Slider to change value of vector. Mouse to point it in different directions.
The purple line is the original vector. The blue + red lines are the X and Y vectors that add up to the vector. The black line is the X and Y lines re-combined to a vector. If I did it right, the black and purple lines should be the same. This is going to be used for movement in a game I'm making. All by meeeee. I hate trigonometry.
