Recently in dynamic flow, but, according to texture don't know why don't write any great god help see

//dynamic line material 

The function PolylineTrailLinkMaterialProperty (color, duration) {
Enclosing _definitionChanged=new Cesium, Event (); 
Enclosing _color=undefined; 
Enclosing _colorSubscription=undefined; 
this.color=color; 
This. Duration=duration; 
Enclosing _time=(new Date ()). The getTime (); 
} 

Object. DefineProperties (PolylineTrailLinkMaterialProperty prototype, {
IsConstant: {
Get: the function () {
return false; 
} 
}, 
DefinitionChanged: {
Get: the function () {
Return this. _definitionChanged; 
} 
}, 
Color: Cesium createPropertyDescriptor (' color ') 
}); 

PolylineTrailLinkMaterialProperty. Prototype. GetType=function (time) {
Return 'PolylineTrailLink'; 
} 

PolylineTrailLinkMaterialProperty. Prototype. GetValue=https://bbs.csdn.net/topics/function (time, result) {
if (! Cesium. Defined (result)) {
Result={}; 
} 
Result. Color=Cesium. Property. GetValueOrClonedDefault (enclosing _color, time, Cesium, color, WHITE, and the result. The color). 
Result. The image=Cesium. Material. PolylineTrailLinkImage; 
Result. Time=(((new Date ()). The getTime () - this. _time) % this. The duration)/this. Duration; 
return result; 
} 

PolylineTrailLinkMaterialProperty. Prototype. Equals=function (other) {
Return this===other | | 
(other instanceof PolylineTrailLinkMaterialProperty & amp; & 
Cesium. Property. The equals (enclosing _color, other. _color)) 

} 

Cesium. PolylineTrailLinkMaterialProperty=PolylineTrailLinkMaterialProperty; 
Cesium. Material. PolylineTrailLinkType='PolylineTrailLink'; 
Cesium. Material. PolylineTrailLinkImage="../../static/images/effects/LinkPulse. PNG "; 
Cesium. Material. PolylineTrailLinkSource=
"Czm_material czm_getMaterial (czm_materialInput materialInput) \ n \ 
{czm_material material=czm_getDefaultMaterial (materialInput); Vec2 st=materialInput. St; \ n \ 
Vec4 colorImage=texture2D (image, vec2 (fract (st. s - time), st. t)); \ n \ 
Material. The alpha=colorImage. A * color. A; \ n \ 
Material. Diffuse=(colorImage. RGB + color. RGB)/2.0; \ n \ 
The 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: 20 
}, 
Source: Cesium. Material. PolylineTrailLinkSource 
}, 
Translucent: function (material) {
return true; 
} 
}); 

 let line=earth. CZM. Viewer. Entities. Add ({
Name: 'PolylineTrail' 
Polyline: {
Positions: Cesium. Cartesian3. FromDegreesArrayHeights ([113.9251090, 27.6920705, 113.9276940, 27.6878466, 300, 300]), 
Width: 8, 
Material: new Cesium. PolylineTrailLinkMaterialProperty (Cesium. Color. AQUA, 10000), 
ClampToGround: true 
} 
});