PARAMS:

• rh: rotation horizontal, for example rh:-45
• rv: rotation vertical, for example rv:15
• s: size in pixel, for example s:128
• var: name of the material variant (if applicable) which should be rendered, for example var:street

GLB_URL: The URL of a GLB/glTF model, for example https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Models/master/2.0/MaterialsVariantsShoe/glTF/MaterialsVariantsShoe.gltf