
![Layer Visibility](public/assets/graphic/visibility.jpg)

Locking a layer \index{Locking a layer} is a property that prevents changes from being made to the layer accidentally. For example, you can lock the sketch layer to prevent it from being moved or edited while you’re working on another layer. You can also lock a layer’s transparency to prevent changes from being made to the layer’s transparency.

Locking Layer
![Locking Layer](public/assets/graphic/lock_layer.jpg)

Layer properties in Krita are a set of tools that allow you to adjust and fine-tune each layer to create the desired effect. By adjusting the layer properties, you can create a variety of effects and styles in your artwork.

Activity: Locking a layer

  1. Open Krita, and create a new document.
  2. Use the layer docker to create a new layer.
  3. Draw an image on the new layer using the freehand brush tool.
  4. Lock the layer by clicking on the lock icon next to the layer name in the layer docker.
  5. Try to draw on the locked layer using the freehand brush tool and observe what happens.

Activity: Changing Layer Visibility

  1. Open the document you created in the previous activity.
  2. Use the layer docker to toggle the visibility of the layer you created earlier.
  3. Try to draw on the hidden layer using the freehand brush tool and observe what happens.
  4. Toggle the visibility of the layer again to reveal your drawing.

Activity: Changing Layer Opacity

  1. Open the document you created in the first activity.
  2. Use the layer docker to adjust the opacity of the layer you created earlier.
  3. Draw an image on the adjusted layer using the freehand brush tool.
  4. Experiment with different opacity values to see how they affect the transparency of your drawing.

Layer Effects

Layer effects \index{Layer effects} in Krita are tools that allow you to add different types of visual effects to your layers, such as shadows, glows, and outlines. These effects can make your artwork stand out and appear more polished.

For example, you can add a drop shadow effect to make your drawing appear as if it has a shadow behind it, or add a glow effect to make it look like it’s glowing. You can also add a stroke effect to create an outline around your drawing, or a bevel effect to create a 3D effect.

Think of layer effects like adding different toppings to your favorite pizza. Each topping changes the appearance and taste of the pizza, just like layer effects change the appearance of your drawing.

To apply a layer effect in Krita, you can select the layer you want to apply the effect to, and then click on the “Layer Style” button in the layer docker. From there, you can choose the effect you want to apply and adjust its settings to achieve the desired effect.

Here are some examples of layer effects you can apply in Krita:

  1. A drop shadow effect adds a shadow to the edge of an object, making it appear as though it is floating above the surface it is on. You can add a drop shadow effect by following these steps:

    1. Click on the “Layer Style” button in the Layers docker.
    2. Choose “Drop Shadow” from the menu of layer effects.
    3. Adjust the settings for the drop shadow effect, including the distance, opacity, and angle of the shadow, until you are happy with the result.
    Drop Shadow Effect
    ![Drop Shadow Effect](public/assets/graphic/drop_shadow_effect.jpg)
  2. An inner shadow effect adds a shadow to the inside edge of an object, making it appear as though it is inset or pressed into the surface it is on.

    1. Click on the “Layer Style” button in the Layers docker.
    2. Choose “Inner Shadow” from the menu of layer effects.
    3. Adjust the settings for the inner shadow effect, including the distance, opacity, and angle of the shadow, until you are happy with the result.
    Inner Shadow Effect
    ![Inner Shadow Effect](public/assets/graphic/inner_shadow_effect.jpg)
  3. An outer glow effect adds a soft, glowing halo around the edge of an object, making it appear as though it is emitting light.

    1. Click on the “Layer Style” button in the Layers docker.

    2. Choose “Outer Glow” from the menu of layer effects.

    3. Adjust the settings for the outer glow effect, including the size, opacity, and color of the glow, until you are happy with the result.

To apply a layer effect in Krita, first select the layer you want to apply the effect to, then click on the “Layer Style” button in the “Layers” docker. From there, you can choose the type of effect you want to apply and adjust its settings to your liking.

