투영 (projection)
투영 : http://en.wikipedia.org/wiki/Projection_(linear_algebra)
└ 원근 투영(Perspective projection) : http://en.wikipedia.org/wiki/3D_projection
└ 평행 투영(Parallel projection) : http://en.wikipedia.org/wiki/Parallel_projection
└ Oblique projection : http://en.wikipedia.org/wiki/Oblique_projection
└ Cavalier projection
└ Cabinet projection
└ 직교(정) 투영(Orthographic projection) : http://en.wikipedia.org/wiki/Orthographic_projection
└ Axonometric projection : http://en.wikipedia.org/wiki/Axonometric_projection
└등각(등축) 투영(Isometric projection) : http://en.wikipedia.org/wiki/Isometric_projection
└부등각 투영(Unisometric projection )
└Dimetric projection
└Trimetric projection
└ Multiview projection
기타 : http://www.tpub.com/engbas/5.htm
