标签：des style http io ar os 使用 for sp
freeCAD鼠标的控制模式由多个命令构成，用于三维空间的视觉导航和控制显示对象。freecad支持多个鼠标导航方式。默认的导航方式是被称为“CAD导航”，非常简单实用，但freecad还提供了几个替代的导航方式，你可以根据你的喜好选择。更换操作方式可以在“编辑”>“选项”>“显示”选项卡>“3D视图”选项卡内的3D导航更改！
所有工作台的对象处理一样的。按照导航方式不同，下面的鼠标手势可以用来控制对象的位置和角度。
这是默认的导航方式，允许用户简单的视图控制，并且不需要使用键盘上的方向键，除了多选。
| 选择 | 平移 | 缩放 | 旋转 | 可替代前一个旋转 |
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| 在要选取的对象上按下鼠标左键。按住Ctrl允许多个对象的选取。 | 单击鼠标中键可平行移动物体 | 使用鼠标滚轮来放大或缩小。 | Click first with the middle mouse button, hold it down, and then click the left mouse button and drag the mouse in the desired direction. The cursor location at the middle mouse button click determines the center of rotation. Rotation works like spinning a ball which rotates around its center. If the buttons are released before you stop the mouse motion, the object continues spinning, if this is enabled. A double click with the middle mouse button sets a new center of rotation. | Click first with the middle mouse button, hold it down, and then click the right mouse button and drag the mouse in the desired direction. This method works just like the previously described Rotate View that uses Middle Mouse Button + Left Mouse Button, except that the middle mouse button may be released after the right mouse button is pressed. Users who use the mouse with their right hand may find this Rotate View method easier than the previous method. |
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| Press and hold Ctrl key and click and release right mouse button to pan (rev 0.14) | Once in Pan mode, press and release left mouse button to Zoom, to exit back to pan mode press and release right mouse button (rev 0.14) | Once in Pan mode, click and momentary hold left mouse button to rotate, to exit back to pan mode press and release right mouse button (rev 0.14) |
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 CTRL key.
| Select | Pan | Zoom | Rotate View |
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| Hold ctrl and press the left mouse button over an object you want to select. | Click the left mouse button and move the object around. | Use the mouse wheel to zoom in and out, or click and hold the middle mouse button and click the left mouse button. | Click and drag with the left mouse button to rotate |
In Blender Navigation, modeled after Blender, there is no mouse-only panning. In order to pan the view, you must hold down the SHIFT key.
| Select | Pan | Zoom | Rotate View |
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| Press the left mouse button over an object you want to select. | Hold shift and click the middle mouse button and move the object around. | Use the mouse wheel to zoom in and out. | Click and drag with the middle mouse button. |
In Touchpad Navigation, neither panning, nor zooming, nor rotating the view, are mouse-only (or touchpad-only) operations.
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PgUp / PgDn | alt+
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| Press the left mouse button over an object you want to select. | Hold shift and move the object around. | Use PgUp and PgDn to zoom in and out. | Hold alt and move the pointer. |
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| Hold down both the shift and the ctrl keys, press the left mouse button, and move the pointer. | Hold down both the shift and the ctrl keys and move the pointer. |
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.
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.
FreeCAD offers manipulators that are handles that can be used to modify an object‘s appearance, shape, or other parameters.
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The clipping plane is a good example of an object with manipulators. A clipping plane can be activated with the View→Clipping Plane menu. After activation the clipping plane object appears and shows seven obvious manipulators as little boxes: One on each end of its three coordinate axes and one on the center of the plane normal axis. There are four more that are not as obvious: The plane itself and the thin part of the three axis objects.
FreeCAD also supports some 3D input devices.
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.
标签：des style http io ar os 使用 for sp
原文地址：http://www.cnblogs.com/freecad/p/4072526.html
