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cesium-d3kit.js
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cesium-d3kit.js
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; if (typeof Cesium !== 'undefined')
/**
* 重构工具包 剥离功能模块 解耦合以及模块权限 可以自动安装不同模块使用
* @author zhangti
* @param viewer {object} 三维对象
* @param options {object} 初始化容器参数
* @constructor
*/
Cesium.D3Kit = (function () {
// 版本
var version = '1.5'
// 作者
var author = 'zhangti'
// 地址
var github = 'https://github.com/zhangti0708/cesium-examples'
// 示例地址
var examplesAddr = 'http://zhangticcc.gitee.io/webgis'
// cesium版本
var CesiumVersion = Cesium.VERSION || ''
/**
* 全局参数
*/
var CONST_PARAM = {
LoadFunctionAttribute: '', // 加载方式
BasePath: '' // 路径
}
/**
* @description 基础模块,封装常用的配置，转换，场景加载等方法。 目前该对象对外隐藏，所有属性及方法追加到d3kit上
* @constructor
* @param viewer {object} 三维对象
*
* @returns {[*,*]}
*/
var Base = function (viewer) {
if (viewer) {
this._installBaiduImageryProvider()
this._installGooGleImageryProvider()
this._installAmapImageryProvider()
this._installTencentImageryProvider()
this._installTdtImageryProvider()
}
}
Base.prototype = {
/**
* 天空盒 1
*
* @returns {string|*} SkyBox 星空盒子1
*/
setOneSkyBox: function () {
return new Cesium.SkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/00h+00.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/12h+00.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/06h+00.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/18h+00.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/06h+90.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/06h-90.jpg'
}
})
},
/**
* 天空盒 1
*
* @return {Object} SkyBox 星空盒子2
*/
setTwoSkyBox: function () {
return new Cesium.SkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_px.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_mx.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_py.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_my.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_pz.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/Version2_dark_mz.jpg'
}
})
},
/**
* 天空盒 1
*
* @return {Object} SkyBox 星空盒子3
*/
setThreeSkyBox: function () {
return new Cesium.SkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_pxs.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_mxs.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_pys.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_mys.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_pzs.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/tycho2t3_80_mzs.jpg'
}
})
},
/**
* 天空盒 1
* @param {Number} 1-5
* @return {Object} SkyBox 星空盒子 多选
*/
setSelectSkyBox: function (page) {
page = page || 1
return new Cesium.SkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_px.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_mx.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_py.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_my.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_pz.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/' + page + '/tycho2t3_80_mz.jpg'
}
})
},
/**
* 近景天空盒 1
*
* @return {Object} GroundSkyBox 近景天空盒1
*/
setOneGroundSkyBox: function () {
return new Cesium.GroundSkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/rightav9.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/leftav9.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/frontav9.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/backav9.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/topav9.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/bottomav9.jpg'
