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Pull peak arrays out to functional component

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This commit is contained in:
Jordan Eldredge 2019-12-26 14:17:27 -08:00
parent 782e53b460
commit a8f2dcb40e
1 changed files with 7 additions and 5 deletions
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12
js/components/Visualizer.js
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@ -1,4 +1,4 @@
import React, { useMemo } from "react";
import React, { useMemo, useState } from "react";
import { connect } from "react-redux";
import { toggleVisualizerStyle } from "../actionCreators";
@ -15,6 +15,8 @@ import {
} from "./visualizerUtils";
function Wrapper(props) {
const [barPeaks] = useState(() => new Array(NUM_BARS).fill(0));
const [barPeakFrames] = useState(() => new Array(NUM_BARS).fill(0));
const renderWidth = props.canvasWidth;
const renderHeight = props.canvasHeight;
const height = props.canvasHeight * PIXEL_DENSITY;
@ -42,6 +44,8 @@ function Wrapper(props) {
width,
bgCanvas,
barCanvas,
barPeaks,
barPeakFrames,
};
return <Visualizer {...visualizerProps} />;
@ -49,8 +53,6 @@ function Wrapper(props) {
class Visualizer extends React.Component {
componentDidMount() {
this.barPeaks = new Array(NUM_BARS).fill(0);
this.barPeakFrames = new Array(NUM_BARS).fill(0);
this.canvasCtx = this.canvas.getContext("2d");
this.canvasCtx.imageSmoothingEnabled = false;
@ -126,8 +128,8 @@ class Visualizer extends React.Component {
dataArray: this.dataArray,
renderHeight: this.props.renderHeight,
octaveBuckets: this.octaveBuckets,
barPeaks: this.barPeaks,
barPeakFrames: this.barPeakFrames,
barPeaks: this.props.barPeaks,
barPeakFrames: this.props.barPeakFrames,
height: this.props.height,
canvasCtx: this.canvasCtx,
barCanvas: this.props.barCanvas,