/// <summary>
/// Renders the point labels.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="clippingRect">The clipping rectangle.</param>
protected void RenderPointLabels(IRenderContext rc, OxyRect clippingRect)
{
int index = -1;
foreach (var point in this.ActualPoints)
{
index++;
if (!this.IsValidPoint(point))
{
continue;
}
var pt = this.Transform(point) + new ScreenVector(0, -this.LabelMargin);
if (!clippingRect.Contains(pt))
{
continue;
}
var item = this.GetItem(index);
var s = StringHelper.Format(this.ActualCulture, this.LabelFormatString, item, point.X, point.Y);
#if SUPPORTLABELPLACEMENT
switch (this.LabelPlacement)
{
case LabelPlacement.Inside:
pt = new ScreenPoint(rect.Right - this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Right;
break;
case LabelPlacement.Middle:
pt = new ScreenPoint((rect.Left + rect.Right) / 2, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Center;
break;
case LabelPlacement.Base:
pt = new ScreenPoint(rect.Left + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
default: // Outside
pt = new ScreenPoint(rect.Right + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
}
#endif
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Center,
VerticalAlignment.Bottom);
}
}
public override void Render(IRenderContext rc,PlotModel modle1)
{
PlotModel model = this.PlotModel;
Axis axis = ((MapPlotModel)model).GetAxis(this.YKey);
rc.ResetClip();
if (!SeriesVisible || !((IAxis)axis).AxisVisible)
return;
if (_points.Count > 0)
{
if (!_performed)
{
double tip_font_size = 20;
string tip = this.Title;
OxySize size = rc.MeasureText(tip, this.ActualFont, tip_font_size);
OxyRect bound = ((IAxis)axis).Bound;
double y = bound.Top + (bound.Height-size.Height) / 2;
double x = (bound.Width - size.Width) / 2 + bound.Left;
rc.DrawText(new ScreenPoint(x, y), tip, this.Color, this.ActualFont, tip_font_size);
}
}
if (_iso_line.LineStrings.Count == 0 )
return;
OxyColor average_color = OxyColors.Green;
OxyColor limit_color = OxyColors.Red;
if (Theme != null)
{
LineSeriesStyle style = Theme.GetStyle(ThemeMode) as LineSeriesStyle;
this.Color = Helper.ConvertColorToOxyColor(style.LineColor);
average_color = Helper.ConvertColorToOxyColor(style.AverageColor);
limit_color = Helper.ConvertColorToOxyColor(style.AlarmColor);
}
OxyRect clippingRect = model.PlotArea;
for (int i = 0; i < _iso_line.LineStrings.Count; i++)
{
LineString line = _iso_line.LineStrings[i];
bool invalid = false;
if (line.VPoints.Count > 0)
{
for (int j = 0; j < line.VPoints.Count; j++)
{
double x = this.XAxis.Transform(line.VPoints[j].X);
double y = axis.Transform(line.VPoints[j].Y);
if (clippingRect.Contains(x, y))
{
invalid = true;
}
}
}
else
invalid = true;
if (!invalid)
continue;
if (line.Points.Count > 0)
{
IList<ScreenPoint> sps = new List<ScreenPoint>();
for (int j = 0; j < line.Points.Count; j++)
{
double x = this.XAxis.Transform(line.Points[j].X);
double y = axis.Transform(line.Points[j].Y);
sps.Add(new ScreenPoint(x, y));
}
if (line.Value >= 99999 || line.Value<-99999)
{
continue;
}
if (line.Value > DashLimit)
base.RenderLine(rc, clippingRect, sps, Color, this.LineWidth,this.LineStyle);
else
{
base.RenderLine(rc, clippingRect, sps, Color, this.LineWidth, LineStyle.Dash);
}
}
if (line.VPoints.Count > 0)
{
for (int j = 0; j < line.VPoints.Count; j++)
{
double x = this.XAxis.Transform(line.VPoints[j].X);
double y = axis.Transform(line.VPoints[j].Y);
if (clippingRect.Contains(x, y))
{
rc.DrawText(new ScreenPoint(x, y), line.Value.ToString("f1"), this.Color);
}
}
}
}
}
/// <summary>
/// The add contour labels.
/// </summary>
/// <param name="contour">The contour.</param>
/// <param name="pts">The points of the contour.</param>
/// <param name="clippingRect">The clipping rectangle.</param>
/// <param name="contourLabels">The contour labels.</param>
private void AddContourLabels(Contour contour, ScreenPoint[] pts, OxyRect clippingRect, ICollection<ContourLabel> contourLabels)
{
// todo: support label spacing and label step
if (pts.Length < 2)
{
return;
}
// Calculate position and angle of the label
double i = (pts.Length - 1) * 0.5;
var i0 = (int)i;
int i1 = i0 + 1;
double dx = pts[i1].X - pts[i0].X;
double dy = pts[i1].Y - pts[i0].Y;
double x = pts[i0].X + (dx * (i - i0));
double y = pts[i0].Y + (dy * (i - i0));
if (!clippingRect.Contains(x, y))
{
return;
}
var pos = new ScreenPoint(x, y);
double angle = Math.Atan2(dy, dx) * 180 / Math.PI;
if (angle > 90)
{
angle -= 180;
}
if (angle < -90)
{
angle += 180;
}
var formatString = string.Concat("{0:", this.LabelFormatString, "}");
string text = string.Format(this.ActualCulture, formatString, contour.ContourLevel);
contourLabels.Add(new ContourLabel { Position = pos, Angle = angle, Text = text });
}
/// <summary>
/// Renders the point labels.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="clippingRect">The clipping rectangle.</param>
protected void RenderPointLabels(IRenderContext rc, OxyRect clippingRect)
{
int index = -1;
foreach (var point in this.ActualPoints)
{
index++;
if (!this.IsValidPoint(point))
{
continue;
}
var pt = this.Transform(point) + new ScreenVector(0, -this.LabelMargin);
if (!clippingRect.Contains(pt))
{
continue;
}
var item = this.GetItem(index);
var s = this.Format(this.LabelFormatString, item, point.X, point.Y);
#if SUPPORTLABELPLACEMENT
switch (this.LabelPlacement)
{
case LabelPlacement.Inside:
pt = new ScreenPoint(rect.Right - this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Right;
break;
case LabelPlacement.Middle:
pt = new ScreenPoint((rect.Left + rect.Right) / 2, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Center;
break;
case LabelPlacement.Base:
pt = new ScreenPoint(rect.Left + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
default: // Outside
pt = new ScreenPoint(rect.Right + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
}
#endif
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Center,
VerticalAlignment.Bottom);
}
}
