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glModel.H

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#ifndef _GLMODEL_H
#define _GLMODEL_H

#include <Menu.H>
#include <wrapGL.H>
#include <Model.H>
#include <UserInterface.H>
#include <Picking.H>
#include <string>
#include <vector>

namespace xchen
{
  class View;

  class glModel
  {
      enum { MAX_GL_MODELS = 1000 };
      static glModel* glModels[MAX_GL_MODELS];
  public:
      static glModel* Get_glModel(int id)                    { return glModels[id]; }
  public:
      glModel(View* v, Model* m = 0);
      ~glModel();

      int ReadModel(const string& file);                       // return 1 if error, 0 otherwise.
      //      void SetModel(Model* m)                                  { delete model; model = m; generateUI(); }

      UI& GetUI()                        { return  *ui; }
      void Draw() const;                                       // draw model, and related entity if its ctrl-bvar is on.

      dVector3D GetOrthographicVisualRay() const;              // may differ from that got from View, due to model transform.

  private:
      Model* model;
      static int cur_id;                                       // for open GL selection mode. starts with 1.
      int id;
      bool isSelected() const                                  { return UI::GetSelectedModel() == id; }

      View* view;
      UI* ui;

  private:
      int assign_glModel_id();
      void generateUI();
      void transform();

      static void del_selected_cb(ConvertedKeyValue, int, int)   { delete  Get_glModel( UI::GetSelectedModel() ); }
  
  private:
      enum PrimitiveModel { _Sphere, _Cube, _Torus, _Cone, _Teapot }; // The same user interface as open file.
      static const int num_primitives = 5;
      static string primitive2str[num_primitives];

      static void RegisterPrimitives( vector<string>& filenames ) 
      {
        for(int i=0; i<num_primitives; i++) 
          filenames.push_back( primitive2str[i] );
      }

      friend ostream& operator<<(ostream& os, const glModel& m);
      friend ostream& operator<<(ostream& os, const glModel* m) { return os << (*m); }
  };



  inline void glModel :: transform()
  {
    wglTranslate(ui->GetTranslate());
    glMultMatrixd(ui->GetRotateTransform().GetGLMatrix());
  }
 
}

#endif

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