/** Viewport dimensions in device-independent canvas pixels. */
export interface PixelPerfectViewport {
    width: number;
    height: number;
}
/** The orthographic bounds and scale derived from a pixel-perfect camera config. */
export interface PixelPerfectFrustum {
    left: number;
    right: number;
    top: number;
    bottom: number;
    zoom: number;
    scale: number;
}
/**
 * Computes an orthographic frustum whose world units map to the requested pixel density.
 * Integer scaling chooses the largest whole-number density multiplier available in the viewport.
 */
export declare function pixelPerfectFrustum(viewport: PixelPerfectViewport, pixelsPerUnit: number, integerScale?: boolean): PixelPerfectFrustum;
/** Snaps a camera position to the authored pixel grid without changing its orientation. */
export declare function snapPixelPerfectPosition<T extends {
    x: number;
    y: number;
    z: number;
}>(position: T, pixelsPerUnit: number): T;