Problem of the Day
A new programming or logic puzzle every Mon-Fri

Line Drawing

Sometimes it would be great to be a kid again. To get back in that spirit let's start the day off by taking your favorite programming language and drawing out a line. The line must be at least 10px in length and must be output in to a standard image format (jpg, gif, png, svg, etc).

Permalink: http://problemotd.com/problem/line-drawing/

Comments:

  • James - 11 years, 1 month ago

    In Go (golang):

    package main

import "os"
import "image"
import "image/draw"
import "image/jpeg"

func main() {
    // Create image in memory.
    dst := image.NewRGBA(image.Rect(0, 0, 500, 500))

    // Draw background.
    draw.Draw(dst, dst.Bounds(), &image.Uniform{image.White}, image.ZP, draw.Src)

    // Draw line.
    draw.Draw(dst, image.Rect(50, 245, 450, 255), &image.Uniform{image.Black}, image.ZP, draw.Src)

    // Create image file on disc.
    out, err := os.Create("line.jpg")
    if err != nil {
        panic(err.Error())
    }
    defer out.Close()

    // Write image to disc.
    jpeg.Encode(out, dst, nil)
}

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