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CAVE_WALL_ID | - an enumerated type for identifying the different
walls available in the CAVE, with values such as CAVE_FRONT_WALL,
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CAVE_SCREEN0_WALL,
CAVE_SIMULATOR_WALL | , etc. There is a
distinct value for each wall which can be selected by the "Walls"
configuration option.
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CAVEID | - an enumerated type for most identifier constants other
than wall names.
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CAVE_SENSOR_ST | - a structure containing tracker sensor data. The
entries are:
- float x,y,z - the position of the sensor
- float azim,elev,roll - the orientation of the sensor (Euler angles)
- CAVE_TIMESTAMP_ST timestamp - the time that the most recent reading for
this sensor was taken. The CAVE_TIMESTAMP_ST struct is similar to a
struct timeval, with entries sec and usec.
- boolean calibrated - a flag indicating whether the current sensor data
has been calibrated (see the CalibrationFile config option)
- CAVEID frame - the frame of reference for this data; either
CAVE_TRACKER_FRAME or CAVE_NAV_FRAME
The orientation values are in degrees; azim and roll range
from -180 to 180, and elev ranges from -90 to 90. The order of the
rotations is azim (Y), elev (X), roll (Z).
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CAVE_CONTROLLER_ST | - a structure containing controller status information.
The entries are:
- int num_buttons - number of buttons on the controller
- int button[] - state of each button
- int num_valuators - number of valuators on the controller
- float valuator[] - state of each valuator
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CAVENETID | - a unique ID for a networked CAVE user
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CAVE_USER_ST | - a structure containing data for a networked user.
The structure entries are:
- CAVENETID id - the user's ID
- float timestamp - the last time data was received from this user
(in local CAVE time)
- int num_sensors - the number of tracker sensors
- CAVE_SENSOR_ST sensor[] - the user's tracking data; sensor[0]
contains the head data; the remaining entries contain the
data for the wand and other tracked devices
- CAVE_CONTROLLER_ST controller - the user's controller data (buttons
& valuators)
- void *app_data - a pointer which can be used to store application
data associated with the user. The library does not touch
this entry except to zero it when a new user is initialized.
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CAVELOCK
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- an IPC lock, as returned by CAVENewLock and used
by CAVESetReadLock, etc.
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CAVECALLBACK |
- a pointer to a callback function (i.e. void (*)())
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CAVE_ST | - a structure containing pointers to all the library data
for the CAVE. Some of the data are stored in shared memory; their entries
are therefore pointers, as the CAVE_ST structure itself is not shared.
The structure entries include:
- int num_sensors - the number of sensors being tracked
- CAVE_SENSOR_ST *sensor[] - the data from the tracker sensors
- CAVE_CONTROLLER_ST *controller - the controller status
- float *time - the current CAVE time; this is updated once per
display frame
- float *framesPerSecond - the current frame rate
- int *numUsers - the number of networked users
- CAVE_USER_ST **user - an array of pointers to the networked
users' data
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