/// <summary> /// Creates a bitmap of the graph. /// </summary> /// <param name="Settings">Graph settings.</param> /// <param name="States">State objects that contain graph-specific information about its inner states. /// These can be used in calls back to the graph object to make actions on the generated graph.</param> /// <returns>Bitmap</returns> public abstract SKImage CreateBitmap(GraphSettings Settings, out object[] States);
/// <summary>
/// Creates a bitmap of the graph.
/// </summary>
/// <param name="Settings">Graph settings.</param>
/// <param name="States">State object(s) that contain graph-specific information about its inner states.
/// These can be used in calls back to the graph object to make actions on the generated graph.</param>
/// <returns>Bitmap</returns>
public override SKImage CreateBitmap(GraphSettings Settings, out object[] States)
{
using (SKSurface Surface = SKSurface.Create(Settings.Width, Settings.Height, SKImageInfo.PlatformColorType, SKAlphaType.Premul))
{
SKCanvas Canvas = Surface.Canvas;
States = new object[0];
Canvas.Clear(Settings.BackgroundColor);
int x1, y1, x2, y2, x3, y3, w, h;
x1 = Settings.MarginLeft;
x2 = Settings.Width - Settings.MarginRight;
y1 = Settings.MarginTop;
y2 = Settings.Height - Settings.MarginBottom;
IVector YLabels = GetLabels(ref this.minY, ref this.maxY, this.y, Settings.ApproxNrLabelsY, out LabelType YLabelType);
SKPaint Font = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
HintingLevel = SKPaintHinting.Full,
SubpixelText = true,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.AxisColor,
Typeface = SKTypeface.FromFamilyName(Settings.FontName, SKTypefaceStyle.Normal),
TextSize = (float)Settings.LabelFontSize
};
float Size;
double MaxSize = 0;
if (this.showYAxis)
{
foreach (IElement Label in YLabels.ChildElements)
{
Size = Font.MeasureText(LabelString(Label, YLabelType));
if (Size > MaxSize)
{
MaxSize = Size;
}
}
}
x3 = (int)Math.Ceiling(x1 + MaxSize) + Settings.MarginLabel;
IVector XLabels = GetLabels(ref this.minX, ref this.maxX, this.x, Settings.ApproxNrLabelsX, out LabelType XLabelType);
MaxSize = 0;
if (this.showXAxis)
{
foreach (IElement Label in XLabels.ChildElements)
{
Size = Font.MeasureText(LabelString(Label, XLabelType));
if (Size > MaxSize)
{
MaxSize = Size;
}
}
}
y3 = (int)Math.Floor(y2 - MaxSize) - Settings.MarginLabel;
w = x2 - x3;
h = y3 - y1;
SKPaint AxisBrush = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.AxisColor
};
SKPaint GridBrush = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.GridColor
};
SKPaint AxisPen = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Stroke,
Color = Settings.AxisColor,
StrokeWidth = Settings.AxisWidth
};
SKPaint GridPen = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Stroke,
Color = Settings.GridColor,
StrokeWidth = Settings.GridWidth
};
double OrigoX;
double OrigoY;
if (this.minX.AssociatedSet is IAbelianGroup AgX)
{
OrigoX = Scale(new ObjectVector(AgX.AdditiveIdentity), this.minX, this.maxX, x3, w)[0];
}
else
{
OrigoX = 0;
}
if (this.minY.AssociatedSet is IAbelianGroup AgY)
{
OrigoY = Scale(new ObjectVector(AgY.AdditiveIdentity), this.minY, this.maxY, y3, -h)[0];
}
else
{
OrigoY = 0;
}
DrawingArea DrawingArea = new DrawingArea(this.minX, this.maxX, this.minY, this.maxY, x3, y3, w, -h, (float)OrigoX, (float)OrigoY);
double[] LabelYY = DrawingArea.ScaleY(YLabels);
int i = 0;
float f;
string s;
foreach (IElement Label in YLabels.ChildElements)
{
Size = Font.MeasureText(s = LabelString(Label, YLabelType));
f = (float)LabelYY[i++];
if (this.showGrid)
{
if (Label is DoubleNumber && ((DoubleNumber)Label).Value == 0)
{
Canvas.DrawLine(x3, f, x2, f, AxisPen);
}
else
{
Canvas.DrawLine(x3, f, x2, f, GridPen);
}
}
if (this.showYAxis)
{
f += (float)Settings.LabelFontSize * 0.5f;
Canvas.DrawText(s, x3 - Size - Settings.MarginLabel, f, Font);
}
}
double[] LabelXX = DrawingArea.ScaleX(XLabels);
i = 0;
foreach (IElement Label in XLabels.ChildElements)
{
Size = Font.MeasureText(s = LabelString(Label, XLabelType));
f = (float)LabelXX[i++];
if (this.showGrid)
{
if (Label is DoubleNumber && ((DoubleNumber)Label).Value == 0)
{
Canvas.DrawLine(f, y1, f, y3, AxisPen);
}
else
{
Canvas.DrawLine(f, y1, f, y3, GridPen);
}
}
if (this.showXAxis)
{
f -= Size * 0.5f;
if (f < x3)
{
f = x3;
}
else if (f + Size > x3 + w)
{
f = x3 + w - Size;
}
Canvas.DrawText(s, f, y3 + Settings.MarginLabel + (float)Settings.LabelFontSize, Font);
}
}
IEnumerator <IVector> ex = this.x.GetEnumerator();
IEnumerator <IVector> ey = this.y.GetEnumerator();
IEnumerator <object[]> eParameters = this.parameters.GetEnumerator();
IEnumerator <DrawCallback> eCallbacks = this.callbacks.GetEnumerator();
SKPoint[] Points;
SKPoint[] PrevPoints = null;
object[] PrevParameters = null;
DrawCallback PrevCallback = null;
while (ex.MoveNext() && ey.MoveNext() && eParameters.MoveNext() && eCallbacks.MoveNext())
{
Points = DrawingArea.Scale(ex.Current, ey.Current);
if (PrevCallback != null && eCallbacks.Current.Target.GetType() == PrevCallback.Target.GetType())
{
eCallbacks.Current(Canvas, Points, eParameters.Current, PrevPoints, PrevParameters, DrawingArea);
}
else
{
eCallbacks.Current(Canvas, Points, eParameters.Current, null, null, DrawingArea);
}
PrevPoints = Points;
PrevParameters = eParameters.Current;
PrevCallback = eCallbacks.Current;
}
SKImage Result = Surface.Snapshot();
Font.Dispose();
AxisBrush.Dispose();
GridBrush.Dispose();
GridPen.Dispose();
AxisPen.Dispose();
States = new object[] { DrawingArea };
return(Result);
}
}
/// <summary>
/// Creates a bitmap of the graph.
/// </summary>
/// <param name="Settings">Graph settings.</param>
/// <returns>Bitmap</returns>
public SKImage CreateBitmap(GraphSettings Settings)
{
return(this.CreateBitmap(Settings, out object[] States));
}
/// <summary>
/// Creates a bitmap of the graph.
/// </summary>
/// <param name="Settings">Graph settings.</param>
/// <param name="States">State object(s) that contain graph-specific information about its inner states.
/// These can be used in calls back to the graph object to make actions on the generated graph.</param>
/// <returns>Bitmap</returns>
public override SKImage CreateBitmap(GraphSettings Settings, out object[] States)
{
States = new object[0];
return(this.bitmap);
}