}
});
},
/**
* 近景天空盒 2
*
* @return {Object} GroundSkyBox 近景天空盒2
*/
setTwoGroundSkyBox: function () {
return new Cesium.GroundSkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetRight.png',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetLeft.png',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetFront.png',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetBack.png',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetUp.png',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/SunSetDown.png'
}
});
},
/**
* 近景天空盒 3
*
* @return {Object} GroundSkyBox 近景天空盒3
*/
setThreeGroundSkyBox: function () {
return new Cesium.GroundSkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/Right.jpg',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/Left.jpg',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/Front.jpg',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/Back.jpg',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/Up.jpg',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/Down.jpg'
}
});
},
/**
* 近景天空盒 4
*
* @return {Object} GroundSkyBox 近景天空盒4
*/
setFourGroundSkyBox: function () {
return new Cesium.GroundSkyBox({
sources: {
positiveX: CONST_PARAM.BasePath + 'datas/images/SkyBox/px.png',
negativeX: CONST_PARAM.BasePath + 'datas/images/SkyBox/nx.png',
positiveY: CONST_PARAM.BasePath + 'datas/images/SkyBox/py.png',
negativeY: CONST_PARAM.BasePath + 'datas/images/SkyBox/ny.png',
positiveZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/pz.png',
negativeZ: CONST_PARAM.BasePath + 'datas/images/SkyBox/nz.png'
}
});
},
/**
* 叠加黑夜特效
*
* @param {Object} options.offset 偏移量
*
* @return {Object} postProcessStages 后期处理
*/
setDarkEffect: function (options) {
options = options || {}
var fs =
'uniform sampler2D colorTexture;\n' +
'varying vec2 v_textureCoordinates;\n' +
'uniform float scale;\n' +
'uniform vec3 offset;\n' +
'void main() {\n' +
' // vec4 color = texture2D(colorTexture, v_textureCoordinates);\n' +
' vec4 color = texture2D(colorTexture, v_textureCoordinates);\n' +
' // float gray = 0.2989*color.r+0.5870*color.g+0.1140*color.b;\n' +
' // gl_FragColor = vec4(gray,gray,2.0*(gray+1.0), 1.0);\n' +
' gl_FragColor = vec4(color.r*0.2,color.g * 0.4,color.b*0.6, 1.0);\n' +
'}\n';
return this._viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({
name: 'darkEffect',
fragmentShader: fs,
uniforms: {
scale: 1.0,
offset: function () {
return options.offset || new Cesium.Cartesian3(0.1, 0.2, 0.3);
}
}
}));
},
/**
* 叠加场景蓝光
*
* @param {Object} options.width 宽
* @param {Object} options.height 高
*
* @return {Object} postProcessStages 后期处理
*/
setBlurBloom: function (options) {
if (this._viewer && options) {
var fs = 'uniform float height;\n' +
'uniform float width;\n' +
'uniform sampler2D colorTexture1;\n' +
'\n' +
'varying vec2 v_textureCoordinates;\n' +
'\n' +
'const int SAMPLES = 9;\n' +
'void main()\n' +
'{\n' +
'vec2 st = v_textureCoordinates;\n' +
'float wr = float(1.0 / width);\n' +
'float hr = float(1.0 / height);\n' +
'vec4 result = vec4(0.0);\n' +
'int count = 0;\n' +
'for(int i = -SAMPLES; i <= SAMPLES; ++i){\n' +
'for(int j = -SAMPLES; j <= SAMPLES; ++j){\n' +
'vec2 offset = vec2(float(i) * wr, float(j) * hr);\n' +
'result += texture2D(colorTexture1, st + offset);\n' +
