private void RenderHorizontalAxis(Axis axis, Axis perpendicularAxis)
{
double y = Plot.Bounds.Bottom;
switch (axis.Position)
{
case AxisPosition.Top:
y = Plot.Bounds.Top;
break;
case AxisPosition.Bottom:
y = Plot.Bounds.Bottom;
break;
}
if (axis.PositionAtZeroCrossing)
{
y = perpendicularAxis.TransformX(0);
}
double y0, y1;
if (axis.ShowMinorTicks)
{
GetVerticalTickPositions(axis, axis.TickStyle, axis.MinorTickSize, out y0, out y1);
foreach (double xValue in minorTickValues)
{
if (xValue < axis.ActualMinimum || xValue > axis.ActualMaximum)
{
continue;
}
if (majorTickValues.Contains(xValue))
{
continue;
}
double x = axis.TransformX(xValue);
if (minorPen != null)
{
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, minorPen);
}
RenderLine(x, y + y0, x, y + y1, minorTickPen);
}
}
GetVerticalTickPositions(axis, axis.TickStyle, axis.MajorTickSize, out y0, out y1);
double maxh = 0;
bool istop = axis.Position == AxisPosition.Top;
foreach (double xValue in majorTickValues)
{
if (xValue < axis.ActualMinimum || xValue > axis.ActualMaximum)
{
continue;
}
double x = axis.TransformX(xValue);
if (majorPen != null)
{
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, majorPen);
}
RenderLine(x, y + y0, x, y + y1, majorTickPen);
if (xValue == 0 && axis.PositionAtZeroCrossing)
{
continue;
}
var pt = new ScreenPoint(x, istop ? y + y1 - TICK_DIST : y + y1 + TICK_DIST);
string text = axis.FormatValue(xValue);
double h = rc.MeasureText(text, axis.FontFamily, axis.FontSize, axis.FontWeight).Height;
rc.DrawText(pt, text, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
axis.Angle,
HorizontalTextAlign.Center, istop ? VerticalTextAlign.Bottom : VerticalTextAlign.Top);
maxh = Math.Max(maxh, h);
}
if (axis.PositionAtZeroCrossing)
{
double x = axis.TransformX(0);
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, zeroPen);
}
if (axis.ExtraGridlines != null)
{
foreach (double x in axis.ExtraGridlines)
{
if (!IsWithin(x, axis.ActualMinimum, axis.ActualMaximum))
{
continue;
}
double sx = axis.TransformX(x);
RenderLine(sx, Plot.Bounds.Top, sx, Plot.Bounds.Bottom, extraPen);
}
}
// The horizontal axis line
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, majorPen);
// The horizontal axis legend (centered horizontally)
double legendX = axis.TransformX((axis.ActualMinimum + axis.ActualMaximum) / 2);
HorizontalTextAlign halign = HorizontalTextAlign.Center;
VerticalTextAlign valign = VerticalTextAlign.Bottom;
if (axis.PositionAtZeroCrossing)
{
legendX = perpendicularAxis.TransformX(perpendicularAxis.ActualMaximum);
}
double legendY = rc.Height - AXIS_LEGEND_DIST;
if (istop)
{
legendY = AXIS_LEGEND_DIST;
valign = VerticalTextAlign.Top;
}
rc.DrawText(new ScreenPoint(legendX, legendY),
axis.Title, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight, 0, halign, valign);
}
private void RenderVerticalAxis(Axis axis, Axis perpendicularAxis)
{
double x = Plot.Bounds.Left;
switch (axis.Position)
{
case AxisPosition.Left:
x = Plot.Bounds.Left;
break;
case AxisPosition.Right:
x = Plot.Bounds.Right;
break;
}
if (axis.PositionAtZeroCrossing)
{
x = perpendicularAxis.TransformX(0);
}
double x0, x1;
if (axis.ShowMinorTicks)
{
GetHorizontalTickPositions(axis, axis.TickStyle, axis.MinorTickSize, out x0, out x1);
foreach (double yValue in minorTickValues)
