P3Image

A class that provides the ability to work with color images in P3 format. NB: The format is raw text.

Note: This class supports indexing and assigning values ​​to specific pixels via 1D or 2D indexing, and provides P3 file loading/saving capabilities. According to the accepted convention, in the original description of the format inside the Netpbm package, the extension of these files should be *.ppm.

Typical usage:

// creating of empty image
auto img = new P3Image;  					
// load image from file `Lenna.ppm`
img.load(`Lenna.ppm`);   					
// change pixel at coords (10; 10), now are white
img[10, 10] = new RGBColor(255, 255, 255); 	
// get color of 11th pixel
img[10].writeln;							
// save file as `Lenna2.ppm`
img.save(`Lenna2.ppm`);						

// creating image of 10x10, all pixels are red
auto img2 = new P3Image(10, 10, new RGBColor(255, 0, 255)); 
// increasing luminance by two
img2[10] = img2[10] * 2; 									
// save as `test.ppm`
img2.save(`test.ppm`);