flar’s gists

flar / main.dart

Created November 17, 2025 20:49

Shadow algorithm test and comparison

	import 'dart:math';

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

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

	class MyApp extends StatelessWidget {

flar / main.dart

Created June 18, 2025 20:48

Shadow performance on various shapes

	import 'package:flutter/material.dart';

	void main() {
	runApp(MyApp());
	}

	class MyApp extends StatelessWidget {
	@override
	Widget build(BuildContext context) {
	return MaterialApp(

flar / main.dart

Created October 17, 2024 21:12

Test of very tiny join decorations (green is path, blue is 2 lines)

	import 'package:flutter/material.dart';

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

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

	@override

flar / hairline_test.cc

Created October 7, 2024 23:46

Test case to visualize the sub-pixel registration of hairlines against reference (round)rects.

	TEST_P(AiksTest, HorizontalHairlinesPixelRegistration) {
	const DlStrokeCap caps[] = {
	DlStrokeCap::kButt,
	DlStrokeCap::kSquare,
	DlStrokeCap::kRound,
	};

	DlPaint stroke_paint;
	stroke_paint.setDrawStyle(DlDrawStyle::kStroke);
	stroke_paint.setStrokeWidth(0.0f);

flar / main.dart

Created September 30, 2024 22:05

Demonstration of tile modes used in blurring backdrop filters (doesn't work with Skia currently, only Impeller)

	import 'dart:math';
	import 'dart:ui';

	import 'package:flutter/material.dart';

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

	class App extends StatefulWidget {

flar / main.dart

Last active August 31, 2025 11:41

Example of how to fade the edges of a BackdropFilter

	import 'dart:ui';

	import 'package:flutter/material.dart';

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

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

flar / gist:60b95e86c0d641be1d7505d75605fe48

Last active November 29, 2023 23:29

Dart program to compute divisions of a quarter circle based on a pixel error metric.

	import 'dart:math';

	class Point {
	Point(this.x, this.y);

	double x;
	double y;

	operator+(Point p) { return Point(x + p.x, y + p.y); }
	operator(double v) { return Point(x v, y * v); }

flar / main.dart

Last active January 23, 2021 00:12

Workaround for Image widget not applying the filter quality unless you force it to change size via the "fit" operation

	import 'dart:typed_data';
	import 'dart:ui' as ui;

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

	void main() {
	runApp(ImageTestApp());
	}

flar / main.dart

Created October 22, 2020 01:57

Testing 3 ways to animate a transform on a widget: Transform(), FilteredWidget(), and Transform(methd: TransformMethod.bitmapTransform)

	import 'dart:math';
	import 'dart:ui';

	import 'package:flutter/material.dart';

	void main() {
	runApp(MyApp());
	}

	class MyApp extends StatelessWidget {

flar / main.dart

Created October 17, 2020 02:38

Testing 3 ways to animate a transform on a widget: Transform(), FilteredWidget(), and Transform(cacheTransform: ...)

	import 'dart:math';
	import 'dart:ui';

	import 'package:flutter/material.dart';

	void main() {
	runApp(MyApp());
	}

	class MyApp extends StatelessWidget {

Jim Graham flar