What is Graphical Projection?
There are plenty of definitions out there, let me put it in short and simple language: Projection is a protocol by which transform 3D objects on to a 2D surface.
I was introduced to projection during my high-school time in Vietnam. It was a part of a subject called Công Nghệ (Technology). I still remember I got caught cheating during a test, but it’s not a big deal because that was not the only time I got in trouble (lol)
That’s it! 3D to 2D, how simple. But the problems and the fun occur because no matter how accurate, we cannot transform 100% experience in 3D world on to a piece of paper. Every ethod has its pros and cons, and as the designer we should thoroughly understand them in order to make an accurate consideration.
Here’re some key terms to note:
View Plane/projection plane (PP): is identified with the plane of the monitor. If one takes a photograph of a 3D structure, the surface of the film is the image plane.