This commit is contained in:
Дмитрий Савенко 2023-02-13 19:36:13 +03:00
parent 3df71228ec
commit f53164a79c
4 changed files with 109 additions and 44 deletions

2
.gitignore vendored
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@ -17,7 +17,7 @@
.env.development.local
.env.test.local
.env.production.local
.idea/
.idea
npm-debug.log*
yarn-debug.log*

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@ -2,17 +2,6 @@
text-align: center;
}
.App-logo {
height: 40vmin;
pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
.App-logo {
animation: App-logo-spin infinite 20s linear;
}
}
.App-header {
background-color: #282c34;
min-height: 100vh;
@ -24,15 +13,7 @@
color: white;
}
.App-link {
color: #61dafb;
}
canvas {
background-color: #a1a39c;
@keyframes App-logo-spin {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}

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@ -1,26 +1,111 @@
import React from 'react';
import logo from './logo.svg';
import React, {useEffect, useRef, useState} from 'react';
import './App.css';
function App() {
return (
<div className="App">
<header className="App-header">
<img src={logo} className="App-logo" alt="logo" />
<p>
Edit <code>src/App.tsx</code> and save to reload.
</p>
<a
className="App-link"
href="https://reactjs.org"
target="_blank"
rel="noopener noreferrer"
>
Learn React
</a>
</header>
</div>
);
const [canvas, setCanvas] = useState<HTMLCanvasElement | null>(null);
useEffect(() => {
setCanvas(refCanvas.current!);
}, []);
const refCanvas = useRef<HTMLCanvasElement>(null);
const ctx: CanvasRenderingContext2D = canvas?.getContext('2d')!;
useEffect(() => {
if (ctx && canvas) {
ctx.clearRect(0, 0, canvas?.width, canvas?.height)
// ctx.fillRect(1, 2, 50, 50);
ctx.fillStyle = "black"; // Задаём чёрный цвет для линий
ctx.lineWidth = 2.0; // Ширина линии
ctx.beginPath(); // Запускает путь
ctx.moveTo(100, 10); // Указываем начальный путь
ctx.lineTo(100, 400); // Перемешаем указатель
ctx.lineTo(800, 400); // Ещё раз перемешаем указатель
ctx.stroke(); // Делаем контур
// ctx.strokeRect(150, 200, 300, 200)
// Цвет для рисования
ctx.fillStyle = "black";
// Цикл для отображения значений по Y
for (let i = 0; i < 6; i++) {
ctx.fillText((5 - i) * 20 + "", 4, i * 100 + 60);
ctx.beginPath();
ctx.moveTo(25, i * 80 + 60);
ctx.lineTo(30, i * 80 + 60);
ctx.stroke();
}
//
// Массив с меткам месяцев
let labels = ["JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL",];
// // Выводим метки
for (let i = 0; i < labels.length; i++) {
ctx.fillText(labels[i], 50 + i * 100, 475);
}
// Назначаем зелёный цвет для графика
ctx.fillStyle = "green";
// Цикл для от рисовки графиков
// for (var i = 0; i < data.length; i++) {
// var dp = data[i];
// ctx.fillRect(40 + i * 100, 460 - dp * 5, 50, dp * 5);
// }
print(resData);
}
}, [canvas]);
const resData: number[] = [20, 30, 40, 50, 90, 10, 6, 44, 90, 10];
const print = (array: number[]) => {
const countArrValue = array.length;
const gap = 800 / countArrValue;
ctx.fillStyle = "red"; // Задаём чёрный цвет для линий
ctx.lineWidth = 2.0; // Ширина линии
ctx.beginPath(); // Запускает путь
for (let i = 0; i <= 0 ; i++) {
let value = array[i];
if (i == 0) {
ctx.moveTo(200, 400);
// ctx.lineTo(30, 460 - value);
ctx.arc(200, 350 - value, 5, 0, 2 * Math.PI, false);
ctx.fillStyle = 'black';
ctx.fill();
} else {
// ctx.lineTo(30 + i * gap, 400 - value);
// ctx.arc(30 + i * gap, 460 - value, 5, 0, 2 * Math.PI, false);
}
// ctx.stroke();
}
};
return (
<div className="App">
<header className="App-header">
<canvas width="1000" height="500" ref={refCanvas}/>
</header>
</div>
);
}
export default App;

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@ -1 +0,0 @@
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