import Renderer from "./renderer";
import { ZMap } from "../utils/types";
import Fluid from "../physics/fluid/fluid";
import { vec2 } from "gl-matrix";
/**
 * Renders {@link Fluid}s using a marching squares metaball algorithm.
 */
export default abstract class FluidRenderer extends Renderer {
    private static fluidQueue;
    /**
     * Renders all fluids in the queue and clears the queue.
     *
     * If the {@link Renderer}'s camera has not been set nothing will be rendered.
     */
    static flush(z: number): void;
    /**
     * Renders a {@link Fluid} using a metaball shader.
     *
     * @param fluid The fluid to render
     * @param quad The vertices of the quad to render to (should be size of camera's viewport)
     * @param indices The indices of the quad to render to
     * @param quadDimensions The width and height of the quad
     */
    static renderFluid(fluid: Fluid, quad: Float32Array, indices: Uint16Array, quadDimensions: vec2): void;
    /**
     * Adds a {@link Fluid} to the render queue.
     *
     * @param fluid The fluid to queue for rendering
     */
    static queueFluid(fluid: Fluid): void;
    /**
     * Gets the fluid render queue.
     *
     * @returns the fluid render queue
     */
    static getFluidQueue(): ZMap<Fluid[]>;
    /**
     * Gets the maximum zIndex used by the queue.
     *
     * @returns The max zIndex of the queue
     */
    static getQueueMax(): number;
    /**
     * Gets the minimum zIndex used by the queue.
     *
     * @returns The min zIndex of the queue
     */
    static getQueueMin(): number;
}