public override Point[] GetSelectionPoints(ChartControl chartControl, ChartScale chartScale)
{
ChartPanel chartPanel = chartControl.ChartPanels[chartScale.PanelIndex];
Point entryPoint = EntryAnchor.GetPoint(chartControl, chartPanel, chartScale);
Point stopPoint = RiskAnchor.GetPoint(chartControl, chartPanel, chartScale);
if (!DrawTarget)
{
return new[] { entryPoint, stopPoint }
}
;
Point targetPoint = RewardAnchor.GetPoint(chartControl, chartPanel, chartScale);
return(new[] { entryPoint, stopPoint, targetPoint });
}
public override Cursor GetCursor(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, Point point)
{
switch (DrawingState)
{
case DrawingState.Building: return(Cursors.Pen);
case DrawingState.Moving: return(IsLocked ? Cursors.No : Cursors.SizeAll);
case DrawingState.Editing: return(IsLocked ? Cursors.No : (editingAnchor == EntryAnchor ? Cursors.SizeNESW : Cursors.SizeNWSE));
default:
// draw move cursor if cursor is near line path anywhere
Point entryAnchorPixelPoint = EntryAnchor.GetPoint(chartControl, chartPanel, chartScale);
// see if we are near an anchor right away. this is is cheap so no big deal to do often
ChartAnchor closest = GetClosestAnchor(chartControl, chartPanel, chartScale, cursorSensitivity, point);
if (closest != null)
{
return(IsLocked ? Cursors.Arrow : (closest == EntryAnchor ? Cursors.SizeNESW : Cursors.SizeNWSE));
}
Point stopAnchorPixelPoint = RiskAnchor.GetPoint(chartControl, chartPanel, chartScale);
Vector anchorsVector = stopAnchorPixelPoint - entryAnchorPixelPoint;
// see if the mouse is along one of our lines for moving
if (MathHelper.IsPointAlongVector(point, entryAnchorPixelPoint, anchorsVector, cursorSensitivity))
{
return(IsLocked ? Cursors.Arrow : Cursors.SizeAll);
}
if (!DrawTarget)
{
return(null);
}
Point targetPoint = RewardAnchor.GetPoint(chartControl, chartPanel, chartScale);
Vector targetToEntryVector = targetPoint - entryAnchorPixelPoint;
return(MathHelper.IsPointAlongVector(point, entryAnchorPixelPoint, targetToEntryVector, cursorSensitivity) ? (IsLocked ? Cursors.Arrow : Cursors.SizeAll) : null);
}
}
public override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
if (!IsVisible)
{
return;
}
if (Anchors.All(a => a.IsEditing))
{
return;
}
// this will be true right away to fix a restoral issue, so check if we really want to set reward
if (needsRatioUpdate && DrawTarget)
{
SetReward();
}
ChartPanel chartPanel = chartControl.ChartPanels[PanelIndex];
Point entryPoint = EntryAnchor.GetPoint(chartControl, chartPanel, chartScale);
Point stopPoint = RiskAnchor.GetPoint(chartControl, chartPanel, chartScale);
Point targetPoint = RewardAnchor.GetPoint(chartControl, chartPanel, chartScale);
AnchorLineStroke.RenderTarget = RenderTarget;
EntryLineStroke.RenderTarget = RenderTarget;
StopLineStroke.RenderTarget = RenderTarget;
// first of all, turn on anti-aliasing to smooth out our line
RenderTarget.AntialiasMode = SharpDX.Direct2D1.AntialiasMode.PerPrimitive;
RenderTarget.DrawLine(entryPoint.ToVector2(), stopPoint.ToVector2(), AnchorLineStroke.BrushDX, AnchorLineStroke.Width, AnchorLineStroke.StrokeStyle);
double anchorMinX = DrawTarget ? new[] { entryPoint.X, stopPoint.X, targetPoint.X }.Min() : new[] { entryPoint.X, stopPoint.X }.Min();
double anchorMaxX = DrawTarget ? new[] { entryPoint.X, stopPoint.X, targetPoint.X }.Max() : new[] { entryPoint.X, stopPoint.X }.Max();
double lineStartX = IsExtendedLinesLeft ? chartPanel.X : anchorMinX;
double lineEndX = IsExtendedLinesRight ? chartPanel.X + chartPanel.W : anchorMaxX;
SharpDX.Vector2 entryStartVector = new SharpDX.Vector2((float)lineStartX, (float)entryPoint.Y);
SharpDX.Vector2 entryEndVector = new SharpDX.Vector2((float)lineEndX, (float)entryPoint.Y);
SharpDX.Vector2 stopStartVector = new SharpDX.Vector2((float)lineStartX, (float)stopPoint.Y);
SharpDX.Vector2 stopEndVector = new SharpDX.Vector2((float)lineEndX, (float)stopPoint.Y);
// don't try and draw the target stuff until we have calculated the target
SharpDX.Direct2D1.Brush tmpBrush = IsInHitTest ? chartControl.SelectionBrush : AnchorLineStroke.BrushDX;
