“向量”在javascript图形库中是什么意思

Question

I am currently learning to use Springy which is a force directed graph layout algorithm in JavaScript. There is a demo code springyui.js springyui.js , in the code, there are several places define " vector ", eg var targetBB = {bottomleft: new Vector(-2, -2), topright: new Vector(2, 2)}; .

I don't understand what is the mean of vector in javascript graphic application, what does vector defines generally?

Answer 1

It is a 2D vector . In that library you could just consider it as a container of 2 numbers ( x , y ) representing a direction and magnitude on a plane.