export declare const drawCircle: (ctx: CanvasRenderingContext2D, x: number, y: number, diameter?: number) => void;
export declare const drawSquare: (ctx: CanvasRenderingContext2D, centerX: number, centerY: number, size?: number) => void;
export declare const drawTriangle: (ctx: CanvasRenderingContext2D, centerX: number, centerY: number, sideLength?: number) => void;
export declare const drawPlus: (ctx: CanvasRenderingContext2D, centerX: number, centerY: number, size?: number) => void;
export declare const drawEx: (ctx: CanvasRenderingContext2D, centerX: number, centerY: number, size?: number) => void;
export declare const drawTritip: (ctx: CanvasRenderingContext2D, centerX: number, centerY: number, size?: number) => void;