{
if (yValue < axis.ActualMinimum || yValue > axis.ActualMaximum)
{
continue;
}
if (majorTickValues.Contains(yValue))
{
continue;
}
double y = axis.TransformX(yValue);
if (minorPen != null)
{
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, minorPen);
}
RenderLine(x + x0, y, x + x1, y, minorTickPen);
}
}
GetHorizontalTickPositions(axis, axis.TickStyle, axis.MajorTickSize, out x0, out x1);
double maxw = 0;
bool isleft = axis.Position == AxisPosition.Left;
foreach (double yValue in majorTickValues)
{
if (yValue < axis.ActualMinimum || yValue > axis.ActualMaximum)
{
continue;
}
double y = axis.TransformX(yValue);
if (majorPen != null)
{
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, majorPen);
}
RenderLine(x + x0, y, x + x1, y, majorTickPen);
if (yValue == 0 && axis.PositionAtZeroCrossing)
{
continue;
}
var pt = new ScreenPoint(isleft ? x + x1 - TICK_DIST : x + x1 + TICK_DIST, y);
string text = axis.FormatValue(yValue);
double w = rc.MeasureText(text, axis.FontFamily, axis.FontSize, axis.FontWeight).Height;
rc.DrawText(pt, text, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
axis.Angle,
isleft ? HorizontalTextAlign.Right : HorizontalTextAlign.Left, VerticalTextAlign.Middle);
maxw = Math.Max(maxw, w);
}
if (axis.PositionAtZeroCrossing)
{
double y = axis.TransformX(0);
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, zeroPen);
}
if (axis.ExtraGridlines != null)
{
foreach (double y in axis.ExtraGridlines)
{
if (!IsWithin(y, axis.ActualMinimum, axis.ActualMaximum))
{
continue;
}
double sy = axis.TransformX(y);
RenderLine(Plot.Bounds.Left, sy, Plot.Bounds.Right, sy, extraPen);
}
}
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, majorPen);
double ymid = axis.TransformX((axis.ActualMinimum + axis.ActualMaximum) / 2);
HorizontalTextAlign halign = HorizontalTextAlign.Center;
VerticalTextAlign valign = VerticalTextAlign.Top;
if (axis.PositionAtZeroCrossing)
{
ymid = perpendicularAxis.TransformX(perpendicularAxis.ActualMaximum);
// valign = axis.IsReversed ? VerticalTextAlign.Top : VerticalTextAlign.Bottom;
}
if (isleft)
{
x = AXIS_LEGEND_DIST;
}
else
{
x = rc.Width - AXIS_LEGEND_DIST;
valign = VerticalTextAlign.Bottom;
}
rc.DrawText(new ScreenPoint(x, ymid), axis.Title, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
-90, halign, valign);
}
private void RenderVerticalAxis(Axis axis, Axis perpendicularAxis)
{
double x = Plot.Bounds.Left;
switch (axis.Position)
{
case AxisPosition.Left:
x = Plot.Bounds.Left;
break;
case AxisPosition.Right:
x = Plot.Bounds.Right;
break;
}
if (axis.PositionAtZeroCrossing)
x = perpendicularAxis.TransformX(0);
double x0, x1;
if (axis.ShowMinorTicks)
{
GetHorizontalTickPositions(axis, axis.TickStyle, axis.MinorTickSize, out x0, out x1);
foreach (double yValue in minorTickValues)
{
if (yValue < axis.ActualMinimum || yValue > axis.ActualMaximum)
{
continue;
}
if (majorTickValues.Contains(yValue))
{
continue;
}
double y = axis.TransformX(yValue);
if (minorPen != null)
{
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, minorPen);
}
RenderLine(x + x0, y, x + x1, y, minorTickPen);
}
}
GetHorizontalTickPositions(axis, axis.TickStyle, axis.MajorTickSize, out x0, out x1);
double maxw = 0;
bool isleft = axis.Position == AxisPosition.Left;
