3D Display Methods 3D Projection Q. What is 3D Projection/Graphical Projection? It is a design technique used to display 3D objects on a 2D surface. Why we are using a 2D surface to display 3D objects? Because all graphics devices are 2D [like Monitor Screen]. When we want to draw 3D objects on a computer monitor. Convert the world coordinates into screen coordinates [i.e., project 3D objection on the 2D plane]. Q. What is the Projection? Process of representing 3D objects into 2D. [i.e., shadow of object]. Q. How an object is projected? By projecting each of its points [create a map of points]. There are infinite points in Object. Take projection of only corner points of an object on a 2D plane than join these projected points by a straight line in the 2D plane. Q. What is a Parallel Projection? Projection of point in 3D space. Parallel Projection is a method for generating a view of a solid object. Project point on the object surface along parallel lines onto the display plane. Q.
