4.8. 透视
| 4. Transform Tools |

### 4.8. 透视

图 14.130. Perspective tool

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.

| 注意
This tool is not actually a perspective tool, as it doesn't impose perspective rules. It is better described as a distort tool.

#### 4.8.1. Activating the Tool

You can access the Perspective tool in different ways:

- From the image menu bar Tools/ Transform Tools Perspective,

- By clicking the tool icon: in Toolbox,

- By using the Shift+P key combination.

#### 4.8.2. 选项

图 14.131. “Perspective” tool options

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 Windows → Dockable Windows → Tool Options which opens the option window of the selected tool.

Transform; Interpolation; Direction; Clipping; Preview; Guides

  | 注意
  These options are described in Transform tools common options.

#### 4.8.3. The information window for perspective transformation

图 14.132. The information window of the “Perspective” tool

矩阵

  The information window shows a mathematical representation of the perspective transformation. You can find more information about transformation matrices on Wikipedia.

4.7. 切变 |  | 4.9. 翻转

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