static bool CurveDisplay(IAudioEffectPlugin plugin, Rect r0, ref float threshold, ref float ratio, ref float makeupGain, ref float attackTime, ref float releaseTime, ref float knee, float sidechainLevel, float outputLevel, float blend)
{
Event evt = Event.current;
int controlID = GUIUtility.GetControlID(FocusType.Passive);
Rect r = AudioCurveRendering.BeginCurveFrame(r0);
const float thresholdActiveWidth = 10f;
float vuWidth = 10f;
float minThreshold, maxThreshold, defThreshold;
plugin.GetFloatParameterInfo(kThresholdName, out minThreshold, out maxThreshold, out defThreshold);
float minRatio, maxRatio, defRatio;
plugin.GetFloatParameterInfo(kRatioName, out minRatio, out maxRatio, out defRatio);
float minMakeupGain, maxMakeupGain, defMakeupGain;
plugin.GetFloatParameterInfo(kMakeupGainName, out minMakeupGain, out maxMakeupGain, out defMakeupGain);
float minKnee, maxKnee, defKnee;
plugin.GetFloatParameterInfo(kKneeName, out minKnee, out maxKnee, out defKnee);
float dbRange = 100.0f, dbMin = -80.0f;
float thresholdPosX = r.width * (threshold - dbMin) / dbRange;
bool modifiedValue = false;
switch (evt.GetTypeForControl(controlID))
{
case EventType.MouseDown:
if (r.Contains(Event.current.mousePosition) && evt.button == 0)
{
dragtype = DragType.None;
GUIUtility.hotControl = controlID;
EditorGUIUtility.SetWantsMouseJumping(1);
evt.Use();
// Ensure visible state change on mousedown to make it clear that interaction is possible
if ((Mathf.Abs(r.x + thresholdPosX - evt.mousePosition.x) >= thresholdActiveWidth))
{
dragtype = (evt.mousePosition.x < r.x + thresholdPosX) ? DragType.MakeupGain : DragType.Ratio;
}
else
{
dragtype = DragType.ThresholdAndKnee;
}
}
break;
case EventType.MouseUp:
if (GUIUtility.hotControl == controlID && evt.button == 0)
{
dragtype = DragType.None;
GUIUtility.hotControl = 0;
EditorGUIUtility.SetWantsMouseJumping(0);
evt.Use();
AudioMixerEffectPlugin.OnParameterChangesDone();
}
break;
case EventType.MouseDrag:
if (GUIUtility.hotControl == controlID)
{
float dragAcceleration = evt.alt ? .25f : 1f;
if (dragtype == DragType.ThresholdAndKnee)
{
bool dragKnee = Mathf.Abs(evt.delta.x) < Mathf.Abs(evt.delta.y);
if (dragKnee)
{
knee = Mathf.Clamp(knee + evt.delta.y * 0.5f * dragAcceleration, minKnee, maxKnee);
}
else
{
threshold = Mathf.Clamp(threshold + evt.delta.x * 0.1f * dragAcceleration, minThreshold, maxThreshold);
}
}
else if (dragtype == DragType.Ratio)
{
ratio = Mathf.Clamp(ratio + evt.delta.y * (ratio > 1.0f ? 0.05f : 0.003f) * dragAcceleration, minRatio, maxRatio);
}
else if (dragtype == DragType.MakeupGain)
{
makeupGain = Mathf.Clamp(makeupGain - evt.delta.y * 0.5f * dragAcceleration, minMakeupGain, maxMakeupGain);
}
else
{
Debug.LogError("Drag: Unhandled enum");
}
modifiedValue = true;
evt.Use();
}
break;
}
if (evt.type == EventType.Repaint)
{
// Curve
HandleUtility.ApplyWireMaterial();
//float sidechainPosX = r.width * (sidechainLevel - dbMin) / dbRange;
float thresholdPosY = r.height * (1.0f - ((threshold - dbMin + makeupGain) / dbRange));
Color thresholdColor = new Color(0.7f, 0.7f, 0.7f);
Color sidechainColor = Color.black;
float duckGradient = 1.0f / ratio;
float duckThreshold = threshold;
float duckSidechainLevel = sidechainLevel;
float duckMakeupGain = makeupGain;
float duckKnee = knee;
float duckKneeC1 = (knee > 0.0f) ? ((duckGradient - 1.0f) / (4.0f * knee)) : 0.0f;
float duckKneeC2 = duckThreshold - knee;
// Main filled curve
AudioCurveRendering.DrawFilledCurve(
r,
delegate(float x, out Color col)
{
float level = x * dbRange + dbMin;
float gain = level;
float t = level - duckThreshold;
col = ScaleAlpha(duckSidechainLevel > level ? AudioCurveRendering.kAudioOrange : Color.grey, blend);
