Unity - Understanding The (X,Y,Z) Also Called The Cartesian Coordinate Method - Tutorial Number 002

Understanding The (X,Y,Z) Cartesian Coordinates Method

                                                  By - Michael Priest

What is the Cartesian Method

     Unity uses the Cartesian Method to represent positions on the Plain in the 3D Environment you will often see these measurements in Parenthesis Such as (15,03,10)  in that order represents the values of (X,Y,Z) in 3D Space. The X value is used for Horizontal Locations and Y is used for Vertical Positions and Z value represents Depth. The order in which you write these values are important as they are used in Programming Languages as well has having the effect of keeping them nice and neat.

                    Image from https://en.wikipedia.org/wiki/Three-dimensional_space_(mathematics)

Space In The 3D World

     There are a couple other very important concepts that we need to understand in our new 3D world that that is there are two forms of space that you will be using and this is what is refereed to as World Space, World Space is the area of the Game that you will be creating in other words the World at large that you will be creating all of your Objects in. The other Space is typically called Object Space and this is relative to said Objects that are placed within the 3D environment that you creating or importing into Unity. In trying to simplify this as much as I can think of the World Space as an empty room it has measurements and then think of a table in that same room it also has measurement that fit inside that room, The Table is an Object and Objects have Properties and one of those Properties is it's Size and there are many other Properties of Characteristics of a Table and we will get into those another time but for now we will focus on the fact that Objects have measurements that take up space inside your World. 

Introduction to 3D Vectors

     In the simplest terms Vectors are measurements of Space, Vectors as in other measurements have length and Vectors also have Directions. Vectors allow us to measure distances between Objects as well as the direction of said Objects in the 3D Realm.

Resources For Understanding 3D Vectors

     These videos go way more into depth of understanding Vectors than you will need to know at this point in time but it is a good idea to get familiar with the concepts.

Intro to 3D Vectors Youtube.

Angles Of Vectors In 3D Space Youtube