Revision control
++ // Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #include "lerpclipblend_p.h"
++ #include <Qt3DAnimation/qlerpclipblend.h>
++ #include <Qt3DAnimation/private/qlerpclipblend_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DAnimation {
++
++ namespace Animation {
++
++ LerpClipBlend::LerpClipBlend()
++ : ClipBlendNode(ClipBlendNode::LerpBlendType)
++ , m_startClipId()
++ , m_endClipId()
++ , m_blendFactor(0.0f)
++ {
++ }
++
++ LerpClipBlend::~LerpClipBlend()
++ {
++ }
++
++ void LerpClipBlend::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime)
++ {
++ BackendNode::syncFromFrontEnd(frontEnd, firstTime);
++ const QLerpClipBlend *node = qobject_cast<const QLerpClipBlend *>(frontEnd);
++ if (!node)
++ return;
++
++ m_blendFactor = node->blendFactor();
++ m_startClipId = Qt3DCore::qIdForNode(node->startClip());
++ m_endClipId = Qt3DCore::qIdForNode(node->endClip());
++ }
++
++ ClipResults LerpClipBlend::doBlend(const QList<ClipResults> &blendData) const
++ {
++ Q_ASSERT(blendData.size() == 2);
++ Q_ASSERT(blendData[0].size() == blendData[1].size());
++ const qsizetype elementCount = blendData.first().size();
++ ClipResults blendResults(elementCount);
++
++ for (qsizetype i = 0; i < elementCount; ++i)
++ blendResults[i] = (1.0f - m_blendFactor) * blendData[0][i] + (m_blendFactor * blendData[1][i]);
++
++ return blendResults;
++ }
++
++ double LerpClipBlend::duration() const
++ {
++ ClipBlendNode *startNode = clipBlendNodeManager()->lookupNode(m_startClipId);
++ const double startNodeDuration = startNode ? startNode->duration() : 0.0;
++
++ ClipBlendNode *endNode = clipBlendNodeManager()->lookupNode(m_endClipId);
++ const double endNodeDuration = endNode ? endNode->duration() : 0.0;
++
++ return (1.0 - static_cast<double>(m_blendFactor)) * startNodeDuration + static_cast<double>(m_blendFactor) * endNodeDuration;
++ }
++
++ } // Animation
++
++ } // Qt3DAnimation
++
++ QT_END_NAMESPACE