Working with Reference Geometry in 3D-CAD

Reference geometry helps you construct models in 3D-CAD. You can also use reference geometry in downstream applications, such as FEA.

Points, Planes, Axes, and Coordinate Systems are all types of reference geometry. You can define reference geometry relative to other geometry, such as imported models, 3D-CAD models, or other reference entities. All reference geometries are created as features in the 3D-CAD feature tree.

To create reference geometry:

Right-click the Features node, select Reference Geometry > [Reference Geometry Type], and select the desired method.
In the panel that appears, set the appropriate options for the reference geometry. See Reference Geometry Options.
A preview of the reference geometry is displayed in the 3D-CAD View scene.
Click OK to create the reference geometry.
A feature that corresponds to the reference geometry is added to the 3D-CAD feature tree.
You can control the visibility of individual reference geometries using one of the following techniques:
- In the feature tree, right-click the feature that corresponds to the desired reference geometry and select Hide/Show.
- In the 3D-CAD View scene, right-click the reference geometry and select Hide/Show.

Reference Points

Reference points can refer to a fixed or parametric position in space. Every 3D-CAD model contains a global origin, which is created by default and is located at position [0, 0, 0].

In addition to the global origin, you can create reference points using the following methods:

By Location
By Offset
From Entity Center
By Projection
By Import

Reference Axes

Reference axes are useful for controlling extrude and pattern directions. You can create reference axes using the following methods:

By Definition
By Two Points
From Linear Entity
From Revolved Entity
From Point and Plane
By Intersecting Planes

Reference Planes

Reference planes are useful for positioning sketches with reference to an existing point. You can create reference planes using the following methods:

By Definition
By Transformation
By Three Points
From Point and Axis
From Curve

Reference Coordinate Systems

Coordinate systems are useful for defining centers of rotation. You can create reference coordinate systems using the following methods:

By Definition
By Three Points
By Import
From Point and Axis
From Point and Plane

Sketches

Sketches are an integral part of feature creation in 3D-CAD. You can select sketches in combination with other entity types. For more information on creating sketches, see Sketches.