Fu Zhen

Investigate WebGPU support

2

[WebGPU is coming](http://webgpu.io), although it's still in a early stage and needs years for wide supports, for sure now is the right time to do some investigations. IMHO, with a...

**maptalks's version and what browser you use?** ---- v1.0.0-rc.10 **Issue description** ---- Perspective polygon draws incorrectly in Overview Control 鹰眼中，地图缩小到世界级且倾斜时，鹰眼中的地图范围会出现绘制错误  **Please provide a reproduction URL (on any jsfiddle like...

增加对uni-app的支持

2

**maptalks's version and what browser you use?** ---- N/A **Issue description** ---- 增加对uni-app的支持 **Please provide a reproduction URL (on any jsfiddle like site)** ----

TileLayer's number type offset cause blank map

1

**maptalks's version and what browser you use?** ---- 1.0.0-rc.6 **Issue description** ---- TileLayer's number type offset cause blank map **Please provide a reproduction URL (on any jsfiddle like site)** ----...

**maptalks's version and what browser you use?** ---- 1.0.0-rc.6 **Issue description** ---- 调用childLayer的remove方法后，GroupTileLayer没有接收到子图层的remove事件，导致了一些绘制问题。 相关pr #1718 能暂时解决被remove的childLayer的获取瓦片逻辑的错误，但上述问题依然存在 **Please provide a reproduction URL (on any jsfiddle like site)** ---- ```js const tileLayer...

VectorLayer绘制图形会超出TileLayer的远端范围

1

**maptalks's version and what browser you use?** ---- v0.49.1 **Issue description** ---- VectorLayer绘制图形会超出TileLayer的远端范围  **Please provide a reproduction URL (on any jsfiddle like site)** ----

**maptalks's version and what browser you use?** ---- v1.0.0-rc.2 **Issue description** ---- Line patttern animation is abnormally fast when zoom in to a certern zoom level. **Please provide a reproduction...

从0.50.0开始的新调整

6

## 动机 maptalks目前已经发布了3年，3年间webgis主流渲染技术从dom，canvas进化到了webgl，接下来maptalks也计划改为主要采用webgl技术渲染。 这次的新调整，是为了理顺webgl图层体系和canvas图层体系，让他们各司其职，避免产生困惑。 ## 现状  * 每个map实例拥有一个顶层canvas实例，渲染图层时会把图层的canvas绘制在这个顶层canvas上。 * 画布隔离机制：每个canvas图层都有独立的画布(canvas)实例，不相互影响。 * 优点：消除渲染逻辑的耦合 * 缺点：画布只能整体上下叠加，无法控制具体图形的叠加顺序。例如，图层A绘制2个面a1, a2，图层B绘制了2个面b1,b2： * 无法实现 a1, b1, a2, b2的叠加顺序，只能a1, a2永远叠加在b1,b2上方，或者b1, b2永远叠加在a1,a2上方 * 画布隔离机制不适用于webgl图层 * webgl图形的遮蔽顺序(前景图形会挡住后面的图形)应由三维空间关系决定，但因隔离画布上的图形只能整体上下叠加，会破坏三维空间遮蔽顺序。 * 现有的VectorLayer和ParticleLayer（图中红框里的图层）因为只能用canvas渲染，无法融入webgl绘制体系。...

fitExtent doesn't work at the second time

3

**maptalks's version and what browser you use?** ---- v1.0.0-beta.7 **Issue description** ---- fitExtent doesn't work at the second time **Please provide a reproduction URL (on any jsfiddle like site)** ----