class EdgeField/*********************************************************/
{
  float value;
  PGraphics eField;
  
  /************constructor************************************/
  EdgeField(int gridColumns, 
            int gridLines,
            ObstacleField oField
           )
  {
    eField = createGraphics(gridColumns,gridLines,JAVA2D);
    eField.beginDraw();
    for (int i=0; i<getGridColumns(); i++)
    {
      for(int j=0; j<getGridLines(); j++)
      {
        if(oField.isObstacle(i,j)==true)
        {
          fill(0);
          eField.point(i, j);
        }
      }
    }
    eField.filter(BLUR, 3);
    eField.endDraw();   
  }
  
  /*************methods*************************************************** 
  PImage getImage()
  getGridLines()
  getGridColumns()
  float getValue(x,y)
  float getBrightness(int x,int y)
  void increaseValue(int x, int y)
  void printlnValues()
 */
 
 
 PImage getImage()
 {
   return eField;
 }
 
 int getGridColumns()
 {
   return eField.width;
 }
 
 int getGridLines()
 {
   return eField.height;
 }
 
 float getValue(int x,int y)
 {
   color colour = eField.get(x,y);
   float valueBright = brightness(colour);
   float valueNumber = valueBright/25.5;
   return valueNumber;
 }
 
 float getBrightness(int x,int y)
 {
   color colour = eField.get(x,y);
   float valueBright = brightness(colour);
   return valueBright;
 }
 
 void printlnValues()
 {
   NumberFormat nf = NumberFormat.getNumberInstance();
   nf.setMaximumFractionDigits(5);
   nf.setMinimumFractionDigits(5);
   
   for(int i=0; i<gridLines; i++)
   {
     for(int j=0; j<gridColumns; j++)
     {
     print(  nf.format( getValue(j,i) )  +"  ");
     }
     println();
   }
   println();
 }
 
}