MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The viewing-coordinate system is used in graphics packages as a reference for specifying the observer viewing position and the position of the projection plane. Workstation transformation maps the coordinate positions on the projection plane to the output device.

Detailed explanation-2: -View coordinate system: Usually a left handed system called the UVN system is used., the y-axis of the view coordinate system is the perpendicular projection of on the view plane., the x-axis of the view coordinates, is orthogonal to and i.e. Positive and are to the right and up-direction from eye’s point of view.

Detailed explanation-3: -A projection plane, or plane of projection, is a type of view in which graphical projections from an object intersect. Projection planes are used often in descriptive geometry and graphical representation. A picture plane in perspective drawing is a type of projection plane.

Detailed explanation-4: -World coordinate – It is the Cartesian coordinate w.r.t which we define the diagram, like Xwmin, Xwmax, Ywmin, Y. Device Coordinate –It is the screen coordinate where the objects are to be displayed, like Xvmin, Xvmax, Yvmin, Y. Window –It is the area on the world coordinate selected for display.

Detailed explanation-5: -Projection are defined as mapping of three-dimensional points to a two-dimensional plane. There are two type of projection parallel and perspective.