@3r/tool/test/vertor2.test.js

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import { v2, Vector2 } from "../index.js";

let description = function () {
  return ["#### Vertor2 二维向量", "包含一些与平面坐标系的方法.", "", "以下是相关示例:"];
};

let run = function () {
  console.log("向量相加", v2(1, 1).plus(v2(2, 2)));
  console.log("向量相减", v2(1, 1).subtract(v2(2, 2)));
  console.log("向量相乘", v2(2, 3).multiply(v2(2, 2)));
  console.log("向量相除", v2(2, 3).divide(v2(2, 2)));
  console.log("叉乘", v2(2, 3).multiplicationCross(v2(2, 2)));
  console.log("点乘", v2(2, 3).dotProduct(v2(2, 2)));
  console.log("检测两线段是否交叉", Vector2.checkCross(v2(0, 1), v2(10, 1), v2(1, 0), v2(1, 10)));
  console.log("检测p点是否在点p1,p2,p3组成的三角形内", Vector2.checkInTriangle(v2(0, 1), v2(0, 0), v2(2, 0), v2(0, 2)));
  console.log("检测p点是否在点p1,p2,p3,p4组成的矩形内", Vector2.checkInRectangle(v2(0, 1), v2(0, 0), v2(1, 0), v2(1, 1), v2(0, 1)));
  console.log("p点绕o点旋转angle°", Vector2.rotateAroundPoint(v2(1, 0), v2(0, 0), 90));
  console.log("计算p1到p2两点之间的距离 保留3位小数", Vector2.distance(v2(0, 0), v2(1, 0)));
  console.log("计算两直线的夹角角度", Vector2.includedAngle(v2(1, 0), v2(1, 1)));
  console.log("在距离处获取点", Vector2.getPointAtDist(v2(0, 0), v2(-1, 0), 0.5));
};

try {
  describe("Vertor2 二维向量模块", function () {
    it("向量相加", function () {
      expect(v2(1, 1).plus(v2(2, 2))).toEqual(new Vector2(3, 3));
    });
    it("向量相减", function () {
      expect(v2(1, 1).subtract(v2(2, 2))).toEqual(new Vector2(-1, -1));
    });
    it("向量相乘", function () {
      expect(v2(2, 3).multiply(v2(2, 2))).toEqual(new Vector2(4, 6));
    });
    it("向量相除", function () {
      expect(v2(2, 3).divide(v2(2, 2))).toEqual(new Vector2(1, 1.5));
    });
    it("叉乘", function () {
      expect(v2(2, 3).multiplicationCross(v2(2, 2))).toEqual(-2);
    });
    it("点乘", function () {
      expect(v2(2, 3).dotProduct(v2(2, 2))).toEqual(10);
    });
    it("检测两线段是否交叉", function () {
      expect(Vector2.checkCross(v2(0, 1), v2(10, 1), v2(1, 0), v2(1, 10))).toEqual(true);
    });
    it("检测p点是否在点p1,p2,p3组成的三角形内", function () {
      expect(Vector2.checkInTriangle(v2(0, 1), v2(0, 0), v2(2, 0), v2(0, 2))).toEqual(true);
    });
    it("检测p点是否在点p1,p2,p3,p4组成的矩形内", function () {
      expect(Vector2.checkInRectangle(v2(0, 1), v2(0, 0), v2(1, 0), v2(1, 1), v2(0, 1))).toEqual(true);
    });
    it("p点绕o点旋转angle°", function () {
      expect(Vector2.rotateAroundPoint(v2(1, 0), v2(0, 0), 90)).toEqual(v2(0, -1));
    });
    it("计算p1到p2两点之间的距离 保留3位小数", function () {
      expect(Vector2.distance(v2(0, 0), v2(1, 0))).toEqual(1);
    });
    it("计算两直线的夹角角度", function () {
      expect(Vector2.includedAngle(v2(1, 0), v2(1, 1))).toEqual(45);
    });
    it("转换字符串", function () {
      expect(v2(1, 1).toString()).toEqual("Vector2(1,1)");
    });
    it("在距离处获取点", function () {
      expect(Vector2.getPointAtDist(v2(0, 0), v2(3, 4), 2.5)).toEqual(v2(1.5, 2));
      expect(Vector2.getPointAtDist(v2(0, 0), v2(1, 0), 0.5)).toEqual(v2(0.5, 0));
      expect(Vector2.getPointAtDist(v2(0, 0), v2(0, 1), 0.5)).toEqual(v2(0, 0.5));
    });
  });
} catch (error) {
  // describe is not defined 无需理会 调用方式不一致
}

export { run, description };