BSplineSurfaceObject.cc

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//=============================================================================
//
// BSplineSurface object type - Implementation
// Author:  Ellen Dekkers <dekkers@cs.rwth-aachen.de>
//
//=============================================================================


#define BSPLINESURFACEOBJECT_C


//== INCLUDES =================================================================

#include <OpenFlipper/common/GlobalOptions.hh>
#include <OpenFlipper/common/Types.hh>
#include "BSplineSurface.hh"

//== DEFINES ==================================================================

//== TYPEDEFS =================================================================

//== CLASS DEFINITION =========================================================

BSplineSurfaceObject::BSplineSurfaceObject() :
  BaseObjectData(),
  splineSurface_(NULL),
  splineSurfaceNode_(NULL),
  shaderNode_(0),
  textureNode_(0)

{
  setDataType(DATA_BSPLINE_SURFACE);
  init();
}

//-----------------------------------------------------------------------------

BSplineSurfaceObject::BSplineSurfaceObject(const BSplineSurfaceObject & _object) :
    BaseObjectData(_object)
{
  init(_object.splineSurface_);
  setName( name() );
}

//-----------------------------------------------------------------------------

BSplineSurfaceObject::~BSplineSurfaceObject()
{
  // 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 curve below and
  // they do something with the splineCurve in the destructor of their
  // perObjectData.
  deleteData();

  // Delete the Mesh only, if this object contains a mesh
  if ( splineSurface_ != NULL)  {
    delete splineSurface_;
    splineSurface_ = NULL;
  } else {
    std::cerr << "Destructor error : Spline surface already deleted" << std::endl;
  }

  // No need to delete the scenegraph Nodes as this will be managed by baseplugin
  splineSurfaceNode_ = NULL;
  textureNode_       = 0;
  shaderNode_        = 0;
}

//-----------------------------------------------------------------------------

void BSplineSurfaceObject::cleanup() {
  // Delete the spline surface only, if this object contains a surface
  if ( splineSurface_ != NULL)  {
    delete splineSurface_;
    splineSurface_ = NULL;
  } else {
    std::cerr << "Cleanup error : Spline surface already deleted" << std::endl;
  }

  BaseObjectData::cleanup();

  splineSurfaceNode_ = NULL;
  textureNode_       = 0;
  shaderNode_        = 0;

  setDataType(DATA_BSPLINE_SURFACE);

  init();
}

//-----------------------------------------------------------------------------

BaseObject* BSplineSurfaceObject::copy()
{
  BSplineSurfaceObject* object = new BSplineSurfaceObject(*this);
  return dynamic_cast< BaseObject* >(object);
}

//-----------------------------------------------------------------------------

void BSplineSurfaceObject::init(BSplineSurface* _surface) {

  if (_surface == 0)
    splineSurface_ = new BSplineSurface();
  else
    splineSurface_ = new BSplineSurface(*_surface);

  // request default properties
  splineSurface()->request_controlpoint_selections();
  splineSurface()->request_edge_selections();
  // request selection property for both knotvectors
  splineSurface()->get_knotvector_m_ref()->request_selections();
  splineSurface()->get_knotvector_n_ref()->request_selections();

  if ( materialNode() == NULL)
    std::cerr << "Error when creating BSplineSurface Object! materialNode is NULL!" << std::endl;

  textureNode_       = new ACG::SceneGraph::EnvMapNode(materialNode(),"NEW TextureNode for ", true, GL_LINEAR_MIPMAP_LINEAR );
  shaderNode_        = new ACG::SceneGraph::ShaderNode(textureNode_ , "NEW ShaderNode for ");
  splineSurfaceNode_ = new ACG::SceneGraph::BSplineSurfaceNodeT< BSplineSurface >(*splineSurface_, shaderNode_ , "NEW BSplineSurfaceNode");

//   shaderNode_        = new ACG::SceneGraph::ShaderNode(materialNode() , "NEW ShaderNode for ");
//   splineSurfaceNode_ = new ACG::SceneGraph::BSplineSurfaceNodeT< BSplineSurface >(*splineSurface_, shaderNode_ , "NEW BSplineSurfaceNode");

  QString shaderDir = OpenFlipper::Options::shaderDirStr() +
                      OpenFlipper::Options::dirSeparator();

  std::string shaderDirectory = std::string( shaderDir.toUtf8() );
  shaderNode_->setShaderDir( shaderDirectory );
}

