Patent ID: 8736599
Filing Date: 2014-05-27
Classification: G06T

Abstract:
1. A method of rendering a clipmap with a computer system, using a viewpoint with a predetermined position and line of sight with respect to an entity represented at least partially in said clipmap, wherein: the clipmap comprises a series of graphic data arrays in the form of clip regions representing at least part of a same entity with levels of detail increasing from a lowest clipmap level of detail to a highest clipmap level of detail, each clip region comprising a discrete number of tiles, not larger than a maximum clip region size, arranged in a tile grid, and centred around a grid intersection closest to said viewpoint or line of sight, and the tile grid of the clip region at each level of detail except for the lowest level of detail is a subdivision of the tile grid at a next lower level of detail, so that, at each level of detail except for the lowest level of detail, a tile block comprising a discrete plurality of tiles covers a same part of the represented entity as a whole single tile at the next lower level of detail; and the method comprising the steps of: