It’s all too easy to take the Alvin Ailey American Dance Theater for granted around here — Cal Performances is its West Coast home, and every April the company has a long run at Zellerbach Hall (Bancroft Way below Telegraph Ave., Berkeley). Granted, there were lean years, when the masterful dancing exceeded the creative reach of the repertory, but that time has passed. Under the artistic direction of Robert Battle since 2011, the company has reestablished itself as a force in modern dance, with sophisticated choreography that clearly inspires the dancers, in turn making them even more thrilling to watch. Divided among three separate programs, this spring’s residency is composed of works by innovative dance makers Ronald K. Brown, Ohad Naharin, and Bill T. Jones; Bay Area premieres by Aszure Barton and Ronald K. Brown; and Ailey classics. As always, every evening ends with Ailey’s beloved Revelations, an experience that bears repeating.