Thiết kế flash - Projection theory

Projection TheoryPerspective and Parallel ProjectionsProjection TheoryA projection is a mapping of a 3D space onto a 2D subspace 2D space is called the projection planeProjection also refers to image resulting from such a mapping Classification of ProjectionsCommon Elements of a Projection SystemCenter of Projection (Perspective)/Direction of Projection (Parallel)Projection PlaneObject(s) to be projectedProjectorsSome TerminologyBounding Box = Principal Enclosing Box (PEB)Center of Projection = Station Point = Viewpoint of observerProjection Plane = Viewplane = Picture PlaneProjectors = Sightlines = Line of Sight Projection TheoryPerspective and Parallel Projections