WEB GIS 开发框架 mapbox-gl-js v0.49 已发布，Mapbox GL JS 是一个 JavaScript 库，使用 WebGL 渲染交互式矢量瓦片地图和栅格瓦片地图。WebGL 渲染意味着高性能，MapboxGL 能够渲染大量的地图要素，拥有流畅的交互以及动画效果、可以显示立体地图并且支持移动端，是一款十分优秀的 WEB GIS（地理信息系统） 开发框架。

Breaking changes

• Use client{Height/Width} instead of offset{Height/Width} for map canvas sizing (#6848, fixed by #7128)

Bug 修复

• Fix Top Issues list for mapbox-gl-js (#7108, fixed by #7112)

• Fix bug in which symbols with icon-allow-overlap: true, text-allow-overlap: true, text-optional: false would show icons when they shouldn't (#7041)

• Fix bug where the map would not stop at the exact zoom level requested by Map#FlyTo (#7222) (#7223) (h/t benoitbzl)

• Keep map centered on the center point of a multi-touch gesture when zooming (#6722) (#7191) (h/t pakastin)

• Update the style-spec's old gl-style-migrate script to include conversion of legacy functions and filters to their expression equivalents (#6927, fixed by #7095)

• Fix icon-size for small data-driven values (#7125)

• Fix bug in the way AJAX requests load local files on iOS web view (#6610) (h/t oscarfonts)

• Fix bug in which canvas sources would not render in world wrapped tiles at the edge of the viewport ([#7271]#7271), fixed by #7273)

功能改进

• Improve time to first render by updating how feature ID maps are transferred to the main thread (#7110, fixed by #7132)

• Reduce size of JSON transmitted from worker thread to main thread (#7124)

• Improve image/glyph atlas packing algorithm (#7171)

• Use murmur hash on symbol instance keys to reduce worker transfer costs (#7127)

• Add GL state management for uniforms (#6018)

• Add symbol-z-order symbol layout property to style spec (#7219)

• Implement data-driven styling support for *-pattern properties (#6289)

• Add Map#fitScreenCoordinates which fits viewport to two points, similar to Map#fitBounds but uses screen coordinates and supports non-zero map bearings (#6894)

• Re-implement LAB/HSL color space interpolation for expressions (#5326, fixed by #7123)

• Enable benchmark testing for Mapbox styles (#7047)

• Allow Map#setFeatureState and Map#getFeatureState to accept numeric IDs (#7106) (h/t bfrengley)

更多详情可查阅发行列表