/** 计算把图片放入容器时，重设尺寸后大小与位置 */
export function calcResizePostion(
    src: { w: number; h: number },
    to: { w: number; h: number },
    type: "center" | "left" = "left"
) {
    let scaleW = to.w / src.w
    let scaleH = to.h / src.h

    let s = Math.min(scaleW, scaleH)
    let w = Math.round(src.w * s)
    let h = Math.round(src.h * s)

    let x = 0
    let y = 0
    if (type == "center") {
        x = Math.round((to.w - w) / 2)
        y = Math.round((to.h - h) / 2)
    }
    return { x, y, h, w }
}