From b27bdc63c1787b88351772906838dfe82495b22b Mon Sep 17 00:00:00 2001
From: Daniel Martin <Daniel.Martin@otech.com.au>
Date: Sat, 22 Jul 2023 14:27:48 +1000
Subject: [PATCH] Make colors more accessible Using a combination of the HSLuv
 (Pastel) color space and incrementing by the Golden Angle

---
 lib/components/generated_form.dart | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/lib/components/generated_form.dart b/lib/components/generated_form.dart
index 8ab4149..761d6bc 100644
--- a/lib/components/generated_form.dart
+++ b/lib/components/generated_form.dart
@@ -1,5 +1,6 @@
 import 'dart:math';
 
+import 'package:hsluv/hsluv.dart';
 import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:obtainium/components/generated_form_modal.dart';
@@ -132,19 +133,19 @@ class GeneratedForm extends StatefulWidget {
   State<GeneratedForm> createState() => _GeneratedFormState();
 }
 
-// Generates a random light color
-// Courtesy of ChatGPT 😭 (with a bugfix 🥳)
+// Generates a color in the HSLuv (Pastel) color space
+// https://pub.dev/documentation/hsluv/latest/hsluv/Hsluv/hpluvToRgb.html
 Color generateRandomLightColor() {
-  // Create a random number generator
-  final Random random = Random();
-
-  // Generate random hue, saturation, and value values
-  final double hue = random.nextDouble() * 360;
-  final double saturation = 0.5 + random.nextDouble() * 0.5;
-  final double value = 0.9 + random.nextDouble() * 0.1;
-
-  // Create a HSV color with the random values
-  return HSVColor.fromAHSV(1.0, hue, saturation, value).toColor();
+  final randomSeed = Random().nextInt(120);
+  // https://en.wikipedia.org/wiki/Golden_angle
+  final goldenAngle = 180 * (3 - sqrt(5));
+  // Generate next golden angle hue
+  final double hue = randomSeed * goldenAngle;
+  // Map from HPLuv color space to RGB, use constant saturation=100, lightness=70
+  final List<double> rgbValuesDbl = Hsluv.hpluvToRgb([hue, 100, 70]);
+  // Map RBG values from 0-1 to 0-255:
+  final List<int> rgbValues = rgbValuesDbl.map((rgb) => (rgb * 255).toInt()).toList();
+  return Color.fromARGB(255, rgbValues[0], rgbValues[1], rgbValues[2]);
 }
 
 class _GeneratedFormState extends State<GeneratedForm> {