OpenSource
/
dc-sdk
дзеркало https://github.com/dvt3d/dc-sdk


			
				
					
						
						
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							<!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>
    <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>
    <script>
      DC.config.baseUrl = '../libs/dc-sdk/resources/'
      let viewer = new DC.Viewer('viewer-container')
      let baseLayer = DC.ImageryLayerFactory.createImageryLayer(
        DC.ImageryType.AMAP,
        {
          style: 'img',
          crs: 'WGS84',
        }
      )
      viewer.addBaseLayer(baseLayer, {
        brightness: 0.1,
      })
      let layer = new DC.TilesetLayer('layer')
      viewer.addLayer(layer)
      let tileset = new DC.Tileset(
        '//resource.dvgis.cn/data/3dtiles/ljz/tileset.json'
      )
      let style = new DC.TilesetStyle()
      style.color = {
        conditions: [
          ['${Height} >= 300', 'rgba(45, 0, 75, 0.5)'],
          ['${Height} >= 200', 'rgb(102, 71, 151)'],
          ['${Height} >= 100', 'rgb(170, 162, 204)'],
          ['${Height} >= 50', 'rgb(224, 226, 238)'],
          ['${Height} >= 25', 'rgb(252, 230, 200)'],
          ['${Height} >= 10', 'rgb(248, 176, 87)'],
          ['${Height} >= 5', 'rgb(198, 106, 11)'],
          ['true', 'rgb(127, 59, 8)'],
        ],
      }
      tileset.setStyle(style)

      let customShader = new DC.CustomShader({
        fragmentShaderText: `
      void fragmentMain(FragmentInput fsInput, inout czm_modelMaterial material) {
         vec4 position = czm_inverseModelView * vec4(fsInput.attributes.positionEC,1); // 位置
         float glowRange = 100.0; // 光环的移动范围(高度)
         vec4 temp = vec4(material.diffuse,material.alpha); // 颜色
         temp *= vec4(vec3(position.z / 10.0), 1.0);  // 渐变
         // 动态光环
         float time = fract(czm_frameNumber / 360.0);
         time = abs(time - 0.5) * 2.0;
         float diff = step(0.005, abs( clamp(position.z / glowRange, 0.0, 1.0) - time));
         material.diffuse = vec3(temp.rgb + temp.rgb * (1.0 - diff)) ;
       }
      `,
      })
      tileset.setCustomShader(customShader)
      layer.addOverlay(tileset)
      viewer.flyTo(tileset)
    </script>
  </body>
</html>