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What guidelines apply to the 3D models' geometries?

  • Individual models should have fewer than 5000 polygons each.
  • They should never be complex; photo-textures should be used in lieu of geometries where possible.
  • Polygons should never have broken vertices, T intersections, spiderweb faces, hidden faces, z-fighting, self-intersections or internal/unseen geometry.
  • Individual buildings should be represented by a single group of geometries, not multiple stacked primitives.
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