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Hierarchical triangular mesh

Data structure for storing geometric information From Wikipedia, the free encyclopedia

Hierarchical triangular mesh
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Hierarchical Triangular Mesh (HTM) is a kind of quad tree based on subdivision of a distorted octahedron, used for mesh generation in 3-D computer graphics and geometric data structures.[1]

Thumb
Diagram of Hierarchical Triangular Mesh (HTM). The spherical polygons are the projection of the edges of the octahedron onto the circumscribing sphere.

Functions

  • It provides a systematic indexing method for objects localized on a sphere.[2]
  • It is an efficient method for searching different resolutions like arc seconds or hemispheres.[1]
  • It can be used as a method to subdivide the spherical surface into triangles of nearly equal shape and size.[2]

See also

References

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