CoordinateSystemNode.cc

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//=============================================================================
//
//  CLASS CoordsysNode - IMPLEMENTATION
//
//=============================================================================

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

#include <ObjectTypes/Coordsys/CoordinateSystemNode.hh>



//== NAMESPACES ===============================================================

namespace ACG {
namespace SceneGraph {


//== IMPLEMENTATION ==========================================================


CoordinateSystemNode::CoordinateSystemNode( BaseNode*    _parent,
                                            std::string  _name)
      : BaseNode(_parent, _name),
        coordsysSize_(1.0),
        slices_(10),
        stacks_(10),
        loops_(10)
{
  rotation_.identity();
  sphere_ = new GLSphere(slices_, stacks_);
  cone_ = new GLCone(slices_, stacks_, 1.0f, 1.0f, false, true);
  cylinder_ = new GLCylinder(slices_, stacks_, 1.0f, false, false);
  disk_ = new GLDisk(slices_, loops_, 0.1f, 1.0f);
}

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

CoordinateSystemNode::~CoordinateSystemNode() {
  if (sphere_)
    delete sphere_;

  if (cone_)
    delete cone_;

  if (cylinder_)
    delete cylinder_;

  if (disk_)
    delete disk_;
}

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

void
CoordinateSystemNode::
boundingBox(Vec3d& _bbMin, Vec3d& _bbMax)
{
  //TODO!!
  Vec3d topLeft = position_ + coordsysSize_ * ACG::Vec3d(1.0,1.0,1.0);

        _bbMin.minimize( topLeft  );
        _bbMin.minimize( position_  );

        _bbMax.maximize( topLeft  );
        _bbMax.maximize( position_  );

}


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


DrawModes::DrawMode
CoordinateSystemNode::
availableDrawModes() const
{
  return ( DrawModes::SOLID_SMOOTH_SHADED );
}


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

void
CoordinateSystemNode::
drawCoordsys( GLState&  _state) {

  double topRadius   = 0.1  * coordsysSize_;
  double arrowLength = 0.4  * coordsysSize_;
  double bodyRadius  = 0.04 * coordsysSize_;
  double bodyLength  = 0.6  * coordsysSize_;
  double sphereRadius = 0.1 * coordsysSize_;

  // Origin
  glColor3f(0.5, 0.5, 0.5);
  sphere_->draw(_state, sphereRadius);
  
  // X-Axis
  glColor3f(1.0, 0.0, 0.0);
  _state.push_modelview_matrix ();
  _state.rotate (-90, 0, 1, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->setBottomRadius(bodyRadius);
  cylinder_->setTopRadius(bodyRadius);
  cylinder_->draw(_state, bodyLength);
  disk_->setInnerRadius(0.0f);
  disk_->setOuterRadius(topRadius);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->setBottomRadius(0.0f);
  cone_->setTopRadius(topRadius);
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();

  // Y-Axis
  glColor3f(0.0, 1.0, 0.0);
  _state.push_modelview_matrix ();
  _state.rotate (90, 1, 0, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->draw(_state, bodyLength);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();

  // Z-Axis
  glColor3f(0.0, 0.0, 1.0);
  _state.push_modelview_matrix ();
  _state.rotate (180, 0, 1, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->draw(_state, bodyLength);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();
}

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


void
CoordinateSystemNode::drawCoordsysPick( GLState&  _state) {

  double topRadius   = 0.1  * coordsysSize_;
  double arrowLength = 0.4  * coordsysSize_;
  double bodyRadius  = 0.04 * coordsysSize_;
  double bodyLength  = 0.6  * coordsysSize_;
  double sphereRadius = 0.1 * coordsysSize_;

  // Origin
  _state.pick_set_name (1);
  sphere_->draw(_state, sphereRadius);

  // X-Axis
  _state.pick_set_name (2);
  _state.push_modelview_matrix ();
  _state.rotate (-90, 0, 1, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->setBottomRadius(bodyRadius);
  cylinder_->setTopRadius(bodyRadius);
  cylinder_->draw(_state, bodyLength);
  disk_->setInnerRadius(0.0f);
  disk_->setOuterRadius(topRadius);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->setBottomRadius(0.0f);
  cone_->setTopRadius(topRadius);
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();

  // Y-Axis
  _state.pick_set_name (3);
  _state.push_modelview_matrix ();
  _state.rotate (90, 1, 0, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->draw(_state, bodyLength);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();

  // Z-Axis
  _state.pick_set_name (4);
  _state.push_modelview_matrix ();
  _state.rotate (180, 0, 1, 0);
  _state.translate ( 0, 0, -bodyLength );
  cylinder_->draw(_state, bodyLength);
  disk_->draw(_state);
  _state.translate ( 0, 0, -arrowLength );
  cone_->draw(_state, arrowLength);
  _state.pop_modelview_matrix ();
}


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


void
CoordinateSystemNode::
draw(GLState&  _state  , const DrawModes::DrawMode& /*_drawMode*/)
{
  glPushAttrib(GL_ENABLE_BIT);

  // Push Modelview-Matrix
  _state.push_modelview_matrix();

  Vec4f lastBaseColor = _state.base_color();

  glColorMaterial ( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE ) ;
  ACG::GLState::enable(GL_COLOR_MATERIAL);
  ACG::GLState::enable(GL_LIGHTING);
  ACG::GLState::shadeModel(GL_SMOOTH);

  // Translate to right position  
  _state.translate(position_);

  // Apply rotation matrix
  GLMatrixd modelview = _state.modelview();     
  modelview *= rotation_;
  _state.set_modelview(modelview);

  // Draw coordsys
  drawCoordsys(_state);

  glColor4fv(lastBaseColor.data());

  // Reload old configuration
  _state.pop_modelview_matrix();

  glPopAttrib();
}


void
CoordinateSystemNode::
position(const Vec3d& _pos)
{
  position_ = _pos;
}


Vec3d
CoordinateSystemNode::
position() {
  return position_;
}

void CoordinateSystemNode::rotation(const Matrix4x4d & _rotation)
{
  rotation_ = _rotation;
}

Matrix4x4d CoordinateSystemNode::rotation()
{
  return rotation_;
} 


void
CoordinateSystemNode::
size(const double _size) {
  coordsysSize_ = _size;
}

double
CoordinateSystemNode::
size() {
  return coordsysSize_;
}


void
CoordinateSystemNode::pick(GLState& _state, PickTarget _target)
{

    
  if (_target == PICK_ANYTHING) {

    _state.pick_set_maximum(5);
    _state.pick_set_name(0);

    // Push Modelview-Matrix
    _state.push_modelview_matrix();

    // Translate to right position  
    _state.translate(position_);

    // Apply rotation matrix
    GLMatrixd modelview = _state.modelview(); 
    modelview *= rotation_;
    _state.set_modelview(modelview);    

    // Koordinatensystem zeichnen
    drawCoordsysPick(_state);

     // Reload old configuration
    _state.pop_modelview_matrix();

  }
}


//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================