记一道面试题

用你熟悉的语言数显一个 二维矩阵 class， 包含intersection成员函数，返回相交后的结果

class triangle {
    constructor(tri1, tri2) {
        this.tri1 = tri1
        this.tri2 = tri2
    }

    intersection() {
        let minx = Math.max(this.tri1.x1, this.tri2.x1)
        let maxx = Math.min(this.tri1.x2, this.tri2.x2)
        let miny = Math.max(this.tri1.y1, this.tri2.y1)
        let maxy = Math.min(this.tri1.y2, this.tri2.y2)

        if (minx > maxx || miny > maxy) {
            return  -1
        } else {
            return (maxy - miny) * (maxx - minx)
        }
    }
}

/**
 * 测试用例1
 * 期望: 1
 * 输出: 1
 */

let t1 = {
    x1: 1,
    x2: 2,
    y1: 1,
    y2: 2,
}

let t2 = {
    x1: 1,
    x2: 3,
    y1: 1,
    y2: 3,
}

let test1 = new triangle(t1, t2)
console.log(test1.intersection())

/**
 * 测试用例2
 * 期望: -1
 * 输出: -1
 */

let t1 = {
    x1: -1,
    x2: 3,
    y1: 1,
    y2: -2,
}

let t2 = {
    x1: 1,
    x2: 3,
    y1: 2,
    y2: 3,
}

let test1 = new triangle(t1, t2)
console.log(test1.intersection())

哦，题也不难。。但是我不会，我是菜鸡