155 lines
4.8 KiB
C++
155 lines
4.8 KiB
C++
//------------------------------------------------------------------
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// Iwa_ParticlesManager for Marnie
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// based on ParticlesManager by Digital Video
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//------------------------------------------------------------------
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#include "trenderer.h"
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#include <QMutexLocker>
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#include "iwa_particlesmanager.h"
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/*
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EXPLANATION:
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ParticlesManager improves the old particles system as follows - the particles manager stores the
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last particles configuration which had some particle rendered by a thread.
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Under normal cicumstances, this means that every thread has the particles configuration that rendered
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last. In case a trail was set, such frame is that beyond the trail.
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This managemer works well on the assumption that each thread builds particle in an incremental timeline.
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*/
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//--------------------------------------------------------------------------------------------------
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DEFINE_CLASS_CODE(Iwa_ParticlesManager::FxData, 170) /*- 注：ParticlesManager::FxDataは110 -*/
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//--------------------------------------------------------------------------------------------------
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typedef std::map<double, Iwa_ParticlesManager::FrameData> FramesMap;
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//************************************************************************************************
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// Preliminaries
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//************************************************************************************************
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class Iwa_ParticlesManagerGenerator : public TRenderResourceManagerGenerator
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{
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public:
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Iwa_ParticlesManagerGenerator() : TRenderResourceManagerGenerator(true) {}
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TRenderResourceManager *operator()(void)
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{
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return new Iwa_ParticlesManager;
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}
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};
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MANAGER_FILESCOPE_DECLARATION(Iwa_ParticlesManager, Iwa_ParticlesManagerGenerator);
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//************************************************************************************************
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// FrameData implementation
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//************************************************************************************************
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Iwa_ParticlesManager::FrameData::FrameData(FxData *fxData)
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: m_fxData(fxData), m_frame((std::numeric_limits<int>::min)()), m_calculated(false), m_maxTrail(-1), m_totalParticles(0)
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{
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m_fxData->addRef();
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}
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//-------------------------------------------------------------------------
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Iwa_ParticlesManager::FrameData::~FrameData()
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{
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m_fxData->release();
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}
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//-------------------------------------------------------------------------
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void Iwa_ParticlesManager::FrameData::buildMaxTrail()
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{
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//Store the maximum trail of each particle
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std::list<Iwa_Particle>::iterator it;
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for (it = m_particles.begin(); it != m_particles.end(); ++it)
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m_maxTrail = tmax(m_maxTrail, it->trail);
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}
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//-------------------------------------------------------------------------
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void Iwa_ParticlesManager::FrameData::clear()
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{
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m_frame = (std::numeric_limits<int>::min)();
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m_particles.clear();
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m_random = TRandom();
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m_calculated = false;
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m_maxTrail = -1;
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m_totalParticles = 0;
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}
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//************************************************************************************************
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// FxData implementation
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//************************************************************************************************
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Iwa_ParticlesManager::FxData::FxData()
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: TSmartObject(m_classCode)
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{
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}
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//************************************************************************************************
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// ParticlesContainer implementation
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//************************************************************************************************
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Iwa_ParticlesManager *Iwa_ParticlesManager::instance()
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{
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return static_cast<Iwa_ParticlesManager *>(
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Iwa_ParticlesManager::gen()->getManager(TRenderer::renderId()));
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}
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//-------------------------------------------------------------------------
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Iwa_ParticlesManager::Iwa_ParticlesManager()
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: m_renderStatus(-1)
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{
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}
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//-------------------------------------------------------------------------
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Iwa_ParticlesManager::~Iwa_ParticlesManager()
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{
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//Release all fxDatas
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std::map<unsigned long, FxData *>::iterator it, end = m_fxs.end();
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for (it = m_fxs.begin(); it != end; ++it)
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it->second->release();
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}
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//-------------------------------------------------------------------------
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void Iwa_ParticlesManager::onRenderStatusStart(int renderStatus)
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{
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m_renderStatus = renderStatus;
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}
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//-------------------------------------------------------------------------
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Iwa_ParticlesManager::FrameData *Iwa_ParticlesManager::data(unsigned long fxId)
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{
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QMutexLocker locker(&m_mutex);
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std::map<unsigned long, FxData *>::iterator it = m_fxs.find(fxId);
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if (it == m_fxs.end()) {
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it = m_fxs.insert(std::make_pair(fxId, new FxData)).first;
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it->second->addRef();
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}
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FxData *fxData = it->second;
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FrameData *d = fxData->m_frames.localData();
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if (!d) {
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d = new FrameData(fxData);
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fxData->m_frames.setLocalData(d);
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}
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return d;
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}
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bool Iwa_ParticlesManager::isCached(unsigned long fxId)
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{
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std::map<unsigned long, FxData *>::iterator it = m_fxs.find(fxId);
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return (it != m_fxs.end());
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}
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