'}\n' +
'}\n' +
'result = result / float(count);\n' +
'gl_FragColor = result;\n' +
'}\n';
return this._viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({
name: 'blur_x_direction',
fragmentShader: fs,
uniforms: {
width: options.width,
height: options.height,
colorTexture1: "Bright"
}
}));
}
},
/**
* 叠加雨天特效
*
* @return {Object} postProcessStages 后期处理
*/
setRainEffect: function () {
if (this._viewer) {
var fs = "uniform sampler2D colorTexture;\n\
varying vec2 v_textureCoordinates;\n\
\n\
float hash(float x){\n\
return fract(sin(x*23.3)*13.13);\n\
}\n\
\n\
void main(){\n\
float time = czm_frameNumber / 60.0;\n\
vec2 resolution = czm_viewport.zw;\n\
vec2 uv=(gl_FragCoord.xy*2.-resolution.xy)/min(resolution.x,resolution.y);\n\
vec3 c=vec3(.6,.7,.8);\n\
float a=-.4;\n\
float si=sin(a),co=cos(a);\n\
uv*=mat2(co,-si,si,co);\n\
uv*=length(uv+vec2(0,4.9))*.3+1.;\n\
float v=1.-sin(hash(floor(uv.x*100.))*2.);\n\
float b=clamp(abs(sin(20.*time*v+uv.y*(5./(2.+v))))-.95,0.,1.)*20.;\n\
c*=v*b;\n\
gl_FragColor = mix(texture2D(colorTexture, v_textureCoordinates), vec4(c, 1), 0.2);\n\
}\n\
";
return this._viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({
name: 'rainEffect',
fragmentShader: fs
}));
}
},
/**
* 叠加雨天特效
*
* @return {Object} postProcessStages 后期处理
*/
setSnowEffect: function () {
if (this._viewer) {
var fs = "uniform sampler2D colorTexture;\n\
varying vec2 v_textureCoordinates;\n\
\n\
float snow(vec2 uv,float scale){\n\
float time = czm_frameNumber / 60.0;\n\
float w=smoothstep(1.,0.,-uv.y*(scale/10.));\n\
if(w<.1)return 0.;\n\
uv+=time/scale;\n\
uv.y+=time*2./scale;\n\
uv.x+=sin(uv.y+time*.5)/scale;\n\
uv*=scale;\n\
vec2 s=floor(uv),f=fract(uv),p;\n\
float k=3.,d;\n\
p=.5+.35*sin(11.*fract(sin((s+p+scale)*mat2(7,3,6,5))*5.))-f;\n\
d=length(p);\n\
k=min(d,k);\n\
k=smoothstep(0.,k,sin(f.x+f.y)*0.01);\n\
return k*w;\n\
}\n\
\n\
void main(){\n\
vec2 resolution = czm_viewport.zw;\n\
vec2 uv=(gl_FragCoord.xy*2.-resolution.xy)/min(resolution.x,resolution.y);\n\
vec3 finalColor=vec3(0);\n\
float c = 0.0;\n\
c+=snow(uv,30.)*.0;\n\
c+=snow(uv,20.)*.0;\n\
c+=snow(uv,15.)*.0;\n\
c+=snow(uv,10.);\n\
c+=snow(uv,8.);\n\
c+=snow(uv,6.);\n\
c+=snow(uv,5.);\n\
finalColor=(vec3(c));\n\
gl_FragColor = mix(texture2D(colorTexture, v_textureCoordinates), vec4(finalColor,1), 0.3);\n\
\n\
}\n\
";
return this._viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({
name: 'snowEffect',
fragmentShader: fs
}));
}
},
/**
* 叠加雾天特效
*
* @return {Object} postProcessStages 后期处理
*/
setFogEffect: function () {
if (this._viewer) {
var fs =
"float getDistance(sampler2D depthTexture, vec2 texCoords) \n" +
"{ \n" +
" float depth = czm_unpackDepth(texture2D(depthTexture, texCoords)); \n" +
" if (depth == 0.0) { \n" +
" return czm_infinity; \n" +
" } \n" +
" vec4 eyeCoordinate = czm_windowToEyeCoordinates(gl_FragCoord.xy, depth); \n" +
" return -eyeCoordinate.z / eyeCoordinate.w; \n" +
"} \n" +
"float interpolateByDistance(vec4 nearFarScalar, float distance) \n" +
"{ \n" +
" float startDistance = nearFarScalar.x; \n" +
" float startValue = nearFarScalar.y; \n" +
" float endDistance = nearFarScalar.z; \n" +
" float endValue = nearFarScalar.w; \n" +
" float t = clamp((distance - startDistance) / (endDistance - startDistance), 0.0, 1.0); \n" +
" return mix(startValue, endValue, t); \n" +
"} \n" +
"vec4 alphaBlend(vec4 sourceColor, vec4 destinationColor) \n" +
"{ \n" +
