**CIGAL Reference Manual, Chapter 6 (RealTime): r_bmove**
===== r_bmove -- Move a screen rectangle by an X-Y offset =====
**usage: r_bmove  opflg eflag ltime Point Box Nsteps DeltaT**

R_BMOVE is a REALTIME operator. It moves a rectangular region of the screen
image by X and Y offsets specified by POINT (a short integer array with 2
elements, which are interpreted as deltaX and deltaY). The size and position
of the starting region are specified by the BOX argument (a short integer
array specifying 4 values: left, top, right, bottom).  Regions no longer
occupied by the rectangle are filled with the current background color (see
[[jvs:cigal:manual:chapter6:r_color|R_COLOR(6)]]).  The values within the BOX array are updated to reflect the new
position of the rectangle.

If NSTEPS is specified, the rectangle can be moved to many different positions
with a single R_BMOVE operation.  NSTEPS specifies the number of steps in the
motion and DELTAT is the time interval (in 20 um clock ticks) between each
step.  If the POINT argument is autoindexed (i.e., point++) a new POINT
(deltax, deltay) pair will be used for each step, allowing nonuniform motion.

**See Also:**\\
[[jvs:cigal:manual:chapter6:r_bput|R_BPUT]],
[[jvs:cigal:manual:chapter6:r_bset|R_BSET]],
[[jvs:cigal:manual:chapter6:r_bdraw|R_BDRAW]],
[[jvs:cigal:manual:chapter6:r_movept|R_MOVEPT]]

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