eve_macros.cc File Reference

#include <vector>
#include <list>
#include <string>
#include <cmath>
#include <TEveElement.h>
#include <TEveGeoNode.h>
#include <TGeoNode.h>
#include "eve_macros.h"

Go to the source code of this file.

Functions
TEveGeoShape *	clone (const TEveElement *element, TEveElement *parent)
void	expand_node (TEveElement *element)
const char *	get_name (const TEveElement *element)
const TGeoShape *	get_shape (const TEveElement *element)
TGeoShape *	get_shape (TEveElement *element)
const char *	get_title (const TEveElement *element)
TGeoMatrix *	get_transform (const TEveElement *element)
void	hide_tracker_endcap (TEveElement *tracker)
bool	is_leaf_node (const TEveElement *element)
void	set_children_visibility (TEveElement *element, const std::string &node_name, const std::vector< std::string > &children_name, bool visibility)
void	set_color (TEveElement *element, Color_t color, float alpha, unsigned int levels)
void	set_tracker_endcap_visibility (TEveElement *tracker, bool visibility)
void	show_tracker_endcap (TEveElement *tracker)

Function Documentation

TEveGeoShape* clone	(	const TEveElement *	element,
		TEveElement *	parent
	)

Definition at line 135 of file eve_macros.cc.

References clone(), extract(), get_name(), get_shape(), get_title(), and get_transform().

{
  TEveGeoShape* shape = new TEveGeoShape( get_name(element), get_title(element) );

  std::auto_ptr<TGeoMatrix> matrix( get_transform(element) );
  shape->SetTransMatrix( matrix.get() );
  delete matrix;

  TEveGeoShapeExtract extract;                  // FIXME put name and title here...
  extract.SetShape( (TGeoShape *) get_shape(element)->Clone() );
  extract.SetTrans( trans.Array() );
  extract.SetRnrSelf( true );
  extract.SetRnrElements( true );

  TEveGeoShape * clone = TEveGeoShape::ImportShapeExtract( &extract, parent );
  return clone;
}

void expand_node

(

TEveElement *

element

)

Definition at line 43 of file eve_macros.cc.

References python.Node::node.

{
  // force a TEveGeoNode to load all its children
  if (TEveGeoNode * node = dynamic_cast<TEveGeoNode *>( element )) {
    if (node->GetNChildren() == 0 && node->GetNode()->GetVolume()->GetNdaughters() > 0) {
      TIter next(node->GetNode()->GetVolume()->GetNodes());
      TGeoNode* dnode;
      while ((dnode = (TGeoNode*) next()) != 0) {
        TEveGeoNode* node_re = new TEveGeoNode(dnode);
        node->AddElement(node_re);
      }
    }
    return;
  }
  // a TEveGeoShape is always exanded
  //if (TEveGeoShape * shape __attribute__ ((unused)) = dynamic_cast<TEveGeoShape *>( element )) {
  //  return;
  //}
  // a generic TEveElement has no knwledge on children expansion
  return;
}

const char* get_name

(

const TEveElement *

element

)

Definition at line 13 of file eve_macros.cc.

References python.Node::node.

                                                    {
  // try as a TEveGeoNode or TEveGeoShape
  if (const TEveGeoNode * node = dynamic_cast<const TEveGeoNode *>( element ))
    return node->GetName();
  if (const TEveGeoShape * shape = dynamic_cast<const TEveGeoShape *>( element ))
    return shape->GetName();

  // try to access the element as a generic named object
  if (const TNamed * named = dynamic_cast<const TNamed *>( element ))
    return named->GetName();

  return 0;
}

const TGeoShape* get_shape

(

const TEveElement *

element

)

Definition at line 66 of file eve_macros.cc.

References python.Node::node.

                                                           {
  // a TEveGeoNode, can look into its TGeoNode and retrieve the shape
  if (const TEveGeoNode * node = dynamic_cast<const TEveGeoNode *>( element )) {
    return node->GetNode()->GetVolume()->GetShape();
  }
  // a TEveGeoShape owns its shape
  if (const TEveGeoShape * shape = dynamic_cast<const TEveGeoShape *>( element )) {
    TEveGeoShape * nc_shape = const_cast<TEveGeoShape *>( shape );
    return const_cast<const TGeoShape *>( nc_shape->GetShape() );
  }
  // a TEveElement is too generic, no way to get a shape
  return 0;
}

TGeoShape* get_shape

(

TEveElement *

element

)

Definition at line 81 of file eve_macros.cc.

                                               {
  // a TEveGeoNode cannot modify its shape
  //if (const TEveGeoNode * node __attribute__ ((unused)) = dynamic_cast<const TEveGeoNode *>( element )) {
  //  return 0;
  //}
  // a TEveGeoShape owns its shape, and can modifiy it
  if (TEveGeoShape * shape = dynamic_cast<TEveGeoShape *>( element )) {
    return shape->GetShape();
  }
  // a TEveElement is too generic, no way to get a shape
  return 0;
}

const char* get_title

(

const TEveElement *

element

)

Definition at line 28 of file eve_macros.cc.

References python.Node::node.

Referenced by clone().

                                                     {
  // try as a TEveGeoNode or TEveGeoShape
  if (const TEveGeoNode * node = dynamic_cast<const TEveGeoNode *>( element ))
    return node->GetTitle();
  if (const TEveGeoShape * shape = dynamic_cast<const TEveGeoShape *>( element ))
    return shape->GetTitle();

  // try to access the element as a generic named object
  if (const TNamed * named = dynamic_cast<const TNamed *>( element ))
    return named->GetTitle();

  return 0;
}

TGeoMatrix* get_transform

(

const TEveElement *

element

)

Definition at line 95 of file eve_macros.cc.

