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polarity-correct scope

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minjaesong
2023-11-22 00:29:44 +09:00
parent 3ff90655f6
commit 72dc444353
2 changed files with 11 additions and 4 deletions
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9
src/net/torvald/terrarum/audio/TerrarumAudioFilter.kt
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@@ -2,6 +2,7 @@ package net.torvald.terrarum.audio
import com.jme3.math.FastMath
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.BUFFER_SIZE
import net.torvald.terrarum.modulebasegame.ui.abs
import kotlin.math.tanh
abstract class TerrarumAudioFilter {
@@ -55,11 +56,11 @@ class Scope : TerrarumAudioFilter() {
// plot dots
for (i in 0 until BUFFER_SIZE/4) {
val x0 = inbuf1[0][i] * 0.7
val y0 = inbuf1[1][i] * 0.7
val y0 = inbuf1[0][i] * 0.7
val x0 = -inbuf1[1][i] * 0.7 // rotate the domain by -90 deg
val x = (x0*sqrt2p + y0*sqrt2p) * 1.414
val y = (x0*sqrt2p - y0*sqrt2p) * 1.414
val x = (+x0*sqrt2p -y0*sqrt2p) * 1.414
val y = (-x0*sqrt2p -y0*sqrt2p) * 1.414 // further rotate by -45 deg then flip along the y axis
backbufL[0][i] = x.toFloat()
backbufR[0][i] = y.toFloat()