lib/maracasVisuLib/src/interface/wxWindows/widgets/pPlotter/Histogram.cxx

   1 /*
   2  This class plots image's histograms in a plotter
   3 */
   4
   5  //---------------------
   6  // Includes
   7  //----------------------
   8  #include "Histogram.h"
   9  #include  "vtkImageCast.h"
  10  #include  <math.h>
  11 // ----------------------------------------------------------------------------
  12 // WX headers inclusion.
  13 // For compilers that support precompilation, includes <wx/wx.h>.
  14 // ----------------------------------------------------------------------------
  15
  16         #ifndef WX_PRECOMP
  17         #include <wx/wx.h>
  18         #endif
  19
  20 //----------------------------------------------------------------------------
  21 // Class implementation
  22 //----------------------------------------------------------------------------
  23
  24 IMPLEMENT_CLASS(Histogram, wxWindow)
  25 //----------------------------------------------------------------------------
  26 // Event Table
  27 //----------------------------------------------------------------------------
  28
  29 BEGIN_EVENT_TABLE(Histogram, wxWindow)
  30         EVT_SIZE  (Histogram::OnSize)
  31 END_EVENT_TABLE()
  32  //---------------------
  33  // Constructor
  34  //----------------------
  35
  36         Histogram::Histogram( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size, int flag,vtkImageData* imageData):
  37         wxPanel(parent,id,pos,size,flag)
  38         {
  39                  SetBackgroundColour(wxColour(255,255,255));
  40                 //histogram
  41                 histogram= new pHistogram(imageData);
  42
  43                 //plotter
  44                 plotter=new pPlotterWindow(this, -1, wxPoint(0,0), wxSize(742,476), wxSUNKEN_BORDER );
  45
  46                 plotter->AddLayer(new pPlotterScaleX());
  47                 plotter->AddLayer(new pPlotterScaleY());
  48                 //is a plotter of histograms
  49                 plotter->setType(2);
  50                 //setting the popMenu
  51                 plotter->setPopUpMenu(true,true,true,true,true,true,false,false,false,false,false,false,false);
  52                 histogramSize=0;
  53
  54                 idHistogram=-1;
  55
  56                 //drawing
  57                 drawHistogram();
  58
  59
  60         }
  61
  62         Histogram::~Histogram()
  63         {
  64                 delete histogram;
  65                 delete plotter;
  66
  67         }
  68         /*
  69         Draw the histogram in the plotter
  70         */
  71         void Histogram::drawHistogram()
  72         {
  73                 //int xValues[MAX],yValues[MAX],extent[6];
  74                 double* xValues;
  75                 double* yValues;
  76
  77                 vtkImageData* histogramImageData=histogram->getHistogram();
  78
  79                 //size
  80                 histogramSize=histogram->getSize();
  81
  82                 //plotting
  83                 xValues=(double*)malloc(NUM_POINTS*sizeof(double));
  84                 yValues=(double*)malloc(NUM_POINTS*sizeof(double));
  85
  86                 unsigned short* histogramPointer=(unsigned short*)histogramImageData->GetScalarPointer(0,0,0);
  87
  88                 for(int i=0; i< histogramSize; i++)
  89                 {
  90                         xValues[i]=i;
  91                         yValues[i]=log( (double) histogramPointer[i])*10;
  92                 }
  93
  94
  95                 pGraphicalFunction* histogramFunction=plotter->getFunctionForVectors(xValues,histogramSize,yValues,histogramSize);
  96
  97                 if (histogramFunction)
  98                 {
  99                         histogramFunction->setEditable(false);
 100                         //smooth function
 101                         histogramFunction->setType(2);
 102                         //it is an histogram
 103                         histogramFunction->setmType(2);
 104                         idHistogram=plotter->addFunction(histogramFunction);
 105                         //for setting range the vision
 106                         plotter->addFunctionToMove(histogramFunction);
 107                         wxPen mypen1(*wxBLUE, 1, wxSOLID );
 108                         mypen1.SetWidth(2);
 109                         histogramFunction->SetPen( mypen1 );
 110                 }
 111
 112
 113                         free(xValues);
 114                         free(yValues);
 115
 116                 //plotter->setPopUpMenu(true,true,false,false,true,true,false,false,false,false,false,false,false);
 117         }
 118
 119         /*
 120                 if the user resize the window
 121         */
 122         void Histogram::OnSize(wxSizeEvent &WXUNUSED(event))
 123         {
 124                 int scrX,scrY;
 125                 GetClientSize(&scrX,&scrY);
 126                 plotter->SetSize(scrX,scrY);
 127                 /*
 128                 pGraphicalFunction* actual=plotter->getFunction(idTransferenceFunction);
 129                 actual->setScreens(scrX,scrY);
 130                 actual->setScales();
 131                 */
 132         }
 133
 134         /*
 135                 get a point of the Histogram
 136                 given the grey value
 137         */
 138         int Histogram::getHistogramPoint(int gValue)
 139         {
 140                 return histogram->getHistogramPoint(gValue);
 141         }
 142
 143
 144         //-------------------
 145         // Getter and setters
 146         //-------------------
 147
 148         int Histogram::getHistogramSize()
 149         {
 150                 return histogramSize;
 151         }
 152
 153