// ===============================================================================
// Name/Path Handling
// ===============================================================================

void BSplineSurfaceObject::setName( QString _name ) {
  BaseObjectData::setName(_name);

  std::string nodename = std::string("BSplineSurfaceNode for BSpline surface " + _name.toUtf8() );
  splineSurfaceNode_->name( nodename );

  nodename = std::string("TextureNode for BSpline surface " + _name.toUtf8() );
  textureNode_->name( nodename );

  nodename = std::string("ShaderNode for BSpline surface " + _name.toUtf8() );
  shaderNode_->name( nodename );
}

// ===============================================================================
// Content
// ===============================================================================

BSplineSurface* BSplineSurfaceObject::splineSurface() {
  return splineSurface_;
}

//-----------------------------------------------------------------------------

void 
BSplineSurfaceObject::
update(UpdateType _type)
{
  if ( _type.contains(UPDATE_ALL))
  {
    // mark textures as invalid
    splineSurfaceNode()->cpSelectionTextureValid(false);
    splineSurfaceNode()->knotSelectionTextureValid(false);

    splineSurfaceNode()->updateGeometry();

    if (textureNode())
      splineSurfaceNode()->set_arb_texture(textureNode()->activeTexture());
  }
  else 
  {
    if (_type.contains(UPDATE_GEOMETRY) || _type.contains(UPDATE_SELECTION)) 
    {
      // mark textures as invalid
      splineSurfaceNode()->cpSelectionTextureValid(false);
      splineSurfaceNode()->knotSelectionTextureValid(false);

      if (_type.contains(UPDATE_GEOMETRY))
        splineSurfaceNode()->updateGeometry();
    }
    else if (_type.contains(UPDATE_SELECTION_VERTICES))
      splineSurfaceNode()->cpSelectionTextureValid(false);
    else if (_type.contains(UPDATE_SELECTION_KNOTS))
      splineSurfaceNode()->knotSelectionTextureValid(false);
    if (_type.contains(UPDATE_TEXTURE) && textureNode())
      splineSurfaceNode()->set_arb_texture(textureNode()->activeTexture());

  }
}

// ===============================================================================
// Visualization
// ===============================================================================

ACG::SceneGraph::BSplineSurfaceNodeT< BSplineSurface >* BSplineSurfaceObject::splineSurfaceNode() {
  return splineSurfaceNode_;
}


ACG::SceneGraph::ShaderNode * BSplineSurfaceObject::shaderNode() {
  return shaderNode_;
}


ACG::SceneGraph::EnvMapNode* BSplineSurfaceObject::textureNode() {
  return textureNode_;
}

// ===============================================================================
// Object information
// ===============================================================================

QString BSplineSurfaceObject::getObjectinfo() {
  QString output;

  output += "========================================================================\n";
  output += BaseObjectData::getObjectinfo();

  if ( dataType( DATA_BSPLINE_SURFACE ) )
    output += "Object Contains BSpline Surface : ";
  else{
    output += "Error: Object Contains NO BSpline Surface!";
    output += "========================================================================\n";
    return output;
  }

  output += QString::number( splineSurface()->n_control_points_m() ) + " control points in m direction, ";
  output += QString::number( splineSurface()->n_control_points_n() ) + " control points in n direction, ";
  output += QString::number( splineSurface()->n_knots_m() ) += " knots in m direction";
  output += QString::number( splineSurface()->n_knots_n() ) += " knots in n direction.\n";

  output += "========================================================================\n";
  return output;
}

// ===============================================================================
// Picking
// ===============================================================================

bool BSplineSurfaceObject::picked( uint _node_idx ) {
  return ( _node_idx == splineSurfaceNode_->id() );
}

//-----------------------------------------------------------------------------

void BSplineSurfaceObject::enablePicking( bool _enable ) {
  splineSurfaceNode_->enablePicking( _enable );
  textureNode_->enablePicking( _enable );
  shaderNode_->enablePicking( _enable );
}

//-----------------------------------------------------------------------------

bool BSplineSurfaceObject::pickingEnabled() {
  return splineSurfaceNode_->pickingEnabled();
}

//=============================================================================
//=============================================================================