var material1 = new __WEBPACK_IMPORTED_MODULE_0_three__["MeshLambertMaterial"]({
 emissive: new __WEBPACK_IMPORTED_MODULE_0_three__["Color"](style.fillStyle[0], style.fillStyle[1], style.fillStyle[2]),
 side: __WEBPACK_IMPORTED_MODULE_0_three__["DoubleSide"],
 shading: __WEBPACK_IMPORTED_MODULE_0_three__["FlatShading"],
 vertexColors: __WEBPACK_IMPORTED_MODULE_0_three__["VertexColors"]
 });

 var material2 = new __WEBPACK_IMPORTED_MODULE_0_three__["MeshLambertMaterial"]({
 color: new __WEBPACK_IMPORTED_MODULE_0_three__["Color"](style.fillStyle[0] * 0.1, style.fillStyle[1] * 0.1, style.fillStyle[2] * 0.1),
 emissive: new __WEBPACK_IMPORTED_MODULE_0_three__["Color"](style.fillStyle[0] * 0.9, style.fillStyle[1] * 0.9, style.fillStyle[2] * 0.9),
 side: __WEBPACK_IMPORTED_MODULE_0_three__["DoubleSide"],
 shading: __WEBPACK_IMPORTED_MODULE_0_three__["FlatShading"],
 vertexColors: __WEBPACK_IMPORTED_MODULE_0_three__["VertexColors"]
 });

function fromSreenToNdc(x, y, container) {
 return {
 x: x / container.offsetWidth * 2 - 1,
 y: -y / container.offsetHeight * 2 + 1,
 z: 1
 };
}
function fromNdcToScreen(x, y, container) {
 return {
 x: (x + 1) / 2 * container.offsetWidth,
 y: (1 - y) / 2 * container.offsetHeight
 };
}

unproject: function () {

 var matrix = new Matrix4();

 return function unproject( camera ) {

 matrix.multiplyMatrices( camera.matrixWorld, matrix.getInverse( camera.projectionMatrix ) );
 return this.applyMatrix4( matrix );

 };

 }(),

mouse.x = ndcPos.x;
 mouse.y = ndcPos.y;

 this.raycaster.setFromCamera(mouse, camera);

 var intersects = this.raycaster.intersectObjects(this._getIntersectMeshes(floor, zoom), true);

this.unprojectPan = function(deltaVector, moveDown) {
 // var getProjectLength()
 var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

 var cxv = new Vector3(0, 0, 0).setFromMatrixColumn(scope.object.matrix, 0);// 相機(jī)x軸
 var cyv = new Vector3(0, 0, 0).setFromMatrixColumn(scope.object.matrix, 1);// 相機(jī)y軸
 // 相機(jī)軸都是單位向量
 var pxl = deltaVector.dot(cxv)/* / cxv.length()*/; // 向量在相機(jī)x軸的投影
 var pyl = deltaVector.dot(cyv)/* / cyv.length()*/; // 向量在相機(jī)y軸的投影

 // offset=dx * vector(cx) + dy * vector(cy.project(xoz).normalize)
 // offset由相機(jī)x軸方向向量+相機(jī)y軸向量在xoz平面的投影組成
 var dv = deltaVector.clone();
 dv.sub(cxv.multiplyScalar(pxl));
 pyl = dv.length();

 if ( scope.object instanceof PerspectiveCamera ) {
 // perspective

 var position = scope.object.position;
 var offset = new Vector3(0, 0, 0);
 offset.copy(position).sub(scope.target);
 var distance = offset.length();
 distance *= Math.tan(scope.object.fov / 2 * Math.PI / 180);

 // var xd = 2 * distance * deltaX / element.clientHeight;
 // var yd = 2 * distance * deltaY / element.clientHeight;
 // panLeft( xd, scope.object.matrix );
 // panUp( yd, scope.object.matrix );

 var deltaX = pxl * element.clientHeight / (2 * distance);
 var deltaY = pyl * element.clientHeight / (2 * distance) * (moveDown ? -1 : 1);

 return [deltaX, deltaY];
 } else if ( scope.object instanceof OrthographicCamera ) {

 // orthographic
 // panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
 // panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
 var deltaX = pxl * element.clientWidth * scope.object.zoom / (scope.object.right - scope.object.left);
 var deltaY = pyl * element.clientHeight * scope.object.zoom / (scope.object.top - scope.object.bottom);

 return [deltaX, deltaY];
 } else {

 // camera neither orthographic nor perspective
 console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );

