public void decreaseRed()
  {
    Pixel[]pixelArray=this.getPixels();
    int value=0;
    
    //loop through all the pixels in the array
    for (Pixel pixelObj:pixelArray)
    {
      //get the red value
      value=pixelObj.getRed();
      
      //decrease the red value by 50% (1/2)
      value=value/2;
      
      //set the red value of the current pixel to the new value
      pixelObj.setRed(value);
    }
  }
  
  public void increaseRed()
  {
    Pixel[]pixelArray=this.getPixels();
    int value=0;
    
    //loop through all the pixels in the array
    for (Pixel pixelObj:pixelArray)
    {
      //get the red value
      value=pixelObj.getRed();
      
      //increase the red value by 50% (1.5)
      value=value*2;
      
      //set the red value of the current pixel to the new value
      pixelObj.setRed(value);
    }
  }
  
    public void clearBlue()
  {
    Pixel[]pixelArray=this.getPixels();
    Pixel pixelObj=null;
    int index=0;
    
    //loop through all the pixels in the array
    while (index<pixelArray.length)
    {
      //get the current pixel
      pixelObj=pixelArray[index];
      
      //set the blue value
      pixelObj.setBlue(0);
      
      //increments
      index++;
    }
  }
    
    public void makeSunset()
  {
    Pixel[]pixelArray=this.getPixels();
    Pixel pixelObj=null;
    int value=0;
    int index=0;
    
    //loop through all the pixels in the array
    while (index<pixelArray.length)
    {
      //get the current pixel
      pixelObj=pixelArray[index];
      
      //set the blue value and green value 30% lower
      pixelObj.setBlue((int)(pixelObj.getBlue()*0.7));
      pixelObj.setGreen((int)(pixelObj.getGreen()*0.7));
      
      //increments
      index++;
    }
  }
  
    public void makeSomeSunset()
  {
    Pixel[]pixelArray=this.getPixels();
    Pixel pixelObj=null;
    int value=0;
    int index=0;
    
    //loop through all the pixels in the array
    while (index<pixelArray.length)
    {
      //get the current pixel
      pixelObj=pixelArray[index];
      
      //set the blue value and green value 30% lower
      pixelObj.setBlue((int)(pixelObj.getBlue()*0.7));
      pixelObj.setGreen((int)(pixelObj.getGreen()*0.7));
      
      //increments
      index=index+2;
    }
  }
    
   public void ReduceBR()
  {
    Pixel[]pixelArray=this.getPixels();
    Pixel pixelObj=null;
    int value=0;
    int index=0;
    
    //loop through all the pixels in the array
    while (index<pixelArray.length)
    {
      //get the current pixel
      pixelObj=pixelArray[index];
      
      //set the blue value and green value 30% lower
      pixelObj.setBlue((int)(pixelObj.getBlue()*0.7));
      pixelObj.setRed((int)(pixelObj.getRed()*0.7));
      
      //increments
      index++;
    }
  }
   
   public void negate()
   {
     Pixel[]pixelArray=this.getPixels();
     int redValue, blueValue, greenValue=0;
     Pixel pixelObj=null;
       
       //loop through all the pixels
       for(int i=0;i<pixelArray.length;i++)
     {
       //get the current pixel
       pixelObj=pixelArray[i];
       
       //get the values
       redValue=pixelObj.getRed();
       greenValue=pixelObj.getGreen();
       blueValue=pixelObj.getBlue();
       
       //set the pixel's color
       pixelObj.setColor(new Color(255-redValue,255-greenValue,255-blueValue));
     }
   }
   
    public void grayscale()
    {
    Pixel[]pixelArray=this.getPixels();
    Pixel pixelObj=null;
    int intensity=0;
    
    //loop through all the pixels
    for (int i=0;i<pixelArray.length;i++)
    {
      //get the current pixel
      pixelObj=pixelArray[i];
      
      //compute the average intensity
      intensity=(pixelObj.getRed()+pixelObj.getGreen()+pixelObj.getBlue())/3;
      
      //set the pixel color
      pixelObj.setColor(new Color(intensity,intensity,intensity));
    }
    }