The Perspective Tool is used to change the «perspective» of the active layer content, of a selection content or of a path. When you click on the image, according to the Preview type you have selected, a rectangular frame or a grid pops up around the selection (or around the whole layer if there is no selection), with a handle on each of the four corners. By moving these handles by click-and-drag, you can modify the perspective. At the same time, a «Transformation information» pops up, which lets you valid the transformation. At the center of the element, a circle lets you move the element by click-and-drag.
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This tool is not actually a perspective tool, as it doesn't impose perspective rules. It is better described as a distort tool. |
You can access to the Perspective tool in different ways:
From the image menu bar
/ ,
By clicking the tool icon:
in Toolbox,
By using the Shift+P key combination.
Normalmente, le opzioni degli strumenti vengono mostrate in una finestra agganciata al pannello degli strumenti, appena si attiva lo strumento. Se queste non ci sono, è possibile accedervi dalla barra del menu immagine tramite
→ → che apre la finestra delle opzioni dello strumento selezionato.
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These options are described in Transform tools common options. |
You can get a small knowledge about matrices in the Sezione 8.2, «Convolution Matrix».