ardour/livetrax
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fix short x-fade rendering

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This commit is contained in:
Robin Gareus 2015-09-14 21:18:56 +02:00
parent e63c3d028a
commit 9a533c925b
1 changed files with 2 additions and 1 deletions
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3
libs/canvas/xfade_curve.cc
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@ -178,13 +178,14 @@ XFadeCurve::get_path(Rect const & area, Cairo::RefPtr<Cairo::Context> context, C
Points::size_type left = 0; Points::size_type left = 0;
Points::size_type right = c.n_samples - 1; Points::size_type right = c.n_samples - 1;
assert (left < right);
// we should really really do a binary search rather than iterate // we should really really do a binary search rather than iterate
for (Points::size_type idx = 0; idx < c.n_samples - 1; ++idx) { for (Points::size_type idx = 0; idx < c.n_samples - 1; ++idx) {
left = idx; left = idx;
window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false); window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false);
if (window_space.x >= area.x0) break; if (window_space.x >= area.x0) break;
} }
for (Points::size_type idx = c.n_samples; idx >= left;) { for (Points::size_type idx = c.n_samples; right > left;) {
--idx; --idx;
window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false); window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false);
if (window_space.x <= area.x1) break; if (window_space.x <= area.x1) break;