when i loaded gltf model,i found rotation and scale is not zero or one,why it’s rotation,y is 180 and scale.z=-1.i set the rotation is o and scale is one when i export the model
Between your DCC tool, Babylon.js (left handed) & glTF (right handed), axys convention are not the same. The glTF loader fix this by creating the root node, and adapt default scale and rotation.
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i got it,thank you very much