diff options
Diffstat (limited to 'src/client/views/nodes/audio/WaveCanvas.tsx')
-rw-r--r-- | src/client/views/nodes/audio/WaveCanvas.tsx | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/client/views/nodes/audio/WaveCanvas.tsx b/src/client/views/nodes/audio/WaveCanvas.tsx index d3f5669a2..eacda2d42 100644 --- a/src/client/views/nodes/audio/WaveCanvas.tsx +++ b/src/client/views/nodes/audio/WaveCanvas.tsx @@ -1,3 +1,4 @@ +/* eslint-disable react/require-default-props */ import React from 'react'; interface WaveCanvasProps { @@ -14,7 +15,7 @@ interface WaveCanvasProps { export class WaveCanvas extends React.Component<WaveCanvasProps> { // If the first value of peaks is negative, addToIndices will be 1 - posPeaks = (peaks: number[], addToIndices: number) => peaks.filter((_, index) => (index + addToIndices) % 2 == 0); + posPeaks = (peaks: number[], addToIndices: number) => peaks.filter((_, index) => (index + addToIndices) % 2 === 0); drawBars = (waveCanvasCtx: CanvasRenderingContext2D, width: number, halfH: number, peaks: number[]) => { // Bar wave draws the bottom only as a reflection of the top, @@ -47,6 +48,7 @@ export class WaveCanvas extends React.Component<WaveCanvasProps> { // A half-pixel offset makes lines crisp const $ = 0.5 / this.props.pixelRatio; + // eslint-disable-next-line no-bitwise const length = ~~(allPeaks.length / 2); // ~~ is Math.floor for positive numbers. const scale = width / length; @@ -55,14 +57,14 @@ export class WaveCanvas extends React.Component<WaveCanvasProps> { waveCanvasCtx.beginPath(); waveCanvasCtx.moveTo($, halfH); - for (var i = 0; i < length; i++) { - var h = Math.round((allPeaks[2 * i] / absmax) * halfH); + for (let i = 0; i < length; i++) { + const h = Math.round((allPeaks[2 * i] / absmax) * halfH); waveCanvasCtx.lineTo(i * scale + $, halfH - h); } // Draw the bottom edge going backwards, to make a single closed hull to fill. - for (var i = length - 1; i >= 0; i--) { - var h = Math.round((allPeaks[2 * i + 1] / absmax) * halfH); + for (let i = length - 1; i >= 0; i--) { + const h = Math.round((allPeaks[2 * i + 1] / absmax) * halfH); waveCanvasCtx.lineTo(i * scale + $, halfH - h); } |