foreach (double yValue in majorTickValues)
{
if (yValue < axis.ActualMinimum || yValue > axis.ActualMaximum)
continue;
double y = axis.TransformX(yValue);
if (majorPen != null)
{
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, majorPen);
}
RenderLine(x + x0, y, x + x1, y, majorTickPen);
if (yValue == 0 && axis.PositionAtZeroCrossing)
continue;
var pt = new ScreenPoint(isleft ? x + x1 - TICK_DIST : x + x1 + TICK_DIST, y);
string text = axis.FormatValue(yValue);
double w = rc.MeasureText(text, axis.FontFamily, axis.FontSize, axis.FontWeight).Height;
rc.DrawText(pt, text, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
axis.Angle,
isleft ? HorizontalTextAlign.Right : HorizontalTextAlign.Left, VerticalTextAlign.Middle);
maxw = Math.Max(maxw, w);
}
if (axis.PositionAtZeroCrossing)
{
double y = axis.TransformX(0);
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, zeroPen);
}
if (axis.ExtraGridlines != null)
foreach (double y in axis.ExtraGridlines)
{
if (!IsWithin(y, axis.ActualMinimum, axis.ActualMaximum))
continue;
double sy = axis.TransformX(y);
RenderLine(Plot.Bounds.Left, sy, Plot.Bounds.Right, sy, extraPen);
}
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, majorPen);
double ymid = axis.TransformX((axis.ActualMinimum + axis.ActualMaximum)/2);
HorizontalTextAlign halign = HorizontalTextAlign.Center;
VerticalTextAlign valign = VerticalTextAlign.Top;
if (axis.PositionAtZeroCrossing)
{
ymid = perpendicularAxis.TransformX(perpendicularAxis.ActualMaximum);
// valign = axis.IsReversed ? VerticalTextAlign.Top : VerticalTextAlign.Bottom;
}
if (isleft)
{
x = AXIS_LEGEND_DIST;
}
else
{
x = rc.Width - AXIS_LEGEND_DIST;
valign = VerticalTextAlign.Bottom;
}
rc.DrawText(new ScreenPoint(x, ymid), axis.Title, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
-90, halign, valign);
}
/// <summary>
/// Renders the major items.
/// </summary>
/// <param name="axis">
/// The axis.
/// </param>
/// <param name="axisPosition">
/// The axis position.
/// </param>
/// <param name="titlePosition">
/// The title position.
/// </param>
private void RenderMajorItems(Axis axis, double axisPosition, double titlePosition)
{
double eps = axis.ActualMinorStep * 1e-3;
double actualMinimum = axis.ActualMinimum;
double actualMaximum = axis.ActualMaximum;
double plotAreaLeft = this.Plot.PlotArea.Left;
double plotAreaRight = this.Plot.PlotArea.Right;
double plotAreaTop = this.Plot.PlotArea.Top;
double plotAreaBottom = this.Plot.PlotArea.Bottom;
bool isHorizontal = axis.IsHorizontal();
double a0;
double a1;
var majorSegments = new List <ScreenPoint>();
var majorTickSegments = new List <ScreenPoint>();
this.GetTickPositions(axis, axis.TickStyle, axis.MajorTickSize, axis.Position, out a0, out a1);
foreach (double value in this.MajorTickValues)
{
if (value < actualMinimum - eps || value > actualMaximum + eps)
{
continue;
}
if (axis.PositionAtZeroCrossing && Math.Abs(value) < eps)
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
SnapTo(plotAreaLeft, ref transformedValue);
SnapTo(plotAreaRight, ref transformedValue);
}
else
{
SnapTo(plotAreaTop, ref transformedValue);
SnapTo(plotAreaBottom, ref transformedValue);
}
if (this.MajorPen != null)
{
if (isHorizontal)
{
majorSegments.Add(new ScreenPoint(transformedValue, plotAreaTop));
