Mouse navigation/zh-cn

FreeCAD的 '鼠标模式 由用于在3D空间视觉导航并与显示对象进行交互的命令组成. FreeCAD支持多种鼠标型号导航. 默认的导航风格被称为“CAD导航”，并且非常简单实用，但FreeCAD还提供了替代的导航样式，您可以根据自己的喜好进行选择.

导航
对象处理对于所有工作台都是常见的. 根据选择的导航方式，可以使用以下鼠标手势来控制对象位置和视图.

有两种方法来更改导航样式：


 * 在首选项编辑器，显示部分，“3D视图”选项卡;
 * 通过在3D视图区域的空白处右键单击，然后在上下文菜单中选择“导航样式”.

CAD导航（默认）
这是默认的导航样式，允许用户简单地控制视图，除了进行多选，不需要使用键盘键.

Inventor Navigation
In Inventor Navigation, modeled after Open Inventor (not to be confused with Autodesk Inventor), there is no mouse-only selection. In order to select objects, you must hold down the key.

Blender Navigation
In Blender Navigation, modeled after Blender, there is no mouse-only panning. In order to pan the view, you must hold down the key.

Touchpad Navigation
In Touchpad Navigation, neither panning, nor zooming, nor rotating the view, are mouse-only (or touchpad-only) operations.

Gesture Navigation (v0.16)
This navigation style was tailored for usability with touchscreen and pen, but is very usable with mouse too.

Maya-Gesture Navigation
In Maya-Gesture Navigation, all view movements are activated pressing and a mouse button, so that it will be needed to have a 3 button mouse in order to correctly use this navigation mode. Alternately it's possible to use gestures as this mode was been developed over the normal Gesture Navigation mode.

Simple selection
Objects can be selected by a click with the left mouse button either by clicking on the object in the 3D-view or by selecting it in the tree view.

Preselection
There is also a Preselection mechanism that highlights objects and displays information before selection by just hovering the mouse over the objects. If you don't like this behaviour or you have a slow machine, you can switch preselection off in the preferences.

Manipulating Objects
FreeCAD offers manipulators that are handles that can be used to modify an object's appearance, shape, or other parameters.

The clipping plane is an example of an object with manipulators. A clipping plane can be activated with the View→Clipping Plane menu

Hardware support
FreeCAD also supports some 3D input devices.

Mac OS X Issues
Recently we got reports on the forum from Mac users that those mouse button and key combination do not work as expected. Unfortunately, none of the developers owns a Mac, neither do the other regular contributors. We need your help to determine which mouse buttons and key combination work so we can update this wiki.