简介¶
有很多选择网格元素的方式,而且可以使用什么样的选择工具还取决于您当前在什么 网格选择模式 下。首先我们简要了解一遍这些选择模式,然后将对基础的选择工具稍作了解。
选择模式¶
在 编辑模式下 有三种不同的选择模式。您可通过选择标题栏中三个按钮中的某个来进入不同的选择模式。
- 顶点
In this mode vertices are shown as points. Selected vertices are displayed in orange, unselected vertices in black, and the active or last selected vertex in white.
- 边
In this mode the vertices are not shown. Instead the selected edges are displayed in orange, unselected edges black, and the active or last selected edge in white.
- 面
In this mode the faces are displayed with a selection point in the middle which is used for selecting a face. Selected faces and their selection point are displayed in orange, unselected faces are displayed in black, and the active or last selected face is highlighted in white.
当使用这些按钮时,可充分利用编辑键,详见: 切换选择模式。
几乎所有的工具都可以在全部的三种选择模式下使用。所以您在所有的模式下都可以 旋转 , 缩放 , 挤出 等。当然,对单个 顶点 进行旋转和缩放是没有意义的(除非 将原点设在了另一个位置),所以某些工具在某些选择模式下可能更加适用或不太适用。
不同选择模式示例详见参考图 选择模式。 。
多选择模式¶
By holding Shift-LMB when selecting a selection mode, you can enable multiple Selection Modes at once. This allows you to quickly select vertices, edges, or faces, without first having to switch mode.
切换选择模式¶
当以“升级”的方式(换句话说就是由简单走向复杂)切换选择模式,从 顶点 切换到 边 以及从 边 切换到 面,如果选中元素能构成新的选择模式下的完整元素,其将保持选中状态。
例如,如果一个面上所有四条边都被选中,由 边 选择模式切换到 面 选择模式下将会保持其构成的面处于被选中状态。所有未能够构成新选择模式下完整元素的内容将被弃选。
因此,以“降级”的方式(换句话说就是由复杂走向简单)切换选择模式,所有定义“高级”元素(比如面)的元素将仍然处于选中状态(比如四边形的四个顶点或四条边)。
扩展/缩减选择¶
By holding Ctrl when selecting a higher selection mode, all elements touching the current selection will be added, even if the selection does not form a complete higher element. Or contracting the selection when switching to a lower mode.
透视¶
The x-ray setting is not just for shading, it impacts selection too. When enabled, selection isn't occluded by the objects geometry (as if the object was solid).
已知问题¶
密集网格¶
Selecting dense meshes with X-Ray disabled, has a limitation where dense meshes may not have all the elements selected. When selecting regions with Box, Circle and Lasso select, vertices may overlap each other causing some vertices not to be selected. This is a limitation with the current selection method, you may workaround this by zooming in or enabling X-Ray.
面选择模式下的N边形面¶
As already noted, in X-Ray and Wireframe mode faces are marked with a dot in the middle. With n-gons that can lead in certain cases to a confusing display. The example shows the center dot of the U-shaped n-gon being inside of the oblong face inside the "U". It is not easy to identify which dot belongs to which face (the orange dot in the image is the object origin).