d.frame - Manages display frames on the user's graphics monitor.
(GRASS Display Program)
This program manages display frames on the user's graphics
monitor. GRASS display programs at run-time connect with
graphics rendering programs. While the display programs
are identical on every hardware platform, the graphics
rendering programs are (essentially the only GRASS
programs) designed for individual hardware devices. These
rendering programs are managed with the GRASS program
are displayed in rectangular frames on whatever graphics
monitor the user is currently directing GRASS display
output to. These frames are created and managed with this
program, Note that GRASS frame contents are not
retained when one frame covers another. You cannot
shuffle frames from top to bottom and then back again.
They simply define rectangular areas on the screen where
subsequent drawing will occur.
- Creates a new display frame on the graphics monitor.
- Removes all existing display frames and reinitializes the
entire graphics screen
(the full-screen display frame).
- Prints the name of the active frame, in which GRASS display
output will appear.
- Selects a frame for the display of GRASS graphics. This frame is then
known as the "active frame".
- Prints the status of the user's graphics monitor and
active display frame to standard output. Information
includes the name and the dimensions of the current frame
on the graphics monitor, given in the form bottom
top left right. This function is useful for debugging
output, and for determining display screen coordinates.
- The name of the display frame to be created/selected.
- Where to place the frame (implies -c).
Frame coordinates are stated in the form:
bottom,top,left,right. The lower-left corner of the graphics
monitor always is at location 0,0 while the monitor's upper-right corner
is always at 100,100.
If the user has created multiple display frames that overlap one another,
whatever the user displays in the active frame will overwrite
those portions of the underlying frame where these frames overlap.
James Westervelt, U.S. Army Construction Engineering
Michael Shapiro, U.S. Army Construction Engineering