From 4aaea8a6fe04b98d2ec67ca49c4c1655e58f2b60 Mon Sep 17 00:00:00 2001
From: Jules Laplace <julescarbon@gmail.com>
Date: Sun, 28 Jun 2020 20:48:28 +0200
Subject: adding canvas, drawing tick timestamps based on zoom

---
 .../views/align/components/ticks.component.js      | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 animism-align/frontend/views/align/components/ticks.component.js

(limited to 'animism-align/frontend/views/align/components/ticks.component.js')

diff --git a/animism-align/frontend/views/align/components/ticks.component.js b/animism-align/frontend/views/align/components/ticks.component.js
new file mode 100644
index 0000000..3baa1f6
--- /dev/null
+++ b/animism-align/frontend/views/align/components/ticks.component.js
@@ -0,0 +1,83 @@
+import React, { Component } from 'react'
+
+import { ZOOM_STEPS, ZOOM_TICK_INTERVAL } from '../constants'
+import { timestamp } from '../../../util'
+
+export default class Ticks extends Component {
+  render() {
+    let { start_ts, zoom, duration } = this.props.timeline
+    start_ts = 65.0
+    duration /= 10
+    zoom = 2
+    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_STEPS[zoom] * 10 // secs
+    let pixelsPerTick = secondsPerTick * pixelTimeDuration
+    console.log('pixels per tick', pixelsPerTick)
+
+    let labelSpacing = pixelsPerTick
+    let subdivision = secondsPerTick
+    while (labelSpacing < 200) {
+      labelSpacing *= 2
+      subdivision *= 2
+    }
+
+    console.log('start ts', start_ts)
+    let pixelOffset = (start_ts / secondsPerPixel)
+    let pixelRemainder = pixelOffset % labelSpacing
+    // let startOffset = pixelsPerTick - (startTiming % pixelsPerTick)
+    let startOffset = labelSpacing - pixelRemainder
+    let startTiming = (pixelOffset + startOffset) * secondsPerPixel
+
+    let tickCount = Math.ceil(width / labelSpacing)
+    let offset, timing, tickLabels = [], ticks = []
+    for (var i = -1; i < tickCount; i++) {
+      offset = i * labelSpacing + startOffset
+      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>
+      )
+    }
+
+    // tickLabels.push(
+    //   <div className='tickLabel tickLabelTotal' key={"tickLabel_total"}
+    //     style={{
+    //       left: width
+    //     }}>
+    //     {timestamp(duration, 1)}
+    //   </div>
+    // )
+    // for (var i = 0; i < minuteCount; i += 1) {
+    //   offset = i * labelSpacing
+    //   timing = i * subdivision
+    //   ticks.push(
+    //     <div className='tick' key={"tick_" + i}
+    //       style={{
+    //         left: Math.floor(offset),
+    //       }}
+    //     />
+    //   )
+    // }
+    return (
+      <div className='ticks'>
+        {ticks}
+        {tickLabels}
+      </div>
+    )
+  }
+}
-- 
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