splineanimation.cpp
127 lines
| 4.6 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r622 | #include "splineanimation_p.h" | ||
| #include "splinechartitem_p.h" | ||||
| Q_DECLARE_METATYPE(QVector<QPointF>) | ||||
| Q_DECLARE_METATYPE(SplineVector) | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| SplineAnimation::SplineAnimation(SplineChartItem* item):ChartAnimation(item), | ||||
| m_item(item), | ||||
| m_dirty(true) | ||||
| { | ||||
| } | ||||
| SplineAnimation::~SplineAnimation() | ||||
| { | ||||
| } | ||||
| void SplineAnimation::setValues(QVector<QPointF>& oldPoints,QVector<QPointF>& newPoints,QVector<QPointF>& oldControlPoints,QVector<QPointF>& newControlPoints,int index) | ||||
| { | ||||
| int x = oldPoints.count(); | ||||
| int y = newPoints.count(); | ||||
| Q_ASSERT(newPoints.count()*2-2 == newControlPoints.count()); | ||||
| if(x!=y && abs(x-y)!=1) { | ||||
| m_oldSpline.first= newPoints; | ||||
| m_oldSpline.second= newControlPoints; | ||||
| oldPoints.resize(newPoints.size()); | ||||
| oldControlPoints.resize(newControlPoints.size()); | ||||
| SplineVector oldPair; | ||||
| oldPair.first=oldPoints; | ||||
| oldPair.second=oldControlPoints; | ||||
| SplineVector newPair; | ||||
| newPair.first=newPoints; | ||||
| newPair.second=newControlPoints; | ||||
| setKeyValueAt(0.0, qVariantFromValue(oldPair)); | ||||
| setKeyValueAt(1.0, qVariantFromValue(newPair)); | ||||
| m_dirty=false; | ||||
| } | ||||
| else { | ||||
| if(m_dirty) { | ||||
| m_oldSpline.first = oldPoints; | ||||
| m_oldSpline.second = oldControlPoints; | ||||
| m_dirty=false; | ||||
| } | ||||
| oldPoints = newPoints; | ||||
| oldControlPoints = newControlPoints; | ||||
| if (y<x) { | ||||
| m_oldSpline.first.remove(index); //remove | ||||
| m_oldSpline.second.remove(index*2); | ||||
| m_oldSpline.second.remove(index*2); | ||||
| } | ||||
| if (y>x) { | ||||
| m_oldSpline.first.insert(index,x>0?m_oldSpline.first[index-1]:newPoints[index]); //add | ||||
| m_oldSpline.second.insert((index-1)*2,x>1?m_oldSpline.second[(index-2)*2]:newControlPoints[(index-1)*2]); //add | ||||
| m_oldSpline.second.insert((index-1)*2+1,x>1?m_oldSpline.second[(index-2)*2+1]:newControlPoints[(index-1)*2+1]); //add | ||||
| } | ||||
| SplineVector newPair; | ||||
| newPair.first=newPoints; | ||||
| newPair.second=newControlPoints; | ||||
| setKeyValueAt(0.0, qVariantFromValue(m_oldSpline)); | ||||
| setKeyValueAt(1.0, qVariantFromValue(newPair)); | ||||
| } | ||||
| } | ||||
| QVariant SplineAnimation::interpolated(const QVariant &start, const QVariant & end, qreal progress ) const | ||||
| { | ||||
| SplineVector startPair = qVariantValue< SplineVector >(start); | ||||
| SplineVector endPair = qVariantValue< SplineVector >(end); | ||||
| SplineVector result; | ||||
| switch(m_type) { | ||||
| case MoveDownAnimation: { | ||||
| if(startPair.first.count() != endPair.first.count()) break; | ||||
| Q_ASSERT(startPair.first.count()*2-2 == startPair.second.count()); | ||||
| Q_ASSERT(endPair.first.count()*2-2 == endPair.second.count()); | ||||
| for(int i =0;i< endPair.first.count();i++) { | ||||
| qreal x = startPair.first[i].x() + ((endPair.first[i].x()- startPair.first[i].x()) * progress); | ||||
| qreal y = startPair.first[i].y() + ((endPair.first[i].y()- startPair.first[i].y()) * progress); | ||||
| result.first << QPointF(x,y); | ||||
| if(i +1 >= endPair.first.count()) continue; | ||||
| x = startPair.second[i*2].x() + ((endPair.second[i*2].x()- startPair.second[i*2].x()) * progress); | ||||
| y = startPair.second[i*2].y() + ((endPair.second[i*2].y()- startPair.second[i*2].y()) * progress); | ||||
| result.second << QPoint(x,y); | ||||
| x = startPair.second[i*2+1].x() + ((endPair.second[i*2+1].x()- startPair.second[i*2+1].x()) * progress); | ||||
| y = startPair.second[i*2+1].y() + ((endPair.second[i*2+1].y()- startPair.second[i*2+1].y()) * progress); | ||||
| result.second << QPoint(x,y); | ||||
| } | ||||
| } | ||||
| break; | ||||
| case LineDrawAnimation:{ | ||||
| Q_ASSERT(endPair.first.count()*2-2 == endPair.second.count()); | ||||
| int count = endPair.first.count()* qBound(0.0, progress, 1.0); | ||||
| for(int i =0;i<count;i++) { | ||||
| result.first << endPair.first[i]; | ||||
| if(i+1==count) break; | ||||
| result.second << endPair.second[2*i]; | ||||
| result.second << endPair.second[2*i+1]; | ||||
| } | ||||
| } | ||||
| break; | ||||
| default: | ||||
| qWarning()<<"Unknow type of animation"; | ||||
| break; | ||||
| } | ||||
| return qVariantFromValue(result); | ||||
| } | ||||
| void SplineAnimation::updateCurrentValue (const QVariant & value ) | ||||
| { | ||||
| if(state()!=QAbstractAnimation::Stopped){ //workaround | ||||
| m_dirty=true; | ||||
| QPair<QVector<QPointF >, QVector<QPointF > > pair = qVariantValue< QPair< QVector<QPointF>, QVector<QPointF> > >(value); | ||||
| m_item->setLayout(pair.first,pair.second); | ||||
| } | ||||
| } | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||