// vert axis line is drawn topy to bottomy.
public float MapValueInverted(float value)
{
var topY = (GraphicsSize.Height * RangeStart) + Margins.Top;
var bottomY = (GraphicsSize.Height * RangeEnd) - Margins.Bottom;
var verticalRange = bottomY - topY;
var valueRange = ValueStart - ValueEnd;
float coordinate = LineGraphHelper.MapValueToExactCoordinate(
topY,
bottomY,
ValueStart,
ValueEnd,
value);
return(coordinate);
}
private void graphPanel_Paint(object sender, PaintEventArgs e)
{
try
{
if (Model == null)
{
return;
}
using (Graphics g = e.Graphics)
{
for (int fieldIdx = 0; fieldIdx < Model.FieldCount; fieldIdx++)
{
var field = Model.GetSeries(fieldIdx);
float minimumY = (field.YAxis.RangeStart * e.ClipRectangle.Height) + field.YAxis.Margins.Top;
float maximumY = (field.YAxis.RangeEnd * e.ClipRectangle.Height) - field.YAxis.Margins.Bottom;
float rangeY = maximumY - minimumY;
float startYPosition = field.YAxis.InvertRange ? -field.YAxis.EffectiveMaximum : field.YAxis.EffectiveMinimum;
float maxYPosition = field.YAxis.InvertRange ? -field.YAxis.EffectiveMinimum : field.YAxis.EffectiveMaximum;
float scalingRangeMinimum = field.YAxis.InvertRange ? -maximumY : minimumY;
float scalingRangeMaximum = field.YAxis.InvertRange ? -minimumY : maximumY;
float scalingValuesMinimum = field.YAxis.InvertRange ? -field.YAxis.EffectiveMinimum : field.YAxis.EffectiveMinimum;
float scalingValuesMaximum = field.YAxis.InvertRange ? -field.YAxis.EffectiveMaximum : field.YAxis.EffectiveMaximum;
if (field.ShowMaximumWarning)
{
using (Pen maxWarningPen = new Pen(field.Color, field.LineThickness)
{
DashPattern = new float[] { 4.0F, 2.0F }
})
{
var maxWarningY = LineGraphHelper.Scale(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, field.MaxWarning.GetValueOrDefault(0));
g.DrawLine(maxWarningPen, 0, maxWarningY, graphPanel.Width, maxWarningY);
}
}
if (field.ShowMinimumWarning)
{
using (Pen minWarningPen = new Pen(field.Color, field.LineThickness)
{
DashPattern = new float[] { 4.0F, 2.0F }
})
{
var minWarningY = LineGraphHelper.Scale(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, field.MinWarning.GetValueOrDefault(1));
g.DrawLine(minWarningPen, 0, minWarningY, graphPanel.Width, minWarningY);
}
}
using (Pen pen = new Pen(field.Color, field.LineThickness))
{
float xScale = (float)Model.FrameCount / (float)graphPanel.Width;
float newX = 0;
float val = Model.GetValue(_selectedLap, 0, fieldIdx);
float newY = LineGraphHelper.Scale(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, val);
float lastPointX = newX;
float lastPointY = newY;
for (int frameidx = 1; frameidx < Model.FrameCount; frameidx++)
{
newX = xScale * frameidx;
val = Model.GetValue(_selectedLap, frameidx, fieldIdx);
newY = LineGraphHelper.Scale(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, val);
g.DrawLine(pen, lastPointX, lastPointY, newX, newY);
lastPointX = newX;
lastPointY = newY;
}
}
}
using (Pen selectedFramePen = new Pen(Color.Gray, 1F))
{
float selectedFrameX = graphPanel.Width * _selectedFramePercent;
g.DrawLine(selectedFramePen, selectedFrameX, 0, selectedFrameX, graphPanel.Height);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
private AxisPrintCoordinates GetPrintCoordinates(Size printArea, int offset)
{
Size actualyPrintArea = new Size(printArea.Width - offset, printArea.Height);
AxisPrintCoordinates c = new AxisPrintCoordinates();
c.offset = offset;
// minimum X coordinate (starts at zero)
c.minimumX = Margins.Left;
// maximum X coordinate
c.maximumX = actualyPrintArea.Width - Margins.Right;
// x range
c.rangeX = c.maximumX - c.minimumX;
// X offset from index
c.indexOffsetX = AxisIndexOffsetAmount;
// minimum Y coordinate
c.minimumY = (RangeStart * actualyPrintArea.Height) + Margins.Top;
// maximum Y coordinate
c.maximumY = (RangeEnd * actualyPrintArea.Height) - Margins.Bottom;
// y range
c.rangeY = c.maximumY - c.minimumY;
// X coordinate of the vertical axis line (all other y positions should be based off of this value)
c.axisVerticalLineX = (Position == YAxisPosition.Left) ?
