Add functionality to existing PIXI Class

[charlie_says]

Apologies for the basic question, i don't want to extend from a PIXI Class, in this case PIXI.Point, I want to add some functionality to the existing class (if possible)

But, I've not got very far - can anyone give me a hint as to how to do it?

 

Thanks

[mobileben]

Good question. Curious, what are you trying to do (ie. why don't you want to extend from PIXI.Point)? Are you using Typescript? If so I notice that the objects are not created with prototypes.

[charlie_says]

PIXI.Point doesn't have point.interpolate.

[ivan.popelyshev]

PIXI.Point.prototype.something = function() { ... }

[ivan.popelyshev]

dont forget to add it to PIXI.ObservablePoint too. --- Explanation on why do we have two point clases will take too long. Its just the way it is.

[charlie_says]

 thanks!

 

[charlie_says]

Just as an update, if anyone else is interested. In ES6 you don't need prototype

PIXI.Point.interpolate = function (a, b, f, out) {

    if (typeof out === "undefined") { out = new PIXI.Point(); }

    return out.set(a.x + (b.x - a.x) * f, a.y + (b.y - a.y) * f);

};

PIXI.ObservablePoint.interpolate = function (a, b, f, out) {

    if (typeof out === "undefined") { out = new PIXI.ObservablePoint(); }

    return out.set(a.x + (b.x - a.x) * f, a.y + (b.y - a.y) * f);

};

works fine for me.