/// <summary>
/// Renders the minor items.
/// </summary>
/// <param name="axis">The axis.</param>
/// <param name="axisPosition">The axis position.</param>
protected virtual void RenderMinorItems(AxisBase axis, double axisPosition)
{
var eps = axis.ActualMinorStep * 1e-3;
var actualMinimum = axis.ActualMinimum;
var actualMaximum = axis.ActualMaximum;
var plotAreaLeft = Editor.CurveArea.Left;
var plotAreaRight = Editor.CurveArea.Right;
var plotAreaTop = Editor.CurveArea.Top;
var plotAreaBottom = Editor.CurveArea.Bottom;
var isHorizontal = axis.IsHorizontal();
double a0;
double a1;
var minorSegments = new List <Point>();
var minorTickSegments = new List <Point>();
GetTickPositions(axis, axis.TickStyle, axis.MinorTickSize, axis.Position, out a0, out a1);
foreach (var value in MinorTickValues)
{
if (value < actualMinimum - eps || value > actualMaximum + eps)
{
continue;
}
if (MajorTickValues.Contains(value))
{
continue;
}
var transformedValue = axis.Transform(value);
if (isHorizontal)
{
SnapTo(plotAreaLeft, ref transformedValue);
SnapTo(plotAreaRight, ref transformedValue);
}
else
{
SnapTo(plotAreaTop, ref transformedValue);
SnapTo(plotAreaBottom, ref transformedValue);
}
// Draw the minor grid line
if (isHorizontal)
{
minorSegments.Add(new Point(transformedValue, plotAreaTop));
minorSegments.Add(new Point(transformedValue, plotAreaBottom));
}
else
{
minorSegments.Add(new Point(plotAreaLeft, transformedValue));
minorSegments.Add(new Point(plotAreaRight, transformedValue));
}
// Draw the minor tick
if (axis.TickStyle != TickStyle.None && axis.MinorTickSize > 0)
{
if (isHorizontal)
{
minorTickSegments.Add(new Point(transformedValue, axisPosition + a0));
minorTickSegments.Add(new Point(transformedValue, axisPosition + a1));
}
else
{
minorTickSegments.Add(new Point(axisPosition + a0, transformedValue));
minorTickSegments.Add(new Point(axisPosition + a1, transformedValue));
}
}
}
// Draw all the line segments
DrawingContext.DrawLineSegments(minorSegments, MinorColor);
DrawingContext.DrawLineSegments(minorTickSegments, MinorTickColor);
}
public override void Render(Axis axis)
{
base.Render(axis);
var perpendicularAxis = Plot.DefaultXAxis;
bool isHorizontal = true;
// Axis position (x or y screen coordinate)
double apos = 0;
switch (axis.Position)
{
case AxisPosition.Left:
apos = Plot.PlotArea.Left;
isHorizontal = false;
break;
case AxisPosition.Right:
apos = Plot.PlotArea.Right;
isHorizontal = false;
break;
case AxisPosition.Top:
apos = Plot.PlotArea.Top;
perpendicularAxis = Plot.DefaultYAxis;
break;
case AxisPosition.Bottom:
apos = Plot.PlotArea.Bottom;
perpendicularAxis = Plot.DefaultYAxis;
break;
}
if (axis.PositionAtZeroCrossing)
{
apos = perpendicularAxis.Transform(0);
}
double a0, a1;
if (axis.ShowMinorTicks)
{
GetTickPositions(axis, axis.TickStyle, axis.MinorTickSize, axis.Position, out a0, out a1);
foreach (double value in MinorTickValues)
{
if (value < axis.ActualMinimum || value > axis.ActualMaximum)
{
continue;
}
if (MajorTickValues.Contains(value))
{
continue;
}
double transformedValue = axis.Transform(value);
if (MinorPen != null)
{
if (isHorizontal)
{
rc.DrawLine(transformedValue, Plot.PlotArea.Top, transformedValue, Plot.PlotArea.Bottom, MinorPen);
}
else
{
rc.DrawLine(Plot.PlotArea.Left, transformedValue, Plot.PlotArea.Right, transformedValue, MinorPen);
}
}
if (isHorizontal)
{
rc.DrawLine(transformedValue, apos + a0, transformedValue, apos + a1, MinorTickPen);
}
else
{
rc.DrawLine(apos + a0, transformedValue, apos + a1, transformedValue, MinorTickPen);
}
}
}
GetTickPositions(axis, axis.TickStyle, axis.MajorTickSize, axis.Position, out a0, out a1);
double maxWidth = 0;
double maxHeight = 0;
foreach (double value in MajorTickValues)
{
