from enum import IntEnum

class FaceType(IntEnum):
    HALF = 0,
    FULL = 1,
    HEAD = 2,    
    AVATAR = 3,    #centered nose only
    MARK_ONLY = 4, #no align at all, just embedded faceinfo
    QTY = 5

    @staticmethod
    def fromString (s):
        r = from_string_dict.get (s.lower())
        if r is None:
            raise Exception ('FaceType.fromString value error')
        return r            
            
    @staticmethod        
    def toString (face_type):
        return to_string_list[face_type]
        
from_string_dict = {'half_face': FaceType.HALF,
                    'full_face': FaceType.FULL,
                    'head' : FaceType.HEAD,
                    'avatar' : FaceType.AVATAR,
                    'mark_only' : FaceType.MARK_ONLY,
                    }
to_string_list = [ 'half_face',
                   'full_face',
                   'head',
                   'avatar',
                   'mark_only'   
                    ]