no. the character pink in the wall is loosely based on syd barrett, their original singer/songwriter/guitarist. he took way too many hard drugs and went insane, and after he became unable to continue to perform with them due to insanity, he was replaced with a friend of his, david gilmore.
my favorite floyd album was dark side of the moon... and its still a great album, i've just heard it so many times it just doesnt have all of the magic it used to have for me. animals is my favorite now. i dont really dig many of the other songs on meddle, but i LOVE echoes, the 20 minute song that finishes out meddle.
atom heart mother is different... they were still trying to find their sound after losing syd, but before meddle started to shape it, and everything fell into place with DSOTM a couple years later. it still has some great pieces on it... all of the recordings of it i've heard have had terrible sound quality though.