import c4d


def main():
    objs = doc.GetActiveObjects(c4d.GETACTIVEOBJECTFLAGS_CHILDREN)
    doc.StartUndo()
    for obj in objs:
        mat = c4d.BaseMaterial(c4d.Mmaterial)
        mat.SetName(obj.GetName())
        tag_tex = c4d.BaseTag(c4d.Ttexture)
        tag_tex[c4d.TEXTURETAG_MATERIAL] = mat
        tag_tex[c4d.TEXTURETAG_PROJECTION] = 6

        doc.AddUndo(c4d.UNDOTYPE_NEW, tag_tex)
        obj.InsertTag(tag_tex)

        doc.AddUndo(c4d.UNDOTYPE_NEW, mat)
        doc.InsertMaterial(mat)

    c4d.EventAdd()
    doc.EndUndo()

if __name__=='__main__':
    main()