if (value < axis.ActualMinimum || value > axis.ActualMaximum)
{
continue;
}
double transformedValue = axis.Transform(value);
if (MajorPen != null)
{
if (isHorizontal)
{
rc.DrawLine(transformedValue, Plot.PlotArea.Top, transformedValue, Plot.PlotArea.Bottom, MajorPen);
}
else
{
rc.DrawLine(Plot.PlotArea.Left, transformedValue, Plot.PlotArea.Right, transformedValue, MajorPen);
}
}
if (isHorizontal)
{
rc.DrawLine(transformedValue, apos + a0, transformedValue, apos + a1, MajorTickPen);
}
else
{
rc.DrawLine(apos + a0, transformedValue, apos + a1, transformedValue, MajorTickPen);
}
if (value == 0 && axis.PositionAtZeroCrossing)
{
continue;
}
var pt = new ScreenPoint();
var ha = HorizontalTextAlign.Right;
var va = VerticalTextAlign.Middle;
switch (axis.Position)
{
case AxisPosition.Left:
pt = new ScreenPoint(apos + a1 - TICK_DIST, transformedValue);
GetRotatedAlignments(axis.Angle, HorizontalTextAlign.Right, VerticalTextAlign.Middle, out ha, out va);
break;
case AxisPosition.Right:
pt = new ScreenPoint(apos + a1 + TICK_DIST, transformedValue);
GetRotatedAlignments(axis.Angle, HorizontalTextAlign.Left, VerticalTextAlign.Middle, out ha, out va);
break;
case AxisPosition.Top:
pt = new ScreenPoint(transformedValue, apos + a1 - TICK_DIST);
GetRotatedAlignments(axis.Angle, HorizontalTextAlign.Center, VerticalTextAlign.Bottom, out ha, out va);
break;
case AxisPosition.Bottom:
pt = new ScreenPoint(transformedValue, apos + a1 + TICK_DIST);
GetRotatedAlignments(axis.Angle, HorizontalTextAlign.Center, VerticalTextAlign.Top, out ha, out va);
break;
}
string text = axis.FormatValue(value);
var size = rc.DrawMathText(pt, text, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
axis.Angle, ha, va);
maxWidth = Math.Max(maxWidth, size.Width);
maxHeight = Math.Max(maxHeight, size.Height);
}
if (axis.PositionAtZeroCrossing)
{
double t0 = axis.Transform(0);
if (isHorizontal)
{
rc.DrawLine(t0, Plot.PlotArea.Top, t0, Plot.PlotArea.Bottom, ZeroPen);
}
else
{
rc.DrawLine(Plot.PlotArea.Left, t0, Plot.PlotArea.Right, t0, ZeroPen);
}
}
if (axis.ExtraGridlines != null)
{
foreach (double value in axis.ExtraGridlines)
{
if (!IsWithin(value, axis.ActualMinimum, axis.ActualMaximum))
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
rc.DrawLine(transformedValue, Plot.PlotArea.Top, transformedValue, Plot.PlotArea.Bottom, ExtraPen);
}
else
{
rc.DrawLine(Plot.PlotArea.Left, transformedValue, Plot.PlotArea.Right, transformedValue, ExtraPen);
}
}
}
if (isHorizontal)
{
rc.DrawLine(Plot.PlotArea.Left, apos, Plot.PlotArea.Right, apos, MajorPen);
}
else
{
rc.DrawLine(apos, Plot.PlotArea.Top, apos, Plot.PlotArea.Bottom, MajorPen);
}
if (!String.IsNullOrWhiteSpace(axis.Title))
{
// Axis legend
double ymid = axis.Transform((axis.ActualMinimum + axis.ActualMaximum) / 2);
double angle = -90;
var lpt = new ScreenPoint();
var halign = HorizontalTextAlign.Center;
var valign = VerticalTextAlign.Top;
if (axis.PositionAtZeroCrossing)
{
ymid = perpendicularAxis.Transform(perpendicularAxis.ActualMaximum);
// valign = axis.IsReversed ? VerticalTextAlign.Top : VerticalTextAlign.Bottom;
}
switch (axis.Position)
{
case AxisPosition.Left:
lpt = new ScreenPoint(AXIS_LEGEND_DIST, ymid);
break;
case AxisPosition.Right:
lpt = new ScreenPoint(rc.Width - AXIS_LEGEND_DIST, ymid);
valign = VerticalTextAlign.Bottom;
break;
case AxisPosition.Top:
lpt = new ScreenPoint(ymid, AXIS_LEGEND_DIST);
halign = HorizontalTextAlign.Center;
valign = VerticalTextAlign.Top;
angle = 0;
break;
case AxisPosition.Bottom:
lpt = new ScreenPoint(ymid, rc.Height - AXIS_LEGEND_DIST);
halign = HorizontalTextAlign.Center;
valign = VerticalTextAlign.Bottom;
angle = 0;
break;
}
rc.DrawText(lpt, axis.Title, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
angle, halign, valign);
}
}