37 lines
1.6 KiB
HTML
37 lines
1.6 KiB
HTML
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<p>
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Normally, when you trim regions by dragging with the mouse, it affects
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only the selected regions. Their lengths are directly affected by the
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trim operation, but nothing else is. Sometimes though, you might like
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to trim a region that directly adjoins another, and keep this relationship
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the same—you are not trying to make one of the regions extend
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over the other—you would like the junction to move in one
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direction or the other as part of the trim. This requires trimming both
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regions on either side of the junction, in opposite directions.
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<dfn>Push/Pull trim</dfn>, activated by pressing shift key before
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starting the drag, will do just that. Here's a few pictures to show the
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difference in the results of a normal trim and push/pull trim. First,
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the initial situation:
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</p>
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<img src="/images/a3_before_trim.png" alt="region arrangement before trim" />
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<p>
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Here is what happens after we trim the right hand (selected) region by
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dragging its starting position earlier:
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</p>
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<img src="/images/a3_after_trim.png" alt="region arrangement after a trim" />
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<p>
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You can see that it now overlaps the earlier region and a crossfade has
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been created between them.
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</p>
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<p>
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Lets look now at what happens if we do the same trim, but <kbd
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class="mouse mod3">Left</kbd>-dragging to turn it into a push-pull trim instead:
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</p>
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<img src="/images/a3_after_push_trim.png" alt="region arrangement after a push trim" />
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<p>
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There is no overlap, and the end of the earlier region has been moved
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along with the start of the later region, so that they still directly
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adjoin each other.
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</p>
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