/**
 * Paint Stroke
 *
 * Records brush strokes for undo/redo and real-time updates.
 * Each stroke tracks changed pixels for efficient undo.
 */
import { ColorRGBA } from './painter';
export interface PixelChange {
    x: number;
    y: number;
    oldColor: ColorRGBA;
    newColor: ColorRGBA;
}
export interface PaintStroke {
    textureUuid: string;
    layerUuid?: string;
    changes: PixelChange[];
    startTime: number;
    endTime?: number;
}
/**
 * Paint stroke recorder for undo support
 */
export declare class PaintStrokeRecorder {
    private currentStroke;
    private strokes;
    /**
     * Start recording a new stroke
     */
    startStroke(textureUuid: string, layerUuid?: string): void;
    /**
     * Record a pixel change
     */
    recordPixelChange(x: number, y: number, oldColor: ColorRGBA, newColor: ColorRGBA): void;
    /**
     * Finish recording current stroke
     */
    finishStroke(): PaintStroke | null;
    /**
     * Cancel current stroke
     */
    cancelStroke(): void;
    /**
     * Get current stroke
     */
    getCurrentStroke(): PaintStroke | null;
    /**
     * Get all strokes
     */
    getStrokes(): PaintStroke[];
    /**
     * Clear all strokes
     */
    clear(): void;
    /**
     * Get undo data for a stroke
     * Returns pixel changes that can be used to restore previous state
     */
    getUndoData(stroke: PaintStroke): PixelChange[];
}
//# sourceMappingURL=paint_stroke.d.ts.map