Question

im trying to great a array of vector3’s in JavaScript, im trying to create a Vertex, Edge, Face structure for a openGL cube, now im quite new to JavaScript but as HTML5 supports it, i feel JS should be a language i understand and now :),

Now I dont know how to declare a struct in JS and then how I would implement it into a array type?

I have something like this but i’m not sure if that’s correct.

var vector3 = (x=0,y=0,z=0);

but then how would I use that for a array?

Cheers for the help.

Answer 1

I would create an Object:

var vector3 = {
    x:0,
    y:0,
    z:0
};

You can access the individual fields with code such as:

var tmp = vector3.x;

To place points in a vector

var myPolygon = [
    {x: 3, y: 8, z: -8},
    {x: 3, y: 4, z: 10},
    {x: 9, y: 8, z: -8},
];

You could write a vector type with this too so you do not have to write x, y, and z every time:

var vec3 = {x:0,y:0,z:0};

var demoVec = vec3;
var demo2Vec = vec3;
demoVec.x+=demo2Vec.y;