implied odds and pot odds

[werero]

I’m new to NL and have a question about pot odds and implied odds and how to determine what odds you need for drawing in NL.

Say for example that you are HU and in position with a flush draw. Both players have full stacks of 100BB and Villain is unknown.
If villain bets the pot we are getting 2:1 on a call. Clearly not enough to call based on pot odds. I know it’s very dependent on situation but in general, is the implied odds gonna be enough for us to call in situations like these?

Also if he bets half the pot it means we are getting better odds but does that change anything?