majorSegments.Add(new ScreenPoint(transformedValue, plotAreaBottom));
}
else
{
majorSegments.Add(new ScreenPoint(plotAreaLeft, transformedValue));
majorSegments.Add(new ScreenPoint(plotAreaRight, transformedValue));
}
}
if (axis.TickStyle != TickStyle.None)
{
if (isHorizontal)
{
majorTickSegments.Add(new ScreenPoint(transformedValue, axisPosition + a0));
majorTickSegments.Add(new ScreenPoint(transformedValue, axisPosition + a1));
}
else
{
majorTickSegments.Add(new ScreenPoint(axisPosition + a0, transformedValue));
majorTickSegments.Add(new ScreenPoint(axisPosition + a1, transformedValue));
}
}
}
// Render the axis labels (numbers or category names)
foreach (double value in this.MajorLabelValues)
{
if (value < actualMinimum - eps || value > actualMaximum + eps)
{
continue;
}
if (axis.PositionAtZeroCrossing && Math.Abs(value) < eps)
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
SnapTo(plotAreaLeft, ref transformedValue);
SnapTo(plotAreaRight, ref transformedValue);
}
else
{
SnapTo(plotAreaTop, ref transformedValue);
SnapTo(plotAreaBottom, ref transformedValue);
}
var pt = new ScreenPoint();
var ha = HorizontalAlignment.Right;
var va = VerticalAlignment.Middle;
switch (axis.Position)
{
case AxisPosition.Left:
pt = new ScreenPoint(axisPosition + a1 - axis.AxisTickToLabelDistance, transformedValue);
this.GetRotatedAlignments(
axis.Angle, HorizontalAlignment.Right, VerticalAlignment.Middle, out ha, out va);
break;
case AxisPosition.Right:
pt = new ScreenPoint(axisPosition + a1 + axis.AxisTickToLabelDistance, transformedValue);
this.GetRotatedAlignments(
axis.Angle, HorizontalAlignment.Left, VerticalAlignment.Middle, out ha, out va);
break;
case AxisPosition.Top:
pt = new ScreenPoint(transformedValue, axisPosition + a1 - axis.AxisTickToLabelDistance);
this.GetRotatedAlignments(
axis.Angle, HorizontalAlignment.Center, VerticalAlignment.Bottom, out ha, out va);
break;
case AxisPosition.Bottom:
pt = new ScreenPoint(transformedValue, axisPosition + a1 + axis.AxisTickToLabelDistance);
this.GetRotatedAlignments(
axis.Angle, HorizontalAlignment.Center, VerticalAlignment.Top, out ha, out va);
break;
}
string text = axis.FormatValue(value);
this.rc.DrawMathText(
pt,
text,
axis.ActualTextColor,
axis.ActualFont,
axis.ActualFontSize,
axis.ActualFontWeight,
axis.Angle,
ha,
va);
}
// Draw the zero crossing line
if (axis.PositionAtZeroCrossing && this.ZeroPen != null)
{
double t0 = axis.Transform(0);
if (isHorizontal)
{
this.rc.DrawLine(t0, plotAreaTop, t0, plotAreaBottom, this.ZeroPen);
}
else
{
this.rc.DrawLine(plotAreaLeft, t0, plotAreaRight, t0, this.ZeroPen);
}
}
// Draw extra grid lines
if (axis.ExtraGridlines != null && this.ExtraPen != null)
{
foreach (double value in axis.ExtraGridlines)
{
if (!this.IsWithin(value, actualMinimum, actualMaximum))
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
this.rc.DrawLine(transformedValue, plotAreaTop, transformedValue, plotAreaBottom, this.ExtraPen);
}
else
{
this.rc.DrawLine(plotAreaLeft, transformedValue, plotAreaRight, transformedValue, this.ExtraPen);
}
}
}
// Draw the axis line (across the tick marks)
if (isHorizontal)
{
this.rc.DrawLine(
axis.Transform(actualMinimum),
axisPosition,
axis.Transform(actualMaximum),
axisPosition,
this.AxislinePen);
}
else
{
this.rc.DrawLine(
