2.4. Laisvo pažymėjimo įrankis (lasas)

Pav. 14.17. Laisvo pažymėjimo piktograma įrankinėje

Laisvo pažymėjimo piktograma įrankinėje

The Free Selection tool, or Lasso, lets you create a selection by drawing it with the pointer.

Since GIMP-2.6, you can use it in two ways. First create the starting point clicking on your image. Then,

In both cases, double clicking on the end point closes the selection with a straight line.

In polygonal mode, this selection is a preliminary selection; ants are marching, but the small yellow circle is still present: you can copy the selection and, pressing the Backspace key, you return to the previous selection step (re-open the shape), and you can edit the selection.

Press Enter or double click inside the shape to validate the selection.

Pressing and releasing the mouse pointer allows you to mix free hand segments and polygonal segments. You can go outside the edge of the image display and come back in if you want to.

The Lasso is often a good tool to use for roughing in a selection; it is not so good for precise definition. Experienced users find that it is often convenient to begin with the lasso tool, but then switch to QuickMask mode for detail work.

Daugiau informacijos apie pažymėjimus ir kaip jie naudojami programoje GIMP rasite sekcijoje Pažymėjimai. Informaciją apie visiems pažymėjimo įrankiams būdingas funkcijas rasite sekcijoje Pažymėjimo įrankiai.

[Pastaba] Pastaba

Laisvo pažymėjimo įrankį daug paprasčiau naudoti naudojant planšetę, o ne pelę.

Pav. 14.18. Mixing free hand segments and polygonal segments

Mixing free hand segments and polygonal segments

2.4.1. Activating the tool

You can access the Lasso Tool in different ways:

  • From the image menu bar ToolsSelection ToolsFree Select,

  • by clicking on the tool icon in the ToolBox,

  • by using the keyboard shortcut F.

2.4.2. Modifikavimo klavišai

The Free Select tool has key modifiers that affect all selection tools in the same way. See Selection Tools for help with these.

Backspace returns to previous selection step (removes last selection segment), Escape cancels all selection segments.

2.4.3. Įrankio valdymas

Informaciją, kaip perkelti pažymėjimą, galite rasti sekcijoje Pažymėjimų perkėlimas.

Pav. 14.19. Rough selection with the Free Selection tool.

Rough selection with the Free Selection tool.

2.4.4. Parinktys

Pav. 14.20. Laso įrankio parinktys

Laso įrankio parinktys

Normally, tool options are displayed in a window attached under the Toolbox as soon as you activate a tool. If they are not, you can access them from the image menu bar through WindowsDockable WindowsTool Options which opens the option window of the selected tool.

Laisvo pažymėjimo įrankis neturi jokių specialių įrankio parinkčių, tik tas, kurios veikia visus pažymėjimo įrankius vienodai. Daugiau informacijos apie jas rasite sekcijoje Pažymėjimo įrankiai.

Since GIMP-2.10.12, selection modes work differently. Marching ants come with a continuous line, meaning that the selection is not validated yet and that you can still change the selection shape (mouse pointer comes with the Move icon). But you can't use (holding it pressed) Shift, Ctrl...) yet. You have to hit the Enter key. Then you can use (holding them pressed) Shift to add a selection, Ctrl to subtract a selection, Shift + Ctrl to intersect two selections. When you are satisfied with your changes, hit Enter key to validate the selection.