TianVTK

VTK world consists of nine basic objects in the model (see Reference):

Render Master - coordinates device-independent methods and creates rendering windows.
Render Window - manages a window on the display device. One or more renderers draw into a render window to generate a scene (i.e., final image).
Renderer - coordinates the rendering of lights, cameras, and actors.
Light - illuminates the actors in a scene.
Camera - defines the view position, focal point, and other camera characteristics.
Actor - an object drawn by a renderer in the scene. Actors are defined in terms of mapper, property, and a transform objects.
Property - represents the rendered attributes of an actor including object color, lighting (e.g., specular, ambient, diffuse), texture map, drawing style (e.g., wireframe or shaded); and shading style.
Mapper - represents the geometric definition of an actor and maps the object through a lookup table. More than one actor may refer to the same mapper.
Transform - an object that consists of a 4x4 transformation matrix and methods to modify the matrix. It specifies the position and orientation of actors, cameras, and lights.