import { AbstractShaderNode } from '../../core/AbstractShaderNode';
import { Socket } from '../../core/Socket';
/**
 * A shader node that performs CSG (Constructive Solid Geometry) subtraction operations.
 * This node computes the boolean difference between two signed distance fields (SDFs),
 * effectively "cutting away" one shape from another.
 *
 * The operation is: max(base, -subtractor)
 * - `base`: The shape to subtract FROM (the preserved shape)
 * - `subtractor`: The shape that does the subtracting (removes from base)
 *
 * Users should provide raw SDF values for both inputs. The shader internally
 * negates the `subtractor` input to perform the CSG subtraction.
 *
 * @example
 * ```typescript
 * // Create a CSG subtraction node
 * const opSubtractionNode = new OpSubtractionShaderNode();
 *
 * // Connect inputs: base shape and subtracting shape
 * const baseSocket = opSubtractionNode.getSocketInputBase();
 * const subtractorSocket = opSubtractionNode.getSocketInputSubtractor();
 * const outputSocket = opSubtractionNode.getSocketOutput();
 * ```
 */
export declare class OpSubtractionShaderNode extends AbstractShaderNode {
    /**
     * Creates a new OpSubtractionShaderNode with the specified composition and component types.
     *
     */
    constructor();
    /**
     * Gets the base shape input socket.
     * This socket represents the shape to subtract FROM (the preserved shape).
     * Provide the raw SDF value of the base shape.
     *
     * @returns The base shape input socket
     */
    getSocketInputBase(): Socket<string, import("../../..").CompositionTypeEnum, import("../../..").ComponentTypeEnum, import("../../core/Socket").SocketDefaultValue>;
    /**
     * Gets the subtractor shape input socket.
     * This socket represents the shape that does the subtracting (removes from base).
     * Provide the raw SDF value - the shader will handle the negation internally.
     *
     * @returns The subtractor shape input socket
     */
    getSocketInputSubtractor(): Socket<string, import("../../..").CompositionTypeEnum, import("../../..").ComponentTypeEnum, import("../../core/Socket").SocketDefaultValue>;
    /**
     * Gets the output socket that contains the result of the subtraction operation.
     *
     * @returns The output socket containing the subtraction result
     */
    getSocketOutput(): Socket<string, import("../../..").CompositionTypeEnum, import("../../..").ComponentTypeEnum, import("../../core/Socket").SocketDefaultValue>;
}