" return sourceColor * vec4(sourceColor.aaa, 1.0) + destinationColor * (1.0 - sourceColor.a); \n" +
"} \n" +
"uniform sampler2D colorTexture; \n" +
"uniform sampler2D depthTexture; \n" +
"uniform vec4 fogByDistance; \n" +
"uniform vec4 fogColor; \n" +
"varying vec2 v_textureCoordinates; \n" +
"void main(void) \n" +
"{ \n" +
" float distance = getDistance(depthTexture, v_textureCoordinates); \n" +
" vec4 sceneColor = texture2D(colorTexture, v_textureCoordinates); \n" +
" float blendAmount = interpolateByDistance(fogByDistance, distance); \n" +
" vec4 finalFogColor = vec4(fogColor.rgb, fogColor.a * blendAmount); \n" +
" gl_FragColor = alphaBlend(finalFogColor, sceneColor); \n" +
"} \n";
return this._viewer.scene.postProcessStages.add(
new Cesium.PostProcessStage({
fragmentShader: fs,
uniforms: {
fogByDistance: new Cesium.Cartesian4(10, 0.0, 1000, 1.0),
fogColor: Cesium.Color.BLACK,
},
})
);
}
},
/**
* 默认场景配置
*
* @param {Object} options.scene 场景中的一些配置，一般默认不用填
* @return {null}
*/
setDefSceneConfig: function (options) {
options = options || {}
if (this._viewer && options) {
this._viewer.scene.sun.show = options.sun || false;
this._viewer.scene.moon.show = options.moon || false;
this._viewer.scene.fxaa = options.fxaa || true;
this._viewer.scene.globe.depthTestAgainstTerrain = options.depthTestAgainstTerrain || true;
this._viewer.scene.undergroundMode = options.undergroundMode || false;
this._viewer.scene.terrainProvider.isCreateSkirt = options.isCreateSkirt || false;
this._viewer.scene.skyAtmosphere.show = options.skyAtmosphere || false;
this._viewer.scene.globe.showGroundAtmosphere = options.showGroundAtmosphere || false
this._viewer.scene.globe.enableLighting = options.enableLighting || true
this._viewer.scene.fog.enabled = options.fog || false
this._viewer.cesiumWidget.creditContainer.style.display = "none";
}
},
/**
* 场景泛光
*
* @return {null}
*/
setBloomLightScene: function () {
if (this._viewer) {
this._viewer.scene.postProcessStages.bloom.enabled = true
this._viewer.scene.postProcessStages.bloom.uniforms.contrast = 119
this._viewer.scene.postProcessStages.bloom.uniforms.brightness = -0.4
this._viewer.scene.postProcessStages.bloom.uniforms.glowOnly = false
this._viewer.scene.postProcessStages.bloom.uniforms.delta = 0.9
this._viewer.scene.postProcessStages.bloom.uniforms.sigma = 3.78
this._viewer.scene.postProcessStages.bloom.uniforms.stepSize = 5
this._viewer.scene.postProcessStages.bloom.uniforms.isSelected = false
}
},
/**
* 相机定位
*
* @param {Object} options.position 三维位置坐标
* @param {Object} options.orientation 四元数
*
* @return {null}
*/
setView: function (options) {
if (this._viewer && options && options.position) {
if (options.distance) { //距离
var pos1 = new Cesium.Cartesian3(0, options.distance, opt.distance);
options.position = Cesium.Cartesian3.add(options.position, pos1, new Cesium.Cartesian3());
}
this._viewer.scene.camera.setView({
destination: options.position,
orientation: options.orientation || {
heading: Cesium.Math.toRadians(90.0),
pitch: Cesium.Math.toRadians(90.0),
roll: Cesium.Math.toRadians(0.0)
},
});
}
},
/**
* 获取两个点的方向
* @param {Object} position 起点
* @param {Object} tagPosition 目标点
*
* @return {Cartesian3} Direction 三维方向
*/
getDirection: function (tagPosition, position) {
return Cesium.Cartesian3.normalize(Cesium.Cartesian3.subtract(tagPosition, position, new Cesium.Cartesian3()), new Cesium.Cartesian3());
},
/**
* 相机飞行
*
* @param {Object} options.position 三维位置坐标
