如何使用 Autodesk Forge Viewer 获取材质颜色？

Question

I'm trying to get the material of a fragment in Forge Viewer. I tried calling NOP_VIEWER.impl.getMaterial(fragId) but returned nothing. Viewer matman().materials returns all materials, but I don't know how to get the right material of the current fragment.

Answer 1

You can get the material assigned to a specific geometry/fragment through the FragmentList class and its getMaterial(fragid) method, for example, like so:

function getObjectMaterials(dbid, model) {
    const tree = model.getInstanceTree();
    const frags = model.getFragmentList();
    tree.enumNodeFragments(dbid, function (fragid) {
        const material = frags.getMaterial(fragid);
        console.log('Object', dbid, 'has material', material);
    }, true);
}