Fluent User Interface > Creo Elements/Direct Drafting User's Guide: Fluent User Interface > Parametric Design with Drafting > Examples > Example 2: Symmetry Lines > Assign Reference Elements
Assign Reference Elements
To ensure that variations don't move around the page, anchor the part with Refelem constraints on the four construction lines. These lines make ideal reference elements because they run through the major axes of the part as well as the centerpoint of the hole we want to modify, and because they would not move in any of the variations we want to create.
To assign the reference elements:
1. Click Parametric and then, in the Create group, click Constraints.
The Generate Constraints dialog box opens.
2. In the Type box, select Refelem.
3. Click Apply.
4. Click each of the four construction lines that run through the part.
5. Click OK.
The default size for constraint icons is much too small for this part. And it is also possible that several of the icons are overlapping. If you can't clearly see the constraint icons now on the part, change their size and location:
1. Click File > Settings > Parametric > Parametric Icon.
The Icon Setting dialog box opens.
2. In the Size box, type 30.
3. Click OK.
4. Click Parametric and then, in the Create group, click Constraints.
The Generate Constraints dialog box opens.
5. In the Action area, click Clear and in the Type box, select All Types to clear the small icons.
6. In the Action area, click Show and in the Type box, select All Types to display the icons in the new size.
The icons are now visible, but may still be overlapping. If all four icons are not visible, move them to uncover the obscured icons:
1. Click Parametric and then, in the Modify group, click Move Icon.
2. Click the constraint icon you want to move.
The icon is replaced with a "rubberband" line.
3. Drag the rubberband line to where you want the icon and click at that location.
4. Move the rest of the icons till you can see all the four icons.
Was this helpful?