if (t > -duckKnee && t < duckKnee)
{
t += duckKnee;
gain = t * (duckKneeC1 * t + 1.0f) + duckKneeC2;
if (dragtype == DragType.ThresholdAndKnee)
{
const float mult = 1.2f;
col = new Color(col.r * mult, col.g * mult, col.b * mult);
}
}
else if (t > 0.0f)
{
gain = duckThreshold + duckGradient * t;
}
return((2.0f * (gain + duckMakeupGain - dbMin) / dbRange) - 1.0f);
}
);
// Curve shown when modifying MakeupGain
if (dragtype == DragType.MakeupGain)
{
AudioCurveRendering.DrawCurve(
r,
delegate(float x)
{
float level = x * dbRange + dbMin;
float gain = level;
float t = level - duckThreshold;
if (t > -duckKnee && t < duckKnee)
{
t += duckKnee;
gain = t * (duckKneeC1 * t + 1.0f) + duckKneeC2;
}
else if (t > 0.0f)
{
gain = duckThreshold + duckGradient * t;
}
return((2.0f * (gain + duckMakeupGain - dbMin) / dbRange) - 1.0f);
},
Color.white
);
}
// Threshold text and line
textStyle10.normal.textColor = ScaleAlpha(thresholdColor, blend);
EditorGUI.DrawRect(new Rect(r.x + thresholdPosX, r.y, 1, r.height), textStyle10.normal.textColor);
DrawText(r.x + thresholdPosX + 4, r.y + 6, string.Format(CultureInfo.InvariantCulture.NumberFormat, "Threshold: {0:F1} dB", threshold));
// Sidechain text and line
textStyle10.normal.textColor = ScaleAlpha(sidechainColor, blend);
DrawText(r.x + 4, r.y + r.height - 10, sidechainLevel < -80 ? "Input: None" : string.Format(CultureInfo.InvariantCulture.NumberFormat, "Input: {0:F1} dB", sidechainLevel));
if (dragtype == DragType.Ratio)
{
float aspect = r.height / r.width;
Handles.DrawAAPolyLine(2.0f,
new[] { Color.black, Color.black },
new[]
{
new Vector3(r.x + thresholdPosX + r.width, r.y + thresholdPosY - aspect * r.width, 0.0f),
new Vector3(r.x + thresholdPosX - r.width, r.y + thresholdPosY + aspect * r.width, 0.0f)
});
Handles.DrawAAPolyLine(3.0f,
new[] { Color.white, Color.white },
new[]
{
new Vector3(r.x + thresholdPosX + r.width, r.y + thresholdPosY - aspect * duckGradient * r.width, 0.0f),
new Vector3(r.x + thresholdPosX - r.width, r.y + thresholdPosY + aspect * duckGradient * r.width, 0.0f)
});
}
else if (dragtype == DragType.ThresholdAndKnee)
{
// Knee min and max lines
float normalizedKnee1 = (threshold - knee - dbMin) / dbRange;
float normalizedKnee2 = (threshold + knee - dbMin) / dbRange;
float y1 = EvaluateDuckingVolume(normalizedKnee1, ratio, threshold, makeupGain, knee, dbRange, dbMin);
float y2 = EvaluateDuckingVolume(normalizedKnee2, ratio, threshold, makeupGain, knee, dbRange, dbMin);
float knee1PosY = r.yMax - (y1 + 1f) * 0.5f * r.height;
float knee2PosY = r.yMax - (y2 + 1f) * 0.5f * r.height;
EditorGUI.DrawRect(new Rect(r.x + normalizedKnee1 * r.width, knee1PosY, 1, r.height - knee1PosY), new Color(0, 0, 0, 0.5f));
EditorGUI.DrawRect(new Rect(r.x + normalizedKnee2 * r.width - 1, knee2PosY, 1, r.height - knee2PosY), new Color(0, 0, 0, 0.5f));
// Enhanced threshold
EditorGUI.DrawRect(new Rect(r.x + thresholdPosX - 1, r.y, 3, r.height), Color.white);
}
outputLevel = (Mathf.Clamp(outputLevel - makeupGain, dbMin, dbMin + dbRange) - dbMin) / dbRange;
if (EditorApplication.isPlaying)
{
const int margin = 2;
Rect vuRect = new Rect(r.x + r.width - vuWidth + margin, r.y + margin, vuWidth - 2 * margin, r.height - 2 * margin);
DrawVU(vuRect, outputLevel, blend, true);
}
}
AudioCurveRendering.EndCurveFrame();
return(modifiedValue);
}
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:
// Signal
if (GUIUtility.hotControl == controlID && evt.button == 0)
{
GUIUtility.hotControl = 0;
EditorGUIUtility.SetWantsMouseJumping(0);
evt.Use();
AudioMixerEffectPlugin.OnParameterChangesDone();
}
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(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);
}