 }
 }

r=6378137
resolution=2*PI*r/(2^zoom*256)

resolution zoom 2048 blocksize 256 blocksize scale(dpi=160)
156543.0339 0 320600133.5 40075016.69 986097851.5
78271.51696 1 160300066.7 20037508.34 493048925.8
39135.75848 2 80150033.37 10018754.17 246524462.9
19567.87924 3 40075016.69 5009377.086 123262231.4
9783.939621 4 20037508.34 2504688.543 61631115.72
4891.96981 5 10018754.17 1252344.271 30815557.86
2445.984905 6 5009377.086 626172.1357 15407778.93
1222.992453 7 2504688.543 313086.0679 7703889.465
611.4962263 8 1252344.271 156543.0339 3851944.732
305.7481131 9 626172.1357 78271.51696 1925972.366
152.8740566 10 313086.0679 39135.75848 962986.1831
76.4370283 11 156543.0339 19567.87924 481493.0916
38.2185141 12 78271.51696 9783.939621 240746.5458
19.1092571 13 39135.75848 4891.96981 120373.2729
9.5546285 14 19567.87924 2445.984905 60186.63645
4.7773143 15 9783.939621 1222.992453 30093.31822
2.3886571 16 4891.96981 611.4962263 15046.65911
1.1943286 17 2445.984905 305.7481131 7523.329556
0.5971643 18 1222.992453 152.8740566 3761.664778
0.2985821 19 611.4962263 76.43702829 1880.832389
0.1492911 20 305.7481131 38.21851414 940.4161945
0.0746455 21
0.0373227 22

export function getPoiRect(poi, zoomLevel, wrapper) {
 let style = getStyle(poi.styleId, zoomLevel);
 if (!style) {
 console.warn("style is invalid!");
 return;
 }
 let labelStyle = getStyle(style.labelid, zoomLevel);
 if (!labelStyle) {
 console.warn("labelStyle is invalid!");
 return;
 }
 if (!poi.text) {
 return;
 }
 let charWidth = (TEXTPROP.charWidth || 11.2) * // 11.2是根據(jù)測(cè)試得到的估值
 (labelStyle.fontSize / (TEXTPROP.fontSize || 13)); // 13是得到11.2時(shí)的fontSize
 // 返回2d坐標(biāo)
 let x = 0;//poi.points[0].x;
 let y = 0;//-poi.points[0].z;
 let path = [];
 let icon = iconSet[poi.styleId];
 let iconWidh = (icon && icon.width) || 32;
 let iconHeight = (icon && icon.height) || 32;
 let multi = /\//g;
 let firstLinePos = [];
 let textAlign = null;
 let baseLine = null;
 let hOffset = (iconWidh / 2) * ICONSCALE;
 let vOffset = (iconHeight / 2) * ICONSCALE;
 switch(poi.direct) {
 case 2: { // 左
 firstLinePos.push(x - hOffset - 2);
 firstLinePos.push(y);
 textAlign = 'right';
 baseLine = 'middle';
 break;
 };
 case 3: { // 下
 firstLinePos.push(x);
 firstLinePos.push(y - vOffset - 2);
 textAlign = 'center';
 baseLine = 'top';
 break;
 };
 case 4: { // 上
 firstLinePos.push(x);
 firstLinePos.push(y + vOffset + 2);
 textAlign = 'center';
 baseLine = 'bottom';
 break;
 };
 case 1:{ // 右
 firstLinePos.push(x + hOffset + 2);
 firstLinePos.push(y);
 textAlign = 'left';
 baseLine = 'middle';
 break;
 };
 default: {
 firstLinePos.push(x);
 firstLinePos.push(y);
 textAlign = 'center';
 baseLine = 'middle';
 }
 }
 path = path.concat(firstLinePos);

 let minX = null, maxX = null;
 let minY = null, maxY = null;
 let parts = poi.text.split(multi);

 let textWidth = 0;
 if (wrapper) {
 // 漢字和數(shù)字的寬度是不同的，所以必須使用measureText來(lái)精確測(cè)量
 let textWidth2 = wrapper.context.measureText(parts[0]).width;
 let textWidth3 = wrapper.context.measureText(parts[1] || '').width;
 textWidth = Math.max(textWidth2, textWidth3);
 } else {
 textWidth = Math.max(parts[0].length, parts[1] ? parts[1].length : 0) * charWidth;
 }

 if (textAlign === 'left') {
 minX = x - hOffset;
 maxX = path[0] + textWidth; // 只用第一行文本
 } else if (textAlign === 'right') {
 minX = path[0] - textWidth;
 maxX = x + hOffset;
 } else { // center
 minX = x - Math.max(textWidth / 2, hOffset);
 maxX = x + Math.max(textWidth / 2, hOffset);
 }
 if (baseLine === 'top') {
 maxY = y + vOffset;
 minY = y - vOffset - labelStyle.fontSize * parts.length;
 } else if (baseLine === 'bottom') {
 maxY = y + vOffset + labelStyle.fontSize * parts.length;
 minY = y - vOffset;
 } else { // middle
 minY = Math.min(y - vOffset, path[1] - labelStyle.fontSize / 2);
 maxY = Math.max(y + vOffset, path[1] + labelStyle.fontSize * (parts.length + 0.5 - 1));
 }

 return {
 min: {
 x: minX,
 y: minY
 },
 max: {
 x: maxX,
 y: maxY
 }
 };
}