#include <iclImageSplitter.h>
#include <math.h>

using std::vector;

namespace icl{
  
  //      10------------------------50
  //n=4   10     20     30    40    50
  //
  
  void ImageSplitter::splitImage(ImgBase *src, vector<ImgBase*> &parts){
    Rect r = src->getROI();
    int n = (int)parts.size();
    ICLASSERT_RETURN(n);
    ICLASSERT_RETURN(r.getDim());
    ICLASSERT_RETURN(r.height >= n);
    
    float dh = float(r.height)/n;
    for(int i=0;i<n;++i){
      int yStart = r.y+(int)round(dh*i);
      int yEnd = r.y+(int)round(dh*(i+1));
      int dy = yEnd - yStart;
      parts[i] = src->shallowCopy(Rect(r.x,yStart,r.width,dy));
    }      
  }
  
  
  
  std::vector<ImgBase*> ImageSplitter::split(ImgBase *src, int nParts){
    std::vector<ImgBase*> v(nParts,(ImgBase*)0);
    splitImage(src,v);
    return v;
  }
  
  const std::vector<ImgBase*> ImageSplitter::split(const ImgBase *src, int nParts){
    ImgBase *srcX = const_cast<ImgBase*>(src);
    std::vector<ImgBase*> v= split(srcX,nParts);
    return v;
  }
  
  void ImageSplitter::release(const std::vector<ImgBase*> &v){
    for(unsigned int i=0;i<v.size();i++){
      delete v[i];
    }
  }
    
}