How to resolve the algorithm Color wheel step by step in the Sidef programming language

Published on 12 May 2024 09:40 PM
#Sidef

How to resolve the algorithm Color wheel step by step in the Sidef programming language

Table of Contents

Problem Statement

Write a function to draw a HSV color wheel completely with code. This is strictly for learning purposes only. It's highly recommended that you use an image in an actual application to actually draw the color wheel   (as procedurally drawing is super slow). This does help you understand how color wheels work and this can easily be used to determine a color value based on a position within a circle.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Color wheel step by step in the Sidef programming language

Source code in the sidef programming language

require('Imager')

var (width, height) = (300, 300)
var center = Complex(width/2 , height/2)

var img = %O.new(xsize => width, ysize => height)

for y=(^height), x=(^width) {
    var vector    = (center - x - y.i)
    var magnitude = (vector.abs * 2 / width)
    var direction = ((Num.pi + atan2(vector.real, vector.imag)) / Num.tau)
    img.setpixel(x => x, y => y,
        color => Hash(hsv => [360*direction, magnitude, magnitude < 1 ? 1 : 0])
    )
}

img.write(file => 'color_wheel.png')

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