from hachoir.field import StaticFieldSet, Float32 class Vertex(StaticFieldSet): format = ((Float32, "x"), (Float32, "y"), (Float32, "z")) def createValue(self): return (self["x"].value, self["y"].value, self["z"].value) class MapUV(StaticFieldSet): format = ((Float32, "u"), (Float32, "v")) def createValue(self): return (self["u"].value, self["v"].value)