/**
 * TransformController
 *
 * Used to prepare and manage a 2D transform matrix
 */
export declare class TransformController {
    svg: SVGSVGElement;
    matrix: SVGMatrix;
    point: SVGPoint;
    savedTransforms: any[];
    /**
     * Constructor
     */
    constructor();
    /**
     * Reset the transform matrix (identity matrix)
     */
    resetMatrix(): void;
    /**
     * Returns the current transform matrix
     */
    getTransformMatrix(): any;
    /**
     * Extract scale from transform matrix
     */
    getScale(): {
        sx: number;
        sy: number;
    };
    /**
     * Save current transform state
     */
    save(): void;
    /**
     * Restore from the previous transform state
     */
    restore(): void;
    /**
     * Scale matrix
     * @param sx scale in x
     * @param sy scale in y
     */
    scale(sx: number, sy: number): void;
    /**
     * Rotate matrix
     * @param radians angle
     */
    rotate(radians: number): void;
    /**
     * Translate matrix
     * @param dx translate in x
     * @param dy translate in y
     */
    translate(dx: number, dy: number): void;
    /**
     * Transform matrix multiplying with another matrix
     */
    transform(a: number, b: number, c: number, d: number, e: number, f: number): void;
    /**
     * Set matrix values
     */
    setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void;
    /**
     * Transform a point using the transform matrix
     */
    transformedPoint(x: number, y: number): any;
}