我正在尝试在反应应用程序中使用p5
(https://p5js.org/)并且一些草图的性能非常糟糕(与开发应用程序后的开发相同)。我正在使用create-react-app
作为项目脚手架,而不对构建设置进行任何更改。
在浏览器中直接运行草图时,草图的运行速度大约为50-60fps,但加载到反应后,它们会下降到大约1-2fps。
我正在连接草图,反应如下:
// React Component to interface the sketches
class P5Wrapper extends React.Component {
componentDidMount() {
const { sketch, ...rest } = this.props;
this.canvas = new p5(sketch(rest), this.wrapper);
}
componentWillReceiveProps(newProps) {
const { sketch, ...rest } = newProps;
if (this.props.sketch !== newProps.sketch) {
this.canvas.remove();
this.canvas = new p5(newProps.sketch(rest), this.wrapper);
}
if (typeof this.canvas.onNewProps === "function") {
this.canvas.onNewProps(newProps);
}
}
componentWillUnmount() {
this.canvas.remove();
}
render() {
return <div ref={(wrapper) => this.wrapper = wrapper} />;
}
}
// you can watch the sketch in action here (https://p5js.org/examples/simulate-game-of-life.html)
const gameOfLife = (props) => (p) => {
let w;
let columns;
let rows;
let board;
let next;
p.setup = () => {
p.createCanvas(1024, 768);
p.background(255);
p.noStroke();
w = 20;
columns = p.floor(p.width / w);
rows = p.floor(p.height / w);
board = new Array(columns);
for (let i = 0; i < columns; i++) {
board[i] = new Array(rows);
}
next = new Array(columns);
for (let i = 0; i < columns; i++) {
next[i] = new Array(rows);
}
init();
};
p.draw = () => {
generate();
for (let i = 0; i < columns; i++) {
for (let j = 0; j < rows; j++) {
if ((board[i][j] === 1)) p.fill(0);
else p.fill(255);
p.rect(i * w, j * w, w - 1, w - 1);
}
}
};
p.mousePressed = () => {
init();
};
const init = () => {
for (let i = 0; i < columns; i++) {
for (let j = 0; j < rows; j++) {
if (i === 0 || j === 0 || i === columns - 1 || j === rows - 1) board[i][j] = 0;
else board[i][j] = p.floor(p.random(2));
next[i][j] = 0;
}
}
};
const generate = () => {
for (let x = 1; x < columns - 1; x++) {
for (let y = 1; y < rows - 1; y++) {
let neighbors = 0;
for (let i = -1; i <= 1; i++) {
for (let j = -1; j <= 1; j++) {
neighbors += board[x + i][y + j];
}
}
neighbors -= board[x][y];
if ((board[x][y] === 1) && (neighbors < 2)) next[x][y] = 0;
else if ((board[x][y] === 1) && (neighbors > 3)) next[x][y] = 0;
else if ((board[x][y] === 0) && (neighbors === 3)) next[x][y] = 1;
else next[x][y] = board[x][y];
}
}
const temp = board;
board = next;
next = temp;
};
};
// render the wrapper and the sketch
ReactDOM.render(<P5Wrapper sketch={gameOfLife} />, document.getElementById("root"));
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.0/p5.js"></script>
<div id="root"/>
可能导致经济放缓的原因是什么?
答案 0 :(得分:2)
这似乎是由于RAM的内存不足导致的,当有足够的可用内存时它将平稳运行。但是,当内存不足时,P5.js将以低帧速率运行。
简要说明 我相信,当我们运行带有节点的应用程序时,肯定可以容纳大量的RAM。 尤其是当我们使用4GB或更少的RAM配置对节点进行反应时,最终可能会以每秒很低的帧数运行P5.js或任何图形内容。
提升RAM或在另一台机器上运行
RAM中的内存不足