底图约束

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Description

描述

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

  1. Choose a Draft or Arch command to create your geometry.
  2. Pick a first point. A previous point is required.
  3. Press X, Y or Z to specify the direction.
  4. The cursor is now constrained.
  5. Pick the next point.
  6. 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.
  7. 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 mod key, Shift, can be changed: Edit → Preferences... → Draft → Grid and snapping → Snapping → Constrain mod.
  • The X, Y and Z shortcuts can be changed: Edit → Preferences... → Draft → User interface settings → In-Command Shortcuts.