Letters from Sanford Street # 410

This took forever, and I'm finally done. The issue I had initially was simply making the code work, but then I had to turn it into a function, to make the code apply to different inputs, in this case, different images, what it came down to was an oversight I had with a previous question: functions need a return() line. Took forever, but it's done, and it works.

        function swapRedGreen(someImage){ 

        var picture = new SimpleImage(someImage);

        for (var pixel of picture.values()) {

        

        var red1 = pixel.getRed(); 

        var green1 = pixel.getGreen();

        var blue1 = pixel.getBlue();

        

        pixel.setGreen(red1);   

        pixel.setRed(green1);

                             

                                             }

        return(picture);

                                             }

 

var result = swapRedGreen("chapel.png");

print(result);

var result = swapRedGreen("dinos.png");

print(result);

var result = swapRedGreen("drewRobert.png");

print(result);

* * *

        function swapRedGreen(someImage)           { 

        var picture = new SimpleImage(someImage);

        for (var pixel of picture.values())        {

        

        var red = pixel.getRed(); 

        var green = pixel.getGreen();

        var blue = pixel.getBlue();

       

        if (pixel.getGreen() == 51 ) if (pixel.getBlue() == 227 )  {

        pixel.setRed(255);

        pixel.setGreen(255); 

        pixel.setBlue(0);

                                                                   }                                      

                                  

        

                                  

                             

                                             }

        return(picture);

                                             }

 

var result = swapRedGreen("duke_blue_devil.png");

print(result);

        var red = result.getRed(30,30); 

        var green = result.getGreen(30,30);

        var blue = result.getBlue(30,30);

        

        print(red);

        print(green);

        print(blue);

* * * 

        function swapRedGreen(someImage)           { 

        var picture = new SimpleImage(someImage);

        for (var pixel of picture.values())        {

        

        var red = pixel.getRed(); 

        var green = pixel.getGreen();

        var blue = pixel.getBlue();

       

        if (pixel.getGreen() != 255 ) 

        if (pixel.getBlue() != 255 )  

        if (pixel.getRed() != 255 )                                {

            

        pixel.setRed(255);

        pixel.setGreen(255); 

        pixel.setBlue(0);

                                                                   }                                      

                                  

        

                                  

                             

                                             }

        return(picture);

                                             }

 

var result = swapRedGreen("duke_blue_devil.png");

print(result);

        var red = result.getRed(30,30); 

        var green = result.getGreen(30,30);

        var blue = result.getBlue(30,30);

        

        print(red);

        print(green);

        print(blue);

So this one was also interesting, in the first attempt, I tried to make all the blue pixels yellow, but I found that I came out with a better result by turning all non-white pixels yellow, there seemed to be a border around the image and was a blue that was not the exact same blue as the rest of the image.