+
+#=========================================================
+# Find VTK (required)
+FIND_PACKAGE(VTK REQUIRED)
+IF(VTK_FOUND)
+ INCLUDE(${VTK_USE_FILE})
+ELSE(VTK_FOUND)
+ MESSAGE(FATAL_ERROR "Please set VTK_DIR.")
+ENDIF(VTK_FOUND)
+#=========================================================