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✨ Functions are at the heart of how we structure our programs. They allow us to write programs that are more readable and less repetitive. They are the unsung heroes of great code! ✨
(Inline links below are for YuJa)
Here’s a way to write functions when you have a lot of parameters: use an object as the only parameter, that way you can name the different arguments you’re sending in as properties:
function setup() {
createCanvas(500, 500);
}
function draw() {
background(0);
// Create an object with the settings/configuration
// for our rectangle. Note how you can *tell what each number is for*
// because it is labelled by the object property name
// You're much less likely to make a mistake!
let config = {
x: 250,
y: 250,
w: 100,
h: 100,
rectMode: CENTER,
fillColour: "#ff0000",
strokeColour: "#ffffff",
strokeWeight: 10
};
drawRectangle(config);
}
/**
* Draws a rectangle using the provided options
* x, y, w, h, rectMode, fillColour, strokeColour, strokeWeight
* (It's a good idea to list the options so that you can remember
* what they are easily.)
*/
function drawRectangle(options) {
// Applies all the options specified in the object
push();
rectMode(options.rectMode);
stroke(options.strokeColour);
fill(options.fillColour);
strokeWeight(options.strokeWeight);
rect(options.x, options.y, options.w, options.h);
pop();
}
There’s one extra step you could take here using something called destructuring, but you can ask about that if you’re interested! It’s fancy!