May 25, 2020
In this release: a bundled BIM viewer, fast HTML tree views, context menus, ambient shadows, improved interaction, metadata support for 3DXML CAD models, support for BIMServer 1.5.2, plus various fixes and tweaks requested by users.
xeokit V1.1 includes xeokit-bim-viewer, an open source 2D/3D BIM viewer built on xeokit, that runs in the browser and can load models from your file system.
xeokit V1.1 adds a TreeViewPlugin, a fast HTML tree view component that can navigate the objects in huge models. TreeViewPlugin has various hierarchy modes, scales up to large numbers of objects, and is fully customizable using CSS.
xeokit V1.1 adds Scalable Ambient Obscurance (SAO), which approximates Ambient Occlusion in realtime. It darkens creases, cavities and surfaces that are close to each other, which tend to be occluded from ambient light and appear darker.
SAO was developed with support from D-Studio.
The animated GIF below shows the effect as we repeatedly enable and disable SAO. When SAO is enabled, we can see darkening in regions such as the corners, and the crevices between stairs. This increases the amount of detail we can see when ambient light is high, or when objects have uniform colors across their surfaces. Run the example to experiment with the various SAO configurations.
xeokit V1.1 includes several improvements to xeokit's CameraControl component.
One useful CameraControl improvement is camera speed that automatically scales to the distance to the object in front. This technique allows us to move quckly across open spaces and slowly across confined spaces.
The Creating Files for Offline BIM tutorial now includes more techniques for avoiding precision loss when converting IFC files for loading into xeokit.
xeolabs continues to research the best ways to view huge IFC models on the Web. Geographically large IFC models rely on double-precision coordinates, however graphics in Web browsers only supports single precision. At xeolabs, we are developing enhancements to xeokit's XKT geometry format, used by XML3DLoaderPlugin, that will allow us to load such models into xeokit, without loss of precision.
Also, to improve the usability of xeokit's measurement tools, such as DistanceMeasurementsPlugin and AngleMeasurementsPlugin, future versions will introduce snap-to-vertex interaction, where the mouse or touch pointer will automatically snap to the nearest vertex.
Do you have a feature you'd like to see in xeokit? Hit the issue tracker: github.com/xeokit/xeokit-sdk/issues