|
SPAresfit is named for
resolution fit. This is used as a guide to the fitting algorithms for the fit tolerance of an approximate curve or surface. The default value is 10-3.
|
|
|
Polynomial approximations are computed for some curves and surfaces in
ACIS. The approximations are stored in the model together with their corresponding curve or surface definitions. The approximations are used:
|
|
|
Alone when approximate geometry is sufficient (e.g., for drawing).
|
|
|
Together with the curve or surface definitions when more precise geometry is required; using the two together can make algorithms faster than using the curve or surface definitions alone.
|
|
|
Some fitting algorithms are adaptive, and therefore may produce tighter fits than
SPAresfit in certain circumstances; for example, in regions of high curvature.
|