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36
37#include "lerpclipblend_p.h"
38#include <Qt3DAnimation/qlerpclipblend.h>
39#include <Qt3DAnimation/private/qlerpclipblend_p.h>
40
41QT_BEGIN_NAMESPACE
42
43namespace Qt3DAnimation {
44
45namespace Animation {
46
47LerpClipBlend::LerpClipBlend()
48 : ClipBlendNode(ClipBlendNode::LerpBlendType)
49 , m_startClipId()
50 , m_endClipId()
51 , m_blendFactor(0.0f)
52{
53}
54
55LerpClipBlend::~LerpClipBlend()
56{
57}
58
59void LerpClipBlend::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime)
60{
61 BackendNode::syncFromFrontEnd(frontEnd, firstTime);
62 const QLerpClipBlend *node = qobject_cast<const QLerpClipBlend *>(object: frontEnd);
63 if (!node)
64 return;
65
66 m_blendFactor = node->blendFactor();
67 m_startClipId = Qt3DCore::qIdForNode(node: node->startClip());
68 m_endClipId = Qt3DCore::qIdForNode(node: node->endClip());
69}
70
71ClipResults LerpClipBlend::doBlend(const QVector<ClipResults> &blendData) const
72{
73 Q_ASSERT(blendData.size() == 2);
74 Q_ASSERT(blendData[0].size() == blendData[1].size());
75 const int elementCount = blendData.first().size();
76 ClipResults blendResults(elementCount);
77
78 for (int i = 0; i < elementCount; ++i)
79 blendResults[i] = (1.0f - m_blendFactor) * blendData[0][i] + (m_blendFactor * blendData[1][i]);
80
81 return blendResults;
82}
83
84double LerpClipBlend::duration() const
85{
86 ClipBlendNode *startNode = clipBlendNodeManager()->lookupNode(id: m_startClipId);
87 const double startNodeDuration = startNode ? startNode->duration() : 0.0;
88
89 ClipBlendNode *endNode = clipBlendNodeManager()->lookupNode(id: m_endClipId);
90 const double endNodeDuration = endNode ? endNode->duration() : 0.0;
91
92 return (1.0 - static_cast<double>(m_blendFactor)) * startNodeDuration + static_cast<double>(m_blendFactor) * endNodeDuration;
93}
94
95} // Animation
96
97} // Qt3DAnimation
98
99QT_END_NAMESPACE
100

source code of qt3d/src/animation/backend/lerpclipblend.cpp