/**
 * Painter
 *
 * Core texture painting and drawing system.
 * Provides pixel-level texture editing capabilities.
 */
import { Texture } from './texture';
export interface ColorRGBA {
    r: number;
    g: number;
    b: number;
    a: number;
}
export interface BrushOptions {
    size?: number;
    softness?: number;
    opacity?: number;
    shape?: 'circle' | 'square';
    color?: ColorRGBA;
    erase?: boolean;
    lockAlpha?: boolean;
}
export interface PaintContext {
    texture: Texture;
    canvas: HTMLCanvasElement;
    ctx: CanvasRenderingContext2D;
    offset: [number, number];
    element?: any;
    face?: string;
    x?: number;
    y?: number;
}
export interface PixelEditCallback {
    (px: number, py: number, currentColor: ColorRGBA, localOpacity: number): ColorRGBA;
}
/**
 * Core Painter class for texture painting
 */
export declare class Painter {
    private static currentPixel;
    private static brushChanges;
    private static current;
    private static selection;
    private static mirrorPainting;
    private static lockAlpha;
    private static eraseMode;
    /**
     * Edit texture with undo support
     */
    static edit(texture: Texture, callback: (canvas: HTMLCanvasElement, context: PaintContext) => void, options?: {
        no_undo?: boolean;
        no_undo_init?: boolean;
        no_undo_finish?: boolean;
        edit_name?: string;
        use_cache?: boolean;
        no_update?: boolean;
    }): void;
    /**
     * Get pixel color at coordinates
     */
    static getPixelColor(ctx: CanvasRenderingContext2D, x: number, y: number): ColorRGBA | null;
    /**
     * Modify a section of canvas
     */
    static modifyCanvasSection(ctx: CanvasRenderingContext2D, x: number, y: number, w: number, h: number, offset: [number, number] | undefined, callback: (editPixel: (px: number, py: number, editPx: (color: ColorRGBA) => ColorRGBA) => void) => void): void;
    /**
     * Edit circle area
     */
    static editCircle(ctx: CanvasRenderingContext2D, x: number, y: number, radius: number, softness: number, editPx: PixelEditCallback): void;
    /**
     * Edit square area
     */
    static editSquare(ctx: CanvasRenderingContext2D, x: number, y: number, size: number, softness: number, editPx: PixelEditCallback): void;
    /**
     * Combine colors with opacity
     */
    static combineColors(baseColor: ColorRGBA, newColor: ColorRGBA, opacity: number): ColorRGBA;
    /**
     * Blend colors using different blend modes
     */
    static blendColors(baseColor: ColorRGBA, newColor: ColorRGBA, opacity: number, mode: 'multiply' | 'screen' | 'overlay' | 'darken' | 'lighten' | 'color-dodge' | 'color-burn' | 'hard-light' | 'soft-light' | 'difference' | 'exclusion'): ColorRGBA;
    /**
     * Paint with brush
     */
    static paintBrush(ctx: CanvasRenderingContext2D, x: number, y: number, options: BrushOptions, editPx: PixelEditCallback): void;
    /**
     * Get blend mode composite operation for canvas
     */
    static getBlendModeCompositeOperation(mode: string): GlobalCompositeOperation;
    /**
     * Scan canvas pixels
     */
    static scanCanvas(ctx: CanvasRenderingContext2D, x: number, y: number, w: number, h: number, callback: (px: number, py: number, pixelData: Uint8ClampedArray) => void): void;
}
//# sourceMappingURL=painter.d.ts.map