89 lines
2.6 KiB
JavaScript
89 lines
2.6 KiB
JavaScript
|
/*
|
||
|
|
流动纹理线
|
||
|
|
color 颜色
|
||
|
|
duration 持续时间 毫秒
|
||
|
|
*/
|
||
|
|
function EllipsoidFadeMaterialProperty(color, duration) {
|
||
|
|
this._definitionChanged = new Cesium.Event();
|
||
|
|
this._color = undefined;
|
||
|
|
this._colorSubscription = undefined;
|
||
|
|
this.color = color;
|
||
|
|
this.duration = duration;
|
||
|
|
this._time = new Date().getTime();
|
||
|
|
}
|
||
|
|
|
||
|
|
Object.defineProperties(EllipsoidFadeMaterialProperty.prototype, {
|
||
|
|
isConstant: {
|
||
|
|
get: function () {
|
||
|
|
return false;
|
||
|
|
},
|
||
|
|
},
|
||
|
|
definitionChanged: {
|
||
|
|
get: function () {
|
||
|
|
return this._definitionChanged;
|
||
|
|
},
|
||
|
|
},
|
||
|
|
color: Cesium.createPropertyDescriptor("color"),
|
||
|
|
});
|
||
|
|
EllipsoidFadeMaterialProperty.prototype.getType = function (time) {
|
||
|
|
return "EllipsoidFade";
|
||
|
|
};
|
||
|
|
EllipsoidFadeMaterialProperty.prototype.getValue = function (time, result) {
|
||
|
|
if (!Cesium.defined(result)) {
|
||
|
|
result = {};
|
||
|
|
}
|
||
|
|
result.color = Cesium.Property.getValueOrClonedDefault(
|
||
|
|
this._color,
|
||
|
|
time,
|
||
|
|
Cesium.Color.WHITE,
|
||
|
|
result.color
|
||
|
|
);
|
||
|
|
|
||
|
|
result.time = ((new Date().getTime() - this._time) % this.duration) / this.duration;
|
||
|
|
return result;
|
||
|
|
|
||
|
|
// return Cesium.defined(result) || (result = {}),
|
||
|
|
// result.color = Cesium.Property.getValueOrClonedDefault(this._color, time, Cesium.Color.WHITE, result.color),
|
||
|
|
// void 0 === this._time && (this._time = time.secondsOfDay),
|
||
|
|
// result.time = time.secondsOfDay - this._time,
|
||
|
|
// result
|
||
|
|
};
|
||
|
|
EllipsoidFadeMaterialProperty.prototype.equals = function (other) {
|
||
|
|
return (
|
||
|
|
this === other ||
|
||
|
|
(other instanceof EllipsoidFadeMaterialProperty &&
|
||
|
|
Property.equals(this._color, other._color))
|
||
|
|
);
|
||
|
|
};
|
||
|
|
Cesium.EllipsoidFadeMaterialProperty = EllipsoidFadeMaterialProperty;
|
||
|
|
Cesium.Material.EllipsoidFadeType = "EllipsoidFade";
|
||
|
|
Cesium.Material.EllipsoidFadeSource =
|
||
|
|
"czm_material czm_getMaterial(czm_materialInput materialInput)\n" +
|
||
|
|
"{\n" +
|
||
|
|
"czm_material material = czm_getDefaultMaterial(materialInput);\n" +
|
||
|
|
"material.diffuse = 1.5 * color.rgb;\n" +
|
||
|
|
"vec2 st = materialInput.st;\n" +
|
||
|
|
"float dis = distance(st, vec2(0.5, 0.5));\n" +
|
||
|
|
"float per = fract(time);\n" +
|
||
|
|
"if(dis > per * 0.5){\n" +
|
||
|
|
"material.alpha = 0.0;\n" +
|
||
|
|
"discard;\n" +
|
||
|
|
"}else {\n" +
|
||
|
|
"material.alpha = color.a * dis / per / 1.0;\n" +
|
||
|
|
"}\n" +
|
||
|
|
"return material;\n" +
|
||
|
|
"}";
|
||
|
|
Cesium.Material._materialCache.addMaterial(Cesium.Material.EllipsoidFadeType, {
|
||
|
|
fabric: {
|
||
|
|
type: Cesium.Material.EllipsoidFadeType,
|
||
|
|
uniforms: {
|
||
|
|
color: new Cesium.Color(1.0, 0.0, 0.0, 1),
|
||
|
|
time: 0,
|
||
|
|
},
|
||
|
|
source: Cesium.Material.EllipsoidFadeSource,
|
||
|
|
},
|
||
|
|
translucent: function (material) {
|
||
|
|
return true;
|
||
|
|
},
|
||
|
|
});
|