44 lines
1.9 KiB
HTML
44 lines
1.9 KiB
HTML
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<p>
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Normally, when trimming 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, when trimming a region
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that directly adjoins another, the desired result is to move the boundary
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between the regions and not to make these regions overlap. 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 <kbd class="mod3n"></kbd> key before
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starting the drag, will do just that.
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</p>
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<p>
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The following pictures show the difference in the results of a normal trim and
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a push/pull trim:
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</p>
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<figure>
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<img src="/images/before-trim.png" alt="region arrangement before trim" />
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<img src="/images/after-trim.png" alt="region arrangement after a trim" />
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<img src="/images/after-push-trim.png" alt="region arrangement after a push trim" />
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<figcaption>
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Trimming vs. push/pull trimming. Before trimming, After a simple trim, After a push/pull trim
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</figcaption>
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</figure>
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<p>
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In the initial situation, before trimming, two adjascent regions are present,
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the rightmost-one being selected.
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</p>
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<p>
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The simple trim, obtained by dragging the selected region's starting position earlier, overlaps
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the earlier region. A crossfade has been manually created between them, so their
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sound will fade from the leftmost region to the rightmost one.
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</p>
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<p>
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If the same trim is done, but by <kbd class="mod3n"></kbd><kbd class="mouse">Left</kbd>-dragging
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to turn it into a push-pull trim instead, there is no overlap, and the end of
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the earlier region has been moved along with the start of the later region, so
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that they still directly adjoin each other. In effect, it is like doing a simple
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trim to reduce the leftmost region, then doing a simple trim to extend the rightmost
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one to fill the gap.
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</p>
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