/// <summary>
/// Renders a chunk of points on the screen.
/// </summary>
/// <param name="context">Render context.</param>
/// <param name="points">Screen points.</param>
/// <returns>The list of resampled points.</returns>
protected virtual List <ScreenPoint> RenderScreenPoints(AreaRenderContext context, List <ScreenPoint> points)
{
var final = points;
if (context.Reverse)
{
final.Reverse();
}
if (this.Smooth)
{
var resampled = ScreenPointHelper.ResamplePoints(final, this.MinimumSegmentLength);
final = CanonicalSplineHelper.CreateSpline(resampled, 0.5, null, false, 0.25);
}
context.RenderContext.DrawClippedLine(
context.ClippingRect,
final,
context.MinDistSquared,
this.GetSelectableColor(context.Color),
this.StrokeThickness,
context.DashArray,
this.LineJoin,
false);
return(final);
}
/// <summary>
/// Renders the transformed points as a line (smoothed if <see cref="LineSeries.Smooth"/> is <c>true</c>) and markers (if <see cref="MarkerType"/> is not <c>None</c>).
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="clippingRect">The clipping rectangle.</param>
/// <param name="pointsToRender">The points to render.</param>
protected virtual void RenderLineAndMarkers(IRenderContext rc, OxyRect clippingRect, IList <ScreenPoint> pointsToRender)
{
var screenPoints = pointsToRender;
if (this.Smooth)
{
// spline smoothing (should only be used on small datasets)
var resampledPoints = ScreenPointHelper.ResamplePoints(pointsToRender, this.MinimumSegmentLength);
screenPoints = CanonicalSplineHelper.CreateSpline(resampledPoints, 0.5, null, false, 0.25);
}
// clip the line segments with the clipping rectangle
if (this.StrokeThickness > 0 && this.ActualLineStyle != LineStyle.None)
{
this.RenderLine(rc, clippingRect, screenPoints);
}
if (this.MarkerType != MarkerType.None)
{
var markerBinOffset = this.MarkerResolution > 0 ? this.Transform(this.MinX, this.MinY) : default(ScreenPoint);
rc.DrawMarkers(
clippingRect,
pointsToRender,
this.MarkerType,
this.MarkerOutline,
new[] { this.MarkerSize },
this.ActualMarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness,
this.MarkerResolution,
markerBinOffset);
}
}
/// <summary>
/// Renders the transformed points.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="clippingRect">
/// The clipping rectangle.
/// </param>
/// <param name="pointsToRender">
/// The points to render.
/// </param>
protected void RenderPoints(IRenderContext rc, OxyRect clippingRect, IList <ScreenPoint> pointsToRender)
{
var screenPoints = pointsToRender;
if (this.Smooth)
{
// spline smoothing (should only be used on small datasets)
var resampledPoints = ScreenPointHelper.ResamplePoints(pointsToRender, this.MinimumSegmentLength);
screenPoints = CanonicalSplineHelper.CreateSpline(resampledPoints, 0.5, null, false, 0.25);
}
// clip the line segments with the clipping rectangle
if (this.StrokeThickness > 0 && this.ActualLineStyle != LineStyle.None)
{
this.RenderSmoothedLine(rc, clippingRect, screenPoints);
}
if (this.MarkerType != MarkerType.None)
{
rc.DrawMarkers(
pointsToRender,
clippingRect,
this.MarkerType,
this.MarkerOutline,
new[] { this.MarkerSize },
this.MarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness);
}
}
protected sealed override void CreateImage()
{
base.CreateImage();
Rect bounds = new Rect(StrokeWidth / 2, StrokeWidth / 2,
CalculatedWidth - StrokeWidth,
CalculatedHeight - StrokeWidth);
Brush brush = Fill.GetBrush();
PointCollection points = GetPoints(bounds);
PathGeometry geometry = CanonicalSplineHelper.CreateSpline(points, Roundness / 100.0, null, true, true, 0.25);
Pen pen = GetPen();
DrawingVisual dv = new DrawingVisual();
DrawingContext dc = dv.RenderOpen();
// Draw polygon.
dc.DrawGeometry(brush, pen, geometry);
dc.Close();
RenderTargetBitmap rtb = RenderTargetBitmapUtility.CreateRenderTargetBitmap(CalculatedWidth, CalculatedHeight);
rtb.Render(dv);
Bitmap = new FastBitmap(rtb);
}
/// <summary>
/// The create solution geometry.
/// </summary>
/// <param name="solution">The solution.</param>
/// <param name="height">The height.</param>
/// <param name="diameter">The diameter.</param>
/// <returns>The solution tube geometry.</returns>
private MeshGeometry3D CreateSolutionGeometry(IEnumerable <Cell> solution, double height = 0.25, double diameter = 0.25)
{
var builder = new MeshBuilder();
var path = solution.Select(cell => this.GetPosition(cell, height)).ToList();
var spline = CanonicalSplineHelper.CreateSpline(path, 0.7, null, false, 0.05);
builder.AddTube(spline, diameter, 13, false);
return(builder.ToMesh());
}
/// <summary>
/// Calculate smooth points to detect Y-Values (WORKAROUND -> there should be better solution???)
/// </summary>
/// <param name="dataPoints"></param>
/// <returns></returns>
private List <DataPoint> CalculateSmoothedDataPoints(List <DataPoint> dataPoints)
{
//var wpfSeries = this.fanSpeedChart.Series[0] as OxyPlot.Wpf.LineSeries;
//OxyPlot.Series.LineSeries s = wpfSeries.InternalSeries as OxyPlot.Series.LineSeries;
double ToleranceDivisor = 200;
//double tolerance = Math.Abs(Math.Max(s.MaxX - s.MinX, s.MaxY - s.MinY) / ToleranceDivisor);
double tolerance = Math.Abs(Math.Max(100.0 - 0.0, 100.0 - 0.0) / ToleranceDivisor);
return(CanonicalSplineHelper.CreateSpline(dataPoints, 0.5, null, false, tolerance));
}
/// <summary>
/// Gets the screen points.
/// </summary>
/// <returns>The list of points to display on screen for this path.</returns>
protected override IList <ScreenPoint> GetScreenPoints()
{
var screenPoints = this.Points.Select(this.Transform).ToList();
if (this.Smooth)
{
var resampledPoints = ScreenPointHelper.ResamplePoints(screenPoints, this.MinimumSegmentLength);
return(CanonicalSplineHelper.CreateSpline(resampledPoints, 0.5, null, false, 0.25));
}
return(this.Points.Select(this.Transform).ToList());
}
/// <summary>
/// Renders data points from the specified index to the specified maximum x, skipping NaN values.
/// </summary>
/// <param name="actualPoints">Points list.</param>
/// <param name="chunksOfPoints">A list where chunks will be placed.</param>
/// <param name="startIndex">The start index of the points to render.</param>
/// <param name="maximumX">The maximum X coordinate to render.</param>
/// <param name="rc">Render context</param>
/// <param name="clippingRect">Clipping rectangle.</param>
/// <param name="minDistSquared">Minimal distance squared.</param>
/// <param name="reverse">Reverse points.</param>
/// <param name="color">Stroke color.</param>
private void RenderChunkedPoints(List <DataPoint> actualPoints, List <List <ScreenPoint> > chunksOfPoints, int startIndex, double maximumX, IRenderContext rc, OxyRect clippingRect, double minDistSquared, bool reverse, OxyColor color)
{
var dashArray = this.ActualDashArray;
var screenPoints = new List <ScreenPoint>();
Action <List <ScreenPoint> > finalizeChunk = list =>
{
var final = list;
if (reverse)
{
final.Reverse();
}
if (this.Smooth)
{
var resampled = ScreenPointHelper.ResamplePoints(final, this.MinimumSegmentLength);
final = CanonicalSplineHelper.CreateSpline(resampled, 0.5, null, false, 0.25);
}
chunksOfPoints.Add(final);
rc.DrawClippedLine(
clippingRect,
final,
minDistSquared,
this.GetSelectableColor(color),
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
};
int clipCount = 0;
for (int i = startIndex; i < actualPoints.Count; i++)
{
var point = actualPoints[i];
if (double.IsNaN(point.Y))
{
if (screenPoints.Count == 0)
{
continue;
}
finalizeChunk(screenPoints);
screenPoints = new List <ScreenPoint>();
}
else
{
var sp = this.XAxis.Transform(point.X, point.Y, this.YAxis);
screenPoints.Add(sp);
}
// We break after two points were seen beyond xMax to ensure glitch-free rendering.
clipCount += point.x > maximumX ? 1 : 0;
if (clipCount > 1)
{
break;
}
}
if (screenPoints.Count > 0)
{
finalizeChunk(screenPoints);
}
}
/// <summary>
/// Renders the series on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
/// <param name="model">The owner plot model.</param>
public override void Render(IRenderContext rc, PlotModel model)
{
var actualPoints = this.ActualPoints;
var actualPoints2 = this.ActualPoints2;
int n0 = actualPoints.Count;
if (n0 == 0)
{
return;
}
this.VerifyAxes();
double minDistSquared = this.MinimumSegmentLength * this.MinimumSegmentLength;
var clippingRect = this.GetClippingRect();
rc.SetClip(clippingRect);
// Transform all points to screen coordinates
IList <ScreenPoint> pts0 = new ScreenPoint[n0];
for (int i = 0; i < n0; i++)
{
pts0[i] = this.XAxis.Transform(actualPoints[i].X, actualPoints[i].Y, this.YAxis);
}
int n1 = actualPoints2.Count;
IList <ScreenPoint> pts1 = new ScreenPoint[n1];
for (int i = 0; i < n1; i++)
{
int j = this.Reverse2 ? n1 - 1 - i : i;
pts1[j] = this.XAxis.Transform(actualPoints2[i].X, actualPoints2[i].Y, this.YAxis);
}
if (this.Smooth)
{
var rpts0 = ScreenPointHelper.ResamplePoints(pts0, this.MinimumSegmentLength);
var rpts1 = ScreenPointHelper.ResamplePoints(pts1, this.MinimumSegmentLength);
pts0 = CanonicalSplineHelper.CreateSpline(rpts0, 0.5, null, false, 0.25);
pts1 = CanonicalSplineHelper.CreateSpline(rpts1, 0.5, null, false, 0.25);
}
var dashArray = this.ActualDashArray;
// draw the clipped lines
rc.DrawClippedLine(
clippingRect,
pts0,
minDistSquared,
this.GetSelectableColor(this.ActualColor),
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
rc.DrawClippedLine(
clippingRect,
pts1,
minDistSquared,
this.GetSelectableColor(this.ActualColor2),
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
// combine the two lines and draw the clipped area
var pts = new List <ScreenPoint>();
pts.AddRange(pts1);
pts.AddRange(pts0);
// pts = SutherlandHodgmanClipping.ClipPolygon(clippingRect, pts);
rc.DrawClippedPolygon(clippingRect, pts, minDistSquared, this.GetSelectableFillColor(this.ActualFill), OxyColors.Undefined);
var markerSizes = new[] { this.MarkerSize };
// draw the markers on top
rc.DrawMarkers(
clippingRect,
pts0,
this.MarkerType,
null,
markerSizes,
this.MarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness,
1);
rc.DrawMarkers(
clippingRect,
pts1,
this.MarkerType,
null,
markerSizes,
this.MarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness,
1);
rc.ResetClip();
}
/// <summary>
/// Force the smoothed points to be re-evaluated.
/// </summary>
protected virtual void ResetSmoothedPoints()
{
double tolerance = Math.Abs(Math.Max(this.MaxX - this.MinX, this.MaxY - this.MinY) / ToleranceDivisor);
this.smoothedPoints = CanonicalSplineHelper.CreateSpline(this.ActualPoints, 0.5, null, false, tolerance);
}
/// <summary>
/// Renders the series on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
public override void Render(IRenderContext rc)
{
var actualPoints = this.ActualPoints;
var actualPoints2 = this.points2;
int n0 = actualPoints.Count;
if (n0 == 0)
{
return;
}
this.VerifyAxes();
double minDistSquared = this.MinimumSegmentLength * this.MinimumSegmentLength;
var clippingRect = this.GetClippingRect();
rc.SetClip(clippingRect);
// Transform all points to screen coordinates
IList <ScreenPoint> pts0 = new List <ScreenPoint>();
for (int i = 0; i < n0; i++)
{
pts0.Add(this.XAxis.Transform(actualPoints[i].X, actualPoints[i].Y, this.YAxis));
}
int n1 = actualPoints2.Count;
IList <ScreenPoint> pts1 = new ScreenPoint[n1];
for (int i = 0; i < n1; i++)
{
int j = n1 - 1 - i;
pts1[j] = this.XAxis.Transform(actualPoints2[i].X, actualPoints2[i].Y, this.YAxis);
}
if (this.Smooth)
{
var rpts0 = ScreenPointHelper.ResamplePoints(pts0, this.MinimumSegmentLength);
// var rpts1 = ScreenPointHelper.ResamplePoints(pts1, this.MinimumSegmentLength);
pts0 = CanonicalSplineHelper.CreateSpline(rpts0, 0.5, null, false, 0.25);
// pts1 = CanonicalSplineHelper.CreateSpline(rpts1, 0.5, null, false, 0.25);
}
var dashArray = this.ActualDashArray;
var dashArray2 = this.ActualDashArray2;
var limit = this.YAxis.Transform(this.Limit);
if (limit < clippingRect.Top)
{
limit = clippingRect.Top;
}
if (limit > clippingRect.Bottom)
{
limit = clippingRect.Bottom;
}
var markerSizes = new[] { this.MarkerSize };
var bottom = clippingRect.Bottom;
var top = clippingRect.Top;
clippingRect.Top = limit;
clippingRect.Height = bottom - limit;
// draw the clipped lines belove the limit line
rc.DrawClippedLine(
clippingRect,
pts0,
minDistSquared,
this.GetSelectableColor(this.ActualColor2),
this.StrokeThickness,
dashArray2,
this.LineJoin,
false);
// combine the two lines and draw the clipped area
var pts = new List <ScreenPoint>();
pts.AddRange(pts1);
pts.AddRange(pts0);
// fill the area belove the limit line
rc.DrawClippedPolygon(clippingRect, pts, minDistSquared, this.GetSelectableFillColor(this.ActuallFill2), OxyColors.Undefined);
// draw the markers on line belove the limit line
rc.DrawMarkers(
clippingRect,
pts0,
this.MarkerType,
null,
markerSizes,
this.MarkerFill2,
this.MarkerStroke2,
this.MarkerStrokeThickness,
1);
clippingRect.Top = top;
clippingRect.Bottom = limit;
// draw the clipped lines above the limit line
rc.DrawClippedLine(
clippingRect,
pts0,
minDistSquared,
this.GetSelectableColor(this.ActualColor),
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
// fill the area above the limit line
rc.DrawClippedPolygon(clippingRect, pts, minDistSquared, this.GetSelectableFillColor(this.ActualFill), OxyColors.Undefined);
// draw the markers on line above the limit line
rc.DrawMarkers(
clippingRect,
pts0,
this.MarkerType,
null,
markerSizes,
this.MarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness,
1);
rc.ResetClip();
}
/// <summary>
/// Creates the positions for the specified line segments.
/// </summary>
/// <param name="points">
/// The key points of the spline.
/// </param>
/// <param name="thickness">
/// The thickness of the line.
/// </param>
/// <param name="depthOffset">
/// The depth offset. A positive number (e.g. 0.0001) moves the point towards the camera.
/// </param>
/// <param name="clipping">
/// The clipping.
/// </param>
/// <param name="tension">
/// The tension.
/// </param>
/// <param name="tolerance">
/// The tolerance.
/// </param>
/// <returns>
/// The positions collection.
/// </returns>
public Point3DCollection CreatePositions(
IList <Point3D> points,
double thickness = 1.0,
double depthOffset = 0.0,
CohenSutherlandClipping clipping = null,
double tension = 0.5,
double tolerance = 0.25,
bool isClosed = false
)
{
var halfThickness = thickness * 0.5;
var spoints = CanonicalSplineHelper.CreateSpline(points, tension, null, isClosed, tolerance);
var segmentCount = spoints.Count - 1;
var positions = new Point3DCollection(segmentCount * 4);
for (int i = 0; i < segmentCount; i++)
{
// int startIndex = i * 2;
var startPoint = spoints[i];
var endPoint = spoints[i + 1];
// Transform the start and end points to screen space
var s0 = (Point4D)startPoint * this.visualToScreen;
var s1 = (Point4D)endPoint * this.visualToScreen;
if (clipping != null)
{
// Apply a clipping rectangle
var x0 = s0.X / s0.W;
var y0 = s0.Y / s0.W;
var x1 = s1.X / s1.W;
var y1 = s1.Y / s1.W;
if (!clipping.ClipLine(ref x0, ref y0, ref x1, ref y1))
{
continue;
}
s0.X = x0 * s0.W;
s0.Y = y0 * s0.W;
s1.X = x1 * s1.W;
s1.Y = y1 * s1.W;
}
var lx = (s1.X / s1.W) - (s0.X / s0.W);
var ly = (s1.Y / s1.W) - (s0.Y / s0.W);
var l2 = (lx * lx) + (ly * ly);
var p00 = s0;
var p01 = s0;
var p10 = s1;
var p11 = s1;
if (l2.Equals(0))
{
// coinciding points (in world space or screen space)
var dz = halfThickness;
// TODO: make a square with the thickness as side length
p00.X -= dz * p00.W;
p00.Y -= dz * p00.W;
p01.X -= dz * p01.W;
p01.Y += dz * p01.W;
p10.X += dz * p10.W;
p10.Y -= dz * p10.W;
p11.X += dz * p11.W;
p11.Y += dz * p11.W;
}
else
{
var m = halfThickness / Math.Sqrt(l2);
// the normal (dx,dy)
var dx = -ly * m;
var dy = lx * m;
// segment start points
p00.X += dx * p00.W;
p00.Y += dy * p00.W;
p01.X -= dx * p01.W;
p01.Y -= dy * p01.W;
// segment end points
p10.X += dx * p10.W;
p10.Y += dy * p10.W;
p11.X -= dx * p11.W;
p11.Y -= dy * p11.W;
}
if (!depthOffset.Equals(0))
{
// Adjust the z-coordinate by the depth offset
p00.Z -= depthOffset;
p01.Z -= depthOffset;
p10.Z -= depthOffset;
p11.Z -= depthOffset;
// Transform from screen space to world space
p00 *= this.screenToVisual;
p01 *= this.screenToVisual;
p10 *= this.screenToVisual;
p11 *= this.screenToVisual;
positions.Add(new Point3D(p00.X / p00.W, p00.Y / p00.W, p00.Z / p00.W));
positions.Add(new Point3D(p01.X / p00.W, p01.Y / p01.W, p01.Z / p01.W));
positions.Add(new Point3D(p10.X / p00.W, p10.Y / p10.W, p10.Z / p10.W));
positions.Add(new Point3D(p11.X / p00.W, p11.Y / p11.W, p11.Z / p11.W));
}
else
{
// Transform from screen space to world space
p00 *= this.screenToVisual;
p01 *= this.screenToVisual;
p10 *= this.screenToVisual;
p11 *= this.screenToVisual;
positions.Add(new Point3D(p00.X, p00.Y, p00.Z));
positions.Add(new Point3D(p01.X, p01.Y, p01.Z));
positions.Add(new Point3D(p10.X, p10.Y, p10.Z));
positions.Add(new Point3D(p11.X, p11.Y, p11.Z));
}
}
positions.Freeze();
return(positions);
}
