The 3D models get created based on the available data. The modelling process involves a variety of tools, comparable to manufacturing methods in reality. Each face of a 3D model is defined by three points and is called polygon. A rectangular area thus consists of two polygons. The more accurate a shape should be represented, the more polygons / subdivisions are required. Shapes based on rectangles, circles or splines are largely automated. For freeform surfaces, each point of a model can be defined individually. This is usually done with a few subdivisions and a small number of polygons. Afterwards the model can be extrapolated to the desired quality. Surfaces automatically get subdivided further during this step. In addition, deformers which allow the deformation of models in certain areas (bend, compress, expand, etc.) are available.

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