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3D Modelling is the process of creating a three dimensional computer model which represents a three dimensional object. 3D models are made from points in 3D space connnected by geometric data, such as lines and curves.
There are four popular methods for creating 3D models, they are:
- Polygonal Modelling - the majority of models used in gaming and film are polygon models. It is the method of creating 3D surfaces from numerous amounts of polygons, like a net. Polygon models are very flexible and can be rendered by a computer very quickly. They are unable however to create true smooth surfaces, as all surfaces created are faceted
- Primitive/Solid Modelling - this method uses geometric primitives such as cubes, cylinders, cones and spheres to construct more complex models. This is the simplest and quickest modelling technique
- NURBS Modelling - NURBS (Non-uniform rational B-spline) modelling unlike polygonal modelling can create smooth curved surfaces, but are more draining on a computers time when rendering
- Spline/Patch Modelling - similar to NURBS modelling, except surfaces are created from the curved lines which make up their edges
3D modelling is now faster and more accurate than previously as with the use of 3D Laser Scanned Point Clouds lines and surfaces can be snapped directly to actual surveyed points in 3D space.
From Point Cloud to 3D Model to Visualisation
To see 3D modelling examples please visit our Project Gallery
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