* @param {Object} options.orientation 四元数
* @param {Object} options.easingFunction 相机模式
* @param {Object} options.duration 用时
* @param {Object} options.callback 相机完成回调
* @param {Object} options.distance 距离
*
*/
flyTo: function (options) {
if (this._viewer && options && options.position) {
if (options.distance) { //距离
var pos1 = new Cesium.Cartesian3(0, options.distance, options.distance);
options.position = Cesium.Cartesian3.add(options.position, pos1, new Cesium.Cartesian3());
}
this._viewer.scene.camera.flyTo({
destination: options.position,
orientation: options.orientation || {
heading: Cesium.Math.toRadians(90.0),
pitch: Cesium.Math.toRadians(90.0),
roll: Cesium.Math.toRadians(0.0)
},
// pitchAdjustHeight: 500,
easingFunction: options.easingFunction || Cesium.EasingFunction.LINEAR_NONE,
duration: options.duration || 3,
complete: options.callback
})
}
},
/***
* 坐标转换 笛卡尔转84
*
* @param {Object} Cartesian3 三维位置坐标
*
* @return {Object} {lng,lat,alt} 地理坐标
*/
transformCartesianToWGS84: function (cartesian) {
if (this._viewer && cartesian) {
var ellipsoid = Cesium.Ellipsoid.WGS84
var cartographic = ellipsoid.cartesianToCartographic(cartesian)
return {
lng: Cesium.Math.toDegrees(cartographic.longitude),
lat: Cesium.Math.toDegrees(cartographic.latitude),
alt: cartographic.height
}
}
},
/***
*坐标数组转换 笛卡尔转84
*
* @param {Array} WSG84Arr {lng,lat,alt} 地理坐标数组
* @param {Number} alt 拔高
* @return {Array} Cartesian3 三维位置坐标数组
*/
transformWGS84ArrayToCartesianArray: function (WSG84Arr, alt) {
if (this._viewer && WSG84Arr) {
var $this = this
return WSG84Arr
? WSG84Arr.map(function (item) { return $this.transformWGS84ToCartesian(item, alt) })
: []
}
},
/***
* 坐标转换 84转笛卡尔
*
* @param {Object} {lng,lat,alt} 地理坐标
*
* @return {Object} Cartesian3 三维位置坐标
*/
transformWGS84ToCartesian: function (position, alt) {
if (this._viewer) {
return position
? Cesium.Cartesian3.fromDegrees(
position.lng || position.lon,
position.lat,
position.alt = alt || position.alt,
Cesium.Ellipsoid.WGS84
)
: Cesium.Cartesian3.ZERO
}
},
/***
* 坐标数组转换 笛卡尔转86
*
* @param {Array} cartesianArr 三维位置坐标数组
*
* @return {Array} {lng,lat,alt} 地理坐标数组
*/
transformCartesianArrayToWGS84Array: function (cartesianArr) {
if (this._viewer) {
var $this = this
return cartesianArr
? cartesianArr.map(function (item) { return $this.transformCartesianToWGS84(item) })
: []
}
},
/***
* 设置相机绕点旋转
*
* @param {Object} options.lng 相机的位置高度
* @param {Object} options.lat 相机的位置高度，
* @param {Object} options.height 相机的位置高度，
* @param {Object} options.speed 旋转速度，
* @param {Object} options.time 间隔
*
* @return {Object} interval window触发器对象
*/
setCameraEotateHeading: function (options) {
if (options) {
let viewer = this._viewer
let position = Cesium.Cartesian3.fromDegrees(options.lng, options.lat, options.height);
let pitch = Cesium.Math.toRadians(-30);
let angle = 360 / 30;
let distance = options.distance || 5000;
let initialHeading = viewer.camera.heading;
let delTime = 0
let speed = options.speed || 0.06
let time = options.time || 60
let interval = setInterval(() => {
delTime += speed
let heading = Cesium.Math.toRadians(delTime * angle) + initialHeading;
viewer.scene.camera.setView({
destination: position, // 点的坐标
orientation: {
heading: heading,
pitch: pitch,
}
});
viewer.scene.camera.moveBackward(distance);
}, time)
return interval
}
},
/**
* 84坐标转弧度坐标
* @param {Object} position wgs84
* @return {Object} Cartographic 弧度坐标
