Create or edit a reference or construction plane

Use the Plane tool to create a reference plane which you can use as input to tools requiring a plane, or as the construction plane.

Create a reference or construction plane

1. Choose Construction > Plane .
2. Select the type of plane you want to create and click Go.
3. Click to place one, two, or three points, according to the instructions on the prompt line. You can also type the 3D coordinates for a point.
4. Adjust the plane by moving the point(s), or using the manipulator (if available), to move, rotate, and size the plane.
5. To make this plane a reference plane, and go on to create another plane, click Next Plane.

   To make this plane the construction plane, click Set Construction Plane.

   Note:

   There can only be one construction plane in a scene. If you create a construction plane and there is already a construction plane in the scene, the existing construction plane will become a reference plane.

How to use the plane manipulator

Click a handle to select it (the handle becomes white), then either:

• Drag the handle to move/rotate/scale the plane. (See Interactive manipulation.)
• Type exact values on the keyboard.
• Click the geometry or the grid, while using a snap mode, to snap the axes of the manipulator to a specific position or orientation.

Interactive manipulation

• Drag an arrow handle to move the plane along an axis.
  

• Drag a dotted arc to rotate the plane around the axis with the same color (the axis perpendicular to the arc).
  

• Drag a square handle to scale the plane along the axis that has the same color as the square.
  

• Drag the center handle to move the plane freely.
  

• Click one of the rectangular boxes to flip the plane to one of the two perpendicular orientations.
  

• Click a dotted axis line to reflect the plane across the X, Y, or Z axes.
  

• Use Edit > Undo to undo changes to the manipulator.

Edit a reference or construction plane

1. Pick the plane.
2. Choose Construction > Plane.

   The points and manipulator (if applicable to this type of plane) appear.

   Note:

   You can also select the Plane tool first, then select the plane you want to edit.

3. Adjust the plane by dragging the point(s), or using the manipulator.
   Tip:

   Open the Information window (Windows > Information > Information Window) to see detailed information as you manipulate the plane.

4. To make the plane a reference plane and go on to create another plane, click Next Plane.

   To make this plane the construction plane, click Set Construction Plane.

   Note:

   There can only be one construction plane in a scene. If you create a construction plane and there is already a construction plane in the scene, the existing construction plane will become a reference plane.

Choose a construction plane

• To toggle between a construction plane and the world space coordinate system, choose Construction > Toggle Construction Plane.
• To set a construction plane, pick a reference plane, then choose Construction > Set Construction Plane .

Hide or show reference/construction planes

• Select WindowDisplay > Toggles > Construction Objects.

Delete a reference/construction plane

1. Pick only the reference/construction plane.
2. Press the key, or choose Delete > Delete Active from the menus.

Snap to the intersection of a curve and a plane

You can easily snap to a curve that intersects a construction plane, and position the snap point either anywhere along the curve, or precisely at the point where the curve and plane intersect.

If True Intersections is checked in Curve Snap Options, and you drag the snap point close to the construction plane, a yellow cross appears on the plane indicating that the snap point is precisely at the intersection point.