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Use linearRamp and correct a small bug in lerpFill

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This commit is contained in:
Paul Fd 2020-03-15 02:09:30 +01:00
parent 84b58f82bd
commit e58bf6f8cb
1 changed files with 12 additions and 6 deletions
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18
src/sfizz/Curve.cpp
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@ -6,6 +6,7 @@
#include "Curve.h"
#include "Opcode.h"
#include "SIMDHelpers.h"
#include "Debug.h"
#include <spline/spline.h>
#include <cmath>
@ -133,13 +134,18 @@ void Curve::fill(Interpolator itp, const bool fillStatus[NumValues])
void Curve::lerpFill(const bool fillStatus[NumValues])
{
for (int iCurr = 1; iCurr < NumValues - 1; ++iCurr) {
int iLeft, iRight;
iLeft = iCurr - 1;
for (iRight = iCurr + 1; iRight < 127 && !fillStatus[iRight]; ++iRight);
int left { 0 };
int right { 1 };
auto pointSpan = absl::MakeSpan(_points);
float mu = static_cast<float>(iCurr - iLeft) / (iRight - iLeft);
_points[iCurr] = _points[iLeft] + mu * (_points[iRight] - _points[iLeft]);
while (right < NumValues) {
for (; right < NumValues && !fillStatus[right]; ++right);
const auto length = right - left;
if (length > 1) {
const float mu = (_points[right] - _points[left]) / length;
linearRamp<float>(pointSpan.subspan(left + 1, length - 1), _points[left], mu);
}
left = right++;
}
}