if (DrawTarget)
{
AnchorLineStroke.RenderTarget = RenderTarget;
RenderTarget.DrawLine(entryPoint.ToVector2(), targetPoint.ToVector2(), tmpBrush, AnchorLineStroke.Width, AnchorLineStroke.StrokeStyle);
TargetLineStroke.RenderTarget = RenderTarget;
SharpDX.Vector2 targetStartVector = new SharpDX.Vector2((float)lineStartX, (float)targetPoint.Y);
SharpDX.Vector2 targetEndVector = new SharpDX.Vector2((float)lineEndX, (float)targetPoint.Y);
tmpBrush = IsInHitTest ? chartControl.SelectionBrush : TargetLineStroke.BrushDX;
RenderTarget.DrawLine(targetStartVector, targetEndVector, tmpBrush, TargetLineStroke.Width, TargetLineStroke.StrokeStyle);
DrawPriceText(RewardAnchor, targetPoint, targetPrice, chartControl, chartPanel, chartScale);
}
tmpBrush = IsInHitTest ? chartControl.SelectionBrush : EntryLineStroke.BrushDX;
RenderTarget.DrawLine(entryStartVector, entryEndVector, tmpBrush, EntryLineStroke.Width, EntryLineStroke.StrokeStyle);
DrawPriceText(EntryAnchor, entryPoint, entryPrice, chartControl, chartPanel, chartScale);
tmpBrush = IsInHitTest ? chartControl.SelectionBrush : StopLineStroke.BrushDX;
RenderTarget.DrawLine(stopStartVector, stopEndVector, tmpBrush, StopLineStroke.Width, StopLineStroke.StrokeStyle);
DrawPriceText(RiskAnchor, stopPoint, stopPrice, chartControl, chartPanel, chartScale);
}
public override bool IsAlertConditionTrue(AlertConditionItem conditionItem, Condition condition, ChartAlertValue[] values, ChartControl chartControl, ChartScale chartScale)
{
// dig up which anchor we are running on to determine line
ChartAnchor chartAnchor = conditionItem.Tag as ChartAnchor;
if (chartAnchor == null)
{
return(false);
}
ChartPanel chartPanel = chartControl.ChartPanels[PanelIndex];
double alertY = chartScale.GetYByValue(chartAnchor.Price);
Point entryPoint = EntryAnchor.GetPoint(chartControl, chartPanel, chartScale);
Point stopPoint = RiskAnchor.GetPoint(chartControl, chartPanel, chartScale);
Point targetPoint = RewardAnchor.GetPoint(chartControl, chartPanel, chartScale);
double anchorMinX = DrawTarget ? new[] { entryPoint.X, stopPoint.X, targetPoint.X }.Min() : new[] { entryPoint.X, stopPoint.X }.Min();
double anchorMaxX = DrawTarget ? new[] { entryPoint.X, stopPoint.X, targetPoint.X }.Max() : new[] { entryPoint.X, stopPoint.X }.Max();
double lineStartX = IsExtendedLinesLeft ? chartPanel.X : anchorMinX;
double lineEndX = IsExtendedLinesRight ? chartPanel.X + chartPanel.W : anchorMaxX;
// first thing, if our smallest x is greater than most recent bar, we have nothing to do yet.
// do not try to check Y because lines could cross through stuff
double firstBarX = chartControl.GetXByTime(values[0].Time);
double firstBarY = chartScale.GetYByValue(values[0].Value);
if (lineEndX < firstBarX) // bars passed our drawing tool
{
return(false);
}
Point lineStartPoint = new Point(lineStartX, alertY);
Point lineEndPoint = new Point(lineEndX, alertY);
Point barPoint = new Point(firstBarX, firstBarY);
// NOTE: 'left / right' is relative to if line was vertical. it can end up backwards too
MathHelper.PointLineLocation pointLocation = MathHelper.GetPointLineLocation(lineStartPoint, lineEndPoint, barPoint);
// for vertical things, think of a vertical line rotated 90 degrees to lay flat, where it's normal vector is 'up'
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);
case Condition.CrossAbove:
case Condition.CrossBelow:
Predicate <ChartAlertValue> predicate = v =>
{
double barX = chartControl.GetXByTime(v.Time);
double barY = chartScale.GetYByValue(v.Value);
Point stepBarPoint = new Point(barX, barY);
// NOTE: 'left / right' is relative to if line was vertical. it can end up backwards too
MathHelper.PointLineLocation ptLocation = MathHelper.GetPointLineLocation(lineStartPoint, lineEndPoint, stepBarPoint);
if (condition == Condition.CrossAbove)
{
return(ptLocation == MathHelper.PointLineLocation.LeftOrAbove);
}
return(ptLocation == MathHelper.PointLineLocation.RightOrBelow);
};
return(MathHelper.DidPredicateCross(values, predicate));
}
return(false);
}