/// <summary>
/// 数量级
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static int Magnitude(this double value)
{
if (value.Equals(0.0))
{
return(0);
}
double magnitude = Math.Log10(Math.Abs(value));
var truncated = (int)Math.Truncate(magnitude);
return(magnitude < 0d && truncated != magnitude
? truncated - 1
: truncated);
}
public void Refresh()
{
AudioSourceVisualizer audioSourceVisualizer;
try {
audioSourceVisualizer = target as AudioSourceVisualizer;
}
catch (System.Exception e) {
Debug.Log("Not ready");
return;
}
AudioSource audioSource = audioSourceVisualizer.source;
//First get the RMS of the audio channel as a whole
/*float[] intensityBins = new float[AudioSourceVisualizerEditor.samples];
* audioSource.GetOutputData(intensityBins, 0);
* float sum = 0;
* foreach(float sample in intensityBins) {
* sum += sample * sample; // sum squared samples
* }
* float rms = Mathf.Sqrt(sum / AudioSourceVisualizerEditor.samples); // rms = square root of average*/
float[] spectrumBins = new float[AudioSourceVisualizerEditor.samples];
audioSource.GetSpectrumData(spectrumBins, 0, FFTWindow.Rectangular);
int idx = 0;
foreach (VisualElement bin in bins)
{
double binRange = (double)idx / bins.Length;
int binIdx = (int)Math.Truncate(Math.Pow(10.0, binRange * 3.6 + 1.0) / Math.Pow(10.0, 4.6) * samples);
float db = 20 * Mathf.Log10(spectrumBins[binIdx] / 1.0e-6f); // calculate dB
float linear = Mathf.Clamp(db / 80.0f, 0.0f, 1.0f);
bin.style.height = linear * (AudioSourceVisualizerEditor.height - 2) + 2;
bin.style.backgroundColor = new Color(linear, 68.0f / 255.0f, 136.0f / 255.0f, 1.0f);
idx++;
}
}
public void Refresh()
{
BPMSource bpmSource;
try {
bpmSource = target as BPMSource;
}
catch (System.Exception e) {
Debug.Log("Not ready");
return;
}
double blinkValue = 1.0 - (bpmSource.beat - Math.Truncate(bpmSource.beat));
bpmIndicator.style.backgroundColor = new Color(0, 0, (float)blinkValue, 1);
bpmLabel.text = "BPM " + bpmSource.bpm;
double beat2 = Math.Truncate(bpmSource.beat * 100.0) / 100.0;
string beatFormatted = beat2.ToString("n2");
beatLabel.text = "B# " + beatFormatted;
}
public void Refresh()
{
AudioSourceVisualizer audioSourceVisualizer;
try {
audioSourceVisualizer = target as AudioSourceVisualizer;
}
catch (System.Exception e) {
Debug.Log("Not ready");
return;
}
AudioSource audioSource = audioSourceVisualizer.source;
AudioClip clip = audioSource.clip;
if (clip == null)
{
return; //Not ready
}
//First get the RMS of the audio channel as a whole
/*float[] intensityBins = new float[AudioSourceVisualizerEditor.samples];
* audioSource.GetOutputData(intensityBins, 0);
* float sum = 0;
* foreach(float sample in intensityBins) {
* sum += sample * sample; // sum squared samples
* }
* float rms = Mathf.Sqrt(sum / AudioSourceVisualizerEditor.samples); // rms = square root of average*/
float[] spectrumBins = new float[samples];
audioSource.GetSpectrumData(spectrumBins, 0, FFTWindow.Hanning);
System.Func <double, float> frequencyIntensity = (double freq) => {
if (freq > clip.frequency || freq < 0)
{
return(0); //No data for this frequency
}
//spectrumBins is in the range 0 - clip.frequency
int binIdx = (int)Math.Truncate(freq / clip.frequency * samples);
return(spectrumBins[binIdx]);
};
int idx = 0;
foreach (VisualElement bin in bins)
{
double binRange = (double)idx / bins.Length;
double sampleFreq;
if (audioSourceVisualizer.useLogScale)
{
double fMin10 = Math.Log10(frequencyMin);
double fMax10 = Math.Log10(clip.frequency);
//Map from linear space with bins.Length to log space with samples as length
sampleFreq = Math.Pow(10.0, binRange * (fMax10 - fMin10) + fMin10);
}
else
{
//Linear from frequencyMin to frequencyMax
sampleFreq = binRange * (clip.frequency -
frequencyMin) + frequencyMin;
}
float intensity = frequencyIntensity(sampleFreq);
float db = 20 * Mathf.Log10(intensity / 1.0e-6f); // calculate dB from linear getSpectrumData
float linear = Mathf.Clamp(db / 80.0f, 0.0f, 1.0f);
bin.style.height = linear * (AudioSourceVisualizerEditor.height - 2) + 2;
bin.style.backgroundColor = new Color(linear, 68.0f / 255.0f, 136.0f / 255.0f, 1.0f);
idx++;
}
//Update xAxis
xAxis.useLogScale = audioSourceVisualizer.useLogScale;
xAxis.frequencyMin = frequencyMin;
xAxis.frequencyMax = clip.frequency;
if (GetVisualizerWidth() != lastWidth)
{
xAxis.Redraw(); //Let it know it needs to redraw bc the width changed
}
lastWidth = GetVisualizerWidth();
}
