Cube mapping Reflection mapping

a diagram depicting apparent reflection being provided cube-mapped reflection. map projected onto surface point of view of observer. highlights in raytracing provided tracing ray , determining angle made normal, can fudged , if manually painted texture field (or if appear there depending on how texture map obtained), projected onto mapped object along rest of texture detail.



example of three-dimensional model using cube-mapped reflection

cube mapping , other polyhedron mappings address severe distortion of sphere maps. if cube maps made , filtered correctly, have no visible seams, , can used independent of viewpoint of often-virtual camera acquiring map. cube , other polyhedron maps have since superseded sphere maps in computer graphics applications, exception of acquiring image-based lighting. image-based lighting can done parallax-corrected cube maps.

generally, cube mapping uses same skybox used in outdoor renderings. cube-mapped reflection done determining vector object being viewed at. camera ray reflected surface normal of camera vector intersects object. results in reflected ray passed cube map texel provides radiance value used in lighting calculation. creates effect object reflective.