---
title: "Object Properties"
url: "https://help.maxon.net/c4d/en-us/Content/html/OBASESURFACE-ID_OBJECTPROPERTIES.html"
section_path: "Configuration > Preferences > Import/Export > DWG Import > Object Settings for Curves and Surfaces > Base Surface > Object Properties"
element_id: "OBASESURFACE"
group_id: "ID_OBJECTPROPERTIES"
description: "Use these settings to change the polygonal subdivision of the surfaces in the U and V directions."
---

## Object Properties

### Type

Parameter ID: `BASESURFACE_TYPE`

This is where the (non-editable) surface type is displayed.

### Sub U

Parameter ID: `BASESURFACE_USUB` · Range: [1..5000]

### Sub V

Parameter ID: `BASESURFACE_VSUB` · Range: [1..5000]

Use these settings to change the polygonal subdivision of the surfaces in the U and V directions.

### Calculate Normals

Parameter ID: `BASESURFACE_NORMALS`

### Swap Normals

Parameter ID: `BASESURFACE_SWAPNORMALS`

The surface properties **Calculate Normals** and **Swap Normals** should be familiar from the import settings. **Calculate Normals** calculates additional normal tags for Cinema 4D which results in a more accurate depiction of shadows and reflections. **Swap Normals** reverses the direction of Normals