*
*/
transformWGS84ToCartographic: function (position) {
return position
? Cesium.Cartographic.fromDegrees(
position.lng || position.lon,
position.lat,
position.alt
)
: Cesium.Cartographic.ZERO
},
/**
* 拾取位置点
*
* @param {Object} px 屏幕坐标
*
* @return {Object} Cartesian3 三维坐标
*/
getCatesian3FromPX: function (px) {
if (this._viewer && px) {
// var picks = this._viewer.scene.drillPick(px); // 3dtilset
// for (var i = 0; i < picks.length; i++) {
// if (picks[i] instanceof Cesium.Cesium3DTileFeature) { //模型上拾取
// isOn3dtiles = true;
// }
// }
var picks = this._viewer.scene.pick(px)
var cartesian = null;
var isOn3dtiles = false, isOnTerrain = false;
if (picks instanceof Cesium.Cesium3DTileFeature) { //模型上拾取
isOn3dtiles = true;
}
// 3dtilset
if (isOn3dtiles) {
cartesian = this._viewer.scene.pickPosition(px);
if (cartesian) {
let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
if (cartographic.height < 0) cartographic.height = 0;
let lon = Cesium.Math.toDegrees(cartographic.longitude)
, lat = Cesium.Math.toDegrees(cartographic.latitude)
, height = cartographic.height;//模型高度
cartesian = this.transformWGS84ToCartesian({ lng: lon, lat: lat, alt: height })
}
}
// 地形
if (!picks && !this._viewer.terrainProvide instanceof Cesium.EllipsoidTerrainProvider) {
var ray = this._viewer.scene.camera.getPickRay(px);
if (!ray) return null;
cartesian = this._viewer.scene.globe.pick(ray, this._viewer.scene);
isOnTerrain = true
}
// 地球
if (!isOn3dtiles && !isOnTerrain) {
cartesian = this._viewer.scene.camera.pickEllipsoid(px, this._viewer.scene.globe.ellipsoid);
}
if (cartesian) {
let position = this.transformCartesianToWGS84(cartesian)
if (position.alt < 0) {
cartesian = this.transformWGS84ToCartesian(position, 0.1)
}
return cartesian;
}
return false;
}
},
/**
* 获取相机位置
*
* @return {Object} {lon,lat,height,position...} 相机位置实体
*
*/
getCameraPosition: function () {
if (this._viewer) {
var result = this._viewer.scene.camera.pickEllipsoid(new Cesium.Cartesian2(this._viewer.canvas.clientWidth / 2, this._viewer.canvas
.clientHeight / 2));
if (result) {
var curPosition = Cesium.Ellipsoid.WGS84.cartesianToCartographic(result),
lon = curPosition.longitude * 180 / Math.PI
, lat = curPosition.latitude * 180 / Math.PI;
var direction = this._viewer.camera._direction,
x = Cesium.Math.toDegrees(direction.x),
y = Cesium.Math.toDegrees(direction.y),
z = Cesium.Math.toDegrees(direction.z),
height = this._viewer.camera.positionCartographic.height,
heading = Cesium.Math.toDegrees(this._viewer.camera.heading),
pitch = Cesium.Math.toDegrees(this._viewer.camera.pitch),
roll = Cesium.Math.toDegrees(this._viewer.camera.roll);
var rectangle = this._viewer.camera.computeViewRectangle(),
west = rectangle.west / Math.PI * 180,
north = rectangle.north / Math.PI * 180,
east = rectangle.east / Math.PI * 180,
south = rectangle.south / Math.PI * 180,
centerx = (west + east) / 2,
cnetery = (north + south) / 2;
return {
lon: lon,
lat: lat,
height: height,
heading: heading,
pitch: pitch,
roll: roll,
position: this._viewer.camera.position,
center: { x: centerx, y: cnetery, z: Math.ceil(height) },
direction: new Cesium.Cartesian3(x, y, z)
};
}
}
},
/**
* 修改相机状态
*
* @param {Boolean} flag
*/
updateCameraState: function (flag) {
if (this._viewer) {
this._viewer.scene._screenSpaceCameraController.enableRotate = flag;
this._viewer.scene._screenSpaceCameraController.enableTranslate = flag;
