Browsing the World

1
Browsing the World
Dr. Whitman 120G EB Office Hours
978-5907/larry.whitman_at_wichita.edu http//imfge.
wichita.edu/whitman.htm
Industrial Manufacturing Engineering
Department Wichita State University
2
Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

3
Viewpoints

• Describes a position and orientation for viewing
  the scene
• Any number of viewpoints (or cameras) may be
  placed
• Only one viewpoint may be active at a time
• Can choose viewpoints from the horizontal toolbar
  or pop-up menu

4
Pop-up menu options

• Viewpoints  Activates a list of the predefined
  viewpoints
• Headlight  Cortona automatically includes a
  light for the viewer in every world
• Navigation  You can select a navigation mode
• Speed  Controls the rate at which a camera moves
  through a world
• Full Screen This hides most screen elements to
  view the whole scene

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Pop-up menu options (Cont.)

• Hide/Show Toolbars  You can show or hide
  toolbars
• Show/Hide Console  Shows or hides the VRML
  console containing errors or warnings
• Preferences  Modifies settings for Cortona VRML
  Client such as screen appearance, a renderer
  mode, and other options
• Help  Lets you view the online help system and
  general information about Cortona

6
Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

7
Moving around the 3-D world

• There are three navigation modes
• Walk
• Fly
• Study
• Each modes have several option to change your
  position in a world
• Plan
• Pan
• Turn
• Roll
• The combination of modes and its option
  determines the camera motion and its orientation

8
WALK PLAN

• and
• Use WALKPLAN to move in a horizontal plane.
• Forward - move closer to world
• Backward - move further from world
• Right - World moves to your left (Camera
  moves to right)
• Left - World moves to your right (Camera
  moves to left)

9
WALK PAN

• and
• Use WALKPAN to move left or right in a
  horizontal plane.
• Forward - move closer to world
• Backward - move further from world
• Right - move to right
• Left - move to left

10
WALK TURN

• and
• Use WALK TURN to change the angle of the camera
  in a world
• Forward - turn upward
• Backward - turn downward
• Right - turn to the right
• Left - turn to the left
• Note WALK ROLL combination is not available

11
Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

12
FLY PLAN

• and
• Use FLYPLAN to move left or right
• Forward - move the camera forward towards its
  longitudinal axis (Zoom in)
• Backward - move the camera backward(Zoom out)
• Right - turn the camera to the right around its
  vertical axis
• Left - turn the camera to the left around its
  vertical axis

13
FLY PAN

• and
• Use FLYPAN to move up, down, left, or right
  within a single vertical plane
• Forward - move up
• Backward - move down
• Right - move right
• Left - move left

14
FLY TURN

• and
• Use FLY TURN to turn the camera
• Forward - turn the camera upward around its
  horizontal axis
• Backward - turn the camera downward around its
  horizontal axis
• Right - turn the camera to the right around its
  vertical axis
• Left - turn the camera to the left around its
  vertical axis

15
FLY ROLL

• and
• Use FLY ROLL to incline the camera
• Right - incline to the left
• Left - incline to the right

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Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

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STUDY PLAN

• and
• Use STUDYPLAN to examine an object from various
  angles
• Forward - move the camera forward
• Backward - move the camera backward
• Right, Left - move the camera around the point
  where you press the left mouse
  button

18
STUDY PAN

• and
• Use STUDYPAN to move up, down, left, or right
  within a single vertical plane
• Forward - move the camera up
• Backward - move the camera down
• Right - move the camera right
• Left - move the camera left

19
STUDY TURN

• and
• Use STUDY TURN to examine an object from
  various angles
• Position the pointer over the object and press
  the left mouse button
• Drag the mouse to move the camera around the
  point on the object where you press the button

20
STUDY ROLL

• and
• Use STUDY ROLL to incline the camera around the
  selected point
• Position the pointer over the object and press
  the left mouse button
• Drag the mouse to incline the camera around the
  point on the object where you press the button
• Right - incline to the left
• Left - incline to the right

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Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

22
GOTO

• Use GOTO to move close to object in a world

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Reorienting your position in 3D world

• Use RESTORE to automatically return to the loaded
  world's original active viewpoint.
• Use FIT to make the scene view fully visible in
  the Cortona 3D window.
• Use ALIGN to position the camera's horizontal and
  longitudinal axes parallel to the scene
  horizontal plane. 

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Cortona Browser

• Lecture 1
• Screen Orientation
• Viewpoints
• Pop-up menu options
• Lecture 2
• Moving around the 3-D world
• Walk
• Lecture 3 Fly
• Lecture 4 - Study
• Lecture 5
• Reorienting your position in 3-D world
• Goto
• Restore
• Fit
• Align
• Lecture 6
• Applications

25
Examples

• Some good examples in the Internet
• ftp//ftp.sgi.com/sgi/vrml/TrackingViewpoint/FTC_a
  nyviewer.wrl
• http//www.stl.nps.navy.mil/brutzman/vrml/example
  s/bachmann/orientation/orientation.wrl