LONDON — Christian Slater has joined the cast of Lars von Trier’s erotic drama “Nymphomaniac,” which is shooting in Cologne, Germany.The pic focuses on a woman’s erotic journey from birth to the age of 50, as told in eight chapters by Joe, a self-diagnosed nymphomaniac. Joe is played by Charlotte Gainsbourg in later life and British model Stacy Martin in flashbacks. Slater will play her father. Slater’s recent roles include Fox’s comedy skein “Breaking In,” and action movies “Assassin’s Bullet” and “Soldiers of Fortune.” He will be seen next in Warner Bros.’ “Bullet to the Head.” The cast of “Nymphomaniac” also includes Stellan Skarsgard, Shia LaBeouf, Jamie Bell and Connie Nielsen. Louise Vesth produces for Zentropa Entertainments. Zentropa International Koln, Slot Machine and Caviar co-produce. TrustNordisk is handling international sales. Territories sold include U.K./Ireland (Artificial Eye), Russia/Ukraine/Kazakhstan (Central Partnership), Balkan states (Cinemania Groupicon), Estonia (Estin Film), Benelux (Four Corners/Wildbunch), Poland (Gutek Film), Romania (Independenta Film ’97) and Greece (Seven Films).