this._viewer.scene._screenSpaceCameraController.enableZoom = flag;
this._viewer.scene._screenSpaceCameraController.enableTilt = flag;
this._viewer.scene._screenSpaceCameraController.enableLook = flag;
}
},
/**
* 鼠标事件注册
* @param {*} _mouseClickHandler 点击事件回调
* @param {*} _mouseMoveHandler 移动时间回调
* @param {*} _mouseDbClickHandler 双击事件回调
*/
bindHandelEvent: function (_mouseClickHandler, _mouseMoveHandler, _mouseDbClickHandler) {
if (this._viewer) {
var _handlers = new Cesium.ScreenSpaceEventHandler(this._viewer.canvas)
_handlers.setInputAction(function (movement) {
_mouseClickHandler && _mouseClickHandler(movement, _handlers)
}, Cesium.ScreenSpaceEventType.LEFT_CLICK)
_handlers.setInputAction(function (movement) {
_mouseMoveHandler && _mouseMoveHandler(movement, _handlers)
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE)
_handlers.setInputAction(function (movement) {
_mouseDbClickHandler && _mouseDbClickHandler(movement, _handlers)
}, Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK)
}
},
/**
* 获取鼠标信息
* @param {Function} callback 回调方法cartesian, handler句柄
*/
getHandelPosition: function (callback) {
if (this._viewer) {
var _handler = new Cesium.ScreenSpaceEventHandler(this._viewer.scene.canvas), $this = this;
_handler.setInputAction(function (movement) {
var cartesian = $this._viewer.scene.camera.pickEllipsoid(movement.endPosition, $this._viewer.scene.globe.ellipsoid);
if (typeof callback === 'function') {
callback($this.transformCartesianToWGS84(cartesian), _handler);
}
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
}
},
/**
* 根据坐标, 方位角计算世界矩阵
* @param {Object} position 位置
* @param {Object} hpr 方向角
*
* @return {Object} 模型矩阵
*/
getObjectMatrix4: function (position, hpr) {
if (position instanceof Cesium.Cartesian3) {
let cartesian = Cesium.Cartesian3.fromDegrees(position.lon, position.lat, position.alt || 0)
let heading = Cesium.Math.toRadians(hpr.heading || 90);
let pitch = Cesium.Math.toRadians(hpr.pitch || 90);
let roll = Cesium.Math.toRadians(hpr.hearollding || 0);
let headingPitchRoll = new Cesium.HeadingPitchRoll(heading, pitch, roll);
let m = Cesium.Transforms.headingPitchRollToFixedFrame(cartesian, headingPitchRoll, Cesium.Ellipsoid.WGS84, Cesium.Transforms.eastNorthUpToFixedFrame, new Cesium.Matrix4());
return m;
}
},
/**
* 根据矩阵求方位角
*
* @param {Object} matrix4 模型矩阵
* @return {Object} hpr 方位角
*/
getObjectQuaternion: function (matrix4) {
if (matrix4 instanceof Cesium.Matrix4) {
// 计算中心处的变换矩阵
let m1 = Cesium.Transforms.eastNorthUpToFixedFrame(Cesium.Matrix4.getTranslation(matrix4, new Cesium.Cartesian3()), Cesium.Ellipsoid.WGS84, new Cesium.Matrix4());
// 矩阵相除
let m3 = Cesium.Matrix4.multiply(Cesium.Matrix4.inverse(m1, new Cesium.Matrix4()), matrix4, new Cesium.Matrix4());
// 得到旋转矩阵
let mat3 = Cesium.Matrix4.getMatrix3(m3, new Cesium.Matrix3());
// 计算四元数
let q = Cesium.Quaternion.fromRotationMatrix(mat3);
// 计算旋转角(弧度)
let hpr = Cesium.HeadingPitchRoll.fromQuaternion(q);
// 得到角度
let heading = Cesium.Math.toDegrees(hpr.heading);
let pitch = Cesium.Math.toDegrees(hpr.pitch);
let roll = Cesium.Math.toDegrees(hpr.roll);
return {
heading: heading,
pitch: pitch,
roll: roll
}
}
},
/**
* 保存当前场景png
*/
saveSceneImages: function () {
if (this._viewer) {
function dataURLtoBlob(dataurl) {
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], { type: mime });
}
var canvas = this._viewer.scene.canvas;
var image = canvas.toDataURL("image/png").replace("image/png", "image/octet-stream");
