天体视大小观测模拟（修正版）
.main-container {
width: 1200px;
height: 800px;
margin: 20px auto;
position: relative;
background: url('https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2013/04/solar_system/12761224-2-eng-GB/Solar_System_pillars.jpg') center/cover;
}
.celestial {
position: absolute;
border-radius: 50%;
transition: all 0.3s ease-out;
}
#sun {
width: 180px;
height: 180px;
background: url('https://upload.wikimedia.org/wikipedia/commons/b/b4/The_Sun_by_the_Atmospheric_Imaging_Assembly_of_NASA%27s_Solar_Dynamics_Observatory_-_20100819.jpg') center/cover;
top: 20%;
left: 15%;
}
#earth {
width: 100px;
height: 100px;
background: url('https://upload.wikimedia.org/wikipedia/commons/9/97/The_Earth_seen_from_Apollo_17.jpg') center/cover;
top: 50%;
left: 45%;
transform: translate(-50%, -50%);
box-shadow: 0 0 30px rgba(0, 128, 255, 0.5);
}
#moon {
width: 40px;
height: 40px;
background: url('https://upload.wikimedia.org/wikipedia/commons/e/e1/FullMoon2010.jpg') center/cover;
top: 55%;
left: 55%;
}
.observation-point {
position: absolute;
width: 35px;
height: 35px;
background: rgba(255,255,255,0.9);
border-radius: 50%;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
font-weight: bold;
transition: all 0.3s;
border: 2px solid cyan;
}
/* 观测点新定位 */
#pointA { top: 40%; left: 30%; } /* 太阳与地球中间 */
#pointB { top: 70%; left: 70%; } /* 深空位置 */
#pointC { /* 地球表面 */
top: 50%;
left: 45%;
transform: translate(-50%, -50%);
background: rgba(255,255,255,0.7);
}
.viewport {
width: 400px;
height: 300px;
border: 3px solid rgba(255,255,255,0.8);
position: fixed;
top: 50px;
right: 50px;
background: rgba(0,0,0,0.95);
overflow: hidden;
border-radius: 10px;
}
.view-object {
position: absolute;
border-radius: 50%;
transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}
#viewSun {
background: radial-gradient(#ffae00, #ff4500);
box-shadow: 0 0 80px #ff8c00;
}
#viewMoon {
background: radial-gradient(#888, #444);
box-shadow: 0 0 40px #666;
}
<div class="main-container">
<div class="celestial"></div>
<div class="celestial"></div>
<div class="celestial"></div>
<div class="observation-point">A</div>
<div class="observation-point">B</div>
<div class="observation-point">C</div>
<div class="viewport">
<div class="view-object"></div>
<div class="view-object"></div>
</div>
</div>
const viewSun = document.getElementById('viewSun');
const viewMoon = document.getElementById('viewMoon');
const viewConfig = {
A: { // 太阳与地球中间
sunSize: 180,
sunX: '15%',
sunY: '30%',
moonSize: 40,
moonX: '75%',
moonY: '60%'
},
B: { // 深空观测点
sunSize: 60,
sunX: '80%',
sunY: '70%',
moonSize: 160,
moonX: '20%',
moonY: '30%'
},
C: { // 地球表面
sunSize: 100,
sunX: '30%',
sunY: '45%',
moonSize: 95,
moonX: '70%',
moonY: '45%'
}
};
function setView(position) {
const cfg = viewConfig[position];
// 设置太阳参数
viewSun.style.width = viewSun.style.height = `${cfg.sunSize}px`;
viewSun.style.left = cfg.sunX;
viewSun.style.top = cfg.sunY;
// 设置月球参数
viewMoon.style.width = viewMoon.style.height = `${cfg.moonSize}px`;
viewMoon.style.left = cfg.moonX;
viewMoon.style.top = cfg.moonY;
}
// 初始化设置
setView('C');
