readerwriterq3bsp.cpp

最新osg包

            }
        }
      

    }


  //int num_primitive_sets=geom->getNumPrimitiveSets();
  //const osg::BoundingSphere& bs=map_geom->getBound();


  map_geode->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);


  return map_geode;
}



osg::Geometry* ReaderWriterQ3BSP::createMeshFace( const BSP_LOAD_FACE& aLoadFace,const std::vector<osg::Texture2D*>& aTextureArray,
                                                  osg::Vec3Array& aVertexArray,std::vector<GLuint>& aIndices,
                                                  osg::Vec2Array& aTextureDecalCoords,osg::Vec2Array& aTextureLMapCoords
                                                ) const
{

  osg::Geometry* obj_geom = new osg::Geometry;


  osg::Vec3Array* obj_vertex_array = new osg::Vec3Array(aLoadFace.m_numMeshIndices,
                                                        &(aVertexArray)[aLoadFace.m_firstVertexIndex]
                                                        );
  obj_geom->setVertexArray(obj_vertex_array);

  osg::DrawElementsUInt* face_indices = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES,
                                                  aLoadFace.m_numMeshIndices,
                                                  &(aIndices)[0]+aLoadFace.m_firstMeshIndex
                                                  );

  obj_geom->addPrimitiveSet(face_indices);

  osg::Texture2D *texture=aTextureArray[aLoadFace.m_texture];
  if(texture)
    {
      osg::StateSet* stateset = obj_geom->getOrCreateStateSet();
      stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
      stateset->setTextureAttributeAndModes(1,texture,osg::StateAttribute::ON);

      osg::Vec2Array* obj_texcoords_array = new osg::Vec2Array(aLoadFace.m_numMeshIndices,
                                                        &(aTextureDecalCoords)[aLoadFace.m_firstVertexIndex]
                                                        );
      obj_geom->setTexCoordArray(0,obj_texcoords_array);

      osg::Vec2Array* obj_lmapcoords_array = new osg::Vec2Array(aLoadFace.m_numMeshIndices,
                                                        &(aTextureLMapCoords)[aLoadFace.m_firstVertexIndex]
                                                        );
      obj_geom->setTexCoordArray(1,obj_lmapcoords_array);
    }

  return obj_geom;
     

}







osg::Geometry* ReaderWriterQ3BSP::createPolygonFace(const BSP_LOAD_FACE& aLoadFace,const std::vector<osg::Texture2D*>& aTextureArray,const std::vector<osg::Texture2D*>& aTextureLMapArray,
                                  osg::Vec3Array& aVertexArray,
                                  osg::Vec2Array& aTextureDecalCoords,osg::Vec2Array& aTextureLMapCoords
                                 ) const
{
  osg::Texture2D *texture=aTextureArray[aLoadFace.m_texture];

  osg::Geometry* polygon_geom = new osg::Geometry;
  polygon_geom->setVertexArray(&aVertexArray);
  polygon_geom->setTexCoordArray(0, &aTextureDecalCoords);
  polygon_geom->setTexCoordArray(1, &aTextureLMapCoords);

  osg::DrawArrays* face_indices = new osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_FAN,
                                                      aLoadFace.m_firstVertexIndex,
                                                      aLoadFace.m_numVertices
                                                     );

  osg::StateSet* stateset = polygon_geom->getOrCreateStateSet();
  if(texture)
    {
      stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
      if(aLoadFace.m_lightmapIndex>=0)
        {
          texture=aTextureLMapArray[aLoadFace.m_lightmapIndex];
          if(texture)
            {
              stateset->setTextureAttributeAndModes(1,texture,osg::StateAttribute::ON);
            }
        }
      else
        {
          texture=aTextureLMapArray[aTextureLMapArray.size()-1];
          if(texture)
            {
              stateset->setTextureAttributeAndModes(1,texture,osg::StateAttribute::ON);
            }
        }

    }
  else
    {
      osg::PolygonMode* polygon_mode=new osg::PolygonMode;
      polygon_mode->setMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE);
      stateset->setAttributeAndModes(polygon_mode, osg::StateAttribute::ON);
    }

  polygon_geom->addPrimitiveSet(face_indices);
  return polygon_geom;
}












bool ReaderWriterQ3BSP::loadTextures(const BSPLoad& aLoadData,std::vector<osg::Texture2D*>& aTextureArray) const
{
  int num_textures=aLoadData.m_loadTextures.size();

  int i;
  for(i=0;i<num_textures;i++)
    {
      //add file extension to the name
      std::string tgaExtendedName(aLoadData.m_loadTextures[i].m_name);
      tgaExtendedName+=".tga";
      std::string jpgExtendedName(aLoadData.m_loadTextures[i].m_name);
      jpgExtendedName+=".jpg";

      osg::Image* image = osgDB::readImageFile(tgaExtendedName);
      if (!image)
        {
          image = osgDB::readImageFile(jpgExtendedName);
          if (!image)
            {
              aTextureArray.push_back(NULL);
              continue; //?
            }
        }

      osg::Texture2D* texture= new osg::Texture2D;
      texture->setImage(image);
      texture->setDataVariance(osg::Object::DYNAMIC); // protect from being optimized away as static state.
      texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture2D::REPEAT);
      texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::REPEAT);
      aTextureArray.push_back(texture);
    }

  return true;
}





bool ReaderWriterQ3BSP::loadLightMaps(const BSPLoad& aLoadData,std::vector<osg::Texture2D*>& aTextureArray) const
{
  int num_textures=aLoadData.m_loadLightmaps.size();

  int i;
  for(i=0;i<num_textures;i++)
    {
      osg::Image* image=new osg::Image;

      unsigned char *data=new unsigned char[128*128*3];
      memcpy(data,aLoadData.m_loadLightmaps[i].m_lightmapData,128*128*3);

      image->setImage(128,128,1,GL_RGBA8,GL_RGB,GL_UNSIGNED_BYTE,data,osg::Image::USE_NEW_DELETE);

      osg::Texture2D* texture= new osg::Texture2D;
      texture->setImage(image);
      texture->setDataVariance(osg::Object::DYNAMIC); // protect from being optimized away as static state.
      texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR_MIPMAP_LINEAR);
      texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
      texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture2D::REPEAT);
      texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::REPEAT);
      aTextureArray.push_back(texture);
    }



