SURFACE

AutoCAD DXF Format

 
SURFACE
 
 
 

Surface entity definitions consist of group codes that are common to all surface types, followed by codes specific to the type.

Common Surface group codes

Group code

Description

100

Subclass marker (AcDbModelerGeometry)

70

Modeler format version number (currently = 1)

1

Proprietary data (multiple lines < 255 characters each)

3

Additional lines of proprietary data (if previous group 1 string is greater than 255 characters) (optional)

100

Subclass markar (AcDbSurface)

71

Number of U isolines

72

Number of V isolines