diff options
| author | Jules Laplace <julescarbon@gmail.com> | 2018-06-06 01:27:02 +0200 |
|---|---|---|
| committer | Jules Laplace <julescarbon@gmail.com> | 2018-06-06 01:27:02 +0200 |
| commit | 2538fbd5471a61d51742281df0e019a2dd4ea24e (patch) | |
| tree | 89f877a86205412b7bf044cd8034ee6c350f204c /app/client/audio | |
| parent | d3fcd1212f7214b12b04a83d03dfb129c5fbb0a4 (diff) | |
consolidate
Diffstat (limited to 'app/client/audio')
| -rw-r--r-- | app/client/audio/lib/_draw.js | 139 | ||||
| -rw-r--r-- | app/client/audio/lib/draw.js | 4 | ||||
| -rw-r--r-- | app/client/audio/wav2pix.js | 2 |
3 files changed, 3 insertions, 142 deletions
diff --git a/app/client/audio/lib/_draw.js b/app/client/audio/lib/_draw.js deleted file mode 100644 index 974fa62..0000000 --- a/app/client/audio/lib/_draw.js +++ /dev/null @@ -1,139 +0,0 @@ -import { - browser, requestAudioContext, - randint, randrange, clamp, mod, -} from './lib/util' - -import './lib/vendor/hidpi-canvas' - -import mouse from './lib/mouse' -import color from './lib/color' - -let w, h -let rx, ry - -const pixels_per_second = 512 // 1024 - -const canvas = document.createElement('canvas') -// document.body.appendChild(canvas) -// document.body.addEventListener('resize', resize) -resize() -recenter() -requestAnimationFrame(animate) - -// must request context after resizing -const ctx = canvas.getContext('2d') - -const scratch = document.createElement('canvas') -const scratchCtx = scratch.getContext('2d-lodpi') - -function resize(ww, hh){ - w = canvas.width = ww || window.innerWidth - h = canvas.height = hh || window.innerHeight - canvas.style.width = w + 'px' - canvas.style.height = h + 'px' -} -function recenter(){ - rx = randint(w), ry = randint(h) -} -let frame = null -function onFrame(fn){ - frame = fn -} -function animate(t){ - requestAnimationFrame(animate) - if (frame) { - frame(t) - frame = null - } - // ctx.save() - // ctx.globalAlpha = 0.0001 - // ctx.translate(w/2, h/2) - // ctx.rotate(0.1) - // ctx.translate(-rx, -ry) - // ctx.drawImage(canvas, 0, 0) - // ctx.restore() -} -function clear(n, x, y, ww, hh){ - ctx.fillStyle = 'rgba(255,255,255,' + (n || 0.9) + ')' - ctx.fillRect(x || 0, y || 0, ww || w, hh || h) - recenter() -} -function triangle(px,py,r){ - setTimeout( () => tri(px,py,r), Math.random()*10) - // setTimeout( () => tri(px,py,r), Math.random()*200) - // setTimeout( () => tri(px,py,r), Math.random()*300) -} -function tri(px, py, r) { - ctx.save() - ctx.globalCompositeOperation = 'multiply' - ctx.fillStyle = color.color((px+py)/(w+h), 0, 1, 0.2) - function p(){ - let theta = randrange(0, Math.PI*2) - let x = px + Math.cos(theta) * r - let y = py + Math.sin(theta) * r - return { x, y } - } - ctx.beginPath() - const p0 = p(), p1 = p(), p2 = p() - ctx.moveTo(p0.x, p0.y) - ctx.lineTo(p1.x, p1.y) - ctx.lineTo(p2.x, p2.y) - ctx.lineTo(p0.x, p0.y) - ctx.fill() - ctx.restore() -} -function line(y){ - ctx.beginPath() - ctx.moveTo(0, y) - ctx.lineTo(w, y) - ctx.strokeStyle = "#888" - ctx.strokeWidth = 1 - ctx.stroke() -} -function dot(x, y, r){ - ctx.fillStyle = "#f00" - ctx.beginPath() - ctx.moveTo(x, y) - ctx.arc(x, y, r, 0, 2*Math.PI) - ctx.fill() -} -function waveform(pcm, sr, pos, zoom){ - sr = sr || 44100 - pos = pos || 0 - - var width = w - var height = Math.floor(h/4) - var half_height = Math.floor(height/2) - var x0 = 0 - var y0 = 20 - var ymid = y0 + half_height - var max_width_in_seconds = width / pixels_per_second - var max_width_in_samples = max_width_in_seconds * sr - var pcm_length = pcm.length - var len = Math.min(pcm_length, max_width_in_samples) - var pcm_step = sr / pixels_per_second - var i - ctx.save() - - clear(1, x0, y0, width, height) - - line(ymid) - ctx.beginPath() - for (i = 0; i < width; i += 0.5) { - var si = Math.floor(pcm_step * i + pos) - if (si > pcm_length) break - var val = pcm[si] // -1, 1 - // ctx.moveTo(x0 + i, ymid) - ctx.lineTo(x0 + i, ymid + val * half_height) - } - ctx.strokeStyle = "rgba(250,20,0,0.9)" - ctx.strokeWidth = 1 - ctx.stroke() - ctx.restore() -} - -export default { - canvas, ctx, onFrame, resize, - triangle, clear, line, dot, - waveform, spectrum, raw_spectrum, -}
\ No newline at end of file diff --git a/app/client/audio/lib/draw.js b/app/client/audio/lib/draw.js index f5ba3ac..e523b6a 100644 --- a/app/client/audio/lib/draw.js +++ b/app/client/audio/lib/draw.js @@ -1,7 +1,7 @@ const scratch = document.createElement('canvas') const scratchCtx = scratch.getContext('2d-lodpi') -function spectrum(spec, x0, y0, ww, hh){ +export function spectrum(spec, x0, y0, ww, hh){ const data = spec.data const fft_size = spec.fft_size const half_fft_size = spec.fft_size / 2 @@ -56,7 +56,7 @@ function spectrum(spec, x0, y0, ww, hh){ ctx.restore() } -function raw_spectrum(spec, x0, y0, ww, hh, def_min_r, def_min_i){ +export function raw_spectrum(spec, x0, y0, ww, hh, def_min_r, def_min_i){ const data = spec.data const fft_size = spec.fft_size const half_fft_size = spec.fft_size / 2 diff --git a/app/client/audio/wav2pix.js b/app/client/audio/wav2pix.js index 089816d..e0a10fd 100644 --- a/app/client/audio/wav2pix.js +++ b/app/client/audio/wav2pix.js @@ -2,7 +2,7 @@ import Tone from 'tone' import JSZip from 'jszip' import FileSaver from 'file-saver' -import draw from './lib/draw' +import * as draw from './lib/draw' import output from './lib/output' import spectrum from './lib/spectrum' |
