/**
 * Calculate the scale factor needed to fit device dimensions within max dimension.
 * Returns 1.0 if no scaling needed.
 */
export declare function calculateScaleFactor(deviceWidth: number, deviceHeight: number, maxDimension: number): number;
export interface Bounds {
    left: number;
    top: number;
    right: number;
    bottom: number;
}
/**
 * Convert device coordinates to image coordinates.
 */
export declare function toImageSpace(deviceX: number, deviceY: number, scaleFactor: number): {
    x: number;
    y: number;
};
/**
 * Convert image coordinates to device coordinates.
 */
export declare function toDeviceSpace(imageX: number, imageY: number, scaleFactor: number): {
    x: number;
    y: number;
};
/**
 * Convert bounds from device space to image space.
 */
export declare function boundsToImageSpace(bounds: Bounds, scaleFactor: number): Bounds;