axisPosition,
axis.Transform(actualMinimum),
axisPosition,
axis.Transform(actualMaximum),
this.AxislinePen);
}
// Draw the axis title
if (!string.IsNullOrEmpty(axis.ActualTitle))
{
this.RenderAxisTitle(axis, titlePosition);
}
if (this.MajorPen != null)
{
this.rc.DrawLineSegments(majorSegments, this.MajorPen);
}
if (this.MajorTickPen != null)
{
this.rc.DrawLineSegments(majorTickSegments, this.MajorTickPen);
}
}
private void RenderHorizontalAxis(Axis axis, Axis perpendicularAxis)
{
double y = Plot.Bounds.Bottom;
switch (axis.Position)
{
case AxisPosition.Top:
y = Plot.Bounds.Top;
break;
case AxisPosition.Bottom:
y = Plot.Bounds.Bottom;
break;
}
if (axis.PositionAtZeroCrossing)
{
y = perpendicularAxis.TransformX(0);
}
double y0, y1;
if (axis.ShowMinorTicks)
{
GetVerticalTickPositions(axis, axis.TickStyle, axis.MinorTickSize, out y0, out y1);
foreach (double xValue in minorTickValues)
{
if (xValue < axis.ActualMinimum || xValue > axis.ActualMaximum)
{
continue;
}
if (majorTickValues.Contains(xValue))
{
continue;
}
double x = axis.TransformX(xValue);
if (minorPen != null)
{
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, minorPen);
}
RenderLine(x, y + y0, x, y + y1, minorTickPen);
}
}
GetVerticalTickPositions(axis, axis.TickStyle, axis.MajorTickSize, out y0, out y1);
double maxh = 0;
bool istop = axis.Position == AxisPosition.Top;
foreach (double xValue in majorTickValues)
{
if (xValue < axis.ActualMinimum || xValue > axis.ActualMaximum)
{
continue;
}
double x = axis.TransformX(xValue);
if (majorPen != null)
{
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, majorPen);
}
RenderLine(x, y + y0, x, y + y1, majorTickPen);
if (xValue == 0 && axis.PositionAtZeroCrossing)
continue;
var pt = new ScreenPoint(x, istop ? y + y1 - TICK_DIST : y + y1 + TICK_DIST);
string text = axis.FormatValue(xValue);
double h = rc.MeasureText(text, axis.FontFamily, axis.FontSize, axis.FontWeight).Height;
rc.DrawText(pt, text, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight,
axis.Angle,
HorizontalTextAlign.Center, istop ? VerticalTextAlign.Bottom : VerticalTextAlign.Top);
maxh = Math.Max(maxh, h);
}
if (axis.PositionAtZeroCrossing)
{
double x = axis.TransformX(0);
RenderLine(x, Plot.Bounds.Top, x, Plot.Bounds.Bottom, zeroPen);
}
if (axis.ExtraGridlines != null)
{
foreach (double x in axis.ExtraGridlines)
{
if (!IsWithin(x, axis.ActualMinimum, axis.ActualMaximum))
continue;
double sx = axis.TransformX(x);
RenderLine(sx, Plot.Bounds.Top, sx, Plot.Bounds.Bottom, extraPen);
}
}
// The horizontal axis line
RenderLine(Plot.Bounds.Left, y, Plot.Bounds.Right, y, majorPen);
// The horizontal axis legend (centered horizontally)
double legendX = axis.TransformX((axis.ActualMinimum + axis.ActualMaximum)/2);
HorizontalTextAlign halign = HorizontalTextAlign.Center;
VerticalTextAlign valign = VerticalTextAlign.Bottom;
if (axis.PositionAtZeroCrossing)
{
legendX = perpendicularAxis.TransformX(perpendicularAxis.ActualMaximum);
}
double legendY = rc.Height - AXIS_LEGEND_DIST;
if (istop)
{
legendY = AXIS_LEGEND_DIST;
valign = VerticalTextAlign.Top;
}
rc.DrawText(new ScreenPoint(legendX, legendY),
axis.Title, Plot.TextColor,
axis.FontFamily, axis.FontSize, axis.FontWeight, 0, halign, valign);
}
/// <summary>
/// Renders the specified axis.
