### 5.3. Cambiar el tamaño del pincel

All brushes have a variable size that can be changed.

Puede cambiar el tamaño del pincel de varias maneras:

- Using the Size slider in the tool options. Pencil, Paintbrush, Eraser, Airbrush, Clone, Heal, Perspective Clone, Blur/Sharpen and Dodge/Burn tools have a slider to vary the brush size.

- Al usar las teclas de atajo de teclado predeterminadas para cambiar el tamaño de una herramienta:

  - Decrease size by 1: [

  - Increase size by 1: ]

  - Decrease size by 10: {

  - Increase size by 10: }

- Al usar las acciones predeterminadas de la rueda de desplazamiento del ratón para cambiar el tamaño de una herramienta:

  - Reducir el tamaño en 1: Ctrl+Alt+Rueda de desplazamiento hacia abajo

  - Aumentar el tamaño en 1: Ctrl+Alt+Rueda de desplazamiento hacia arriba

- By configuring the mouse wheel behavior in the Input Controllers preferences:

  1. En la ventana principal de GIMP, pulsar sobre Editar → Preferencias.

  2. En la columna izquierda de la ventana nueva, seleccione Dispositivos de entrada → Controladores de entrada.

  3. The Additional Input Controllers preferences are displayed with two columns: Available Controllers and Active Controllers.

     En la columna Controladores activos, doble pulsación en el botón Rueda principal del ratón.

  4. The Configure Input Controller dialog opens.

     In the left column Event, select the entry Scroll Up.

  5. Click the Edit event button (at the bottom middle of the list).

  6. The Select Controller Event Action dialog opens.

     In the Action column, expand the tools item.

  7. In the left column Action, select Tool's Size: Increase Relative, then click the OK button.

  8. Now the Scroll Up event is associated with the action tools-size-increase-percent.

  9. Cerrar la ventana.

  10. With the same method, configure Scroll Down to be associated with Tool's Size: Decrease Relative.

  11. Click the OK button of the main window of Preferences.

  After these somewhat long explanations, you can use your mouse wheel to vary brush size. For example, choose the pencil tool with the Circle brush. Set the pointer in the image window, and use the mouse wheel in both directions to see the Circle shrinking or stretching.

- By configuring the behavior of the Up and Down arrow keys of the keyboard:

  El método es similar al de la rueda del ratón. Las únicas diferencias son:

  - In the column Active Controllers, double-click Main Keyboard.

  - In the column Event, edit the entry Cursor Up for the first key, and Cursor Down for the second key.

  - Then, use the Up and Down arrow keys of the keyboard. The result is the same as with the mouse wheel.

5.2. Creating animated brushes |  | 5.4. Crear un pincel rápidamente

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