How to use the @antv/matrix-util.vec2.angleTo function in @antv/matrix-util

radius,
            0,
            1,
            1,
            2 * coordCenter.x - start.x,
            2 * coordCenter.y - start.y,
          ],
          [ 'A', radius, radius, 0, 1, 1, start.x, start.y ],
        ];
      }
    } else {
      // 只适用于start和end，yScale值相同，需要判断scale结果

      // 求向量 center -> start 和 center -> end 的顺时针角度
      // 即等于求 start -> center 和 end -> center 的逆时针角度
      const dAngle = vec2.angleTo(
        [ coordCenter.x - start.x, coordCenter.y - start.y ],
        [ coordCenter.x - end.x, coordCenter.y - end.y ],
        0,
      );
      const largeArc = dAngle > Math.PI ? 1 : 0;
      path = [
        [ 'M', start.x, start.y ],
        [ 'A', radius, radius, 0, largeArc, 1, end.x, end.y ],
      ];
    }

    const arcShape = group.addShape('path', {
      zIndex: this.get('zIndex'),
      attrs: _.assign({ path }, this.get('style')),
    });
    arcShape.name = 'annotation-arc'; // 用于事件以及动画识别

const labelOffset = Util.get(this.get('label'), 'offset', 5);
      titleOffset += labelLength + labelOffset;
    }
    // }
    const textStyle = title.textStyle;
    const cfg = Util.mix({}, textStyle);
    if (title.text) {
      const vector = this.getAxisVector(); // 坐标轴方向的向量
      if (autoRotateTitle && Util.isNil(title.rotate)) {
        // 自动旋转并且用户没有设置 title.rotate
        let angle = 0;
        if (!Util.isNumberEqual(vector[1], 0)) {
          // 所有水平坐标轴，文本不转置
          const v1 = [1, 0];
          const v2 = [vector[0], vector[1]];
          angle = vec2.angleTo(v2, v1, true);
        }

        cfg.rotate = angle * (180 / Math.PI);
      } else if (!Util.isNil(title.rotate)) {
        // 用户设置了旋转角度就以用户设置的为准
        cfg.rotate = (title.rotate / 180) * Math.PI; // 将角度转换为弧度
      }

      const sideVector = this.getSideVector(titleOffset);
      let point;
      const position = title.position;
      if (position === 'start') {
        point = {
          x: this.get('start').x + sideVector[0],
          y: this.get('start').y + sideVector[1],
        };