Fineness - DPI Controlled Arc Smoothness

The Fineness multiplier is used in conjunction with the specified DPI to control the arc resolution. The larger the value of the fineness multiplier the coarser the arc is.
Here is how we calculate the chord error:

                1.0
chord error =  -------*0.02*Fineness
                DPI

The fineness parameter is used during the conversion of the ODB++ file to intermediate gerber data. Here are a few examples of Gerber intermediate output using various fineness values.

Fineness multiplier: 1000 Calculated Chord Error: 0.00195313

Fineness multiplier: 100 Calculated Chord Error: 0.000195313

Fineness multiplier: 10 Calculated Chord Error: 1.95313e-005