Parametrics, Parametric History, Dimensionally-constrained Parametrics or Equation-driven Parametrics

Pertaining to parameters that define the dimensions of any object. Paramerics in this context can drive the shape of a design by mathematical equations and relationships. When one dimension changes, others within the model will change or not, according to the parameters established to govern those relationships.

A very simple example of a parametric equation: the width of an object can be constrained with parameters to always be 30% of the depth. When the depth is changed, the width changes accordingly.

A very simple example of a relationship: a hole designated as centered on a form will remain in the center no matter how that form changes size and or shape.

Found in Cobalt and Graphite™ only, parametrics are good for part families with varying features. Unlike the parametric tools found in SolidWorks or Pro/Engineer, Cobalt’s parametrics can be used on-demand, so that they don’t constrain creativity.