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document scope functions

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This commit is contained in:
Felix Roos 2023-11-05 22:43:37 +01:00
parent 52e2b90eef
commit 26d87b691c
1 changed files with 27 additions and 1 deletions
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28
packages/webaudio/scope.mjs
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@ -3,7 +3,7 @@ import { analyser, getAnalyzerData } from 'superdough';
export function drawTimeScope( export function drawTimeScope(
analyser, analyser,
{ align = true, color = 'white', thickness = 3, scale = 0.25, pos = 0.75, next = 1, trigger = 0 } = {}, { align = true, color = 'white', thickness = 3, scale = 0.25, pos = 0.75, trigger = 0 } = {},
) { ) {
const ctx = getDrawContext(); const ctx = getDrawContext();
const dataArray = getAnalyzerData('time'); const dataArray = getAnalyzerData('time');
@ -70,6 +70,18 @@ function clearScreen(smear = 0, smearRGB = `0,0,0`) {
} }
} }
/**
* Renders an oscilloscope for the frequency domain of the audio signal.
* @name fscope
* @param {string} color line color as hex or color name. defaults to white.
* @param {number} scale scales the y-axis. Defaults to 0.25
* @param {number} pos y-position relative to screen height. 0 = top, 1 = bottom of screen
* @param {number} lean y-axis alignment where 0 = top and 1 = bottom
* @param {number} min min value
* @param {number} max max value
* @example
* s("sawtooth").fscope()
*/
Pattern.prototype.fscope = function (config = {}) { Pattern.prototype.fscope = function (config = {}) {
return this.analyze(1).draw(() => { return this.analyze(1).draw(() => {
clearScreen(config.smear); clearScreen(config.smear);
@ -77,6 +89,20 @@ Pattern.prototype.fscope = function (config = {}) {
}); });
}; };
/**
* Renders an oscilloscope for the time domain of the audio signal.
* @name scope
* @synonyms tscope
* @param {object} config optional config with options:
* @param {boolean} align if 1, the scope will be aligned to the first zero crossing. defaults to 1
* @param {string} color line color as hex or color name. defaults to white.
* @param {number} thickness line thickness. defaults to 3
* @param {number} scale scales the y-axis. Defaults to 0.25
* @param {number} pos y-position relative to screen height. 0 = top, 1 = bottom of screen
* @param {number} trigger amplitude value that is used to align the scope. defaults to 0.
* @example
* s("sawtooth").scope()
*/
Pattern.prototype.tscope = function (config = {}) { Pattern.prototype.tscope = function (config = {}) {
return this.analyze(1).draw(() => { return this.analyze(1).draw(() => {
clearScreen(config.smear); clearScreen(config.smear);