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Code Issues Releases Wiki Activity

slightly diff spectogram / optimize

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This commit is contained in:
Cameron Taylor 2021-09-16 14:50:02 -04:00
parent a2eeaf5c3c
commit 4212e59937
2 changed files with 28 additions and 11 deletions
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2
source/ChartingState.hx
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@ -96,7 +96,7 @@ class ChartingState extends MusicBeatState
// sys.io.File.saveContent('./bitShit.txt', "swag"); // sys.io.File.saveContent('./bitShit.txt', "swag");
trace(audioBuf.sampleRate); // trace(audioBuf.sampleRate);
var spec:SpectogramSprite = new SpectogramSprite(); var spec:SpectogramSprite = new SpectogramSprite();
spec.scrollFactor.set(); spec.scrollFactor.set();

37
source/SpectogramSprite.hx
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@ -1,6 +1,8 @@
package; package;
import flixel.FlxSprite; import flixel.FlxSprite;
import flixel.group.FlxGroup;
import flixel.group.FlxSpriteGroup.FlxTypedSpriteGroup;
import flixel.math.FlxMath; import flixel.math.FlxMath;
import flixel.math.FlxPoint; import flixel.math.FlxPoint;
import flixel.util.FlxColor; import flixel.util.FlxColor;
@ -8,13 +10,25 @@ import lime.utils.Int16Array;
using flixel.util.FlxSpriteUtil; using flixel.util.FlxSpriteUtil;
class SpectogramSprite extends FlxSprite class SpectogramSprite extends FlxTypedSpriteGroup<FlxSprite>
{ {
public function new() public function new()
{ {
super(); super();
makeGraphic(200, 200, FlxColor.BLACK); for (i in 0...256)
{
var lineShit:FlxSprite = new FlxSprite(100, i / 256 * FlxG.height).makeGraphic(1, 1);
// lineShit.origin.set();
// var xClip = lineShit.clipRect;
// xClip.width = 1;
// lineShit.clipRect = xClip;
add(lineShit);
}
// makeGraphic(200, 200, FlxColor.BLACK);
} }
override function update(elapsed:Float) override function update(elapsed:Float)
@ -23,29 +37,32 @@ class SpectogramSprite extends FlxSprite
{ {
if (FlxG.sound.music.playing) if (FlxG.sound.music.playing)
{ {
FlxSpriteUtil.drawRect(this, 0, 0, width, height, 0x45000000); // FlxSpriteUtil.drawRect(this, 0, 0, width, height, 0x45000000);
@:privateAccess @:privateAccess
var audioData:Int16Array = FlxG.sound.music._channel.__source.buffer.data; // jank and hacky lol! var audioData:Int16Array = FlxG.sound.music._channel.__source.buffer.data; // jank and hacky lol!
var numSamples:Int = Std.int(audioData.length / 2); var numSamples:Int = Std.int(audioData.length / 2);
var remappedShit:Int = Std.int(FlxMath.remapToRange(FlxG.sound.music.time, 0, FlxG.sound.music.length, 0, numSamples)); var remappedShit:Int = Std.int(FlxMath.remapToRange(FlxG.sound.music.time, 0, FlxG.sound.music.length, 0, numSamples));
var i = remappedShit; var i = remappedShit;
var prevLine:FlxPoint = new FlxPoint(); var prevLine:FlxPoint = new FlxPoint();
var swagheight:Int = 200;
for (sample in remappedShit...remappedShit + 256) for (sample in remappedShit...remappedShit + 256)
{ {
var left = audioData[i] / 32767; var left = audioData[i] / 32767;
i += 2; i += 2;
var remappedSample:Float = FlxMath.remapToRange(sample, remappedShit, remappedShit + 256, 0, 1); var remappedSample:Float = FlxMath.remapToRange(sample, remappedShit, remappedShit + 256, 0, 255);
FlxSpriteUtil.drawLine(this, prevLine.x, prevLine.y, width * remappedSample, left * height / 2 + height / 2); group.members[Std.int(remappedSample)].x = prevLine.x;
prevLine.x = width * remappedSample; // group.members[0].y = prevLine.y;
prevLine.y = left * height / 2 + height / 2;
// FlxSpriteUtil.drawLine(this, prevLine.x, prevLine.y, width * remappedSample, left * height / 2 + height / 2);
prevLine.x = left * swagheight / 2 + swagheight / 2;
// width * (remappedSample / 255);
// prevLine.y = left * swagheight / 2 + swagheight / 2;
} }
} }
} }