/// <summary>
/// Overriden to perform dragging
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public override void OnDoDrag(object sender, Nevron.Chart.Windows.NMouseEventArgs e)
{
NChart chart = this.GetDocument().Charts[0];
Trace.WriteLine("X:" + e.X.ToString() + ", Y:" + e.Y.ToString());
NViewToScale3DTransformation viewToScale;
switch (m_DragPlaneSurface)
{
case DragPlaneSurface.XY:
viewToScale = new NViewToScale3DTransformation(chart, (int)StandardAxis.PrimaryX, (int)StandardAxis.PrimaryY, (int)StandardAxis.Depth, m_OriginalPosition.Z);
break;
case DragPlaneSurface.XZ:
viewToScale = new NViewToScale3DTransformation(chart, (int)StandardAxis.PrimaryX, (int)StandardAxis.Depth, (int)StandardAxis.PrimaryY, m_OriginalPosition.Y);
break;
case DragPlaneSurface.ZY:
viewToScale = new NViewToScale3DTransformation(chart, (int)StandardAxis.Depth, (int)StandardAxis.PrimaryY, (int)StandardAxis.PrimaryX, m_OriginalPosition.X);
break;
default:
Debug.Assert(false); // new drag plane
return;
}
NVector3DD vecNewPosition = new NVector3DD();
viewToScale.Transform(new NPointF(e.X, e.Y), ref vecNewPosition);
m_DragPlane.MovePoint(m_DragPlaneSurface, vecNewPosition, m_DataPointIndex);
m_DragPlane.PointSeries.Document.Refresh();
}
/// <summary>
/// Return true if dragging can start
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// <returns></returns>
public override bool CanBeginDrag(object sender, Nevron.Chart.Windows.NMouseEventArgs e)
{
object[] constLines = GetSelectedObjectsOfType(typeof(NAxisConstLine));
if (constLines.Length == 0)
{
return(false);
}
m_ConstLine = (NAxisConstLine)constLines[0];
m_OrgValue = m_ConstLine.Value;
return(true);
}
/// <summary>
/// Return true if dragging can start
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// <returns></returns>
public override bool CanBeginDrag(object sender, Nevron.Chart.Windows.NMouseEventArgs e)
{
if (!base.CanBeginDrag(sender, e))
{
return(false);
}
NPoint point = new NPoint(e.X, e.Y);
NPointSeries pointSeries = m_DragPlane.PointSeries;
NChart chart = pointSeries.Chart;
NModel3DToViewTransformation model3DToViewTransformation = new NModel3DToViewTransformation(GetView().Context, chart.Projection);
float xHotSpotArea = 10;
float yHotSpotArea = 10;
int dataPointIndex = -1;
for (int i = 0; i < pointSeries.Values.Count; i++)
{
double x = (double)pointSeries.XValues[i];
double y = (double)pointSeries.Values[i];
double z = (double)pointSeries.ZValues[i];
NVector3DF vecModelPoint;
vecModelPoint.X = chart.Axis(StandardAxis.PrimaryX).TransformScaleToModel(false, x);
vecModelPoint.Y = chart.Axis(StandardAxis.PrimaryY).TransformScaleToModel(false, y);
vecModelPoint.Z = chart.Axis(StandardAxis.Depth).TransformScaleToModel(false, z);
NPointF viewPoint = NPointF.Empty;
model3DToViewTransformation.Transform(vecModelPoint, ref viewPoint);
if (Math.Abs(viewPoint.X - point.X) < xHotSpotArea &&
Math.Abs(viewPoint.Y - point.Y) < yHotSpotArea)
{
dataPointIndex = i;
break;
}
}
if (dataPointIndex == -1)
{
return(false);
}
m_DataPointIndex = dataPointIndex;
m_OriginalPosition = m_DragPlane.GetVectorFromPoint(m_DataPointIndex);
return(true);
}
/// <summary>
/// Return true if dragging can start
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// <returns></returns>
public override bool CanBeginDrag(object sender, Nevron.Chart.Windows.NMouseEventArgs e)
{
if (!base.CanBeginDrag(sender, e))
{
return(false);
}
m_LastMousePosition = e;
int dataPointIndex = GetDataPointIndexFromPoint(new NPoint(e.X, e.Y));
if (dataPointIndex == -1)
{
return(false);
}
m_DataPointIndex = dataPointIndex;
m_OriginalPosition = m_DragPlane.GetVectorFromPoint(m_DataPointIndex);
return(true);
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public override void OnMouseMove(object sender, Nevron.Chart.Windows.NMouseEventArgs e)
{
base.OnMouseMove(sender, e);
m_LastMousePosition = e;
}