constraint characteristic
1.We getthe fitting curves by choosing adjustable functional values and derivative values at the interpolation points of the Hermite in-terpolation curves based onthe characteristic of a statistic histogramat first andthen determining a adjustable value based onthe area constraint.
2.Firstly,in accordance with the oriented-object method and the performance of AutoCAD platform, the author analyses the demands of host platform characteristic for geometry constraints during the process of parametric design, and then constructs the calculating model for the dynamic management of geometry constraint system. This model can be implemented on other systems.
