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import React, { Component } from 'react'
import { ZOOM_STEPS, ZOOM_LABEL_STEPS, ZOOM_TICK_STEPS } from '../constants'
import { timestamp } from '../../../util'
export default class Ticks extends Component {
render() {
let { start_ts, zoom, duration } = this.props.timeline
duration /= 10
const width = window.innerWidth
let secondsPerPixel = ZOOM_STEPS[zoom] / 10 // 0.1 sec / step
let pixelTimeDuration = 1 / secondsPerPixel // secs per pixel
let widthTimeDuration = width / pixelTimeDuration // secs per pixel
console.log(secondsPerPixel, pixelTimeDuration)
console.log('width in seconds', widthTimeDuration)
let secondsPerTick = ZOOM_LABEL_STEPS[zoom] // secs
let pixelsPerLabel = secondsPerTick * pixelTimeDuration
let pixelsPerTick = ZOOM_TICK_STEPS[zoom]
console.log('pixels per label', pixelsPerLabel)
let subdivision = secondsPerTick
while (pixelsPerLabel < 200) {
pixelsPerLabel *= 2
pixelsPerTick *= 2
subdivision *= 2
}
if (subdivision > 60) {
}
console.log('start ts', start_ts)
let pixelOffset = (start_ts / secondsPerPixel)
let pixelRemainder = pixelOffset % pixelsPerLabel
let startOffset = pixelsPerLabel - pixelRemainder
let startTiming = (pixelOffset + startOffset) * secondsPerPixel
let labelCount = Math.ceil(width / pixelsPerLabel)
let offset, timing, tickLabels = [], ticks = []
for (var i = -1; i < labelCount; i++) {
offset = i * pixelsPerLabel + startOffset - 20
if (offset + 20 > width) continue
timing = i * subdivision + startTiming
if (timing > duration) {
break
}
tickLabels.push(
<div className='tickLabel' key={"tickLabel_" + i}
style={{
left: Math.floor(offset)
}}>
{timestamp(timing)}
</div>
)
}
let durationOffset = duration / secondsPerPixel - pixelOffset
if (timing > duration) {
tickLabels.push(
<div className='tickLabel tickLabelTotal' key={"tickLabel_total"}
style={{
left: durationOffset - 20
}}>
{timestamp(duration, 1)}
</div>
)
ticks.push(
<div className='tick' key={"tick_total"}
style={{
left: Math.floor(durationOffset),
}}
/>
)
}
let tickCount = Math.ceil(width / pixelsPerTick) + 1
for (var i = 0; i < tickCount; i += 1) {
offset = i * pixelsPerTick + startOffset - pixelsPerLabel
if (offset > durationOffset) {
break
}
ticks.push(
<div className='tick' key={"tick_" + i}
style={{
left: Math.floor(offset),
}}
/>
)
}
console.log(ticks.length)
return (
<div className='ticks'>
{ticks}
{tickLabels}
</div>
)
}
}
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