修复此demo的问题：http://lbsyun.baidu.com/index.php?title=jspopularGL/guide/trackAnimation

百度地图 WEBGL jsapi 轨迹动画 几内亚湾

替换该项目中的TrackAnimation.min.js文件即可

当轨迹坐标点定位不准、点漂移等原因导致轨迹无法正常展示，最明显的现象就是坐标定位到(0,0)，几内亚湾

官方demo地址：http://lbsyun.baidu.com/jsdemo.htm#webgl6_1

当坐标点不准时，比如:

[ { "lng":119.25881831563, "lat":35.314176621282 }, { "lng":119.25887102983, "lat":35.314183842875 }, { "lng":119.25897932488, "lat":35.31419867766 }, { "lng":119.25893777, "lat":35.314192985451 }, { "lng":119.25890980813, "lat":35.314189155092 }, { "lng":119.25890503023, "lat":35.31418850058 }, { "lng":119.25890999669, "lat":35.314189180922 }, { "lng":119.25891274845, "lat":35.314189557876 }, { "lng":119.2588964312, "lat":35.314187322616 }, { "lng":119.25889157615, "lat":35.314186657527 }, { "lng":119.25890217239, "lat":35.314188109092 }, { "lng":119.25890982524, "lat":35.314189157434 }, { "lng":119.2589139425, "lat":35.314189721444 }, { "lng":119.25887476876, "lat":35.314184355078 }, { "lng":119.25890047359, "lat":35.314187876376 }, { "lng":119.25894169659, "lat":35.314193523326 }, { "lng":119.25896284471, "lat":35.314196420225 }, { "lng":119.25894177782, "lat":35.314193534454 }, { "lng":119.25892917039, "lat":35.314191807443 }, { "lng":119.25902073091, "lat":35.314204349252 }, { "lng":119.25888896586, "lat":35.314186299945 }, { "lng":119.25896609802, "lat":35.314196865862 }, { "lng":119.25883718638, "lat":35.314179206524 }, { "lng":119.2588765371, "lat":35.314184597324 }, { "lng":119.2631996379, "lat":35.314774913689 }, { "lng":119.2639552859, "lat":35.311876051673 }, { "lng":119.26798233232, "lat":35.29841751598 }, { "lng":119.26795776552, "lat":35.286993148287 }, { "lng":119.26708419553, "lat":35.283356381164 }, { "lng":119.27155902211, "lat":35.269739651301 }, { "lng":119.27393337201, "lat":35.251653771169 }, { "lng":119.27619656155, "lat":35.23505243829 }, { "lng":119.27632486109, "lat":35.230163984119 }, { "lng":119.28047275098, "lat":35.219913565289 }, { "lng":119.28564436166, "lat":35.213580065234 }, { "lng":119.29055344385, "lat":35.201231961931 }, { "lng":119.29362700269, "lat":35.195125337211 }, { "lng":119.29743297297, "lat":35.184209636288 }, { "lng":119.2955843901, "lat":35.174497751846 }, { "lng":119.2961370131, "lat":35.164407850412 }, { "lng":119.29746408328, "lat":35.152499735471 }, { "lng":119.29794740923, "lat":35.143371113923 }, { "lng":119.30073475134, "lat":35.142575437356 }, { "lng":119.30676006444, "lat":35.139902026067 }, { "lng":119.30415573814, "lat":35.135099676495 }, { "lng":119.30296276616, "lat":35.129497430032 }, { "lng":119.30851539747, "lat":35.127207246904 }, { "lng":119.31909002548, "lat":35.125202793808 }, { "lng":119.31859389896, "lat":35.126038837693 }, { "lng":119.31862113689, "lat":35.125859361261 }, { "lng":119.31877902566, "lat":35.125800446762 }, { "lng":119.31874103623, "lat":35.125379218441 }, { "lng":119.31151518443, "lat":35.126585603546 }, { "lng":119.30946930493, "lat":35.127046820986 }, { "lng":119.29927820016, "lat":35.131114101016 }, { "lng":119.29826152459, "lat":35.131395240081 }, { "lng":119.29133305823, "lat":35.134363263517 }, { "lng":119.29114649669, "lat":35.133865123503 }, { "lng":119.29114085231, "lat":35.13385818571 }, { "lng":119.29114010597, "lat":35.133857268344 }, { "lng":119.29115787271, "lat":35.133879106216 }, { "lng":119.29057703889, "lat":35.134677609776 }, { "lng":119.29775576911, "lat":35.139352812362 }, { "lng":119.30092949125, "lat":35.142590947244 }, { "lng":119.29761855763, "lat":35.152506148037 }, { "lng":119.2962884646, "lat":35.164448473365 }, { "lng":119.29577752597, "lat":35.175206264213 }, { "lng":119.29753848496, "lat":35.182902310064 }, { "lng":119.29762242295, "lat":35.184000655735 }, { "lng":119.29594496511, "lat":35.188681533244 }, { "lng":119.29382340909, "lat":35.195158967872 }, { "lng":119.28763595151, "lat":35.208658634096 }, { "lng":119.28606058137, "lat":35.213215376715 }, { "lng":119.27689643591, "lat":35.228035860166 }, { "lng":119.27623181691, "lat":35.235771591746 }, { "lng":119.27284880535, "lat":35.265556402045 }, { "lng":119.26829881565, "lat":35.279515333317 }, { "lng":119.26693237689, "lat":35.282812799728 }, { "lng":119.26800020049, "lat":35.291666100102 }, { "lng":119.27303480826, "lat":35.292036092549 }, { "lng":119.27278178728, "lat":35.294227583855 }, { "lng":119.2719090037, "lat":35.294165034047 }, { "lng":119.27191557511, "lat":35.294165515095 }, { "lng":119.2719850294, "lat":35.294170597431 }, { "lng":119.26863853296, "lat":35.294024486983 }, { "lng":119.26799145753, "lat":35.294009584839 }, { "lng":119.26545803482, "lat":35.294632252058 }, { "lng":119.2659933279, "lat":35.294645631786 }, { "lng":119.26504722259, "lat":35.294621895406 }, { "lng":119.26464823918, "lat":35.302086764625 }, { "lng":119.26287944614, "lat":35.307506714039 }, { "lng":119.26265177467, "lat":35.307797691724 }, { "lng":119.26334885906, "lat":35.314792548248 }, { "lng":119.25902003478, "lat":35.314204253901 }, { "lng":119.25906268378, "lat":35.314210095511 }, { "lng":119.2589224113, "lat":35.31419088155 }, { "lng":119.2589311087, "lat":35.314192072962 }, { "lng":119.25892446312, "lat":35.314191162618 }, { "lng":119.25892928527, "lat":35.31419182318 }, { "lng":119.25893585598, "lat":35.314192723262 }, { "lng":119.25888035408, "lat":35.314185120217 }, { "lng":119.25883442411, "lat":35.314178828103 }, { "lng":119.26223571972, "lat":35.314643718102 }, { "lng":119.2634988683, "lat":35.313003129775 }, { "lng":119.26251352673, "lat":35.307843225394 }, { "lng":119.26483783486, "lat":35.300067602689 }, { "lng":119.26783263257, "lat":35.298944888828 }, { "lng":119.26799431192, "lat":35.296084151507 }, { "lng":119.26877358011, "lat":35.296121463878 }]

就会出现偏移到(0,0)的问题