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binopan adjustments, get actor head size from the sprite

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minjaesong
2024-01-12 16:32:03 +09:00
parent a2f61a2be7
commit 3d71b5c619
6 changed files with 81 additions and 30 deletions
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26
src/net/torvald/terrarum/audio/dsp/BinoPan.kt
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@@ -7,7 +7,9 @@ import net.torvald.terrarum.App.printdbg
import net.torvald.terrarum.audio.AudioMixer
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.AUDIO_BUFFER_SIZE
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.SAMPLING_RATEF
import net.torvald.terrarum.audio.decibelsToFullscale
import net.torvald.terrarum.ceilToInt
import net.torvald.terrarum.ui.BasicDebugInfoWindow.Companion.COL_METER_GRAD
import net.torvald.terrarum.ui.BasicDebugInfoWindow.Companion.COL_METER_GRAD2
import net.torvald.terrarum.ui.BasicDebugInfoWindow.Companion.FILTER_NAME_ACTIVE
@@ -20,12 +22,14 @@ import kotlin.math.roundToInt
/**
* @param pan -1 for far-left, 0 for centre, 1 for far-right
* @param soundSpeed speed of the sound in meters per seconds
* @param earDist distance between ears in meters
* @param earDist distance between ears in meters. Maximum: 16.0
*/
class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter() {
class BinoPan(var pan: Float, var earDist: Float = EARDIST_DEFAULT): TerrarumAudioFilter() {
private val delayLineL = FloatArray(AUDIO_BUFFER_SIZE)
private val delayLineR = FloatArray(AUDIO_BUFFER_SIZE)
private val MAX_DELAY = (EARDIST_MAX / AudioMixer.SPEED_OF_SOUND * SAMPLING_RATEF).ceilToInt()
private val delayLineL = FloatArray(MAX_DELAY)
private val delayLineR = FloatArray(MAX_DELAY)
private fun getFrom(index: Float, buf0: FloatArray, buf1: FloatArray): Float {
@@ -42,6 +46,9 @@ class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter()
companion object {
const val EARDIST_DEFAULT = 0.18f
const val EARDIST_MAX = 16f
private val PANNING_CONST = 6.0
private const val L = 0
private const val R = 1
@@ -50,11 +57,14 @@ class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter()
}
/**
* @param angleOffset must be smaller than ±90 deg
*/
private fun thru(sym: String, angleOffset: Float, inbuf: FloatArray, sumbuf: Array<FloatArray>, delayLine: FloatArray) {
val pan = (pan + angleOffset / 90f).coerceIn(-1f, 1f)
val pan = (pan + angleOffset / (90f - angleOffset.absoluteValue)).coerceIn(-1f, 1f)
val timeDiffMax = earDist.coerceAtMost(EARDIST_MAX) / AudioMixer.SPEED_OF_SOUND * SAMPLING_RATEF
val angle = pan * HALF_PI
val timeDiffMax = earDist / AudioMixer.SPEED_OF_SOUND * TerrarumAudioMixerTrack.SAMPLING_RATEF
val delayInSamples = (timeDiffMax * FastMath.sin(angle)).absoluteValue
val volMultDbThis = PANNING_CONST * pan.absoluteValue
val volMultFsThis = decibelsToFullscale(volMultDbThis).toFloat()
@@ -87,8 +97,8 @@ class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter()
// printdbg(this, "$sym\tpan=$pan, mults=${mults[L]}\t${mults[R]}")
}
override fun thru(inbuf: List<FloatArray>, outbuf: List<FloatArray>) {
thru("L", -90f, inbuf[L], outLs, delayLineL)
thru("R", +90f, inbuf[R], outRs, delayLineR)
thru("L", -30f, inbuf[L], outLs, delayLineL)
thru("R", +30f, inbuf[R], outRs, delayLineR)
for (i in 0 until AUDIO_BUFFER_SIZE) {
val outL = (outLs[L][i] + outRs[L][i]) / 2f

9
src/net/torvald/terrarum/audio/dsp/TerrarumAudioFilter.kt
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@@ -19,6 +19,11 @@ abstract class TerrarumAudioFilter {
fun FloatArray.applyGain(gain: Float = 1f) = this.map { it * gain }.toFloatArray()
fun push(samples: FloatArray, buf: FloatArray) {
System.arraycopy(buf, samples.size, buf, 0, buf.size - samples.size)
System.arraycopy(samples, 0, buf, buf.size - samples.size, samples.size)
if (samples.size >= buf.size) {
System.arraycopy(samples, samples.size - buf.size, buf, 0, buf.size)
}
else {
System.arraycopy(buf, samples.size, buf, 0, buf.size - samples.size)
System.arraycopy(samples, 0, buf, buf.size - samples.size, samples.size)
}
}