References i, and python.Node::node.

Referenced by clone().

                                                          {
  if (const TEveGeoNode * node = dynamic_cast<const TEveGeoNode *>( element )) {
    // a TEveGeoNode is a proxy to a TGeoNode, which knows its relative transformation wrt. its parent
    // so we follow the TEveGeoNode hierarchy up to a TEveGeoTopNode, then jump to its TGeoManager, and go back down the branches to the TEveGeoNode's TGeoNode
    std::vector< const TEveGeoNode * > nodes;
    const TEveGeoTopNode * top = 0;

    while ((top = dynamic_cast<const TEveGeoTopNode *>( node )) == 0) {
      // save the current node
      nodes.push_back(node);

      // check that the node actually has any parents
      TEveGeoNode * nc_node = const_cast<TEveGeoNode *>( node );
      if (nc_node->BeginParents() == nc_node->EndParents())
        return 0;

      // assume the firt parent is the good one, and check that the parent type is correct
      node = dynamic_cast<const TEveGeoNode *>( * nc_node->BeginParents() );
      if (node == 0)
        return 0;
    }
    // reached the top level node, start from its (optional) global transormation
    TGeoHMatrix * matrix = new TGeoHMatrix();
    (const_cast<TEveGeoTopNode *>(top))->RefGlobalTrans().SetGeoHMatrix( *matrix );
    for (unsigned int i = 0; i < nodes.size(); ++i)
      *matrix *= *(nodes[i]->GetNode()->GetMatrix());
    return matrix;
  }

  if (const TEveGeoShape * shape = dynamic_cast<const TEveGeoShape *>( element )) {
    // a TEveGeoShape knows the absolute transformation of its shape
    TGeoHMatrix * matrix = new TGeoHMatrix();
    (const_cast<TEveGeoShape *>(shape))->RefHMTrans().SetGeoHMatrix( *matrix );
    return matrix;
  }

  return 0;
}

void hide_tracker_endcap

(

TEveElement *

tracker

)

Definition at line 244 of file eve_macros.cc.

References set_tracker_endcap_visibility().

{
  set_tracker_endcap_visibility( tracker, false );
}

bool is_leaf_node

(

const TEveElement *

element

)

Definition at line 177 of file eve_macros.cc.

References python.Node::node.

{
  // a TEveGeoNode can have unaccounted-for children
  if (const TEveGeoNode * node = dynamic_cast<const TEveGeoNode *>( element )) {
    return ((node->GetNChildren() == 0) and (node->GetNode()->GetVolume()->GetNdaughters() == 0));
  }
  // a TEveGeoShape always knows its children
  if (const TEveGeoShape * shape = dynamic_cast<const TEveGeoShape *>( element )) {
    return (shape->GetNChildren() == 0);
  }
  // default implementation
  return (element->GetNChildren() == 0);
}

void set_children_visibility	(	TEveElement *	element,
		const std::string &	node_name,
		const std::vector< std::string > &	children_name,
		bool	visibility
	)

Definition at line 193 of file eve_macros.cc.

References get_name(), i, is_leaf_node(), j, AlCaRecoCosmics_cfg::name, or, and findQualityFiles::size.

{
  // try to access the element as a named thingy
  const char * name = get_name( element );
  if (not name or strncmp(name, node_name.c_str(), node_name.size()))
    // unnamed node, or wrong node
    return;

  for (std::list<TEveElement *>::iterator j = element->BeginChildren(); j != element->EndChildren(); ++j) {
    TEveElement * child = *j;
    name = get_name( child );
    if (not name)
      // unnamed node, ignore it
      continue;

    for (unsigned int i = 0; i < children_name.size(); ++i)
      if (not strncmp(name, children_name[i].c_str(), children_name[i].size())) {
        // change this child visibility
        if (is_leaf_node( child )) {
          child->SetRnrSelf( visibility );
          child->SetRnrChildren( false );
        } else {
          child->SetRnrSelf( false );
          child->SetRnrChildren( visibility );
        }
        break;
      }
  }
  // notify the element that is had changed
  element->ElementChanged(true, true);
}

void set_color	(	TEveElement *	element,
		Color_t	color,
		float	alpha,
		unsigned int	levels
	)

Definition at line 154 of file eve_macros.cc.

References expand_node(), i, and set_color().

{
  if (not element)
    return;

  // set this node's color
  element->SetMainColor( color );
  if (alpha > 1.) alpha = 1.;
  if (alpha < 0.) alpha = 0.;
  unsigned char transparency = (unsigned char) roundf(100. - (alpha * 100.));
  element->SetMainTransparency( transparency );

  if (levels > 0) {
    // set the node's children's color
    expand_node( element );
    for (std::list<TEveElement*>::iterator i = element->BeginChildren(); i != element->EndChildren(); ++i)
      set_color( *i, color, alpha, levels - 1);
  }
  // notify the element that it has changed
  element->ElementChanged(true, true);
}

void set_tracker_endcap_visibility	(	TEveElement *	tracker,
		bool	visibility
	)

Definition at line 226 of file eve_macros.cc.

References Reference_intrackfit_cff::endcap, and set_children_visibility().

{
  std::vector<std::string> endcap;
  endcap.push_back("tec:TEC");
  endcap.push_back("tidf:TIDF");
  endcap.push_back("tidb:TIDB");
  endcap.push_back("pixfwd:PixelForwardZPlus");
  endcap.push_back("pixfwd:PixelForwardZMinus");
  set_children_visibility( tracker, "tracker:Tracker", endcap, visibility );
}

void show_tracker_endcap

(

TEveElement *

tracker

)

Definition at line 238 of file eve_macros.cc.

References set_tracker_endcap_visibility().

{
  set_tracker_endcap_visibility( tracker, true );
}