chooyan-eng

// Water Doodle — single-file version for DartPad.
//
// This concatenates doodle_config.dart / doodle_engine.dart / doodle_painter.dart /
// main.dart from lib/ into one file. It uses no fragment shader; a pure Dart
// implementation that simply stacks two layers of blurred circles via
// MaskFilter.blur.
//
// Usage: open https://dartpad.dev/, select all, paste this content, and Run.
//
// NOTE: lib/ is the source of truth. Do not edit this file directly; sync it

chooyan-eng

// "Nets of Solids" — a self-contained, single-file version
//
// Extracted from a math-experience app for elementary school kids
// (private repository) as a single runnable screen for sharing as a Gist.
// No external packages (Flutter standard APIs only).
//
// How to run:
//   flutter create net_folding_demo
//   cd net_folding_demo
//   (replace lib/main.dart with this file)

chooyan-eng

import 'package:flutter/material.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override

chooyan-eng

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

chooyan-eng

import 'dart:async';
import 'dart:math';

import 'package:animated_to/animated_to.dart';
import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(home: GraphDemoPage()));

class GraphDemoPage extends StatefulWidget {
  const GraphDemoPage({super.key});

chooyan-eng

import 'package:animated_to/animated_to.dart';
import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(home: DraggableDemoPage()));

class DraggableDemoPage extends StatefulWidget {
  const DraggableDemoPage({super.key});

  @override
  State<DraggableDemoPage> createState() => _DraggableDemoPageState();

chooyan-eng

import 'package:animated_to/animated_to.dart';
import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();

chooyan-eng

import 'package:animated_to/animated_to.dart';
import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(home: DraggableDemoPage()));

class DraggableDemoPage extends StatefulWidget {
  const DraggableDemoPage({super.key});

  @override
  State<DraggableDemoPage> createState() => _DraggableDemoPageState();

chooyan-eng

import 'package:flutter/material.dart';

void main() {
  runApp(const MaterialApp(home: SimpleDemo()));
}

class SimpleDemo extends StatefulWidget {
  const SimpleDemo({super.key});

  @override

chooyan-eng

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(home: MoveBasicPage()));

class MoveBasicPage extends StatefulWidget {
  const MoveBasicPage({super.key});

  @override
  State<MoveBasicPage> createState() => MoveBasicPageState();
}