The upcoming touring production of the tuner adaptation of “Flashdance” has lined up as cast led by Broadway alums Rachelle Rak, Emily Padgett and Matthew Hydzik.Padgett (“Rock of Ages,” “Legally Blonde”) will play Alex, the young steel mill worker with a gotta-dance dream; the part was played in the 1983 pic by Jennifer Beals. Hydzik (“West Side Story”) is on board as Alex’s boss and love interest, while Rak (“Catch Me If you Can”), a legit trouper possibly best known for a documentary appearance in which she almost nabbed a plum role in the 2006 revival of “A Chorus Line,” will portray an exotic dancer in the strip club where the show’s protag moonlights. Segio Trujillo directs and choreographs the production, which launches its tour in Pittsburgh in January and is booked through the summer. A separate production, meanwhile, is planned to begin perfs on Broadway in August. The road version of “Flashdance” bows Jan. 1 at Pittsburgh’s Heinz Hall before going on to stops in cities including St. Louis, Louisville and Seattle.