/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLGeom/src/ICLGeom/GridSceneObject.cpp                **
** Module : ICLGeom                                                **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#include <ICLGeom/GridSceneObject.h>

using namespace icl::utils;
using namespace icl::core;
using namespace icl::math;
using namespace icl::qt;

namespace icl{
  namespace geom{
    void GridSceneObject::init(int nXCells, int nYCells, const std::vector<Vec> &allGridPoints, bool lines, bool quads) throw (ICLException){
      this->nXCells = nXCells;
      this->nYCells = nYCells;
      
      ICLASSERT_THROW((int)allGridPoints.size() == nXCells*nYCells,
                      ICLException("GridSceneObject::Constructor: nXCells*nYCells differs from allGridPoints.size()!"));
      for(int i=0;i<nXCells*nYCells;++i){
        addVertex(allGridPoints[i]);
        m_vertices.back()[3]=1;
      }
      for(int x=1;x<nXCells;++x){
        for(int y=1;y<nYCells;++y){
          int a = getIdx(x,y);
          int b = getIdx(x-1,y);
          int c = getIdx(x,y-1);
          int d = getIdx(x-1,y-1);
          if(lines) {
            addLine(a,b);
              addLine(a,c);
          }
          if(quads){
            addQuad(a,b,d,c);
          }
        }
      }
      for(int x=1;x<nXCells;++x){
        if(lines) addLine(getIdx(x,0),getIdx(x-1,0));
      }
      for(int y=1;y<nYCells;++y){
        if(lines) addLine(getIdx(0,y),getIdx(0,y-1));
      }
    }
  
    GridSceneObject::GridSceneObject(int nXCells, int nYCells, const std::vector<Vec> &allGridPoints,
                                     bool lines, bool quads) throw (ICLException){
      init(nXCells,nYCells,allGridPoints,lines,quads);
    }
      
    GridSceneObject::GridSceneObject(int nXCells, int nYCells, const Vec &origin, const Vec &dx, const Vec &dy,
                                     bool lines, bool quads)throw (ICLException){
      std::vector<Vec> allGridPoints; 
      allGridPoints.reserve(nXCells*nYCells);
      for(int y=0;y<nYCells;++y){
        for(int x=0;x<nXCells;++x){
          allGridPoints.push_back(origin+dx*float(x)+dy*float(y));
        }
      }
      init(nXCells,nYCells,allGridPoints,lines,quads);
    }
  
    
  
  } // namespace geom
}