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QtLottie: Suboptimal fix for spatial properties.

This commit is contained in:
John Preston 2019-05-13 00:16:12 +03:00
parent 246e4e45bd
commit 5b04698f5f
3 changed files with 50 additions and 13 deletions
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2
Telegram/ThirdParty/qtlottie vendored

@ -1 +1 @@
Subproject commit 741b80b10cf8b2a06ed7dfda1bf9d64896ac0249
Subproject commit ff75b08c3adabaa33f7f879e12119de8ab1c2153

7
Telegram/ThirdParty/qtlottie_helper/QtBodymovin/private/bmproperty_p.h vendored
View File

@ -71,6 +71,13 @@ struct EasingSegment {
T endValue;
BezierEasing easing;
QPainterPath bezier;
double bezierLength = 0.;
struct BezierPoint {
QPointF point;
double length = 0.;
};
std::vector<BezierPoint> bezierPoints;
};
template<typename T>

54
Telegram/ThirdParty/qtlottie_helper/QtBodymovin/private/bmspatialproperty_p.h vendored
View File

@ -101,6 +101,20 @@ public:
easing.bezier.moveTo(s);
easing.bezier.cubicTo(c1, c2, e);
const auto kCount = 150;
easing.bezierPoints.reserve(kCount);
for (auto k = 0; k < kCount; ++k) {
const auto percent = double(k) / (kCount - 1.);
auto point = EasingSegment<QPointF>::BezierPoint();
point.point = easing.bezier.pointAtPercent(percent);
if (k > 0) {
const auto delta = (point.point - easing.bezierPoints[k - 1].point);
point.length = std::sqrt(QPointF::dotProduct(delta, delta));
easing.bezierLength += point.length;
}
easing.bezierPoints.push_back(point);
}
}
virtual bool update(int frame) override
@ -110,18 +124,34 @@ public:
int adjustedFrame = qBound(m_startFrame, frame, m_endFrame);
if (const EasingSegment<QPointF> *easing = getEasingSegment(adjustedFrame)) {
if (easing->state == EasingSegmentState::Complete) {
int length = (easing->endFrame - easing->startFrame);
qreal progress = (length > 0)
? ((adjustedFrame - easing->startFrame) * 1.0) / length
: 1.;
qreal easedValue = easing->easing.valueForProgress(progress);
m_value = easing->bezier.pointAtPercent(easedValue);
} else {
// In case of incomplete easing we should just take the final point.
//m_value = m_bezierPath.pointAtPercent(1.);
m_value = easing->endValue;
}
if (easing->state == EasingSegmentState::Complete) {
int length = (easing->endFrame - easing->startFrame);
qreal progress = (length > 0)
? ((adjustedFrame - easing->startFrame) * 1.0) / length
: 1.;
qreal easedValue = easing->easing.valueForProgress(progress);
//m_value = easing->bezier.pointAtPercent(easedValue);
const auto distance = easedValue * easing->bezierLength;
auto segmentPerc = 0.;
auto addedLength = 0.;
const auto count = easing->bezierPoints.size();
for (auto j = 0; j != count; ++j) {
addedLength += easing->bezierPoints[j].length;
if (distance == 0. || easedValue == 0. || j == count - 1) {
m_value = easing->bezierPoints[j].point;
break;
} else if (distance >= addedLength && distance < addedLength + easing->bezierPoints[j + 1].length) {
segmentPerc = (distance - addedLength) / easing->bezierPoints[j + 1].length;
m_value = easing->bezierPoints[j].point + (easing->bezierPoints[j + 1].point - easing->bezierPoints[j].point) * segmentPerc;
break;
}
}
} else {
// In case of incomplete easing we should just take the final point.
//m_value = m_bezierPath.pointAtPercent(1.);
m_value = easing->endValue;
}
}
return true;