PixMapImage.opIndex

Getting a color value from an individual pixel through a two-index indexing operation. Note: It is allowed to use as indices values ​​greater than the length and width (or less than 0) as indices, since the values ​​will be converted to the actual length of the image array.

Typical usage:

// creating image of size 20x20, all pixels are black
auto pmi = new PixMapImage(20, 20);   
// get pixel color at coords (5;5)
pmi[5, 5].writeln;