Altium Designer Documentation

Working with an Arc Object on a Multi-board Schematic Document in Altium Designer

Created: October 14, 2021 | Updated: October 14, 2021
All Contents

Parent page: Multi-board Schematic Objects

Two placed Arcs; the one on the left is in edit mode.Two placed Arcs; the one on the left is in edit mode.

Summary

An Arc is a graphic object that can be placed on a multi-board Design schematic document and set to the desired arc angle, radius and line style. An Arc can be placed using a center or three-point method.

Availability

An arc can be placed in the multi-board schematic editor in the following ways:

  • Choose the Place » Arc (By Center) or Place » Arc (3 Points) command from the main menu.
  • Click the  or  button in the graphic objects drop-down on the Active Bar located at the top of the design space. Click and hold an Active Bar button to access other related commands. Once a command has been used, it will become the topmost item on that section of the Active Bar.
  • Right-click in the drawing design space then select Place » Arc (By Center) or Place » Arc (3 Points) from the context menu.

Placement

After launching either command, the cursor changes to a cross-hair indicating Arc placement mode.

Arc by Center placement steps:

  1. Click to set the center point of the arc.
  2. Move the cursor to adjust the radius and starting point of the arc then click to confirm.
  3. Move the cursor to set the end point (and total angle) of the arc then click to confirm.
  4. Continue placing further arcs or right-click or press Esc to exit arc placement mode.

Arc in 3 Points placement steps:

  1. Click to set the starting point of the arc (point #1).
  2. Move the cursor to set the end point of the arc then click to confirm (point #2).
  3. Move the cursor to set the radius of the arc then click to confirm (point #3).
  4. Continue placing further arcs or right-click or press Esc to exit arc placement mode.
The default settings for the Arc object are available in the Multi-board Schematic - Defaults page of the Preferences dialog.

Graphical Editing

This method of editing allows a placed Arc object to be selected in the design space and then graphically edit its location, radius and start/end points.

Select an Arc by clicking on its outline. Once selected, editing handles/nodes are available at its center, perimeter and start/end points:

The ways in which Arc nodes may be manipulated. The ways in which Arc nodes may be manipulated.

  • Click and drag the arc's center node to reposition it on the drawing document.
  • Click and drag a start or end point node to alter the arc angle.
  • Click and drag the perimeter node to change the radius of the arc.

Advanced manipulation of an Arc is available by pressing the Ctrl key while moving an editing node:

  • Click and drag a start or end point node to alter its location while retaining the arc angle.
  • Click and drag the perimeter node to alter the size of the arc while retaining its start and end points.

Non-Graphical Editing

Properties page: Arc Properties

The non-graphical method of editing an Arc is available in the Properties panel, which provides editable property fields for the item that is currently selected in the design space.

The Properties panel when an Arc object is selected.The Properties panel when an Arc object is selected.

To open the Properties panel and access the properties of a placed Arc:

  • After selecting the Arc object, select the Properties panel from the Panels button at the bottom right of the design space or select View » Panels » Properties from the main menus.
  • Double-click on the Arc's perimeter.
  • Right-click on the Arc perimeter then select Item Properties from the context menu.

If the Properties panel is already active, click on the Arc's perimeter to access its properties in the panel.

The Arc properties can be accessed prior to entering placement mode, from the Multi-board Schematic – Defaults page of the Preferences dialog. This allows the default properties for the Arc object to be changed, which will be applied when placing subsequent Arcs.

Editing Multiple Objects

The Properties panel supports multiple object editing where the property settings that are identical in all currently selected objects may be modified. When multiples of the same object type are selected, a Properties panel field entry can be edited for all selected objects. If values of a property are different for objects in the selection, the appropriate field will be shown as an asterisk (*); a new property value will be applied to all selected objects.

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