Applying elevation and thickness
By default, the program creates new two-dimensional entities with a zero elevation and thickness. The easiest way to create a three-dimensional entity is to change the elevation or thickness property of an existing two-dimensional entity.
The elevation of an entity is its z-coordinate position in relation to the xy plane in which the entity is drawn. An elevation of 0 indicates that the entity is drawn on the xy plane of the current UCS. Positive elevations are above this plane; negative elevations are below it.
The thickness of an entity is the distance it is extruded above or below its elevation. A positive thickness extrudes the entity upward in the positive z direction of the entity; a negative thickness extrudes it downward in the negative z direction. The thickness is applied uniformly to the entire entity. You can extrude any two-dimensional entity into a three-dimensional entity by changing the thickness of the entity to a nonzero value. For example, a circle becomes a cylinder, a line becomes a three-dimensional plane, and a rectangle becomes a box.
Two-dimensional entities with thickness added.
You can create three-dimensional entities using any of the following methods:
- Draw two-dimensional entities in three-dimensional space.
- Convert two-dimensional planar entities into three-dimensional entities by applying elevation and thickness.
- Convert two-dimensional planar entities into three-dimensional entities by revolving or extruding.
- Create three-dimensional entities such as boxes, cylinders, cones, domes, spheres, and wedges.
You can change the default elevation and thickness values to create new entities with an elevation and thickness already applied.
Tell me about...
Creating three-dimensional entities
Editing in three dimensions
Setting the current elevation
Setting the current elevation and thickness using a dialog box
Setting the current thickness
How do I...
Change the thickness and elevation of an existing entity
Create a three-dimensional face
Set the current elevation
Set the current elevation and thickness using a dialog box
Set the current thickness