Change assembly color in Forge Viewer

Question

How can I change color in Forge Viewer when I select assembly? Do I need select all parts under assembly and change color? I know how to change one part color. Thanks

Answer 1

You can subscribe to the SELECTION_CHANGED_EVENT and recursively (available in Viewer v6.5+) apply a theming color to the components by their dbid :

viewer.addEventListener(Autodesk.Viewing.SELECTION_CHANGED_EVENT, event=>{
    viewer.setThemingColor(event.dbIdArray[0], THREE.Vector4, null, true) //last boolean to toggle recursiveness
}) 

viewer.addEventListener(Autodesk.Viewing.AGGREGATE_SELECTION_CHANGED_EVENT, event=>{
   ... //multiple models
}) 

See doc for setThemingColor here .