From 64e93d863d322a9d9e60fe102a494a7cef98e65f Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Fri, 18 Apr 2025 00:59:39 +0200
Subject: add P5.js sketch light as appendix

---
 P5/light.js | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 P5/light.js

(limited to 'P5')

diff --git a/P5/light.js b/P5/light.js
new file mode 100644
index 0000000..c60d225
--- /dev/null
+++ b/P5/light.js
@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: 2025  Noor Ahmad <noora@ruc.dk>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+let button;
+let bgColor; //a variable that keeps track of the background color
+let isBlack = true; //Starts with black
+
+function setup() {
+  createCanvas(800, 500);
+  bgColor = color(15,15,60); 
+  button = createButton("Color");
+  button.mouseClicked(changeBackground);
+  button.size(50, 50);
+  button.position(350, 210);
+} 
+
+function draw() { 
+  background(bgColor);
+}
+
+function changeBackground() {
+  if (isBlack) {
+    bgColor = color(255, 223, 0); //Yellow
+  }else {
+    bgColor = color(15,15,60); //Black
+  }
+  isBlack = !isBlack; //Changing between true and false
+}
\ No newline at end of file
-- 
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