Difference between geometric and coordinate transformation in computer graphics
Answers
In geometric transformation the object itself is moved relative to a stationary coordinate system or background on the other hand in coordinate transformation the object is held stationary while the coordinate system is moved relative to the object.
The difference between geometric and coordinate transformation in computer graphics is that in geometric transformation, the object is moved in respect to the coordinate axes used in geometry. The coordinate axes are taken as stationary in this case.
Whereas in coordinate transformation, only the coordinate axes are moved in respect to the object and the object is taken as stationary in this case.
To explain this, one need to understand that the motion is subjective. Suppose two cars are hypothetically moving parallel at the same speed. Then even though they might be moving at a very high speed, they still would be at rest in reference to each other.
So, when dealing with motion/transformations, in above case, it is always necessary to specify a frame of reference which are co-ordinate axes and object respectively.