About Triangulated Irregular Networks

Surfaces and 3D regions are represented by a triangulated irregular network (TIN) -  that is, a network of triangles joined at their vertices. The size and number of these triangles will determine some key performance characteristics:

  • The resolution of the scene.
    Larger triangles make for a coarse scene, smaller triangles for finer scene.

  • The memory required to store the scene.
    The TIN is stored in the EV file. The more triangles, the more space is required, the larger the EV file.

  • The processing power/time required to render the scene.
    The TIN is rendered on the screen in 3 dimensional perspective. The more triangles, the more power or time will be required to affect this rendering.

The resolution of the resampled surfaces is defined independently in two directions (north-south and east-west).

See also

Creating 3D Objects
Resample Surface dialog box