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-rw-r--r--animism-align/frontend/views/align/components/waveform.component.js32
1 files changed, 16 insertions, 16 deletions
diff --git a/animism-align/frontend/views/align/components/waveform.component.js b/animism-align/frontend/views/align/components/waveform.component.js
index 2604f2a..4cd9963 100644
--- a/animism-align/frontend/views/align/components/waveform.component.js
+++ b/animism-align/frontend/views/align/components/waveform.component.js
@@ -6,7 +6,7 @@ import { connect } from 'react-redux'
import actions from '../../../actions'
// import * as uploadActions from './upload.actions'
-import { DEFAULT_HEIGHT, WAVEFORM_HEIGHT, ZOOM_STEPS, ZOOM_LABEL_STEPS, ZOOM_TICK_STEPS } from '../constants'
+import { WAVEFORM_SIZE, ZOOM_STEPS, ZOOM_LABEL_STEPS, ZOOM_TICK_STEPS } from '../constants'
class Waveform extends Component {
constructor(props){
@@ -22,24 +22,24 @@ class Waveform extends Component {
}
resize() {
const canvas = this.canvasRef.current
- canvas.width = window.innerWidth
- canvas.height = DEFAULT_HEIGHT
+ canvas.width = WAVEFORM_SIZE
+ canvas.height = window.innerHeight
}
draw() {
const canvas = this.canvasRef.current
const ctx = canvas.getContext('2d')
- const w = window.innerWidth
- this.clearCanvas(ctx, w)
- this.drawCurve(ctx, w)
+ const h = window.innerHeight
+ this.clearCanvas(ctx, h)
+ this.drawCurve(ctx, h)
}
- clearCanvas(ctx, w) {
- const h = WAVEFORM_HEIGHT
+ clearCanvas(ctx, h) {
+ const w = WAVEFORM_SIZE
ctx.clearRect(0, 0, w, h)
ctx.fillStyle = 'rgba(0,0,0,0.5)'
ctx.fillRect(0, 0, w, h)
ctx.fillStyle = 'rgba(64,128,192,0.5)'
}
- drawCurve(ctx, w) {
+ drawCurve(ctx, h) {
let { peaks, timeline } = this.props
let { start_ts, zoom, duration } = timeline
@@ -47,7 +47,7 @@ class Waveform extends Component {
let stepsPerPixel = ZOOM_STEPS[zoom] // 0.1 sec / step
let indexesPerPixel = stepsPerPixel * 2
- let widthTimeDuration = window.innerWidth * secondsPerPixel // secs per pixel
+ let widthTimeDuration = h * secondsPerPixel // secs per pixel
let timeMin = start_ts
let timeMax = Math.min(start_ts + widthTimeDuration, duration)
@@ -58,26 +58,26 @@ class Waveform extends Component {
let i = 0
let step = stepMin
- let waveformPeak = WAVEFORM_HEIGHT / 2
+ let waveformPeak = WAVEFORM_SIZE / 2
let origin = (1 - peaks[step]) * waveformPeak
- let y = origin
+ let y
let peak
// console.log(0 * indexesPerPixel + stepMin, pixelWidth * indexesPerPixel + stepMin)
ctx.beginPath()
- ctx.moveTo(0, y)
+ ctx.moveTo(origin, 0)
for (i = 0; i < pixelWidth; i++) {
step = i * indexesPerPixel + stepMin
peak = peaks[step]
y = (1 - peak) * waveformPeak
- ctx.lineTo(i, y)
+ ctx.lineTo(y, i)
}
for (i = pixelWidth - 1; i > 0; i--) {
step = i * indexesPerPixel + stepMin
peak = peaks[step]
y = (1 + peak) * waveformPeak
- ctx.lineTo(i, y)
+ ctx.lineTo(y, i)
}
- ctx.lineTo(0, origin)
+ ctx.lineTo(origin, 0)
ctx.fillStyle = 'rgba(255,255,255,0.8)'
ctx.fill()
}