OpenSource
/
dc-sdk
kopie van https://github.com/dvt3d/dc-sdk

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <title>dc-example</title>
  <script src='/libs/dc-sdk/dc.min.js'></script>
  <script src="../dat.gui.min.js"></script>
  <link href='/libs/dc-sdk/dc.min.css' type='text/css' rel='stylesheet'>
  <link href='../index.css' type='text/css' rel='stylesheet'>
</head>

<body>

<div id="viewer-container" class="viewer-container"></div>
<div class="btn-box">
  <ul>
    <li><button onclick="changeType(0)">白天</button></li>
    <li><button onclick="changeType(1)">黄昏</button></li>
    <li><button onclick="changeType(2)">夜晚</button></li>
    <li><button onclick="changeType(3)">默认</button></li>
  </ul>
</div>
<script>
  let viewer = undefined

  let skyBoxes=[]

  let defaultSkyBox = undefined

  let selectedType =0

  let distance = 40000 // 距离阈值

  function changeType(type){
    selectedType = type
  }

  function initSkyBox(){
    // 添加 skyBox
    skyBoxes.push(new DC.GroundSkyBox({
        sources:{
          positiveX: `../assets/images/sky-box/2/right.png`,
          negativeX: `../assets/images/sky-box/2/left.png`,
          positiveY: `../assets/images/sky-box/2/down.png`,
          negativeY: `../assets/images/sky-box/2/up.png`,
          positiveZ: `../assets/images/sky-box/2/back.png`,
          negativeZ: `../assets/images/sky-box/2/front.png`
        }
      }),
      new DC.GroundSkyBox({
        sources:{
          positiveX: `../assets/images/sky-box/5/right.png`,
          negativeX: `../assets/images/sky-box/5/left.png`,
          positiveY: `../assets/images/sky-box/5/down.png`,
          negativeY: `../assets/images/sky-box/5/up.png`,
          positiveZ: `../assets/images/sky-box/5/back.png`,
          negativeZ: `../assets/images/sky-box/5/front.png`
        }
      }),
      new DC.GroundSkyBox({
        sources:{
          positiveX: `../assets/images/sky-box/6/right.jpg`,
          negativeX: `../assets/images/sky-box/6/left.jpg`,
          positiveY: `../assets/images/sky-box/6/down.jpg`,
          negativeY: `../assets/images/sky-box/6/up.jpg`,
          positiveZ: `../assets/images/sky-box/6/back.jpg`,
          negativeZ: `../assets/images/sky-box/6/front.jpg`
        }
      }),
      defaultSkyBox
    )
  }

  function initViewer() {
    viewer = new DC.Viewer('viewer-container')
    defaultSkyBox = viewer.scene.skyBox

    let baseLayer = DC.ImageryLayerFactory.createImageryLayer(DC.ImageryType.AMAP,
      {
        style:'img',
        crs:'WGS84'
      }
    )
    viewer.addBaseLayer(baseLayer)

    initSkyBox()


    viewer.on(DC.SceneEventType.POST_RENDER,()=>{
      if(viewer.cameraPosition.alt < distance){
        viewer.setOptions({
          showAtmosphere:false,
          skyBox:skyBoxes[selectedType]
        })
      }else {
        viewer.setOptions({
          showAtmosphere:true,
          skyBox:defaultSkyBox
        })
      }
    })
  }

    DC.ready({
    baseUrl:'../libs/dc-sdk/resources/'
  }).then(initViewer)
</script>
</body>
</html>