js坐标计算方向

function getDirection(point1, point2) {
    let dx = point2.x - point1.x;
    let dy = point2.y - point1.y;

    if (Math.abs(dx) > Math.abs(dy)) {
        return dx > 0 ? '右' : '左';
    } else {
        return dy > 0 ? '下' : '上';
    }
}

function getDiagonalDirection(point1, point2) {
    let dx = point2.x - point1.x;
    let dy = point2.y - point1.y;

    if (dx > 0 && dy > 0) return '东北';
    if (dx > 0 && dy < 0) return '东南';
    if (dx < 0 && dy > 0) return '西北';
    if (dx < 0 && dy < 0) return '西南';
}

function getAngleDirection(point1, point2) {
    let dx = point2.x - point1.x;
    let dy = point2.y - point1.y;
    let angle = Math.atan2(dy, dx) * (180 / Math.PI); // 转换为角度

    if (angle < 0) angle += 360; // 确保角度为正

    return angle;
}