Layer effects in Krita are a fun and easy way to add different visual effects to your artwork, making it stand out and look more polished.

Activity: Create Drop Shadow Effect

Add a drop shadow effect to your digital painting or drawing in Krita to create depth and visual interest. Experiment with different settings to achieve different effects.

Activity: Create Inner Shadow Effect

Apply an inner shadow effect to an element in your digital painting or drawing using Krita to create a sense of depth. Adjust the shadow settings to achieve different effects.

Activity: Create Outer Glow Effect

Add an outer glow effect to an element in your digital painting or drawing using Krita to create a subtle or dramatic lighting effect. Experiment with the glow settings to achieve different results.

Activity: Create Inner Glow Effect

Apply an inner glow effect to an element in your digital painting or drawing using Krita to create a soft or radiant lighting effect. Adjust the glow settings to achieve different results.

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Putting It All Together

  1. Open Krita, and create a new document.
  2. Use the layer docker to create a new layer.
  3. Use the freehand brush tool to draw a simple shape on the new layer.
  4. Duplicate the layer by right-clicking on the layer in the layer docker and selecting “Duplicate Layer”.
  5. Select the duplicated layer and apply a drop shadow effect to it.
  6. Select the original layer and apply a stroke effect to it, with a color of your choice.
  7. Duplicate the original layer again, and select the new duplicated layer.
  8. Apply a bevel effect to the new duplicated layer to create a 3D effect.
  9. Use the layer properties in the layer docker to adjust the opacity of the original layer.
  10. Use the move tool to adjust the position of all layers to create an interesting composition.
  11. Save your artwork.
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Vocabulary Review

TermsDefinitions
layers-
layer propertiessettings used to adjust how the layers in a digital image look and behave
opacitya layer property that controls how transparent or opaque a layer is
visibilitya layer property that controls whether or not a layer is visible or invisibl
locking a layera layer property that prevents changes from being made to a layer accidentally
layer effectsa set of special tools that allow creators to add different visual effects to layers, such as shadows, glows, and outlines
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Review Questions

\begin{enumerate}[1.] \item What are “layers” in Krita? \begin{enumerate}[(a)] \item Different brushes and tools available for painting \item The canvas where you create your artwork \item Independent and stackable sheets for organizing and editing artwork \item Preset collections of colors and gradients \end{enumerate}

\item In Krita, what can you modify using "layer properties"?
\begin{enumerate}[(a)]
    \item The size and resolution of the canvas
    \item The opacity and blending mode of a layer
    \item The color palette used in the artwork
    \item The shape and position of brushes
\end{enumerate}

\item What does "opacity" refer to in Krita?
\begin{enumerate}[(a)]
    \item The overall brightness of the artwork
    \item The clarity and sharpness of lines and shapes
    \item The degree of transparency of a layer or brush stroke
    \item The arrangement and order of layers in the stack
\end{enumerate}

\item How is "visibility" of a layer controlled in Krita?
\begin{enumerate}[(a)]
    \item By adjusting the layer's color and saturation
    \item By selecting a specific layer effect for enhanced visibility
    \item By toggling the visibility icon/checkbox of the layer
    \item By resizing and transforming the layer
\end{enumerate}

\item What are "layer effects" in Krita?
\begin{enumerate}[(a)]
    \item Advanced filters and adjustments applied to individual layers
    \item Different blending modes available for brush strokes
    \item Special brushes for adding texture and lighting effects
    \item Customizable shapes and patterns for layer masking
\end{enumerate}

\item What does it mean to "lock" a layer in Krita?
\begin{enumerate}[(a)]
    \item Preventing any changes or modifications to the layer content
    \item Restricting the layer to a specific blending mode
    \item Disabling the visibility of the layer temporarily
    \item Enabling collaboration and editing permissions for multiple users
\end{enumerate}

\end{enumerate}