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Ensure the extreme values of xfade curves are exact

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This commit is contained in:
Jean Pierre Cimalando 2020-04-13 02:18:20 +02:00
parent 5bd80b4834
commit 12e9cf8896
1 changed files with 6 additions and 2 deletions
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8
src/sfizz/Curve.cpp
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@ -84,13 +84,17 @@ Curve Curve::buildPredefinedCurve(int index)
} }
break; break;
case 5: case 5:
for (unsigned i = 0; i < NumValues; ++i) { curve._points[0] = 0.0;
curve._points[NumValues - 1] = 1.0;
for (unsigned i = 1; i < NumValues - 1; ++i) {
double x = i / static_cast<double>(NumValues - 1); double x = i / static_cast<double>(NumValues - 1);
curve._points[i] = std::sqrt(x); curve._points[i] = std::sqrt(x);
} }
break; break;
case 6: case 6:
for (unsigned i = 0; i < NumValues; ++i) { curve._points[0] = 1.0;
curve._points[NumValues - 1] = 0.0;
for (unsigned i = 1; i < NumValues - 1; ++i) {
double x = i / static_cast<double>(NumValues - 1); double x = i / static_cast<double>(NumValues - 1);
curve._points[i] = std::sqrt(1.0 - x); curve._points[i] = std::sqrt(1.0 - x);
} }