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| |
| #ifndef BMSPATIALPROPERTY_P_H |
| #define BMSPATIALPROPERTY_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QPointF> |
| #include <QPainterPath> |
| |
| #include <QtBodymovin/private/bmproperty_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class BMSpatialProperty : public BMProperty2D<QPointF> |
| { |
| public: |
| virtual void construct(const QJsonObject &definition) override |
| { |
| qCDebug(lcLottieQtBodymovinParser) << "BMSpatialProperty::construct()"; |
| BMProperty2D<QPointF>::construct(definition); |
| } |
| |
| virtual EasingSegment<QPointF> parseKeyframe(const QJsonObject keyframe, bool fromExpression) override |
| { |
| EasingSegment<QPointF> easing = BMProperty2D<QPointF>::parseKeyframe(keyframe, fromExpression); |
| |
| // No need to parse further incomplete keyframes (i.e. last keyframes) |
| if (!easing.complete) { |
| return easing; |
| } |
| |
| qreal tix = 0, tiy = 0, tox = 0, toy = 0; |
| if (fromExpression) { |
| // If spatial property definition originates from |
| // an expression (specifically Slider), it contains scalar |
| // property. It must be expanded to both x and y coordinates |
| QJsonArray iArr = keyframe.value(QLatin1String("i")).toArray(); |
| QJsonArray oArr = keyframe.value(QLatin1String("o")).toArray(); |
| |
| if (iArr.count() && oArr.count()) { |
| tix = iArr.at(0).toDouble(); |
| tiy = tix; |
| tox = oArr.at(0).toDouble(); |
| toy = tox; |
| } |
| } else { |
| QJsonArray tiArr = keyframe.value(QLatin1String("ti")).toArray(); |
| QJsonArray toArr = keyframe.value(QLatin1String("to")).toArray(); |
| |
| if (tiArr.count() && toArr.count()) { |
| tix = tiArr.at(0).toDouble(); |
| tiy = tiArr.at(1).toDouble(); |
| tox = toArr.at(0).toDouble(); |
| toy = toArr.at(1).toDouble(); |
| } |
| } |
| QPointF s(easing.startValue); |
| QPointF e(easing.endValue); |
| QPointF c1(tox, toy); |
| QPointF c2(tix, tiy); |
| |
| c1 += s; |
| c2 += e; |
| |
| m_bezierPath.moveTo(s); |
| m_bezierPath.cubicTo(c1, c2, e); |
| |
| return easing; |
| } |
| |
| virtual bool update(int frame) override |
| { |
| if (!m_animated) |
| return false; |
| |
| int adjustedFrame = qBound(m_startFrame, frame, m_endFrame); |
| if (const EasingSegment<QPointF> *easing = getEasingSegment(adjustedFrame)) { |
| qreal progress = ((adjustedFrame - m_startFrame) * 1.0) / (m_endFrame - m_startFrame); |
| qreal easedValue = easing->easing.valueForProgress(progress); |
| m_value = m_bezierPath.pointAtPercent(easedValue); |
| } |
| |
| return true; |
| } |
| |
| private: |
| QPainterPath m_bezierPath; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // BMSPATIALPROPERTY_P_H |