O-X-Y Type Attachment Modes: Difference between revisions

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Here we provide more detailed information on the use of '''Align O-X-Y''' type modes in the [[Part_EditAttachment]] attachment editor. These modes are
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*Align O-X-Y
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*Align O-X-Z
Here we provide more detailed information on the use of '''Align O-X-Y''' type modes in the [[Part_EditAttachment|Part Attachment editor]].
*Align O-Y-X

*Align O-Y-Z
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*Align O-Z-X
These modes are:
*Align O-Z-Y
* Align O-Z-X
* Align O-Z-Y
* Align O-X-Y
* Align O-X-Z
* Align O-Y-Z
* Align O-Y-X

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These modes are used to attach to a specified vertex, with an orientation determined by reference to other vertices or edges.
These modes are used to attach to a specified vertex, with an orientation determined by reference to other vertices or edges.


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{{KEY|Reference1}} must be a Vertex. The origin is mapped to this selected point. (Note: If an edge ''is'' selected for {{KEY|Reference1}}, O-X-Y type modes are not offered.)
{{Button|Reference1}} must be a vertex. The origin is mapped to this selected point.

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Note: If an edge is selected for {{Button|Reference1}}, O-X-Y type modes are not offered.

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{{Button|Reference2}} and {{Button|Reference3}} must be either vertices or edges. They provide direction information. For a vertex, the direction is from the origin to the selected vertex. For an edge, it is the direction of the edge. {{Button|Reference3}} is optional.

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Take mode O-X-Z as an example:
*The '''O''' represents the origin, corresponding to {{Button|Reference1}}.
*The '''X''' indicates that the X-axis of the attached object is to be aligned with the direction of {{Button|Reference2}}.
*The '''Z''' indicates that the Z-axis of the attached object is to be aligned with the component of the direction of {{Button|Reference3}} at right angles to the X-axis.
*The '''Y'''-axis completes the orthogonal right-hand axis triad.


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{{KEY|Reference2}} and {{KEY|Reference3}} must be either Vertices or Edges. They provide direction information. For a Vertex, the direction is from the origin to the selected vertex. For an Edge it is the direction of the edge. {{KEY|Reference3}} is optional.
For other modes, the axes are mapped in a corresponding fashion.


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Take mode O-X-Z as an example.
If {{Button|Reference3}} is not provided, FreeCAD makes default choices for it.
*The 'O' represents the origin, corresponding to the {{KEY|Reference1}}.
*The 'X' indicates that the X-axis of the attached object is to be aligned with the direction of {{KEY|Reference2}}
*The 'Z' indicates that the Z-axis of the attached object is to be aligned with the component of the direction of {{KEY|Reference3}} at right angles to the X-axis.
*The 'Y'-axis completes the orthogonal right-hand axis triad.


For other modes, the axes are mapped in the corresponding fashion.


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If {{KEY|Reference3}} is not provided, FreeCAD makes default choices for it. For modes O-X-Y, O-X-Z, O-Y-X and O-Y-Z {{KEY|Reference3}} is taken to align with the global Z-axis. For modes O-Z-X and O-Z-Y {{KEY|Reference3}} is taken to be the global Y-axis.
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Latest revision as of 14:04, 5 October 2023

Other languages:

Here we provide more detailed information on the use of Align O-X-Y type modes in the Part Attachment editor.

These modes are:

  • Align O-Z-X
  • Align O-Z-Y
  • Align O-X-Y
  • Align O-X-Z
  • Align O-Y-Z
  • Align O-Y-X

These modes are used to attach to a specified vertex, with an orientation determined by reference to other vertices or edges.

Reference1 must be a vertex. The origin is mapped to this selected point.

Note: If an edge is selected for Reference1, O-X-Y type modes are not offered.

Reference2 and Reference3 must be either vertices or edges. They provide direction information. For a vertex, the direction is from the origin to the selected vertex. For an edge, it is the direction of the edge. Reference3 is optional.

Take mode O-X-Z as an example:

  • The O represents the origin, corresponding to Reference1.
  • The X indicates that the X-axis of the attached object is to be aligned with the direction of Reference2.
  • The Z indicates that the Z-axis of the attached object is to be aligned with the component of the direction of Reference3 at right angles to the X-axis.
  • The Y-axis completes the orthogonal right-hand axis triad.

For other modes, the axes are mapped in a corresponding fashion.

If Reference3 is not provided, FreeCAD makes default choices for it.