Brain Imaging & Analysis Center

usage: r_bset opflg eflag ltime Point Box Flag

R_BSET is a REALTIME operator. It is used to position a rectangular region for subsequent screen I/O, without itself causing any change to occur on the screen. R_BSET modifies the coordinates of a rectangular region, BOX, to correspond to a new screen location specified by POINT. BOX is a short integer array with 4 values that define the size of the rectangle (left, top, right, bottom). POINT is a short integer array with 2 elements, which are interpreted as the new X and Y coordinates.

The FLAG argument is a bitflag that provides the following options:

        1 - center the rectangle at the POINT, otherwise the upper left corner
                of the rectangle is placed at POINT
        
        2 - treat the X,Y values in POINT as relative offsets
        
        4 - treat the X,Y values in POINT as relative offsets, but reverse the
            direction of motion (i.e., treat POINT as -X,-Y)

When R_BSET is done the coordinates in the BOX array are updated to reflect the new position of the rectangle.

See Also:
R_BPUT, R_BMOVE, R_BDRAW, R_MOVEPT

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