对 observer 做一些样式上的计算

每一个 FloorplanServer_observer 对应一个 observer

FloorplanServer_observer 和 observer 在自身数组中的索引坐标应该是相同的

interface FloorplanServerObserver {
    floor_index: number;
    index: number;
    position: FloorplanServerPosition;
    position_in_image: FloorplanServerImagePosition;
}

Properties

floor_index: number
index: number
position_in_image: FloorplanServerImagePosition