底图约束

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This page is a translated version of the page Draft Constrain and the translation is 6% complete.

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Snap

Pattern

Draft

Description

描述

在底图工作台工具中，您可以通过指针单击3D视图来拾取图形中的点、距离、半径与角度。

Constraining is available with most Draft and Arch commands.

While the cursor is constrained the task panel locks the values that are not being modified

水平约束与垂直约束

按住Shift键，即可在上一个输入点的水平（X）方向或垂直（Y）方向上绘制当前输入点。至于约束的是水平方向还是垂直方向，则取决于按下 Shift时鼠标指针的位置；如果按键时指针位于上一个点的东西两侧，则约束的是水平方向；如果按键时指针位于上一个点的南北两侧，则约束的是垂直方向。如果要改变约束方向，只需松开Shift键,并将指针移到另一个新位置，再重新按下Shift键即可。

Usage X, Y and Z constraints

Choose a Draft or Arch command to create your geometry.
Pick a first point. A previous point is required.
Press X, Y or Z to specify the direction.
The cursor is now constrained.
Pick the next point.
If the command is still active optionally do one of the following:
- Press the same key to disable the constraint.
- Press one of the two other keys to constrain in a different direction.
X, Y and Z constraints are automatically disabled when the command is finished.

Notes

Constraining can be combined with snapping.
The Draft Offset command and Draft Trimex command use a different type of constraining, namely to restrict the operation to a certain segment.

Preferences

See also: Preferences Editor and Draft Preferences.

The default Constrain modifier key, Shift, can be changed: Edit → Preferences... → Draft → Grid and snapping → Constrain modifier.
The X, Y and Z shortcuts can be changed: Edit → Preferences... → Draft → Interface → In-command shortcuts.