Radial and diametric dimension entities have the ability to mark their centers
using two types of indicators: center mark or centerline.
Dimcen
The Dimcen value indicates the type and the size of the center indicator.
An absolute value defines the size, and depending on the sign of the value,
the center can be indicated by a center mark or centerline. Negative non-zero
double values determine the size of a centerline; positive values determine
the size of a center mark. A zero value is used for a zero mark.
To get the size of a centerline or center mark, use the dimcen() method, which
returns the size as a double value.
For example:
odPrintConsoleString(L"\nDimcen is %f", pDimension->dimcen());
To set a new Dimcen value, use the setDimcen() method, which requires one double
parameter to specify the size of the centerline or center mark.