import Cesium from 'cesium/Cesium'
/*流动纹理线
color 颜色
duration 持续时间 毫秒*/
functionPolylineTrailLinkMaterialProperty (color, duration) {this._definitionChanged = newCesium.Event()this._color =undefinedthis._colorSubscription =undefinedthis.color =colorthis.duration =durationthis._time = newDate().getTime()
}
Cesium.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) {//debugger
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.durationreturnresult
}
PolylineTrailLinkMaterialProperty.prototype.equals= function(other) {return(this === other ||(otherinstanceof PolylineTrailLinkMaterialProperty &&Property.equals(this._color, other._color))
)
}
Cesium.PolylineTrailLinkMaterialProperty=PolylineTrailLinkMaterialProperty
Cesium.Material.PolylineTrailLinkType= 'PolylineTrailLink'Cesium.Material.PolylineTrailLinkImage= require('../assets/layout/cable.png')
Cesium.Material.PolylineTrailLinkSource=
'czm_material czm_getMaterial(czm_materialInput materialInput)\n\
{\n\
czm_material material = czm_getDefaultMaterial(materialInput);\n\
vec2 st = materialInput.st;\n\
vec4 colorImage = texture2D(image, vec2(fract(st.s - time), st.t));\n\
material.alpha = colorImage.a * color.a;\n\
material.diffuse = (colorImage.rgb+color.rgb)/2.0;\n\
return material;\n\
}'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}
}
)
转播
