PolyLineObject.cc

/*===========================================================================*\
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\*===========================================================================*/
 
 
 
//=============================================================================
//
//  MyTypes
//
//=============================================================================
 
#define POLYLINEOBJECT_C
 
//== INCLUDES =================================================================
 
#include <OpenFlipper/common/Types.hh>
#include "PolyLine.hh"
 
//== DEFINES ==================================================================
 
//== TYPEDEFS =================================================================
 
//== CLASS DEFINITION =========================================================
 
PolyLineObject::PolyLineObject() :
  BaseObjectData( ),
  line_(nullptr),
  lineNode_(nullptr)
{
  setDataType(DATA_POLY_LINE);
  init();
}
 
//=============================================================================
 
 
PolyLineObject::PolyLineObject(const PolyLineObject & _object) :
  BaseObjectData(_object)
{
 
    init(_object.line_);
 
    setName( name() );
}
 
PolyLineObject::~PolyLineObject()
{
  // Delete the data attached to this object ( this will remove all perObject data)
  // Not the best way to do it but it will work.
  // This is only necessary if people use references to the line below and
  // they do something with the polyline in the destructor of their
  // perObjectData.
  deleteData();
 
  // Delete the Mesh only, if this object contains a mesh
  if ( line_ != nullptr)  {
    delete line_;
    line_ = nullptr;
  } else {
    std::cerr << "Destructor error : Line already deleted" << std::endl;
  }
 
  // No need to delete the scenegraph Nodes as this will be managed by baseplugin
  lineNode_    = nullptr;
}
 
void PolyLineObject::cleanup() {
  // Delete the Line only, if this object contains a line
  if ( line_ != nullptr)  {
    delete line_;
    line_ = nullptr;
  } else {
    std::cerr << "Cleanup error : Line already deleted" << std::endl;
  }
 
  BaseObjectData::cleanup();
 
  lineNode_   = nullptr;
 
  setDataType(DATA_POLY_LINE);
 
  init();
 
}
 
BaseObject* PolyLineObject::copy() {
    PolyLineObject* object = new PolyLineObject(*this);
    return dynamic_cast< BaseObject* >(object);
}
 
void PolyLineObject::init(PolyLine* _line) {
 
  if (_line == 0)
    line_ = new PolyLine();
  else
    line_ = new PolyLine(*_line);
 
  // request default properties
  line()->request_vertex_selections();
  line()->request_edge_selections();
  line()->request_vertex_vhandles();
  line()->request_vertex_ehandles();
  line()->request_vertex_fhandles();
 
 
  if ( materialNode() == nullptr)
    std::cerr << "Error when creating Line Object! materialNode is nullptr!" << std::endl;
 
  lineNode_    = new ACG::SceneGraph::PolyLineNodeT< PolyLine >(*line_, materialNode() , "NEW LineNode");
  
  // Set default material of the polyLine
  materialNode()->set_random_color();
  materialNode()->set_line_width(3.0);
  materialNode()->set_point_size(8.0);
  materialNode()->set_round_points(true);
 
}
 
// ===============================================================================
// Name/Path Handling
// ===============================================================================
 
void PolyLineObject::setName( QString _name ) {
  BaseObjectData::setName(_name);
 
  std::string nodename = std::string("LineNode for Line "     + _name.toUtf8() );
  lineNode_->name( nodename );
}
 
// ===============================================================================
// Content
// ===============================================================================
 
PolyLine* PolyLineObject::line() {
  return line_;
}
 
 
void PolyLineObject::update(UpdateType _type) {
  lineNode_->update();
}
 
// ===============================================================================
// Visualization
// ===============================================================================
 
ACG::SceneGraph::PolyLineNodeT< PolyLine >* PolyLineObject::lineNode() {
  return lineNode_;
}
 
// ===============================================================================
// Object information
// ===============================================================================
 
QString PolyLineObject::getObjectinfo() {
  QString output;
 
  output += "========================================================================\n";
  output += BaseObjectData::getObjectinfo();
 
  if ( dataType( DATA_POLY_LINE ) )
    output += "Object Contains PolyLine : ";
 
  output += QString::number( line()->n_vertices() ) + " vertices, ";
  output += QString::number( line()->n_edges() ) += " edges and is ";
  if ( line()->is_closed() )
    output += "closed.\n";
  else
    output += "open.\n";
 
  output += "========================================================================\n";
  return output;
}
 
// ===============================================================================
// Picking
// ===============================================================================
 
bool PolyLineObject::picked( uint _node_idx ) {
  return ( _node_idx == lineNode_->id() );
}
 
void PolyLineObject::enablePicking( bool _enable ) {
  lineNode_->enablePicking( _enable );
}
 
bool PolyLineObject::pickingEnabled() {
  return lineNode_->pickingEnabled();
}
 
ACG::Vec3d PolyLineObject::refinePick(ACG::SceneGraph::PickTarget _pickTarget,
                             const ACG::Vec3d _hitPoint,
                             const ACG::Vec3d _start ,
                             const ACG::Vec3d _dir,
                             const unsigned int _targetIdx )
{
  if ( _pickTarget == ACG::SceneGraph::PICK_FACE) {
    //don't refine polyLine faces
    return _hitPoint;
  }
 
  if ( _pickTarget == ACG::SceneGraph::PICK_EDGE) {
    // get picked edge handle
 
    int eh;
 
      eh = _targetIdx;
 
 
    if(eh >= 0 && eh < (int)line()->n_edges())
    {
      //get vertices of the edge
      ACG::Vec3d edgeStart = line()->point((eh+1)%line()->n_vertices());
      ACG::Vec3d edgeEnd = line()->point(eh);
 
      //retrieve the point on the edge that is closest to the backprojected hitpoint
      ACG::Vec3d hitPointNew;
      ACG::Geometry::distPointLineSquared(_hitPoint,edgeStart,edgeEnd,&hitPointNew);
 
 
      return hitPointNew;
    }
  }
 
  if ( _pickTarget == ACG::SceneGraph::PICK_VERTEX) {
    // get picked vertex handle
    int vh = _targetIdx;
    if(vh>=0 && vh < (int)line()->n_vertices())
    {
      ACG::Vec3d hitpointNew = line()->point(vh);
 
      //just return the vertex position
      return hitpointNew;
    }
  }
 
  return _hitPoint;
}
 
//=============================================================================