c.maximumX - c.indexOffsetX :
c.indexOffsetX;
if (c.axisVerticalLineX < MinimumVerticalLineXOffset)
{
c.axisVerticalLineX = MinimumVerticalLineXOffset;
}
// effective tick widths
c.tickWidth = DefaultTickWidth;
// outermost x coordinate (away from vertical axis line) for all ticks
c.outermostTickX = (Position == YAxisPosition.Left) ?
c.axisVerticalLineX - c.tickWidth :
c.axisVerticalLineX + c.tickWidth;
// actual tick X coordinates
c.tickX = (Position == YAxisPosition.Left) ?
c.axisVerticalLineX - c.tickWidth :
c.axisVerticalLineX;
// horizontal margin between tick line and label
c.tickLineToLabelMargin = -2F;
c.labelSize = TextRenderer.MeasureText((Maximum).ToString(Format), Font);
c.maximumLablelWidth = c.labelSize.Width;
// all labels are aligned vertically on the same Y coordinate.
c.labelX = (Position == YAxisPosition.Left) ?
c.outermostTickX - c.tickLineToLabelMargin - c.maximumLablelWidth :
c.outermostTickX + c.tickLineToLabelMargin;
var actualTitle = string.IsNullOrEmpty(Unit) ? Name : $"{Name} ({Unit})";
if (DrawTitleVertically)
{
Size horizontalSize = TextRenderer.MeasureText(actualTitle, Font);
// flip horizontal size to vertical
c.titleSize = new Size(
horizontalSize.Height,
horizontalSize.Width);
}
else
{
c.titleSize = TextRenderer.MeasureText(actualTitle, Font);
}
c.titleX = (Position == YAxisPosition.Left) ?
c.labelX - c.titleToLabelMargin - c.titleSize.Width :
c.labelX + c.titleToLabelMargin;
c.titleY = c.minimumY + ((c.maximumY - c.minimumY) / 2);
c.TitleLabel = new TitleLabel()
{
Text = actualTitle,
X = c.titleX,
Y = c.titleY
};
float valueRange = Math.Abs(Maximum - Minimum);
float largeStep = TickStep == 0 ? Maximum / 4 : TickStep;
float startYPosition = InvertRange ? -Maximum : Minimum;
float maxYPosition = InvertRange ? -Minimum : Maximum;
float scalingRangeMinimum = InvertRange ? -c.maximumY : c.minimumY;
float scalingRangeMaximum = InvertRange ? -c.minimumY : c.maximumY;
float scalingValuesMinimum = InvertRange ? -Minimum : Minimum;
float scalingValuesMaximum = InvertRange ? -Maximum : Maximum;
for (float i = startYPosition; i < maxYPosition; i += largeStep)
{
var largeStepValue = i;
var largeScaledY = LineGraphHelper.MapValueToExactCoordinate(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, largeStepValue);
c.Ticks.Add(new Tick()
{
X = c.tickX,
Y = largeScaledY
});
c.TickLabels.Add(new TickLabel()
{
X = c.labelX,
Y = largeScaledY - (Font.SizeInPoints),
Text = FormatLabel(Math.Abs(Math.Round(largeStepValue, Precision)))
});
}
var lastScaledY = LineGraphHelper.MapValueToExactCoordinate(scalingRangeMinimum, scalingRangeMaximum,
scalingValuesMinimum, scalingValuesMaximum, scalingValuesMaximum);
c.Ticks.Add(new Tick()
{
X = c.tickX,
Y = Math.Abs(InvertRange ? scalingRangeMinimum : scalingRangeMaximum)
});
c.TickLabels.Add(new TickLabel()
{
X = c.labelX,
Y = Math.Abs(InvertRange ? scalingRangeMinimum : scalingRangeMaximum) - (Font.SizeInPoints),
