30 lines
1.4 KiB
Plaintext
30 lines
1.4 KiB
Plaintext
<b>Pause and play</b>
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Pause freezes the <i>display</i>, not the acquisition. The producer keeps filling the ring at
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full rate; the view binds an immutable snapshot of the window that was on screen, and the axis
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is pinned to it.
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<b>How to reach it</b>
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The pause button in the toolbar, or <tt>Space</tt>. Press it again to resume, which rebinds the
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live ring and puts the window back on the newest data.
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<b>Worth knowing</b>
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• Nothing is lost while paused. Because the producer never stops, resuming shows current data
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with no hole in the history behind it.
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• The axis is pinned to the <i>snapshot's own stamps</i>, not to the window that was requested.
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A window reaching back past the oldest retained sample yields a shorter snapshot, and the
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pinned axis is that shorter span — so you see a narrower view rather than an empty margin.
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• A paused view is pinned exactly as a held trigger event is: zoom in freely, but a pan or a
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zoom out is clamped to the snapshot's data.
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• Pausing is the easiest way to measure a layout or read a cursor precisely, because nothing
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under the pointer moves between frames.
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<b>Example</b>
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Pause with a 2 s window over a ring holding 1.4 s: the frozen axis reads
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<tt>[-1.40 .. 0.00]</tt> rather than <tt>[-2.00 .. 0.00]</tt> with 0.6 s of blank. The pause
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probe reports <tt>ring_produced</tt> still growing across the pause and
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<tt>event_size</tt> non-zero exactly while paused.
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