+ if (notify)
+ emit valueChanged();
+}
+
+
+static QVariant interpolate(int position, int in, int out, QVariant *splineIn, QVariant *splineOut)
+{
+ qreal relPos = (position - in) / (qreal)(out - in + 1);
+ QList<QVariant> keyframe1 = splineIn->toList();
+ QList<QVariant> keyframe2 = splineOut->toList();
+ QList<QVariant> keyframe;
+ if (keyframe1.count() && keyframe1.at(0).canConvert(QVariant::String))
+ keyframe1.removeFirst();
+ if (keyframe2.count() && keyframe2.at(0).canConvert(QVariant::String))
+ keyframe2.removeFirst();
+ int max = qMin(keyframe1.count(), keyframe2.count());
+
+ for (int i = 0; i < max; ++i) {
+ QList<QVariant> p1 = keyframe1.at(i).toList();
+ QList<QVariant> p2 = keyframe2.at(i).toList();
+ QList<QVariant> p;
+ for (int j = 0; j < 3; ++j) {
+ QPointF middle = QLineF(QPointF(p1.at(j).toList().at(0).toDouble(), p1.at(j).toList().at(1).toDouble()),
+ QPointF(p2.at(j).toList().at(0).toDouble(), p2.at(j).toList().at(1).toDouble())).pointAt(relPos);
+ p.append(QVariant(QList<QVariant>() << QVariant(middle.x()) << QVariant(middle.y())));
+ }
+ keyframe.append(QVariant(p));
+ }
+ return QVariant(keyframe);
+}
+
+bool adjustRotoDuration(QString* data, int in, int out)
+{
+ QJson::Parser parser;
+ bool ok;
+ QVariant splines = parser.parse(data->toUtf8(), &ok);
+ if (!ok) {
+ *data = QString();
+ return true;
+ }
+
+ if (!splines.canConvert(QVariant::Map))
+ return false;
+
+ QMap<QString, QVariant> newMap;
+ QMap<QString, QVariant> map = splines.toMap();
+ QMap<QString, QVariant>::iterator i = map.end();
+ int lastPos = -1;
+ QVariant last = QVariant();
+
+ /*
+ * Take care of resize from start
+ */
+ bool startFound = false;
+ while (i-- != map.begin()) {
+ if (!startFound && i.key().toInt() < in) {
+ startFound = true;
+ if (lastPos < 0)
+ newMap[QString::number(in).rightJustified(log10((double)out) + 1, '0')] = i.value();
+ else
+ newMap[QString::number(in).rightJustified(log10((double)out) + 1, '0')] = interpolate(in, i.key().toInt(), lastPos, &i.value(), &last);
+ }
+ lastPos = i.key().toInt();
+ last = i.value();
+ if (startFound)
+ i = map.erase(i);
+ }
+
+ /*
+ * Take care of resize from end
+ */
+ i = map.begin();
+ lastPos = -1;
+ bool endFound = false;
+ while (i != map.end()) {
+ if (!endFound && i.key().toInt() > out) {
+ endFound = true;
+ if (lastPos < 0)
+ newMap[QString::number(out)] = i.value();
+ else
+ newMap[QString::number(out)] = interpolate(out, lastPos, i.key().toInt(), &last, &i.value());
+ }
+ lastPos = i.key().toInt();
+ last = i.value();
+ if (endFound)
+ i = map.erase(i);
+ else
+ ++i;
+ }
+
+ /*
+ * Update key lengths to prevent sorting issues
+ */
+ i = map.begin();
+ while (i != map.end()) {
+ newMap[i.key().rightJustified(log10((double)out) + 1, '0', true)] = i.value();
+ ++i;
+ }
+
+ QJson::Serializer serializer;
+ *data = QString(serializer.serialize(QVariant(newMap)));
+
+ if (startFound || endFound)
+ return true;
+ return false;