49  Copyright  Goodheart-Willcox  Co.,  Inc.  Learning  Objectives  After  completing  this  chapter,  you  will  be  able  to:  ✓  Use  the  viewport  controls  to  display  views  and  control  the  display  of  view-  navigation  tools.  ✓  Use  the  navigation  bar  to  perform  a  variety  of  display  manipulation  functions.  ✓  Create  and  save  named  views.  ✓  Use  the  view  cube  to  rotate  the  view  of  the  model  dynamically  in  3D  space.  ✓  Use  the  view  cube  to  display  orthographic  plan  views  of  all  sides  on  the  model.  ✓  Use  steering  wheels  to  display  a  3D  model  from  any  angle.  AutoCAD  provides  several  tools  with  which  you  can  display  and  present  3D  models  in  pictorial  and  orthographic  views:  •  The  viewport  controls,  discussed  in  Chapter  1.  •  Preset  isometric  viewpoints,  discussed  in  Chapter  1.  •  The  view  cube.  This  on-screen  tool  provides  access  to  preset  and  dynamic  display  options.  •  Steering  wheels.  •  The  3DORBIT,  3DFORBIT,  and  3DCORBIT  commands.  These  commands  provide  dynamic  display  and  continuous  orbiting  functions  for  demonstrations  and  presentations.  Once  a  viewpoint  has  been  selected,  you  can  enhance  the  display  by  applying  visual  styles.  The  View  panel  in  the  Home  tab  of  the  ribbon  provides  a  variety  of  ways  to  display  a  model,  including  wireframe  representation,  hidden  line  removal,  and  simple  shading.  An  introduction  to  visual  styles  is  provided  in  Chapter  1  and  complete  coverage  is  provided  in  Chapter  16.  A  more  advanced  representation  can  be  produced  by  creating  a  rendering  with  the  RENDER  command.  A  rendering  produces  the  most  realistic  image  with  high-  lights,  shading,  and  materials,  if  applied.  Figure  3-1  shows  a  3D  model  of  a  cast  iron  plumbing  cleanout  after  using  HIDE,  setting  the  Conceptual  visual  style  current,  and  using  RENDER.  Notice  the  difference  in  the  three  displays.  Viewing  and  Displaying  Three-Dimensional  Models  CHAPTER  3  3