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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "splineanimation_p.h"
#include "splinechartitem_p.h"
#include <QDebug>
Q_DECLARE_METATYPE(QVector<QPointF>)
Q_DECLARE_METATYPE(SplineVector)
QTCOMMERCIALCHART_BEGIN_NAMESPACE
SplineAnimation::SplineAnimation(SplineChartItem* item):XYAnimation(item),
m_item(item),
m_dirty(true)
{
}
SplineAnimation::~SplineAnimation()
{
}
void SplineAnimation::setup(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 (animationType()) {
case RemovePointAnimation:
case AddPointAnimation:
case ReplacePointAnimation:
{
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 NewAnimation:{
Q_ASSERT(endPair.first.count() * 2 - 2 == endPair.second.count());
int count = endPair.first.count()* qBound(qreal(0), progress, qreal(1));
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() << "Unknown 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->setGeometryPoints(pair.first);
m_item->setControlGeometryPoints(pair.second);
m_item->updateGeometry();
}
}
QTCOMMERCIALCHART_END_NAMESPACE
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