import { Camera } from "./Camera.ts";

/** Orthographic projection camera. */
export class OrthographicCamera extends Camera {
	override type = "OrthographicCamera";

	#left: number;
	#right: number;
	#top: number;
	#bottom: number;

	constructor({
		left = -1,
		right = 1,
		top = 1,
		bottom = -1,
		near = 0.1,
		far = 2000,
		tileSize = 1,
	} = {}) {
		super({ near, far, tileSize });
		this.#left = left;
		this.#right = right;
		this.#top = top;
		this.#bottom = bottom;
		this.updateProjectionMatrix();
	}

	get left(): number {
		return this.#left;
	}

	set left(value: number) {
		this.#left = value;
	}

	get right(): number {
		return this.#right;
	}

	set right(value: number) {
		this.#right = value;
	}

	get top(): number {
		return this.#top;
	}

	set top(value: number) {
		this.#top = value;
	}

	get bottom(): number {
		return this.#bottom;
	}

	set bottom(value: number) {
		this.#bottom = value;
	}

	override updateProjectionMatrix(): void {
		this.projectionMatrix.makeOrthographic(
			this.#left,
			this.#right,
			this.#top,
			this.#bottom,
			this.near,
			this.far,
		);
	}

	override clone(): OrthographicCamera {
		return new OrthographicCamera({
			left: this.#left,
			right: this.#right,
			top: this.#top,
			bottom: this.#bottom,
			near: this.near,
			far: this.far,
			tileSize: this.tileSize,
		});
	}

	override copy(source: Camera, recursive = true): this {
		super.copy(source, recursive);
		if (!(source instanceof OrthographicCamera)) return this;
		this.#left = source.left;
		this.#right = source.right;
		this.#top = source.top;
		this.#bottom = source.bottom;
		return this;
	}
}