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public static Exp ( double omega ) : |
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| omega | double | |
| return | ||
static bool ParamEqualizerCurveEditor(IAudioEffectPlugin plugin, Rect r, ref float centerFreq, ref float bandwidth, ref float gain, float blend)
{
Event evt = Event.current;
int controlID = GUIUtility.GetControlID(FocusType.Passive);
r = AudioCurveRendering.BeginCurveFrame(r);
float minCenterFreq, maxCenterFreq, defCenterFreq; plugin.GetFloatParameterInfo(kCenterFreqName, out minCenterFreq, out maxCenterFreq, out defCenterFreq);
float minOctaveRange, maxOctaveRange, defOctaveRange; plugin.GetFloatParameterInfo(kOctaveRangeName, out minOctaveRange, out maxOctaveRange, out defOctaveRange);
float minGain, maxGain, defGain; plugin.GetFloatParameterInfo(kFrequencyGainName, out minGain, out maxGain, out defGain);
bool modifiedValue = false;
switch (evt.GetTypeForControl(controlID))
{
case EventType.MouseDown:
if (r.Contains(Event.current.mousePosition) && evt.button == 0)
{
GUIUtility.hotControl = controlID;
EditorGUIUtility.SetWantsMouseJumping(1);
evt.Use();
}
break;
case EventType.MouseUp:
if (GUIUtility.hotControl == controlID && evt.button == 0)
{
GUIUtility.hotControl = 0;
EditorGUIUtility.SetWantsMouseJumping(0);
evt.Use();
}
break;
case EventType.MouseDrag:
if (GUIUtility.hotControl == controlID)
{
float dragAcceleration = Event.current.alt ? .25f : 1f;
centerFreq = Mathf.Clamp((float)MapNormalizedFrequency(MapNormalizedFrequency(centerFreq, plugin.GetSampleRate(), useLogScale, false) + evt.delta.x / r.width, plugin.GetSampleRate(), useLogScale, true), minCenterFreq, maxCenterFreq);
if (Event.current.shift)
{
bandwidth = Mathf.Clamp(bandwidth - evt.delta.y * 0.02f * dragAcceleration, minOctaveRange, maxOctaveRange);
}
else
{
gain = Mathf.Clamp(gain - evt.delta.y * 0.01f * dragAcceleration, minGain, maxGain);
}
modifiedValue = true;
evt.Use();
}
break;
}
if (Event.current.type == EventType.Repaint)
{
// Mark CenterFreq with a vertical line
float c = (float)MapNormalizedFrequency(centerFreq, plugin.GetSampleRate(), useLogScale, false);
EditorGUI.DrawRect(new Rect(c * r.width + r.x, r.y, 1f, r.height), GUIUtility.hotControl == controlID ? new Color(0.6f, 0.6f, 0.6f) : new Color(0.4f, 0.4f, 0.4f));
// Curve
HandleUtility.ApplyWireMaterial();
double kPI = 3.1415926;
double wm = -2.0f * kPI / plugin.GetSampleRate();
double w0 = 2.0 * kPI * centerFreq / plugin.GetSampleRate();
double Q = 1.0 / bandwidth;
double A = gain;
double alpha = Math.Sin(w0) / (2.0 * Q);
double b0 = 1.0 + alpha * A;
double b1 = -2.0 * Math.Cos(w0);
double b2 = 1.0 - alpha * A;
double a0 = 1.0 + alpha / A;
double a1 = -2.0 * Math.Cos(w0);
double a2 = 1.0 - alpha / A;
AudioCurveRendering.DrawCurve(
r,
delegate(float x)
{
double f = MapNormalizedFrequency((double)x, plugin.GetSampleRate(), useLogScale, true);
ComplexD w = ComplexD.Exp(wm * f);
ComplexD n = w * (w * b2 + b1) + b0;
ComplexD d = w * (w * a2 + a1) + a0;
ComplexD h = n / d;
double mag = Math.Log10(h.Mag2());
return((float)(0.5 * mag)); // 20 dB range
},
ScaleAlpha(AudioCurveRendering.kAudioOrange, blend)
);
}
DrawFrequencyTickMarks(r, plugin.GetSampleRate(), useLogScale, new Color(1.0f, 1.0f, 1.0f, 0.3f * blend));
