package main

import "fmt"
import "os" //for handling the logging output

func main() {

     // Image
     var image_width int = 256
     var image_height int = 256

     // Rendering
     fmt.Println("P3")
     fmt.Println(image_width, " ", image_height, "\n255")
     for j := 0; j < image_height; j++ {
          fmt.Fprintf(os.Stderr, "\rScanlines remaining: %d ", image_height-j)
          for i := 0; i < image_width; i++ {
               r := float32(i) / float32(image_width - 1)
               g := float32(j) / float32(image_height-1)
               b := 0

               ir := int(r * 256)
               ig := int(g * 256)
               ib := int(b * 256)
               fmt.Println(ir, " ", ig, " ", ib)
          }
     }
     // INFO: The pixels are written out in rows.
     // Image file can be created with
     // go run main.go > image.ppm to save image
}