Text = FormatLabel(Math.Abs(InvertRange ? scalingValuesMinimum : scalingValuesMaximum))
});
return(c);
}
private int PaintAxis(Graphics g, Size size, ILineGraphSeries series, int offset)
{
int axisWidth = 0;
int axisMargin = 2;
try
{
g.SmoothingMode = smoothingMode;
var topY = (size.Height * series.RangeStart) + series.Margins.Top;
var bottomY = (size.Height * series.RangeEnd) - series.Margins.Bottom;
var verticalRange = bottomY - topY;
var valueRange = series.Maximum - series.Minimum;
var verticalAxisLineX = offset + (series.Position == YAxisPosition.Left ? size.Width - 2 : 0);
using (Pen axisPen = new Pen(series.Color, series.AxisBaseLineThickness))
{
var axisBaseLineStartPoint = new PointF(verticalAxisLineX, topY);
var axisBaseLineEndPoint = new PointF(verticalAxisLineX, bottomY);
g.DrawLine(
axisPen,
axisBaseLineStartPoint,
axisBaseLineEndPoint);
// Get the label formatting info
SizeF labelSize = g.MeasureString(series.Maximum.ToString(series.Format), series.Font);
StringFormat labelFormat = new StringFormat()
{
Alignment = StringAlignment.Far
};
axisWidth = DefaultTickWidth + (int)labelSize.Width;
int labelHorizontalOffset = (int)(series.Position == YAxisPosition.Left ?
-(DefaultTickWidth + labelSize.Width) :
DefaultTickWidth + labelSize.Width);
var ticks = LineGraphHelper.MapTicks(series, verticalAxisLineX, topY, bottomY);
if (series.InvertRange)
{
foreach (Tick tick in ticks.AllTicks)
{
var startX = series.Position == YAxisPosition.Left ? verticalAxisLineX - DefaultTickWidth : verticalAxisLineX;
var endX = series.Position == YAxisPosition.Left ? verticalAxisLineX : verticalAxisLineX + DefaultTickWidth;
g.DrawLine(axisPen, new PointF(startX, tick.Y), new PointF(endX, tick.Y));
if (tick.Label != null)
{
using (Brush labelBrush = new SolidBrush(series.Color))
{
RectangleF labelRectangle = new RectangleF(
tick.Label.X + labelHorizontalOffset,
tick.Label.Y - (labelSize.Height / 2),
labelSize.Width,
labelSize.Height);
g.DrawString(
tick.Label.Text,
series.Font,
labelBrush,
labelRectangle,
labelFormat);
}
}
}
}
else
{
float invertedTickStartY = topY + bottomY;
foreach (Tick tick in ticks.AllTicks)
{
var startX = series.Position == YAxisPosition.Left ? verticalAxisLineX - DefaultTickWidth : verticalAxisLineX;
var endX = series.Position == YAxisPosition.Left ? verticalAxisLineX : verticalAxisLineX + DefaultTickWidth;
PointF tickStartPoint = new PointF(startX, invertedTickStartY - tick.Y);
PointF tickEndPoint = new PointF(endX, invertedTickStartY - tick.Y);
g.DrawLine(
axisPen,
tickStartPoint,
tickEndPoint);
if (tick.Label != null)
{
using (Brush labelBrush = new SolidBrush(series.Color))
{
RectangleF labelRectangle = new RectangleF(
tick.Label.X + labelHorizontalOffset,
invertedTickStartY - tick.Label.Y - (labelSize.Height / 2),
labelSize.Width,
labelSize.Height);
g.DrawString(
tick.Label.Text,
series.Font,
labelBrush,
labelRectangle,
labelFormat);
}
}
}
}
}
}
catch (Exception ex)
{
ExceptionHandler(ex);
}
return(axisWidth + axisMargin);
}