/// </summary>
/// <param name="axis">The axis.</param>
/// <param name="pass">The render pass.</param>
/// <exception cref="System.InvalidOperationException">Magnitude axis not defined.</exception>
public override void Render(Axis axis, int pass)
{
base.Render(axis, pass);
var magnitudeAxis = this.Plot.DefaultMagnitudeAxis;
if (axis.RelatedAxis != null)
{
magnitudeAxis = axis.RelatedAxis as MagnitudeAxis;
}
if (magnitudeAxis == null)
{
throw new InvalidOperationException("Magnitude axis not defined.");
}
double eps = axis.MinorStep * 1e-3;
if (axis.ShowMinorTicks)
{
foreach (double value in this.MinorTickValues)
{
if (value < axis.ActualMinimum - eps || value > axis.ActualMaximum + eps)
{
continue;
}
if (this.MajorTickValues.Contains(value))
{
continue;
}
var pt = magnitudeAxis.Transform(magnitudeAxis.ActualMaximum, value, axis);
if (this.MinorPen != null)
{
this.rc.DrawLine(magnitudeAxis.MidPoint.x, magnitudeAxis.MidPoint.y, pt.x, pt.y, this.MinorPen, false);
}
}
}
var angleAxis = (AngleAxis)axis;
bool isFullCircle = Math.Abs(Math.Abs(angleAxis.EndAngle - angleAxis.StartAngle) - 360) < 1e-6;
foreach (double value in this.MajorTickValues)
{
// skip the last value (overlapping with the first)
if (isFullCircle && value > axis.ActualMaximum - eps)
{
continue;
}
if (value < axis.ActualMinimum - eps || value > axis.ActualMaximum + eps)
{
continue;
}
ScreenPoint pt = magnitudeAxis.Transform(magnitudeAxis.ActualMaximum, value, axis);
if (this.MajorPen != null)
{
this.rc.DrawLine(
magnitudeAxis.MidPoint.x, magnitudeAxis.MidPoint.y, pt.x, pt.y, this.MajorPen, false);
}
}
foreach (double value in this.MajorLabelValues)
{
// skip the last value (overlapping with the first)
if (isFullCircle && value > axis.ActualMaximum - eps)
{
continue;
}
var pt = magnitudeAxis.Transform(magnitudeAxis.ActualMaximum, value, axis);
double angle = Math.Atan2(pt.y - magnitudeAxis.MidPoint.y, pt.x - magnitudeAxis.MidPoint.x);
// add some margin
pt.x += Math.Cos(angle) * axis.AxisTickToLabelDistance;
pt.y += Math.Sin(angle) * axis.AxisTickToLabelDistance;
// Convert to degrees
angle *= 180 / Math.PI;
string text = axis.FormatValue(value);
var ha = HorizontalAlignment.Left;
var va = VerticalAlignment.Middle;
if (Math.Abs(Math.Abs(angle) - 90) < 10)
{
ha = HorizontalAlignment.Center;
va = angle > 90 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
angle = 0;
}
else if (angle > 90 || angle < -90)
{
angle -= 180;
ha = HorizontalAlignment.Right;
}
this.rc.DrawMathText(
pt, text, axis.ActualTextColor, axis.ActualFont, axis.ActualFontSize, axis.ActualFontWeight, angle, ha, va);
}
}
/// <summary>
/// Renders the major items.
/// </summary>
/// <param name="axis">
/// The axis.
/// </param>
/// <param name="axisPosition">
/// The axis position.
/// </param>
/// <param name="titlePosition">
/// The title position.
/// </param>
private void RenderMajorItems(Axis axis, double axisPosition, double titlePosition)
{
double eps = axis.ActualMinorStep * 1e-3;
double actualMinimum = axis.ActualMinimum;
double actualMaximum = axis.ActualMaximum;
double plotAreaLeft = this.Plot.PlotArea.Left;
double plotAreaRight = this.Plot.PlotArea.Right;
double plotAreaTop = this.Plot.PlotArea.Top;
double plotAreaBottom = this.Plot.PlotArea.Bottom;
bool isHorizontal = axis.IsHorizontal();
double a0;
double a1;
var majorSegments = new List<ScreenPoint>();
var majorTickSegments = new List<ScreenPoint>();
this.GetTickPositions(axis, axis.TickStyle, axis.MajorTickSize, axis.Position, out a0, out a1);
foreach (double value in this.MajorTickValues)
{
if (value < actualMinimum - eps || value > actualMaximum + eps)
{
continue;
}
if (axis.PositionAtZeroCrossing && Math.Abs(value) < eps)
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
SnapTo(plotAreaLeft, ref transformedValue);
SnapTo(plotAreaRight, ref transformedValue);
}
else
{
SnapTo(plotAreaTop, ref transformedValue);
SnapTo(plotAreaBottom, ref transformedValue);
}
