// TODO: store the TickCollection in the Axis module, not in the Ticks module.
// https://github.com/ScottPlot/ScottPlot/pull/1647
public void Render(PlotDimensions dims, Bitmap bmp, bool lowQuality = false)
{
if (!IsVisible)
{
return;
}
double[] majorTicks = TickCollection.GetVisibleMajorTicks(dims)
.Select(t => t.Position)
.ToArray();
double[] minorTicks = TickCollection.GetVisibleMinorTicks(dims)
.Select(t => t.Position)
.ToArray();
RenderTicksAndGridLines(dims, bmp, lowQuality || SnapPx, majorTicks, minorTicks);
RenderTickLabels(dims, bmp, lowQuality);
}
public static void RenderTickLabels(PlotDimensions dims, Graphics gfx, TickCollection tc, Drawing.Font tickFont, Edge edge, float rotation, bool rulerMode, float PixelOffset, float MajorTickLength, float MinorTickLength)
{
if (tc.tickLabels is null || tc.tickLabels.Length == 0)
{
return;
}
using var font = GDI.Font(tickFont);
using var brush = GDI.Brush(tickFont.Color);
using var sf = GDI.StringFormat();
Tick[] visibleMajorTicks = tc.GetVisibleMajorTicks(dims);
switch (edge)
{
case Edge.Bottom:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.GetPixelX(visibleMajorTicks[i].Position);
float y = dims.DataOffsetY + dims.DataHeight + MajorTickLength;
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = rotation == 0 ? StringAlignment.Center : StringAlignment.Far;
if (rulerMode)
{
sf.Alignment = StringAlignment.Near;
}
sf.LineAlignment = rotation == 0 ? StringAlignment.Near : StringAlignment.Center;
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Top:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.GetPixelX(visibleMajorTicks[i].Position);
float y = dims.DataOffsetY - MajorTickLength;
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = rotation == 0 ? StringAlignment.Center : StringAlignment.Near;
if (rulerMode)
{
sf.Alignment = StringAlignment.Near;
}
sf.LineAlignment = rotation == 0 ? StringAlignment.Far : StringAlignment.Center;
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Left:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.DataOffsetX - PixelOffset - MajorTickLength;
float y = dims.GetPixelY(visibleMajorTicks[i].Position);
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
if (rotation == 90)
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Far;
}
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Right:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.DataOffsetX + PixelOffset + MajorTickLength + dims.DataWidth;
float y = dims.GetPixelY(visibleMajorTicks[i].Position);
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Near;
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
if (rotation == 90)
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Near;
}
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
default:
throw new NotImplementedException($"unsupported edge type {edge}");
}
if (!string.IsNullOrWhiteSpace(tc.CornerLabel))
{
switch (edge)
{
case Edge.Bottom:
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Near;
gfx.DrawString(s: "\n" + tc.CornerLabel,
x: dims.DataOffsetX + dims.DataWidth,
y: dims.DataOffsetY + dims.DataHeight + MajorTickLength,
font: font, brush: brush, format: sf);
break;
case Edge.Left:
sf.Alignment = StringAlignment.Near;
sf.LineAlignment = StringAlignment.Far;
gfx.DrawString(s: "\n" + tc.CornerLabel,
x: dims.DataOffsetX,
y: dims.DataOffsetY,
font: font, brush: brush, format: sf);
break;
case Edge.Top:
throw new NotImplementedException("multiplier and offset notation is not supported for right and top axes");
case Edge.Right:
throw new NotImplementedException("multiplier and offset notation is not supported for right and top axes");
default:
throw new NotImplementedException($"unsupported edge type {edge}");
}
}
}