Basic Transformations - 2-d and 3-d Transformations
Consider the xy-coordinate system upon a plane. An object or Obj in a plane can be identified as a set of points. All object point P has coordinates (x,y), consequently the object is the total sum of every its coordinate points as in figure. Here the object is moved to a new position. Every coordinate points P'(x',y') of a new object Obj' can be acquired from the original points P(x,y) through the application of a geometric transformation.