十六进制转RGB ---颜色-color

// 十六进制转RGB
function hexToRgb(hex: string) {
  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result
    ? [
        parseInt(result[1], 16),
        parseInt(result[2], 16),
        parseInt(result[3], 16),
      ]
    : null;
}

function adjustColor(color: string, depth: number, alpha: number) {
  // 判断颜色格式
  const isRgb = color.length === 3 || color.length === 4;
  const isHex = /^#[0-9a-fA-F]{6}$/.test(color);

  if (!isRgb && !isHex) {
    throw new Error(
      "Invalid color format. Accepted formats: RGB (e.g., [255, 0, 0]) or Hex (e.g., #ff0000)"
    );
  }

  // 将RGB或十六进制颜色转为RGBA格式
  let rgbaColor: any;
  if (isRgb) {
    rgbaColor = [...color, alpha];
  } else if (isHex) {
    const rgbColor = hexToRgb(color) as number[];
    rgbaColor = [...rgbColor, alpha];
  }

  // 根据深浅值调整RGBA值
  rgbaColor = adjustColorValue(rgbaColor, depth);

  return `rgba(${rgbaColor[0]},${rgbaColor[1]},${rgbaColor[2]},${rgbaColor[3]})`;
}

// 十六进制转RGB
function hexToRgb(hex: string) {
  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result
    ? [
        parseInt(result[1], 16),
        parseInt(result[2], 16),
        parseInt(result[3], 16),
      ]
    : null;
}

// 调整颜色深浅值和透明度
function adjustColorValue(rgba: number[], depth: number) {
  return [
    Math.round(rgba[0] + depth) > 255 ? 255 : Math.round(rgba[0] + depth),
    Math.round(rgba[1] + depth) > 255 ? 255 : Math.round(rgba[1] + depth),
    Math.round(rgba[2] + depth) > 255 ? 255 : Math.round(rgba[2] + depth),
    rgba[3], // 保持透明度不变
  ];
}