The ExtrusionMode can be one of:
| Constant | Description | 
|---|---|
| Enums. | (0)No extrusion. | 
| Enums. | (1)A z-value is calculated by adding the extrusion height to the minimum z-value of the feature, and the feature is extruded to a flat top at that value. | 
| Enums. | (2)A z-value is calculated by adding the extrusion height to the maximum z-value of the feature, and the feature is extruded to a flat top at that value. | 
| Enums. | (3)The feature is extruded to the specified z-value as a flat top, regardless of the z-values of the feature. | 
| Enums. | (4)A z-value is calculated for each vertex of the feature's base, and the feature is extruded to the various z-values. This is the only extrusion mode that does not have a flat top. |