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 |