NrroImage.cpp

Go to the documentation of this file.

//------------------------------------------------------------------------
//
//   Joe Kniss
//     6-20-03
//                   ________    ____   ___ 
//                  |        \  /    | /  /
//                  +---+     \/     |/  /
//                  +--+|  |\    /|     < 
//                  |  ||  | \  / |  |\  \ 
//                  |      |  \/  |  | \  \ 
//                   \_____|      |__|  \__\
//                       Copyright  2003 
//                      Joe Michael Kniss
//                   <<< jmk@cs.utah.edu >>>
//               "All Your Base are Belong to Us"
//-------------------------------------------------------------------------

/// NrroImage.cpp
///  simianUI

#include "NrroImage.h"
#include <iostream>
#include <qstring.h>
#include <qcolor.h>

using namespace std;
using namespace gutz;

//////////////////////////////////////////////////////////////////////////
/// Factory Nrro -> QImage
//////////////////////////////////////////////////////////////////////////

QImage *genNrroQImage(const NrroSP n, const vec2d minmax)
{
   /// no nrro
   if(n.isNull())
   {
      cerr << "genNrroQImage(), null nrro!!" << endl;
      return new QImage();
   }
   /// not an image
   if(Nrro::IMAGE != n->getKind())
   {
      cerr << "genNrroQImage(), kind not image!" << endl;
      return new QImage();
   }
   /// is a time series
   if((n->getKind() & Nrro::TIME_SERIES)) 
   {
      cerr << "genNrroQImage(), cant handle time series images" << endl;
      return new QImage();
   }

   /// copy cuz were going to mess with it some
   NrroSP imgData = new Nrro(*n);

   /// better be multi-channel, easier this way!!!
   if(n->dim() != 3)
      imgData->forceMultiChannel();

   imgData->quantize(8, minmax.x, minmax.y);   

   Nrro::NrroIter<char> iter = imgData->begin<char>();

   /// have to use this one, the "yourdata" one doesn't delete 
   /// the buffer when it's done, no option to force it, crap!!
   /// TODO: figure out how to manage data created our buffers,
   ///       can't have memory leaks
   QImage *ret = new QImage(imgData->dim(1), imgData->dim(2), 32);

   /// so slow, stupid Qt doesn't have nice ways to load an image from
   /// data
   if(imgData->dim(0) == 3) /// rgb
   {
      for(int y=0; y<(int)(imgData->dim(2)); ++y)
      {
         for(int x=0; x<(int)(imgData->dim(1)); ++x)
         {
            ret->setPixel(x,y,qRgb((int)(iter(0,x,y)),
                                   (int)(iter(1,x,y)), 
                                   (int)(iter(2,x,y))));
         }
      }
   }
   else if(imgData->dim(0) == 4) ///rgba
   {
      for(int y=0; y<int(imgData->dim(2)); ++y)
      {
         for(int x=0; x<int(imgData->dim(1)); ++x)
         {
            ret->setPixel(x,y,qRgba((int)iter(0,x,y),
                                    (int)iter(1,x,y), 
                                    (int)iter(2,x,y), 
                                    (int)iter(3,x,y)));
         }
      }
   }
   else if(imgData->dim(0) == 1) /// scalar scale
   {
      for(int y=0; y<int(imgData->dim(2)); ++y)
      {
         for(int x=0; x<int(imgData->dim(1)); ++x)
         {
            ret->setPixel(x,y,qRgb((int)iter(0,x,y),
                                   (int)iter(0,x,y), 
                                   (int)iter(0,x,y)));
         }
      }
   }

   return ret;
}


//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
/// NrroCanvasImg
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////


//////////////////////////////////////////////////////////////////////////
/// construct
//////////////////////////////////////////////////////////////////////////

NrroCanvasImg::NrroCanvasImg(QCanvas *canvas)
: CanvasImage(canvas), _n(0)
{

}

void NrroCanvasImg::setNrro(const NrroSP n, const vec2d minmax)
{
   _n = n;
   if(!_n.isNull())
   {
      setImage(genNrroQImage(_n,minmax));
   }
   else
   {
      setImage(0);
   }

}

---

Send questions, comments, and bug reports to: