/// <summary>
/// Updates the second points.
/// </summary>
/// <param name="xStart">The Start X Value</param>
/// <param name="yStart">The Start Y Value</param>
/// <param name="xEnd">The End X Value</param>
/// <param name="yEnd">The End Y Value</param>
/// <param name="leftThickness">The Left Thickness</param>
/// <param name="rightThickness">The Right Thickness</param>
private void UpdatePoints2(double xStart, double yStart, double xEnd, double yEnd, double leftThickness, double rightThickness)
{
LineSegment3D.GetLinePoints(xStart, yStart, xEnd, yEnd, leftThickness, rightThickness, point2);
bool isIntersecting = this.FindIntersectingPoint(
this.point1[0],
this.point1[1],
this.point1[2],
this.point1[3],
this.point2[0],
this.point2[1],
this.point2[2],
this.point2[3]);
if (isIntersecting)
{
var diff1 = this.intersectingPoint.X - this.point1[2];
var diff2 = this.point2[0] - this.point1[2];
bool canSwap = false;
if (diff1 < 0)
{
canSwap = diff1 >= -3;
}
else
{
canSwap = diff2 >= diff1 || (diff1 - diff2) <= 3;
}
if (canSwap)
{
this.point1[2] = this.intersectingPoint.X;
this.point1[3] = this.intersectingPoint.Y;
this.point2[0] = this.intersectingPoint.X;
this.point2[1] = intersectingPoint.Y;
this.point2[8] = this.intersectingPoint.X;
this.point2[9] = this.intersectingPoint.Y;
}
}
isIntersecting = this.FindIntersectingPoint(
this.point1[6],
this.point1[7],
this.point1[4],
this.point1[5],
this.point2[6],
this.point2[7],
this.point2[4],
this.point2[5]);
if (isIntersecting)
{
var diff1 = this.intersectingPoint.X - this.point1[4];
var diff2 = this.point2[6] - this.point1[4];
bool canSwap;
if (diff1 < 0)
{
canSwap = diff1 >= -3;
}
else
{
canSwap = diff2 >= diff1 || (diff1 - diff2) <= 3;
}
if (canSwap)
{
this.point1[4] = this.intersectingPoint.X;
this.point1[5] = this.intersectingPoint.Y;
this.point2[6] = this.intersectingPoint.X;
this.point2[7] = this.intersectingPoint.Y;
}
}
}
/// <summary>
/// Updates the segments based on its data point value. This method is not
/// intended to be called explicitly outside the Chart but it can be overridden by
/// any derived class.
/// </summary>
/// <param name="transformer">Represents the view port of chart control.(refer <see cref="IChartTransformer"/>)</param>
public override void Update(IChartTransformer transformer)
{
ChartTransform.ChartCartesianTransformer cartesianTransformer = transformer as ChartTransform.ChartCartesianTransformer;
if (cartesianTransformer != null)
{
Polygon3D bottomPolygon, topPolygon, startPolygon, endPolygon;
LineSeries3D lineSeries = Series as LineSeries3D;
if (this.area == null || this.xValues.Count == 1 || lineSeries.StrokeThickness == 0)
{
return;
}
var xBase = cartesianTransformer.XAxis.IsLogarithmic ? ((LogarithmicAxis3D)cartesianTransformer.XAxis).LogarithmicBase : 1;
var yBase = cartesianTransformer.YAxis.IsLogarithmic ? ((LogarithmicAxis3D)cartesianTransformer.YAxis).LogarithmicBase : 1;
var xIsLogarithmic = cartesianTransformer.XAxis.IsLogarithmic;
var yIsLogarithmic = cartesianTransformer.YAxis.IsLogarithmic;
double xStart = xIsLogarithmic ? Math.Pow(xBase, cartesianTransformer.XAxis.VisibleRange.Start) : cartesianTransformer.XAxis.VisibleRange.Start;
double xEnd = xIsLogarithmic ? Math.Pow(xBase, cartesianTransformer.XAxis.VisibleRange.End) : cartesianTransformer.XAxis.VisibleRange.End;
var yStart = yIsLogarithmic ? Math.Pow(yBase, cartesianTransformer.YAxis.VisibleRange.Start) : cartesianTransformer.YAxis.VisibleRange.Start;
var yEnd = yIsLogarithmic ? Math.Pow(yBase, cartesianTransformer.YAxis.VisibleRange.End) : cartesianTransformer.YAxis.VisibleRange.End;
// Clipping the line series 3D
if (xValues.Min() < xStart)
{
while (this.xValues[0] < xStart)
{
this.xValues.RemoveAt(0);
this.yValues.RemoveAt(0);
}
}
if (this.xValues.Max() > xEnd)
{
int index = this.xValues.IndexOf(xEnd);
while (this.xValues[index + 1] > xEnd)
{
this.xValues.RemoveAt(index + 1);
this.yValues.RemoveAt(index + 1);
if (index >= this.xValues.Count - 1)
{
break;
}
}
}
var indexes = from val in this.yValues.ToList() where (val <yStart || val> yEnd) select this.yValues.IndexOf(val);
if (this.yValues.Count - indexes.Count() < 2)
{
return;
}
if (indexes.Count() > 0)
{
foreach (var index in indexes)
{
if (yValues[index] < yStart)
{
this.yValues[index] = yStart;
}
else
{
this.yValues[index] = yEnd;
}
}
}
//// End of clipping logic
double x = this.xValues[0];
double y = !lineSeries.IsAnimated && !Series.EnableAnimation ? this.yValues[0] : (this.Y < this.yValues[0] && this.Y > 0) ? this.Y : this.yValues[0];
Point previousPoint = transformer.TransformToVisible(x, y);
Point currentPoint;
this.point2 = new double[10];
this.point1 = new double[10];
x = this.xValues[1];
y = !lineSeries.IsAnimated && !Series.EnableAnimation ? this.yValues[1] : (this.Y < this.yValues[1] && Y > 0) ? this.Y : this.yValues[1];
currentPoint = transformer.TransformToVisible(x, y);
int leftThickness = lineSeries.StrokeThickness / 2;
int rightThickness = (lineSeries.StrokeThickness % 2 == 0
? (lineSeries.StrokeThickness / 2) - 1
: lineSeries.StrokeThickness / 2);
LineSegment3D.GetLinePoints(previousPoint.X, previousPoint.Y, currentPoint.X, currentPoint.Y, leftThickness, rightThickness, this.point1);
int j = 0;
// To reset the polygon recycler collection index.
