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t-artikov / index.html
Last active February 12, 2021 04:23
mapgl support test
<!DOCTYPE html>
<html>
<body>
<p id="r1"/>
<p id="r2"/>
<script src="https://mapgl.2gis.com/api/js/v1"></script>
<script>
const r1 = mapgl.notSupportedReason({ failIfMajorPerformanceCaveat: false });
const r2 = mapgl.notSupportedReason({ failIfMajorPerformanceCaveat: true });
@t-artikov
t-artikov / MainActivity.kt
Created October 11, 2020 11:31
Jetpack Compose counter example
package com.example.compose
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.compose.foundation.Text
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.material.Button
import androidx.compose.material.MaterialTheme
import androidx.compose.runtime.*
@t-artikov
t-artikov / cpp2java.txt
Created June 2, 2020 03:26
C++ to Java binding tools
https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html
https://github.com/java-native-access/jna
https://github.com/spotify/JniHelpers
https://github.com/jmarranz/jnieasy
https://github.com/fusesource/hawtjni
https://github.com/jnr
https://github.com/nativelibs4java/JNAerator
https://github.com/nativelibs4java/BridJ
https://github.com/mapbox/jni.hpp
https://github.com/dropbox/djinni
@t-artikov
t-artikov / main.dart
Last active April 29, 2020 19:10
flutter navigator test
import 'package:flutter/material.dart';
class AppState extends ChangeNotifier {
final _pages = ['Page 1', 'Page 2'];
List<String> get pages => _pages;
bool get canPop => _pages.length > 1;
bool get canPush => _pages.length < 5;
@t-artikov
t-artikov / main.dart
Last active February 16, 2020 14:03
Flutter Touch Detection
import 'package:flutter/material.dart';
void main() {
final app = MaterialApp(
home: MyHomePage(),
);
runApp(app);
}
class MyHomePage extends StatelessWidget {
@t-artikov
t-artikov / main.dart
Last active February 9, 2020 08:24
Flutter rebuild optimization
import 'package:flutter/material.dart';
void main() {
final app = MaterialApp(
home: MyHomePage(),
);
runApp(app);
}
class Item {
@t-artikov
t-artikov / main.dart
Created January 12, 2020 12:12
Flutter gradient
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
@t-artikov
t-artikov / main.dart
Last active March 5, 2024 14:09
Flutter color interpolation
import 'dart:ui';
import 'package:flutter/material.dart';
Color mixColors(Color a, Color b, double t) {
final w1 = (1 - t) * a.opacity;
final w2 = t * b.opacity;
final n = w1 + w2;
final w = n > 0.000001 ? w2 / n : 0.5;
@t-artikov
t-artikov / index.html
Last active January 12, 2020 12:57
html gradient
<!DOCTYPE html>
<html>
<head>
<style>
#grad1 {
height: 200px;
background-image: linear-gradient(to right,#ff0000ff, transparent, #0000ffff);
}
</style>
@t-artikov
t-artikov / dct_test.py
Created November 5, 2019 14:16
DCT test
import numpy as np
from scipy.fftpack import dct, idct
import matplotlib.pyplot as plt
from PIL import Image
import matplotlib.image
def dct_2d(x):
return dct(dct(x, axis=0, norm='ortho'), axis=1, norm='ortho')
def idct_2d(x):