import { PerspectiveCamera } from "three";

let initialized = false;

// Wrap camera FOV to allow animation of fov
export function initCameraExtensions() {
    if (initialized) return;
    initialized = true;

    Object.defineProperty(PerspectiveCamera.prototype, "fov", {
        get: function () {
            return this._fov;;
        },
        set: function (val) {
            const changed = val !== this._fov;
            this._fov = val;
            if (changed && this.view !== undefined) this.updateProjectionMatrix();
        },
        configurable: true
    });

    Object.defineProperty(PerspectiveCamera.prototype, "near", {
        get: function () {
            return this._near;
        },
        set: function (val) {
            const changed = val !== this._near;
            this._near = val;
            if (changed && this.view !== undefined) this.updateProjectionMatrix();
        },
        configurable: true
    });

    Object.defineProperty(PerspectiveCamera.prototype, "far", {
        get: function () {
            return this._far;
        },
        set: function (val) {
            const changed = val !== this._far;
            this._far = val;
            if (changed && this.view !== undefined) this.updateProjectionMatrix();
        },
        configurable: true
    });
}