There are two different parametric representational models – constructive solid geometry (CSG) and boundary representation (BR).Ĭonstructive solid geometry defines parametric models by combining basic (primitive) and generated solid shapes. Parametric models can employ the same algorithm throughout, so that whenever a particular element is adjusted, the changes happen throughout the model. In this case, if the ceiling to floor height is changed, the walls will adjust on their own. Let’s suppose a rule is created for ensuring that the walls in a room must reach the ceiling underside, and start at the floor level. Parametric rules create relationships between the different design elements.
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The digital model is generated automatically by internal logic arguments instead of manual manipulation.
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These equations are a series of pre-programmed algorithms known as “parameters”. The equations must have real project information for the parametric models to have any legitimacy.
But with parametric modeling, only one parameter needs to be altered, and the other two parameters get adjusted automatically.Ī set of mathematical equations are used for generating parametric models. For modifying a 3D shape, a designer has to edit the length, breadth, and the height. The subsequent attributes that are automatically interlinked change their features – allowing designers to define entire classes of shapes, and not just specific instances.
Parametric modeling uses feature-based, solid, and surface modeling design tools for manipulating system attributes.
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