摘要：
like the github issue: https://github.com/openlayers/ol3-cesium/issues/344#issuecomment-214098148 thanks jmgomezpoveda . i find the way to deal with i 阅读全文
摘要：
An extension of GeoJSON that encodes topology! TopoJSON https://github.com/topojson/topojson The TopoJSON Format Specification https://github.com/topo 阅读全文
摘要：
function flatten(array) { return [].concat.apply([], array); } function polygonToLineString(coordinates, properties) { return coordinates.map(function(coordinates) { ... 阅读全文