Yuance Information Technology has released Mapmost SDK for WebGL v9.15.0, which adds SOG loading to the addLayer(type:3DGS) model interface.
Mapmost added gaussian splatting loading in v9.4.0 on 28 February 2025, with map.addLayer(type:3DGS) taking either a single model file or a 3DGS service carrying LOD. The same v9.15.0 release, also fixed inaccurate 3D picking on 3DGS data when the map is not running fullscreen, and a memory leak triggered by adding and removing 3D models repeatedly.
The interface has been extended in almost every release since. v9.5.0 in May 2025 returned 3DGS coordinates through the click event's e.coord, extended new Measure3D(map) to distance and area measurement on 3DGS, and added a frustum culling parameter. v9.8.0-beta that July raised picking and measurement precision to below one meter. v9.11.0-beta added the isMerge parameter in October 2025 for streaming tile rendering.
v9.13.0-beta split the loader in two in February 2026, addLayer(type:3DGS) for model files and addLayer(type:MMGS) for services, the service path targeting the standard introduced in Mapmost Studio v9.6.0-beta and dropping the older one. That release also added depthThreshold, which dynamically culls non critical gaussians inside the view frustum at render time, and layer.flyToSelf(), which takes a bearing in degrees clockwise from north, a pitch, and a duration defaulting to 1000 milliseconds. v9.14.0-beta in March 2026 added brightness, contrast, saturation, opacity and depth write parameters to both 3DGS and MMGS, settable at initialization and updatable at runtime.
What the changelog does not state is whether SOG loading covers the SOG v2 bundle or the earlier directory layout, and the v9.15.0 3DGSLayer API reference documents only flyToSelf. The sample code in Mapmost's public sample repository still registers the layer with a url pointing at a .splat file. Yuance Information Technology is based in Suzhou and publishes the SDK changelog in Chinese.
v9.16.0 is the most recent release and carries no 3DGS items. Licensing is commercial, a userId authorization is required at map initialization, and an offline deployment package is offered.
Mapmost licenses the SDK on application. Learn more here.
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