shuffle_backward

Context: shuffle

Synopsis

Shuffles the object one step backward in the depth.

Syntax

shuffle_backward([id,] object)

Description

id - an optional ChipsId structure containing values to modify the currency state for the command, or a string to specify the id of the object to operate on.
object - what type of object to modify, such as chips_line or chips_curve; see the Object Type section of "ahelp chipsopt"

By default, objects within a depth are ordered chonologically based on when they were added to that depth. The objects are stacked with the oldest item at the back of the list and the newest item at the front of the list. This order dictates how the objects overlap when drawn.

The shuffle_backward command moves the specified object one step further back in the stack. If no id is given, the current object of that type is shuffled. It is the same as calling shuffle or shuffle_<object> with the "chips_backward" direction.

Example 1

chips> add_line(.1,.1,.9,.9,"thickness=9 id=line1")
chips> add_line(.1,.9,.9,.1,"thickness=9 color=red id=line2")
chips> add_line(.6,.1,.6,.9,"thickness=9 color=lime id=line3")
chips> add_line(.4,.1,.4,.9,"thickness=9 color=yellow id=line4")
chips> current_line ("line3")
chips> shuffle_backward(chips_line)

Create four overlapping lines. Make "line3" current, then move it one step back in the depth.

Example 2

chips> add_line (.1, .1, .9, .9, "depth=100 color=red thickness=9")
chips> add_region (4, .5, .5, .3, "fill.style=1 depth=50")
chips> add_point (.5, .5, "size=9 depth=100")
chips> shuffle_backward(chips_point)

Move the point one step backward in the stack. It will then be behind the line, but on top of the region, because the region is at a lower depth.

Bugs

See the bugs pages on the ChIPS website for an up-to-date listing of known bugs.