public virtual object Clone()
{
GannAngle newAngle = new GannAngle();
CopyTo(newAngle);
return(newAngle);
}
public virtual void CopyTo(GannAngle other)
{
other.IsVisible = IsVisible;
other.IsValueVisible = IsValueVisible;
if (Stroke != null)
{
other.Stroke = new Stroke();
Stroke.CopyTo(other.Stroke);
}
else
{
other.Stroke = null;
}
other.Tag = Tag;
other.RatioX = RatioX;
other.RatioY = RatioY;
}
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object component, Attribute[] attrs)
{
GannAngle gannAngle = component as GannAngle;
PropertyDescriptorCollection propertyDescriptorCollection = base.GetPropertiesSupported(context) ?
base.GetProperties(context, component, attrs) : TypeDescriptor.GetProperties(component, attrs);
if (gannAngle == null || propertyDescriptorCollection == null)
{
return(null);
}
PropertyDescriptorCollection filtered = new PropertyDescriptorCollection(null);
foreach (PropertyDescriptor property in propertyDescriptorCollection)
{
if ((property.Name != "Value" || gannAngle.IsValueVisible) && property.IsBrowsable)
{
filtered.Add(property);
}
}
return(filtered);
}
public override bool IsAlertConditionTrue(AlertConditionItem conditionItem, Condition condition, ChartAlertValue[] values, ChartControl chartControl, ChartScale chartScale)
{
GannAngle gannAngle = conditionItem.Tag as GannAngle;
if (gannAngle == null)
{
return(false);
}
ChartPanel chartPanel = chartControl.ChartPanels[PanelIndex];
Point anchorPoint = Anchor.GetPoint(chartControl, chartPanel, chartScale);
// dig out the line we're running on
double dx = gannAngle.RatioX * chartControl.Properties.BarDistance;
double dVal = chartScale.GetPixelsForDistance(gannAngle.RatioY * chartControl.Instrument.MasterInstrument.TickSize);
Point stepPoint = GetGannStepPoint(chartScale, anchorPoint.X, Anchor.Price, dx, dVal);
Point extendedEndPoint = GetExtendedPoint(anchorPoint, stepPoint);
if (values[0].ValueType == ChartAlertValueType.StaticTime)
{
int checkX = chartControl.GetXByTime(values[0].Time);
return(stepPoint.X >= checkX || stepPoint.X >= checkX);
}
double barX = chartControl.GetXByTime(values[0].Time);
double barY = chartScale.GetYByValue(values[0].Value);
Point barPoint = new Point(barX, barY);
// bars passed our drawing tool line
if (extendedEndPoint.X < barX)
{
return(false);
}
// bars not yet to our drawing tool line
if (stepPoint.X > barY)
{
return(false);
}
if (condition == Condition.CrossAbove || condition == Condition.CrossBelow)
{
Predicate <ChartAlertValue> predicate = v =>
{
// bar x/y
double bX = chartControl.GetXByTime(v.Time);
double bY = chartScale.GetYByValue(v.Value);
Point stepBarPoint = new Point(bX, bY);
// NOTE: 'left / right' is relative to if line was vertical. it can end up backwards too
MathHelper.PointLineLocation ptLocation = MathHelper.GetPointLineLocation(anchorPoint, extendedEndPoint, stepBarPoint);
if (condition == Condition.CrossAbove)
{
return(ptLocation == MathHelper.PointLineLocation.LeftOrAbove);
}
return(ptLocation == MathHelper.PointLineLocation.RightOrBelow);
};
return(MathHelper.DidPredicateCross(values, predicate));
}
MathHelper.PointLineLocation pointLocation = MathHelper.GetPointLineLocation(anchorPoint, extendedEndPoint, barPoint);
switch (condition)
{
case Condition.Greater: return(pointLocation == MathHelper.PointLineLocation.LeftOrAbove);
case Condition.GreaterEqual: return(pointLocation == MathHelper.PointLineLocation.LeftOrAbove || pointLocation == MathHelper.PointLineLocation.DirectlyOnLine);
case Condition.Less: return(pointLocation == MathHelper.PointLineLocation.RightOrBelow);
case Condition.LessEqual: return(pointLocation == MathHelper.PointLineLocation.RightOrBelow || pointLocation == MathHelper.PointLineLocation.DirectlyOnLine);
case Condition.Equals: return(pointLocation == MathHelper.PointLineLocation.DirectlyOnLine);
case Condition.NotEqual: return(pointLocation != MathHelper.PointLineLocation.DirectlyOnLine);
default: return(false);
}
}