  // A continuaci髇, a馻do el blanco
  osg::Image* image=new osg::Image;
  unsigned char *data=new unsigned char[3];
  for(int whiteidx=0;whiteidx<3;whiteidx++)
  {
      data[whiteidx]=255;
  }

  image->setImage(1,1,1,GL_RGBA8,GL_RGB,GL_UNSIGNED_BYTE,data,osg::Image::USE_NEW_DELETE);

  osg::Texture2D* texture= new osg::Texture2D;
  texture->setImage(image);
  texture->setDataVariance(osg::Object::DYNAMIC); // protect from being optimized away as static state.
  texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR_MIPMAP_LINEAR);
  texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
  texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture2D::REPEAT);
  texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::REPEAT);
  aTextureArray.push_back(texture);


  return true;
}


//Tessellate a biquadratic patch
bool BSP_BIQUADRATIC_PATCH::Tessellate(int newTessellation,osg::Geometry* aGeometry)
{
    m_tessellation=newTessellation;

    float px, py;
    BSP_VERTEX temp[3];
    m_vertices.resize((m_tessellation+1)*(m_tessellation+1));

    for(int v=0; v<=m_tessellation; ++v)
      {
        px=(float)v/m_tessellation;

        m_vertices[v]=m_controlPoints[0]*((1.0f-px)*(1.0f-px))+
                      m_controlPoints[3]*((1.0f-px)*px*2)+
                      m_controlPoints[6]*(px*px);
      }

    for(int u=1; u<=m_tessellation; ++u)
      {
        py=(float)u/m_tessellation;

        temp[0]=m_controlPoints[0]*((1.0f-py)*(1.0f-py))+
                m_controlPoints[1]*((1.0f-py)*py*2)+
                m_controlPoints[2]*(py*py);

        temp[1]=m_controlPoints[3]*((1.0f-py)*(1.0f-py))+
                m_controlPoints[4]*((1.0f-py)*py*2)+
                m_controlPoints[5]*(py*py);

        temp[2]=m_controlPoints[6]*((1.0f-py)*(1.0f-py))+
                m_controlPoints[7]*((1.0f-py)*py*2)+
                m_controlPoints[8]*(py*py);

        for(int v=0; v<=m_tessellation; ++v)
          {
            px=(float)v/m_tessellation;

            m_vertices[u*(m_tessellation+1)+v]=temp[0]*((1.0f-px)*(1.0f-px))+
                                              temp[1]*((1.0f-px)*px*2)+
                                              temp[2]*(px*px);
          }
      }

    //Create indices
    m_indices.resize(m_tessellation*(m_tessellation+1)*2);

    int row;
    for(row=0; row<m_tessellation; ++row)
      {
        for(int point=0; point<=m_tessellation; ++point)
          {
            //calculate indices
            //reverse them to reverse winding
            m_indices[(row*(m_tessellation+1)+point)*2+1]= row*(m_tessellation+1)+point;
            m_indices[(row*(m_tessellation+1)+point)*2]=  (row+1)*(m_tessellation+1)+point;
          }
      }


    //Fill in the arrays for multi_draw_arrays
    m_trianglesPerRow.resize(m_tessellation);
    m_rowIndexPointers.resize(m_tessellation);

    for(row=0; row<m_tessellation; ++row)
      {
        m_trianglesPerRow[row]=2*(m_tessellation+1);
        m_rowIndexPointers[row]=&m_indices[row*2*(m_tessellation+1)];
      }


    osg::Vec3Array* patch_vertex_array = new osg::Vec3Array( (m_tessellation+1)*(m_tessellation+1) );
    osg::Vec2Array* patch_textcoord_array = new osg::Vec2Array( (m_tessellation+1)*(m_tessellation+1) );
    osg::Vec2Array* patch_lmapcoord_array = new osg::Vec2Array( (m_tessellation+1)*(m_tessellation+1) );
    for(int i=0;i<(m_tessellation+1)*(m_tessellation+1);i++)
      {
        (*patch_vertex_array)[i].set( m_vertices[ i ].m_position[0],
                                      m_vertices[ i ].m_position[1],
                                      m_vertices[ i ].m_position[2]
                                    );

        (*patch_textcoord_array)[i].set( m_vertices[ i ].m_decalS,
                                         m_vertices[ i ].m_decalT
                                       );

        (*patch_lmapcoord_array)[i].set( m_vertices[ i ].m_lightmapS,
                                         m_vertices[ i ].m_lightmapT
                                       );


      }
    aGeometry->setVertexArray(patch_vertex_array);
    aGeometry->setTexCoordArray(0,patch_textcoord_array);
    aGeometry->setTexCoordArray(1,patch_lmapcoord_array);


    for(row=0; row<m_tessellation; ++row)
      {
        osg::DrawElementsUInt* face_indices = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLE_STRIP,
                                                        m_tessellation*(m_tessellation+1)*2,
                                                        &m_indices[0]
                                                        );
        aGeometry->addPrimitiveSet(face_indices);

      }



    return true;
}