Autodesk Revit Tutorials, Revit Families, BIM Revit

   
     
     
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Editing Elements Interactively

 

Rotating and Mirroring Elements

It’s common to need to rotate an element. Just as with Move, Revit provides a few methods for rotating elements. The time-saving spacebar is a quick way to rotate elements in 90-degree incre- ments. For more precision, the Rotate tool is provided, which you can use to rotate elements to any angle you require.
To activate this tool, first choose the element(s) you want to copy, and then select the tool. Using the Options bar, you can choose to make multiple copies of the element in one interaction by select- ing the Multiple option:
Using the Spacebar
Revit uses the spacebar to rotate elements both at the time of placement and once an element has been placed. This is a great time-saving command to become familiar with, because you can forgo using more traditional tools such as Rotate and Mirror by taking advantage of the spacebar. Here are a few examples:
Doors and windows If you have a door with its swing in wrong direction, select it and press the spacebar. You can cycle through all four possible orientations of the door with a few clicks. The same holds true for windows; however, many window families are built to only let you flip the window from inside to outside, because many windows are symmetrical in elevation. If you have asymmetrical windows, be sure to add flip controls to the family—these allow the spacebar to work on hosted elements. Figure 3.8 shows the window opened in the Family Editor and where to access the flip controls for placement from the Design bar and Options bar.
Figure 3.8
Flip arrows are used to flip elements. These can be added to fami- lies from the Family Editor.
 
Walls If you select a wall, pressing the spacebar flips the element as if it were being mirrored about its length. Walls flip based on the Wall Location Line, which often isn’t the wall centerline. If you aren’t sure which direction your wall is facing, select it and look for the flip-control arrows. These are always drawn on the exterior side of walls (Figure 3.9).
Freestanding elements If you select a freestanding element like the loveseat shown in Figure 3.10, the spacebar rotates the element about the center reference planes defined in the family. Depending on how the family was built, the rotation origin may not make the most sense, but you can quickly orient your furniture and casework. If you decide to edit a family to change the location of the geometry relative to the center reference planes, be careful: When loaded back into a project, all your elements will jump to a new XY location based on the changes you made!
Figure 3.9
The flip arrow is another way to reorient an element. For walls, the flip arrow is always on the exterior side
 
Figure 3.10
Center reference planes defined in the family determine the rotation origin.
 
Using the Rotate Tool
To rotate an element, select it and click the Rotate tool. This is a two-pick operation similar to the Move and Copy tools; or you can enter numeric values. Revit locates the geometric center of the ele- ment(s) and uses that as the default center of rotation. This is fine if you don’t need to be precise and just want to rotate something by a known angle. However, in most cases, you first need to designate a meaningful center of rotation.
To do so, select and drag the rotation cursor to a new location before clicking to set start and end picks. Once the origin is established, begin rotating the element using the temporary dimensions as a reference or by typing in the angle of rotation explicitly.
You’ll notice that while moving the origin, you lose the ability to pan and zoom the view. To over- come this, drag the origin into the Project Browser and release the mouse button; then, move the mouse back into the view. The cursor changes to a rotation icon, and you can freely pan and zoom all you want. The next click you make places the origin, and you can then designate the rotation.
Using the Mirror Tool
The Mirror tool allows you to mirror elements across an axis in order to create a mirror image of an element, like the sinks in Figure 3.11. You can either pick an existing reference in the model (the arrow icon) or draw the axis interactively (the pencil icon). In the example shown, a mirror axis was drawn through the center of the top wall.
Figure 3.11
The sinks, toilet fix- tures, and door are mirrored about the middle of the wall at the top of the view
 
Use the pick method when you have an existing element with a meaningful center axis. If noth- ing in the model exists as a mirror axis, use the draw mode and draw your own axis.