Basic Geometric Transformations
The process to change the geometry of each object by changing its size, position or orientation. These operations are called geometric transformations.
We translate objects in the (x, y) plane to new positions by adding translation vectors to the coordinates of their vertices.
x’ = x + d x
y’ = y + d y
In matrix form this is:
Objects can be stretched or shrinked by scaling their vertices. Their coordinates have to be multiplied by the