接口 CanvasTransform

interface CanvasTransform {
    getTransform(): DOMMatrix;
    resetTransform(): void;
    rotate(angle: number): void;
    scale(x: number, y: number): void;
    setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void;
    setTransform(transform?: DOMMatrix2DInit): void;
    transform(a: number, b: number, c: number, d: number, e: number, f: number): void;
    translate(x: number, y: number): void;
}