AudioCurveRendering.EndCurveFrame();
return(modifiedValue);
}
private static bool ParamEqualizerCurveEditor(IAudioEffectPlugin plugin, Rect r, ref float centerFreq, ref float bandwidth, ref float gain, float blend)
{
Event current = Event.current;
int controlID = GUIUtility.GetControlID(FocusType.Passive);
r = AudioCurveRendering.BeginCurveFrame(r);
float min;
float max;
float num;
plugin.GetFloatParameterInfo(ParamEqGUI.kCenterFreqName, out min, out max, out num);
float min2;
float max2;
float num2;
plugin.GetFloatParameterInfo(ParamEqGUI.kOctaveRangeName, out min2, out max2, out num2);
float min3;
float max3;
float num3;
plugin.GetFloatParameterInfo(ParamEqGUI.kFrequencyGainName, out min3, out max3, out num3);
bool result = false;
switch (current.GetTypeForControl(controlID))
{
case EventType.MouseDown:
if (r.Contains(Event.current.mousePosition) && current.button == 0)
{
GUIUtility.hotControl = controlID;
EditorGUIUtility.SetWantsMouseJumping(1);
current.Use();
}
break;
case EventType.MouseUp:
if (GUIUtility.hotControl == controlID && current.button == 0)
{
GUIUtility.hotControl = 0;
EditorGUIUtility.SetWantsMouseJumping(0);
current.Use();
}
break;
case EventType.MouseDrag:
if (GUIUtility.hotControl == controlID)
{
float num4 = (!Event.current.alt) ? 1f : 0.25f;
centerFreq = Mathf.Clamp((float)ParamEqGUI.MapNormalizedFrequency(ParamEqGUI.MapNormalizedFrequency((double)centerFreq, (double)plugin.GetSampleRate(), true, false) + (double)(current.delta.x / r.width), (double)plugin.GetSampleRate(), true, true), min, max);
if (Event.current.shift)
{
bandwidth = Mathf.Clamp(bandwidth - current.delta.y * 0.02f * num4, min2, max2);
}
else
{
gain = Mathf.Clamp(gain - current.delta.y * 0.01f * num4, min3, max3);
}
result = true;
current.Use();
}
break;
}
if (Event.current.type == EventType.Repaint)
{
float num5 = (float)ParamEqGUI.MapNormalizedFrequency((double)centerFreq, (double)plugin.GetSampleRate(), true, false);
EditorGUI.DrawRect(new Rect(num5 * r.width + r.x, r.y, 1f, r.height), (GUIUtility.hotControl != controlID) ? new Color(0.4f, 0.4f, 0.4f) : new Color(0.6f, 0.6f, 0.6f));
HandleUtility.ApplyWireMaterial();
double num6 = 3.1415926;
double wm = -2.0 * num6 / (double)plugin.GetSampleRate();
double num7 = 2.0 * num6 * (double)centerFreq / (double)plugin.GetSampleRate();
double num8 = 1.0 / (double)bandwidth;
double num9 = (double)gain;
double num10 = Math.Sin(num7) / (2.0 * num8);
double b0 = 1.0 + num10 * num9;
double b1 = -2.0 * Math.Cos(num7);
double b2 = 1.0 - num10 * num9;
double a0 = 1.0 + num10 / num9;
double a1 = -2.0 * Math.Cos(num7);
double a2 = 1.0 - num10 / num9;
AudioCurveRendering.DrawCurve(r, delegate(float x)
{
double num11 = ParamEqGUI.MapNormalizedFrequency((double)x, (double)plugin.GetSampleRate(), true, true);
ComplexD a = ComplexD.Exp(wm * num11);
ComplexD a2 = a * (a * b2 + b1) + b0;
ComplexD b = a * (a * a2 + a1) + a0;
ComplexD complexD = a2 / b;
double num12 = Math.Log10(complexD.Mag2());
return((float)(0.5 * num12));
}, ParamEqGUI.ScaleAlpha(AudioCurveRendering.kAudioOrange, blend));
}
ParamEqGUI.DrawFrequencyTickMarks(r, (float)plugin.GetSampleRate(), true, new Color(1f, 1f, 1f, 0.3f * blend));
AudioCurveRendering.EndCurveFrame();
return(result);
}
