OptionalnameOptionalmatrixExplicit local matrix (column-major) when the node uses one instead of TRS.
OptionalweightsDefault morph weights override for this node's mesh, if any.
OptionalinstanceEXT_mesh_gpu_instancing per-instance local transforms, or undefined when the
node has no instancing. A flat count × 16 column-major array: each 16-float
block is one instance's TRS matrix in the node's local space. The instance's
world transform is nodeWorldMatrix × instanceMatrix, so the node's mesh is
drawn once per block. (count = instanceMatrices.length / 16.)
OptionallightKHR_lights_punctual: index into GltfModel.lights for the light attached to this node, or undefined when the node has no light.
One scene node from the glTF node graph, with defaults filled in.
parentis the parent node index (-1 for roots);mesh/skinare -1 when absent.