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tweaks to bounce

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This commit is contained in:
ZappoMan 2014-04-04 07:04:02 -07:00
parent f45f30234f
commit 4c0f83913b
1 changed files with 16 additions and 4 deletions
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20
interface/src/AudioReflector.cpp
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@ -38,12 +38,14 @@ int getDelayFromDistance(float distance) {
return MS_DELAY_PER_METER * distance;
}
const float BOUNCE_ATTENUATION_FACTOR = 0.125f;
// **option 1**: this is what we're using
const float PER_BOUNCE_ATTENUATION_FACTOR = 0.5f;
// **option 2**: we're not using these
const float BOUNCE_ATTENUATION_FACTOR = 0.125f;
// each bounce we adjust our attenuation by this factor, the result is an asymptotically decreasing attenuation...
// 0.125, 0.25, 0.5, ...
const float PER_BOUNCE_ATTENUATION_ADJUSTMENT = 2.0f;
// we don't grow larger than this, which means by the 4th bounce we don't get that much less quiet
const float MAX_BOUNCE_ATTENUATION = 0.99f;
@ -234,9 +236,12 @@ void AudioReflector::echoReflections(const glm::vec3& origin, const QVector<glm:
float rightDistance = 0;
float leftDistance = 0;
float bounceAttenuation = BOUNCE_ATTENUATION_FACTOR;
float bounceAttenuation = PER_BOUNCE_ATTENUATION_FACTOR;
int bounce = 0;
foreach (glm::vec3 end, reflections) {
bounce++;
rightDistance += glm::distance(start, end);
leftDistance += glm::distance(start, end);
@ -276,7 +281,10 @@ void AudioReflector::echoReflections(const glm::vec3& origin, const QVector<glm:
//qDebug() << "leftEarAttenuation=" << leftEarAttenuation << "rightEarAttenuation=" << rightEarAttenuation;
bounceAttenuation = std::min(MAX_BOUNCE_ATTENUATION, bounceAttenuation * PER_BOUNCE_ATTENUATION_ADJUSTMENT);
//qDebug() << "bounce=" << bounce <<
// "bounceAttenuation=" << bounceAttenuation;
//bounceAttenuationFactor = std::min(MAX_BOUNCE_ATTENUATION, bounceAttenuationFactor * PER_BOUNCE_ATTENUATION_ADJUSTMENT);
bounceAttenuation *= PER_BOUNCE_ATTENUATION_FACTOR;
// run through the samples, and attenuate them
for (int sample = 0; sample < totalNumberOfStereoSamples; sample++) {
@ -321,6 +329,8 @@ void AudioReflector::processSpatialAudio(unsigned int sampleTime, const QByteArr
_totalAttenuation = 0.0f;
_attenuationCount = 0;
QMutexLocker locker(&_mutex);
echoReflections(_origin, _frontRightUpReflections, samples, sampleTime, format.sampleRate());
echoReflections(_origin, _frontLeftUpReflections, samples, sampleTime, format.sampleRate());
echoReflections(_origin, _backRightUpReflections, samples, sampleTime, format.sampleRate());
@ -437,6 +447,8 @@ void AudioReflector::drawRays() {
downColor = RED;
}
QMutexLocker locker(&_mutex);
drawReflections(_origin, frontRightUpColor, _frontRightUpReflections);
drawReflections(_origin, frontLeftUpColor, _frontLeftUpReflections);
drawReflections(_origin, backRightUpColor, _backRightUpReflections);