this.polygonRecycler.Reset();
for (int i = 1; i < this.yValues.Count;)
{
this.point2 = new double[10];
previousPoint = currentPoint;
bool isMultiColor = (Series.SegmentColorPath != null || Series.Palette != ChartColorPalette.None);
this.color = isMultiColor
? (Series.GetInteriorColor(i - 1))
: (this.Interior);
if (i == 1)
{
Vector3D[] startPolygonVects = new Vector3D[]
{
new Vector3D(this.point1[6], this.point1[7], startDepth),
new Vector3D(this.point1[6], this.point1[7], endDepth),
new Vector3D(this.point1[0], this.point1[1], endDepth),
new Vector3D(this.point1[0], this.point1[1], startDepth)
};
startPolygon = this.polygonRecycler.DequeuePolygon(startPolygonVects, this, Series.Segments.IndexOf(this), this.Stroke, this.StrokeThickness, this.color);
if (lineSeries.IsAnimated || !Series.EnableAnimation)
{
this.area.Graphics3D.AddVisual(startPolygon);
}
}
i++;
if (i < this.xValues.Count)
{
x = this.xValues[i];
y = !lineSeries.IsAnimated && !Series.EnableAnimation ? this.yValues[i] : (this.Y < this.yValues[i] && this.Y > 0) ? this.Y : this.yValues[i];
x = !(x >= xStart) ? xStart : !(x <= xEnd) ? xEnd : x;
y = !(y >= yStart) ? yStart : !(y <= yEnd) ? yEnd : y;
currentPoint = transformer.TransformToVisible(x, y);
this.UpdatePoints2(previousPoint.X, previousPoint.Y, currentPoint.X, currentPoint.Y, leftThickness, rightThickness);
}
Vector3D[] bottomPolyVects = new Vector3D[]
{
new Vector3D(this.point1[2], this.point1[3], startDepth),
new Vector3D(this.point1[0], this.point1[1], startDepth),
new Vector3D(this.point1[0], this.point1[1], endDepth),
new Vector3D(this.point1[2], this.point1[3], endDepth)
};
Vector3D[] topPolyVects = new Vector3D[]
{
new Vector3D(this.point1[6], this.point1[7], startDepth),
new Vector3D(this.point1[4], this.point1[5], startDepth),
new Vector3D(this.point1[4], this.point1[5], endDepth),
new Vector3D(this.point1[6], point1[7], endDepth)
};
bottomPolygon = new Polygon3D(
bottomPolyVects,
this,
Series.Segments.IndexOf(this),
Stroke,
StrokeThickness,
this.color);
bottomPolygon.CalcNormal(bottomPolyVects[0], bottomPolyVects[1], bottomPolyVects[2]);
bottomPolygon.CalcNormal();
topPolygon = new Polygon3D(
topPolyVects,
this,
Series.Segments.IndexOf(this),
Stroke,
StrokeThickness,
this.color);
topPolygon.CalcNormal(topPolyVects[0], topPolyVects[1], topPolyVects[2]);
topPolygon.CalcNormal();
if (lineSeries.IsAnimated || !Series.EnableAnimation)
{
this.area.Graphics3D.AddVisual(bottomPolygon);
this.area.Graphics3D.AddVisual(topPolygon);
this.RenderFrontPolygon(this.point1, this.startDepth, this.endDepth, this.color);
}
if (this.point2 != null && (i < this.xValues.Count))
{
this.point1 = this.point2;
}
j++;
}
Vector3D[] endPolyVects = new Vector3D[]
{
new Vector3D(this.point1[4], this.point1[5], startDepth),
new Vector3D(this.point1[4], this.point1[5], endDepth),
new Vector3D(this.point1[2], this.point1[3], endDepth),
new Vector3D(this.point1[2], this.point1[3], startDepth)
};
endPolygon = new Polygon3D(endPolyVects, this, 0, Stroke, 1, this.color);
endPolygon.CalcNormal(endPolyVects[0], endPolyVects[1], endPolyVects[2]);
endPolygon.CalcNormal();
if (lineSeries.IsAnimated || !Series.EnableAnimation)
{
this.area.Graphics3D.AddVisual(endPolygon);
}
}
}