d3js如何获得旋转矩形的角坐标？

// 导入d3.js库
import * as d3 from 'd3';

// 定义矩形的中心点坐标、宽度、高度和旋转角度
const centerX = 100;
const centerY = 100;
const width = 200;
const height = 100;
const rotationAngle = 45; // 旋转角度，单位为度

// 创建SVG画布
const svg = d3.select('body')
  .append('svg')
  .attr('width', 500)
  .attr('height', 500);

// 创建矩形元素
const rect = svg.append('rect')
  .attr('x', centerX - width / 2)
  .attr('y', centerY - height / 2)
  .attr('width', width)
  .attr('height', height)
  .attr('fill', 'blue');

// 进行旋转变换
rect.attr('transform', `rotate(${rotationAngle}, ${centerX}, ${centerY})`);

// 计算旋转后的角坐标
const topLeft = getRotatedPoint(centerX - width / 2, centerY - height / 2, centerX, centerY, rotationAngle);
const topRight = getRotatedPoint(centerX + width / 2, centerY - height / 2, centerX, centerY, rotationAngle);
const bottomRight = getRotatedPoint(centerX + width / 2, centerY + height / 2, centerX, centerY, rotationAngle);
const bottomLeft = getRotatedPoint(centerX - width / 2, centerY + height / 2, centerX, centerY, rotationAngle);

// 打印旋转后的角坐标
console.log('Top Left:', topLeft);
console.log('Top Right:', topRight);
console.log('Bottom Right:', bottomRight);
console.log('Bottom Left:', bottomLeft);

// 计算旋转后的点坐标
function getRotatedPoint(x, y, cx, cy, angle) {
  const radians = angle * Math.PI / 180;
  const cos = Math.cos(radians);
  const sin = Math.sin(radians);
  const nx = (cos * (x - cx)) + (sin * (y - cy)) + cx;
  const ny = (cos * (y - cy)) - (sin * (x - cx)) + cy;
  return [nx, ny];
}