import { Color } from "../../math/Color.js";
import { Vector3 } from "../../math/Vector3.js";
import { Vector4 } from "../../math/Vector4.js";
import Node from "../core/Node.js";

type ColorParameter = Node<"float"> | number | Node<"vec3"> | Vector3 | Node<"color"> | Color | Node<"vec4"> | Vector4;

/**
 * Represents a "Color Burn" blend mode.
 *
 * It's designed to darken the base layer's colors based on the color of the blend layer.
 * It significantly increases the contrast of the base layer, making the colors more vibrant and saturated.
 * The darker the color in the blend layer, the stronger the darkening and contrast effect on the base layer.
 *
 * @tsl
 * @function
 * @param {Node<vec3>} base - The base color.
 * @param {Node<vec3>} blend - The blend color. A white (#ffffff) blend color does not alter the base color.
 * @return {Node<vec3>} The result.
 */
export const blendBurn: (base: ColorParameter, blend: ColorParameter) => Node<"vec3">;
/**
 * Represents a "Color Dodge" blend mode.
 *
 * It's designed to lighten the base layer's colors based on the color of the blend layer.
 * It significantly increases the brightness of the base layer, making the colors lighter and more vibrant.
 * The brighter the color in the blend layer, the stronger the lightening and contrast effect on the base layer.
 *
 * @tsl
 * @function
 * @param {Node<vec3>} base - The base color.
 * @param {Node<vec3>} blend - The blend color. A black (#000000) blend color does not alter the base color.
 * @return {Node<vec3>} The result.
 */
export const blendDodge: (base: ColorParameter, blend: ColorParameter) => Node<"vec3">;
/**
 * Represents a "Screen" blend mode.
 *
 * Similar to `blendDodge()`, this mode also lightens the base layer's colors based on the color of the blend layer.
 * The "Screen" blend mode is better for general brightening whereas the "Dodge" results in more subtle and nuanced
 * effects.
 *
 * @tsl
 * @function
 * @param {Node<vec3>} base - The base color.
 * @param {Node<vec3>} blend - The blend color. A black (#000000) blend color does not alter the base color.
 * @return {Node<vec3>} The result.
 */
export const blendScreen: (base: ColorParameter, blend: ColorParameter) => Node<"vec3">;
/**
 * Represents a "Overlay" blend mode.
 *
 * It's designed to increase the contrast of the base layer based on the color of the blend layer.
 * It amplifies the existing colors and contrast in the base layer, making lighter areas lighter and darker areas darker.
 * The color of the blend layer significantly influences the resulting contrast and color shift in the base layer.
 *
 * @tsl
 * @function
 * @param {Node<vec3>} base - The base color.
 * @param {Node<vec3>} blend - The blend color
 * @return {Node<vec3>} The result.
 */
export const blendOverlay: (base: ColorParameter, blend: ColorParameter) => Node<"vec3">;
/**
 * This function blends two color based on their alpha values by replicating the behavior of `THREE.NormalBlending`.
 * It assumes both input colors have non-premultiplied alpha.
 *
 * @tsl
 * @function
 * @param {Node<vec4>} base - The base color.
 * @param {Node<vec4>} blend - The blend color
 * @return {Node<vec4>} The result.
 */
export const blendColor: (base: ColorParameter, blend: ColorParameter) => Node<"vec4">;

export {};