【转帖】how to determine if face is single sided face
 

how to determine if face is single sided face
how to determine if face is single sided face
hi,
i am trying to read a face that is single sided face. i am reading a oddbface and was wondering if there was a function to determine if the face is single sided face. thus, the face can be viewed from one side but not the other. i am using dwgdirect 1.14.02. any clues would be great. like wise i would like to write a face that is single sided too.
thanks
su ming

oddbface is always two-sided.
sincerely yours,
george udov