FWSiStripClusterProxyBuilder

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// -*- C++ -*-
//
#include <vector>
#include "TEveGeoNode.h"
#include "TEveLine.h"
#include "TEveCompound.h"
#include "TEveGeoShape.h"

#include "Fireworks/Core/interface/fwLog.h"
#include "Fireworks/Core/interface/FWSimpleProxyBuilderTemplate.h"
#include "Fireworks/Core/interface/FWEventItem.h"
#include "Fireworks/Core/interface/FWGeometry.h"
#include "Fireworks/Tracks/interface/TrackUtils.h"

#include "DataFormats/SiStripCluster/interface/SiStripCluster.h"
#include "DataFormats/Common/interface/DetSetVectorNew.h"

class FWSiStripClusterProxyBuilder : public FWProxyBuilderBase {
public:
  FWSiStripClusterProxyBuilder(void);
  ~FWSiStripClusterProxyBuilder(void) override;

  REGISTER_PROXYBUILDER_METHODS();

  //    virtual void cleanLocal();
  void itemBeingDestroyed(const FWEventItem*) override;

protected:
  using FWProxyBuilderBase::build;
  void build(const FWEventItem* iItem, TEveElementList* product, const FWViewContext*) override;
  void localModelChanges(const FWModelId& iId,
                         TEveElement* iCompound,
                         FWViewType::EType viewType,
                         const FWViewContext* vc) override;

public:
  FWSiStripClusterProxyBuilder(const FWSiStripClusterProxyBuilder&) = delete;
  const FWSiStripClusterProxyBuilder& operator=(const FWSiStripClusterProxyBuilder&) = delete;

private:
  TEveElementList* m_shapeList;
};

FWSiStripClusterProxyBuilder::FWSiStripClusterProxyBuilder() : m_shapeList(nullptr) {
  m_shapeList = new TEveElementList("shapePool");
  m_shapeList->IncDenyDestroy();
}

FWSiStripClusterProxyBuilder::~FWSiStripClusterProxyBuilder() { m_shapeList->DecDenyDestroy(); }

void FWSiStripClusterProxyBuilder::itemBeingDestroyed(const FWEventItem* iItem) {
  m_shapeList->DestroyElements();
  FWProxyBuilderBase::itemBeingDestroyed(iItem);
}

void FWSiStripClusterProxyBuilder::build(const FWEventItem* iItem, TEveElementList* product, const FWViewContext*) {
  const edmNew::DetSetVector<SiStripCluster>* clusters = nullptr;
  iItem->get(clusters);
  if (nullptr == clusters)
    return;
  int cntEl = 0;

  for (TEveElement::List_i ei = product->BeginChildren(); ei != product->EndChildren(); ++ei) {
    TEveElement* holder = *ei;
    if (holder->HasChildren()) {
      holder->SetRnrSelfChildren(false, false);
      holder->RemoveElement(holder->LastChild());
    }
  }

  // check if need to create more shapes
  int sdiff = clusters->size() - m_shapeList->NumChildren();
  for (int i = 0; i <= sdiff; ++i)
    m_shapeList->AddElement(new TEveGeoShape("Det"));

  TEveElement::List_i shapeIt = m_shapeList->BeginChildren();
  for (edmNew::DetSetVector<SiStripCluster>::const_iterator set = clusters->begin(), setEnd = clusters->end();
       set != setEnd;
       ++set) {
    unsigned int id = set->detId();
    const FWGeometry::GeomDetInfo& info = *iItem->getGeom()->find(id);

    double array[16] = {info.matrix[0],
                        info.matrix[3],
                        info.matrix[6],
                        0.,
                        info.matrix[1],
                        info.matrix[4],
                        info.matrix[7],
                        0.,
                        info.matrix[2],
                        info.matrix[5],
                        info.matrix[8],
                        0.,
                        info.translation[0],
                        info.translation[1],
                        info.translation[2],
                        1.};

    // note TEveGeoShape owns shape
    TEveGeoShape* shape = (TEveGeoShape*)(*shapeIt);
    shape->SetShape(iItem->getGeom()->getShape(info));
    shape->SetTransMatrix(array);
    shape->SetRnrSelf(true);
    shapeIt++;

    for (edmNew::DetSet<SiStripCluster>::const_iterator ic = set->begin(), icEnd = set->end(); ic != icEnd; ++ic) {
      TEveCompound* itemHolder = nullptr;
      TEveLine* line = nullptr;

      if (cntEl < product->NumChildren()) {
        TEveElement::List_i pit = product->BeginChildren();
        std::advance(pit, cntEl);
        itemHolder = (TEveCompound*)*pit;
        itemHolder->SetRnrSelfChildren(true, true);

        line = (TEveLine*)(itemHolder->FirstChild());
        setupAddElement(shape, itemHolder);
      } else {
        itemHolder = createCompound();
        setupAddElement(itemHolder, product);
        line = new TEveLine("line");
        setupAddElement(line, itemHolder);
        setupAddElement(shape, itemHolder);
      }
      shape->SetMainTransparency(75);

      // setup line pnts
      float localTop[3] = {0.0, 0.0, 0.0};
      float localBottom[3] = {0.0, 0.0, 0.0};
      fireworks::localSiStrip((*ic).firstStrip(), localTop, localBottom, iItem->getGeom()->getParameters(id), id);
      float globalTop[3];
      float globalBottom[3];
      iItem->getGeom()->localToGlobal(id, localTop, globalTop, localBottom, globalBottom);
      line->SetPoint(0, globalTop[0], globalTop[1], globalTop[2]);
      line->SetPoint(1, globalBottom[0], globalBottom[1], globalBottom[2]);

      cntEl++;
    }
  }
}
void FWSiStripClusterProxyBuilder::localModelChanges(const FWModelId& iId,
                                                     TEveElement* iCompound,
                                                     FWViewType::EType viewType,
                                                     const FWViewContext* vc) {
  increaseComponentTransparency(iId.index(), iCompound, "Det", 60);
}

REGISTER_FWPROXYBUILDER(FWSiStripClusterProxyBuilder,
                        edmNew::DetSetVector<SiStripCluster>,
                        "SiStripCluster",
                        FWViewType::kAll3DBits | FWViewType::kAllRPZBits);