mirror of
https://github.com/jiawanlong/Cesium-Examples.git
synced 2025-07-04 23:27:30 +00:00
78 lines
2.7 KiB
HTML
78 lines
2.7 KiB
HTML
|
<!--********************************************************************
|
|||
|
|
* by jiawanlong
|
|||
|
|
*********************************************************************-->
|
|||
|
|
<!DOCTYPE html>
|
|||
|
|
<html>
|
|||
|
|
|
|||
|
|
<head>
|
|||
|
|
<meta charset="UTF-8" />
|
|||
|
|
<link rel="stylesheet" href="./../../libs/cesium/Cesium1.98/Widgets/widgets.css" />
|
|||
|
|
<script type="text/javascript" src="./../../libs/cesium/Cesium1.98/Cesium.js"></script>
|
|||
|
|
</head>
|
|||
|
|
|
|||
|
|
<body style="
|
|||
|
|
margin: 0;
|
|||
|
|
overflow: hidden;
|
|||
|
|
background: #fff;
|
|||
|
|
width: 100%;
|
|||
|
|
height: 100%;
|
|||
|
|
position: absolute; top: 0;
|
|||
|
|
">
|
|||
|
|
<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
|
|||
|
|
|
|||
|
|
<script type="text/javascript">
|
|||
|
|
Cesium.Ion.defaultAccessToken =
|
|||
|
|
"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3ZjQ5ZGUzNC1jNWYwLTQ1ZTMtYmNjYS05YTY4ZTVmN2I2MDkiLCJpZCI6MTE3MTM4LCJpYXQiOjE2NzY0NDUyODB9.ZaNSBIfc1sGLhQd_xqhiSsc0yr8oS0wt1hAo9gbke6M";
|
|||
|
|
const viewer = new Cesium.Viewer("map", {});
|
|||
|
|
viewer.scene.debugShowFramesPerSecond = true;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
1. 顶点着色器（Vertex Shader）坐标变换、传递数据给片段着色器、动态变形
|
|||
|
|
2. 片段着色器（Fragment Shader）计算颜色、应用光照、后处理效果
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
const customShader = new Cesium.CustomShader({
|
|||
|
|
vertexShaderText: `
|
|||
|
|
void vertexMain(VertexInput vsInput, inout czm_modelVertexOutput vsOutput) {
|
|||
|
|
// vec3 position = vsInput.attributes.positionMC;
|
|||
|
|
// position.y = position.y + 10.5;
|
|||
|
|
// vsOutput.positionMC = position;
|
|||
|
|
}
|
|||
|
|
`,
|
|||
|
|
fragmentShaderText: `
|
|||
|
|
void fragmentMain(FragmentInput fsInput, inout czm_modelMaterial material) {
|
|||
|
|
float height = fsInput.attributes.positionMC.y;
|
|||
|
|
|
|||
|
|
vec3 lowColor = vec3(0.0, 0.0, 1.0); // 蓝色
|
|||
|
|
vec3 highColor = vec3(1.0, 0.0, 0.0); // 红色
|
|||
|
|
|
|||
|
|
// material.diffuse = mix(lowColor, highColor, smoothstep(0.0, 200.0, height));
|
|||
|
|
|
|||
|
|
if(height > 30.0){
|
|||
|
|
material.diffuse = lowColor;
|
|||
|
|
}else{
|
|||
|
|
material.diffuse = highColor;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
`,
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
const tileset = new Cesium.Cesium3DTileset({
|
|||
|
|
url: "./data/tileset.json",
|
|||
|
|
customShader: customShader
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
tileset.readyPromise
|
|||
|
|
.then(function (tileset) {
|
|||
|
|
viewer.scene.primitives.add(tileset);
|
|||
|
|
viewer.zoomTo(tileset)
|
|||
|
|
})
|
|||
|
|
.catch(function (error) {
|
|||
|
|
console.log(error);
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
</script>
|
|||
|
|
</body>
|
|||
|
|
|
|||
|
|
</html>
|