5.5. Medida

Figura 14.174. Herramienta de medida

Herramienta de medida

The Measure Tool is used to gain knowledge about pixel distances in your working image. By clicking and dragging the mouse button, you can determine the angle and number of pixels between the point of click and where the mouse pointer is located. The information is displayed on the status bar or can also be displayed in the Info Window.

A common use case for Measure is to calculate the angle of rotation when horizon is uneven on a photo. Since GIMP-2.10.4, you no longer have to perform the rotation manually to straighten horizon: after measuring the angle, just click the new Straighten button.

This button can be used in straightening horizontal or vertical lines up: the starting point comes with a small bar that shows the direction.

Cuando se pasa el puntero del ratón sobre el punto final se convierte en un punto móvil. Si se pulsa se reanuda la medida.

5.5.1. Barra de estado

La información se muestra en la barra de estado, en la parte inferior de la ventana de la imagen:

  • La distancia entre el punto original y el puntero del ratón, en píxeles.

  • Ángulo, en cada cuadrante, de 0° a 90°.

  • Coordenadas relativas del puntero al punto original.

5.5.2. Activar la herramienta

  • You can get to the Measure from the image-menu through: ToolsMeasure,

  • o al pulsar el icono de la herramienta: en la caja de herramientas.

5.5.3. Teclas modificadoras (predeterminadas)

Mayús

While holding down the Shift key, click and drag from an existing endpoint to create a second measurement line from this endpoint. The angle between the two lines will be displayed. Any endpoint can be moved by clicking and dragging. So, you can measure any angle on the image:

Figura 14.175. Shift modifier

Shift modifier

Click on start point and drag following a side of the angle.

Shift modifier

Then, Shift-click on start point and drag following the other side of the angle: you get the value of this particular angle.


Ctrl

Pulsar la tecla Ctrl pone la herramienta en modo línea recta obligada. La orientación de la línea va forzada al múltiplo más cercano de 15 grados.

Ctrl key pressed and click on an end point creates a horizontal guide. The mouse pointer goes with the icon.

In Horizontal or Vertical Orientation modes, Ctrl also toggles between Horizontal and Vertical.

Alt

Alt key and click on an end point creates a vertical guide.

Ctrl+Alt

Esta combinación de teclas y pulsar sobre una línea de medida permite mover la medida.

La combinación de teclas Ctrl+Alt y pulsar sobre un punto final crea una guía vertical y otra horizontal.

5.5.4. Opciones

Figura 14.176. Opciones de la herramienta de Medida

Opciones de la herramienta de Medida

Orientación (Ctrl)

In the Auto mode (default), Straighten will snap to the smallest angle between the measure line and the vertical or horizontal direction. Horizontal and Vertical allow to override this behavior by specifying explicitly what it should be.

Usar la ventana de información

This option will display an Info Window dialog that details the measure tool results. The results are more complete than on the status bar.

Enderezar

Transform, Interpolation, and Clipping are treated in Sección 3.1, “Características comunes”. Here is an example for straightening a path:

Imagen original

Dibujar ruta

Make path visible

Draw measure line on the segment you want to straighten

Enderezar

Figura 14.177. Straighten clipping options

Straighten clipping options

Draw measure line

Straighten clipping options

Straighten with Adjust option

Straighten clipping options

Straighten with Clip option


Straighten with Crop to result option

Straighten with Crop with aspect option

Straighten: click on this button to perform straightening.

5.5.5. Medir superficies

No se pueden medir superficies directamente, pero se puede usar el histograma que proporciona el número de píxeles en una selección.