if (this.MajorPen != null)
{
if (isHorizontal)
{
majorSegments.Add(new ScreenPoint(transformedValue, plotAreaTop));
majorSegments.Add(new ScreenPoint(transformedValue, plotAreaBottom));
}
else
{
majorSegments.Add(new ScreenPoint(plotAreaLeft, transformedValue));
majorSegments.Add(new ScreenPoint(plotAreaRight, transformedValue));
}
}
if (axis.TickStyle != TickStyle.None)
{
if (isHorizontal)
{
majorTickSegments.Add(new ScreenPoint(transformedValue, axisPosition + a0));
majorTickSegments.Add(new ScreenPoint(transformedValue, axisPosition + a1));
}
else
{
majorTickSegments.Add(new ScreenPoint(axisPosition + a0, transformedValue));
majorTickSegments.Add(new ScreenPoint(axisPosition + a1, transformedValue));
}
}
}
// Render the axis labels (numbers or category names)
foreach (double value in this.MajorLabelValues)
{
if (value < actualMinimum - eps || value > actualMaximum + eps)
{
continue;
}
if (axis.PositionAtZeroCrossing && Math.Abs(value) < eps)
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
SnapTo(plotAreaLeft, ref transformedValue);
SnapTo(plotAreaRight, ref transformedValue);
}
else
{
SnapTo(plotAreaTop, ref transformedValue);
SnapTo(plotAreaBottom, ref transformedValue);
}
var pt = new ScreenPoint();
var ha = HorizontalTextAlign.Right;
var va = VerticalTextAlign.Middle;
switch (axis.Position)
{
case AxisPosition.Left:
pt = new ScreenPoint(axisPosition + a1 - axis.AxisTickToLabelDistance, transformedValue);
this.GetRotatedAlignments(
axis.Angle, HorizontalTextAlign.Right, VerticalTextAlign.Middle, out ha, out va);
break;
case AxisPosition.Right:
pt = new ScreenPoint(axisPosition + a1 + axis.AxisTickToLabelDistance, transformedValue);
this.GetRotatedAlignments(
axis.Angle, HorizontalTextAlign.Left, VerticalTextAlign.Middle, out ha, out va);
break;
case AxisPosition.Top:
pt = new ScreenPoint(transformedValue, axisPosition + a1 - axis.AxisTickToLabelDistance);
this.GetRotatedAlignments(
axis.Angle, HorizontalTextAlign.Center, VerticalTextAlign.Bottom, out ha, out va);
break;
case AxisPosition.Bottom:
pt = new ScreenPoint(transformedValue, axisPosition + a1 + axis.AxisTickToLabelDistance);
this.GetRotatedAlignments(
axis.Angle, HorizontalTextAlign.Center, VerticalTextAlign.Top, out ha, out va);
break;
}
string text = axis.FormatValue(value);
this.rc.DrawMathText(
pt,
text,
axis.ActualTextColor,
axis.ActualFont,
axis.ActualFontSize,
axis.ActualFontWeight,
axis.Angle,
ha,
va);
}
// Draw the zero crossing line
if (axis.PositionAtZeroCrossing && this.ZeroPen != null)
{
double t0 = axis.Transform(0);
if (isHorizontal)
{
this.rc.DrawLine(t0, plotAreaTop, t0, plotAreaBottom, this.ZeroPen);
}
else
{
this.rc.DrawLine(plotAreaLeft, t0, plotAreaRight, t0, this.ZeroPen);
}
}
// Draw extra grid lines
if (axis.ExtraGridlines != null && this.ExtraPen != null)
{
foreach (double value in axis.ExtraGridlines)
{
if (!this.IsWithin(value, actualMinimum, actualMaximum))
{
continue;
}
double transformedValue = axis.Transform(value);
if (isHorizontal)
{
this.rc.DrawLine(transformedValue, plotAreaTop, transformedValue, plotAreaBottom, this.ExtraPen);
}
else
{
this.rc.DrawLine(plotAreaLeft, transformedValue, plotAreaRight, transformedValue, this.ExtraPen);
}
}
}
// Draw the axis line (across the tick marks)
if (isHorizontal)
{
this.rc.DrawLine(
axis.Transform(actualMinimum),
axisPosition,
axis.Transform(actualMaximum),
axisPosition,
this.AxislinePen);
}
else
{
this.rc.DrawLine(
axisPosition,
axis.Transform(actualMinimum),
axisPosition,
axis.Transform(actualMaximum),
this.AxislinePen);
}
// Draw the axis title
if (!string.IsNullOrEmpty(axis.ActualTitle))
{
this.RenderAxisTitle(axis, titlePosition);
}
if (this.MajorPen != null)
{
this.rc.DrawLineSegments(majorSegments, this.MajorPen);
}
if (this.MajorTickPen != null)
{
this.rc.DrawLineSegments(majorTickSegments, this.MajorTickPen);
}
}
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);
}
}
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);
}
}