ALL NEW GRAPHICS CREATED BY SANTIAGO V LOMBEYDA, CACR, CALTECH 1999©

__usage___________________________

usage: cvview -h
       cvview -gravity
	      -switch <switchname>
	      -switchspeed <0-10>
	      -blend -add -sortedadd -delayedadd -blend
	             -delayedblend -sortedblend
              -environment <environment.iv>
              inputfile.iv [inputfile2.iv ...]

• -switch <switchname> takes is a DEFined node name found in the inputfile, which will be used as a selector to move along data sets.
  
  
• -switchspeed <0-10> sets the speed in frame delays (10 is fastest, 1 slowest) of how quickly to parse across datasets. speed 0 will change dataset only once every time a joystick is moved (i.e. must be moved back to the center before moving again).
  
  
• -gravity only affects the navigate mode. it will restrict most movement to the x-z plane (parallel to floor), unless the wand is clearly pointing upwards or downwards case in which the movement will be along the y axis (up or down).
  
  
• -blend -add -sortedadd -delayedadd -blend -delayedblend -sortedblend are transparency options. for more information on blending see SoGLRenderAction. the default is screendoor.
  • screendoor uses stipple patterns for screen-door transparency
  • add uses additive alpha blending
  • delayedadd uses additive blending, rendering all transparent objects after opaque ones
  • sortedadd works same as delayedadd, but sorts transparent objects by distances of bounding boxes from camera
  • blend uses multiplicative alpha blending
  • delayedblend uses multiplicative alpha blending, rendering all transparent objects after opaque ones
  • sortedblend works same as delayedblend, but sorts transparent objects by distances of bounding boxes from camera
  
  
  
• -environment <environmentfile.iv> reads a separate scene file which is placed at root, and thus affects all shown. this environment is not affected by user translation (movent) but is by user rotation (orientation). [not implemented as of yet]

• cvview -switch stepSwitch isosurfaces.iv
• cvview -sortedblend -switch giodSwitch -switchspeed 0 data/machine-pieces.iv
• cvview -sortedblend -switchspeed 0 data/parts/carburator.iv data/parts/pisons.iv data/parts/sparkplugs.iv
• cvview -gravity data/floorplan.iv
  
  [ download chess models 40kb ] by paul s strauss (sgi)
• cvview -gravity chess/chessboard.iv
• cvview -switch pieceSwitch chess/chess.iv

__view modes______________________

__navigate__

__manipulate__

__fly__

__scale__

__data explore__

__exit__

__download_________________________

• cvview.2.0.tar.gz 180kb (irix sgi-oi)
  
• [n/a] (irix tgs-oi)
  
• [n/a] (irix sgi-performer)
  

__faq and know problems____________

reports:
• cvview exits two ways:
  clean exit 'esc' key is pressed
  messy exit from the exit mode, it looks for cvview process and kills it. (uses awk!)
• some times witch switchspeed=0 one cannot reach all datasets.
  easy solution: just change mode, then go back to data explore.

__future improvements______________

• cvview will be recompiled using tgs's open inventor thus being able to input vrml files
• cvview will be revamped using sgi's iris performer thus running much faster and being able to support multiple display caves.
• capabilites will be added under manipulate mode to explore the data
• capabilites will be added under explore data to be able to parse multiple levels and dimensions of data
• a socket link will be created to work with visualization systems such as NAG's Iris Explorer
• add simple collision detection through the use of 'floor bit maps'.

__disclaimer and contacts__________