mirror of
https://github.com/jiawanlong/Cesium-Examples.git
synced 2025-11-04 09:14:17 +00:00
129 lines
5.3 KiB
HTML
129 lines
5.3 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.eyJqdGkiOiIyMjBhMzcxMC0wNjBiLTRmYjItYjY1MC0wMzAwMzMyMGUyMmEiLCJpZCI6MzAzNzc3LCJpYXQiOjE3NDc2Mzk0NTV9.E_90aKtVdzRGlU2z48VwJ4mWvl-uuDkfQBCOO6zbzn4";
|
|
const viewer = new Cesium.Viewer("map", {
|
|
contextOptions: {
|
|
// requestWebgl1: true,
|
|
},
|
|
});
|
|
viewer.scene.debugShowFramesPerSecond = true;
|
|
viewer.scene.globe.depthTestAgainstTerrain = true;
|
|
|
|
/*
|
|
----------------------------------MaterialProperty-----------------------------
|
|
*/
|
|
|
|
|
|
class PolylineTrailLinkMaterialProperty {
|
|
constructor(options) {
|
|
options = Cesium.defaultValue(options, Cesium.defaultValue.EMPTY_OBJECT);
|
|
|
|
this._definitionChanged = new Cesium.Event();
|
|
this._color = undefined;
|
|
this._colorSubscription = undefined;
|
|
this.color = options.color;
|
|
this.duration = Cesium.defaultValue(options.duration, 1000);
|
|
this._time = (new Date()).getTime();
|
|
}
|
|
}
|
|
|
|
Object.defineProperties(PolylineTrailLinkMaterialProperty.prototype, {
|
|
isConstant: {
|
|
get: function () {
|
|
return false;
|
|
}
|
|
},
|
|
definitionChanged: {
|
|
get: function () {
|
|
return this._definitionChanged;
|
|
}
|
|
},
|
|
color: Cesium.createPropertyDescriptor('color')
|
|
});
|
|
PolylineTrailLinkMaterialProperty.prototype.getType = function (time) {
|
|
return 'PolylineTrailLink';
|
|
};
|
|
PolylineTrailLinkMaterialProperty.prototype.getValue = function (time, result) {
|
|
if (!Cesium.defined(result)) {
|
|
result = {};
|
|
}
|
|
result.color = Cesium.Property.getValueOrClonedDefault(this._color, time, Cesium.Color.WHITE, result.color);
|
|
result.image = Cesium.Material.PolylineTrailLinkImage;
|
|
result.time = (((new Date()).getTime() - this._time) % this.duration) / this.duration;
|
|
return result;
|
|
};
|
|
PolylineTrailLinkMaterialProperty.prototype.equals = function (other) {
|
|
return this === other ||
|
|
(other instanceof PolylineTrailLinkMaterialProperty && Cesium.Property.equals(this._color, other._color))
|
|
};
|
|
Cesium.PolylineTrailLinkMaterialProperty = PolylineTrailLinkMaterialProperty;
|
|
Cesium.Material.PolylineTrailLinkType = 'PolylineTrailLink';
|
|
Cesium.Material.PolylineTrailLinkImage = "./line1.png";
|
|
Cesium.Material.PolylineTrailLinkSource = `czm_material czm_getMaterial(czm_materialInput materialInput)
|
|
{
|
|
czm_material material = czm_getDefaultMaterial(materialInput);
|
|
vec2 st = materialInput.st;
|
|
//time = speed * czm_frameNumber * 0.001;
|
|
vec4 colorImage = texture(image, vec2(fract(st.s - time), st.t));
|
|
material.alpha = colorImage.a * color.a;
|
|
material.diffuse = color.rgb;
|
|
return material;
|
|
}
|
|
`;
|
|
Cesium.Material._materialCache.addMaterial(Cesium.Material.PolylineTrailLinkType, {
|
|
fabric: {
|
|
type: Cesium.Material.PolylineTrailLinkType,
|
|
uniforms: {
|
|
color: new Cesium.Color(1.0, 0.0, 0.0, 0.5),
|
|
image: Cesium.Material.PolylineTrailLinkImage,
|
|
time: 0,
|
|
},
|
|
source: Cesium.Material.PolylineTrailLinkSource
|
|
},
|
|
translucent: function (material) {
|
|
return true;
|
|
}
|
|
});
|
|
|
|
viewer.entities.add({
|
|
polyline: {
|
|
positions: Cesium.Cartesian3.fromDegreesArray([
|
|
-112, 36,
|
|
-100, 38,
|
|
-90, 42
|
|
]),
|
|
width: 3,
|
|
material: new Cesium.PolylineTrailLinkMaterialProperty({
|
|
color: Cesium.Color.fromCssColorString('#7ffeff'),
|
|
duration: 3000,
|
|
}),
|
|
},
|
|
});
|
|
|
|
</script>
|
|
</body>
|
|
|
|
</html> |