var link = document.createElement("a");
var strDataURI = image.substr(22, image.length);
var blob = dataURLtoBlob(image);
var objurl = URL.createObjectURL(blob);
link.download = "scene.png";
link.href = objurl;
link.click();
}
},
/**
* AmapImageryProvider
*/
_installAmapImageryProvider: function () {
const IMG_URL =
'https://webst{s}.is.autonavi.com/appmaptile?style=6&x={x}&y={y}&z={z}';
const ELEC_URL =
'http://webrd{s}.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=7&x={x}&y={y}&z={z}';
function AmapImageryProvider(options) {
options['url'] = options.style === 'img' ? IMG_URL : ELEC_URL
if (!options.subdomains) {
options['subdomains'] = ['01', '02', '03', '04']
}
return new Cesium.UrlTemplateImageryProvider(options)
}
/**
* 拓展AmapImageryProvider
*/
Cesium.AmapImageryProvider = AmapImageryProvider
},
/**
* 天地图
*/
_installTdtImageryProvider: function () {
const MAP_URL =
'http://t{s}.tianditu.gov.cn/{layer}_c/wmts?service=WMTS&version=1.0.0&request=GetTile&tilematrix={TileMatrix}&layer={layer}&style={style}&tilerow={TileRow}&tilecol={TileCol}&tilematrixset={TileMatrixSet}&format=tiles&tk={key}';
function TdtImageryProvider(options) {
return new Cesium.UrlTemplateImageryProvider({
url: MAP_URL.replace(/\{layer\}/g, options.style || 'vec').replace(
/\{key\}/g,
options.key || ''
),
style: 'default',
format: 'tiles',
tileMatrixSetID: 'c',
subdomains: [...Array(6).keys()].map(item => (item + 1).toString()),
tileMatrixLabels: [...Array(18).keys()].map(item =>
(item + 1).toString()
),
tilingScheme: new Cesium.GeographicTilingScheme(),
maximumLevel: 18
})
}
/**
* 拓展天地图
*/
Cesium.TdtImageryProvider = TdtImageryProvider
},
/**
* 腾讯影像
*/
_installTencentImageryProvider: function () {
const ELEC_URL =
'https://rt{s}.map.gtimg.com/tile?z={z}&x={x}&y={reverseY}&styleid=1000&scene=0&version=347';
function TencentImageryProvider(options) {
options['url'] = ELEC_URL
if (!options.subdomains) {
options['subdomains'] = ['0', '1', '2']
}
return new Cesium.UrlTemplateImageryProvider(options)
}
/**
* 拓展腾讯影像
*/
Cesium.TencentImageryProvider = TencentImageryProvider
},
/**
* google
*/
_installGooGleImageryProvider: function () {
//标注 影像 地形三种
const ELEC_URL =
'http://mt{s}.google.cn/vt/lyrs=m@207000000&hl=zh-CN&gl=CN&src=app&x={x}&y={y}&z={z}&s=Galile';
const IMG_URL =
'http://mt{s}.google.cn/vt/lyrs=s&hl=zh-CN&x={x}&y={y}&z={z}&s=Gali';
const TER_URL =
'http://mt{s}.google.cn/vt/lyrs=t@131,r@227000000&hl=zh-CN&gl=cn&x={x}&y={y}&z={z}&s=Galile';
function GoogleImageryProvider(options) {
options['url'] =
options.style === 'img'
? IMG_URL
: options.style === 'ter'
? TER_URL
: ELEC_URL
if (!options.subdomains) {
options['subdomains'] = ['1', '2', '3', '4', '5']
}
return new Cesium.UrlTemplateImageryProvider(options)
}
/**
* 拓展谷歌影像
*/
Cesium.GoogleImageryProvider = GoogleImageryProvider
},
/**
* 百度影像拓展
*/
_installBaiduImageryProvider: function () {
let IMG_URL =
'http://shangetu{s}.map.bdimg.com/it/u=x={x};y={y};z={z};v=009;type=sate&fm=46'
let VEC_URL =
'http://online{s}.map.bdimg.com/tile/?qt=tile&x={x}&y={y}&z={z}&styles=sl&v=020'
let CUSTOM_URL =
'http://api{s}.map.bdimg.com/customimage/tile?&x={x}&y={y}&z={z}&scale=1&customid={style}'
let $this = this;
function BaiduImageryProvider(options) {
CUSTOM_URL = options.temp_url || CUSTOM_URL
this._url =
options.style === 'img'
? IMG_URL
: options.style === 'vec'
? VEC_URL
: CUSTOM_URL
this._tileWidth = 256