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fix: graph jitter on load + format

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This commit is contained in:
zach
2026-11-09 20:20:27 +01:00
parent d69a6bcafd
commit e49ecabf62
13 changed files with 181 additions and 320 deletions
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Plugins/ZShell/Internal/linegeometry.cpp
+14 -21
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@@ -8,8 +8,8 @@ namespace ZShell::internal {
qreal snapLine(qreal logical, qint64 widthDev, qreal dpr) {
const qreal half = qreal(widthDev) / 2.0;
return (static_cast<qreal>(std::llround(logical * dpr - half)) + half)
/ dpr;
return (static_cast<qreal>(std::llround(logical * dpr - half)) + half) /
dpr;
}
void segmentControls(
@@ -51,8 +51,8 @@ qreal cubicY(
for (int it = 0; it < 16; ++it) {
const qreal t = (lo + hi) / 2.0;
const qreal u = 1.0 - t;
const qreal x = u * u * u * p1.x() + 3 * u * u * t * c1.x()
+ 3 * u * t * t * c2.x() + t * t * t * p2.x();
const qreal x = u * u * u * p1.x() + 3 * u * u * t * c1.x() +
3 * u * t * t * c2.x() + t * t * t * p2.x();
if (x < targetX)
lo = t;
else
@@ -61,8 +61,8 @@ qreal cubicY(
const qreal t = (lo + hi) / 2.0;
const qreal u = 1.0 - t;
return u * u * u * p1.y() + 3 * u * u * t * c1.y()
+ 3 * u * t * t * c2.y() + t * t * t * p2.y();
return u * u * u * p1.y() + 3 * u * u * t * c1.y() +
3 * u * t * t * c2.y() + t * t * t * p2.y();
}
namespace {
@@ -72,17 +72,14 @@ namespace {
int segmentIndexAt(const QVector<QPointF>& points, qreal targetX) {
const int last = points.size() - 2;
for (int i = 0; i < points.size() - 1; ++i) {
if (targetX <= points[i + 1].x())
return i;
if (targetX <= points[i + 1].x()) return i;
}
return qMax(0, last);
}
} // namespace
QPointF pointAtX(
const QVector<QPointF>& points,
qreal targetX,
bool curveSmoothing) {
const QVector<QPointF>& points, qreal targetX, bool curveSmoothing) {
const int j = segmentIndexAt(points, targetX);
QPointF c1;
QPointF c2;
@@ -93,9 +90,8 @@ QPointF pointAtX(
for (int it = 0; it < 24; ++it) {
const qreal t = (lo + hi) / 2.0;
const qreal u = 1.0 - t;
const qreal x = u * u * u * points[j].x()
+ 3 * u * u * t * c1.x() + 3 * u * t * t * c2.x()
+ t * t * t * points[j + 1].x();
const qreal x = u * u * u * points[j].x() + 3 * u * u * t * c1.x() +
3 * u * t * t * c2.x() + t * t * t * points[j + 1].x();
if (x < targetX)
lo = t;
else
@@ -104,18 +100,15 @@ QPointF pointAtX(
const qreal t = (lo + hi) / 2.0;
const qreal u = 1.0 - t;
const qreal y = u * u * u * points[j].y() + 3 * u * u * t * c1.y()
+ 3 * u * t * t * c2.y() + t * t * t * points[j + 1].y();
const qreal y = u * u * u * points[j].y() + 3 * u * u * t * c1.y() +
3 * u * t * t * c2.y() + t * t * t * points[j + 1].y();
return QPointF(targetX, y);
}
QVector<QPointF> curveVertices(
const QVector<QPointF>& points,
qreal dpr,
bool curveSmoothing) {
const QVector<QPointF>& points, qreal dpr, bool curveSmoothing) {
QVector<QPointF> out;
if (points.size() < 2)
return out;
if (points.size() < 2) return out;
out.reserve(points.size());
out.append(points.first());