public static void DrawLines(ref Bitmap Bmp, int[] yValues, Color LineColor, string ValueStructure = "{0}", int Padding = 20, int Thickness = 2, string[] Labels = null, string xLabel = null, string yLabel = null, int FontSize = 1)
{
if ((xLabel != null || yLabel != null) && Padding < 20)
{
Padding = 20;
} //If we have axis labels, ensure we have enough space for them
float xStep = (float)(Bmp.Width - (Padding * 2)) / (yValues.Length - 1),
yStep = (float)(Bmp.Height - (Padding * 2)) / (Linq.Max(yValues, x => x)[0] - Linq.Min(yValues, x => x)[0]),
yOffset = yStep * Linq.Min(yValues, x => x)[0]; //Calculate how many pixels per unit on the x,y axes and how far to shift the grid down by
string T1 = null, T2 = null;
int Align = 1; //Indicates direction of text write
//Draw the lines for the x and y axes
BitMapHandling.DrawLine(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, Padding / 2, Padding / 2),
BitMapHandling.PointRelativeToOrigin(Bmp, Bmp.Width - (Padding / 2), Padding / 2), Color.Gray, 3);
BitMapHandling.DrawLine(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, Padding / 2, Padding / 2),
BitMapHandling.PointRelativeToOrigin(Bmp, Padding / 2, Bmp.Height - Padding), Color.Gray, 3);
if (xLabel != null)//Write the x axes label at intervals below the line
{
for (int x = 1; x < yValues.Length - 1; x += 5)
{
BitMapHandling.DrawText(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, xStep * x + Padding, Padding / 2 - 5), xLabel, Color.Black, 2, 0);
}
}
if (yLabel != null)//Write the y axes label above the y axes line
{
BitMapHandling.DrawText(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, Padding / 2, Bmp.Height - (Padding / 2)), yLabel, Color.Black, 2, 1);
}
if (Labels != null && Labels.Length != yValues.Length)
{
throw new Exception("Labels and yValues length missmatch");
} //Throw an error if we dont have enough labels for the values
for (int i = 0; i < yValues.Length - 1; i++) //For every point
{
Point P1 = BitMapHandling.PointRelativeToOrigin(Bmp, i * xStep + Padding, (yValues[i] * yStep) + Padding - yOffset),
P2 = BitMapHandling.PointRelativeToOrigin(Bmp, (i + 1) * xStep + Padding, (yValues[i + 1] * yStep) + Padding - yOffset);//Caclulate the Points for itself and the next point
if (i != 0)
{
Align = 0;
} //Change the text align to center
if (Labels != null) //Set the names of the points
{
T1 = Labels[i];
if (i == yValues.Length - 2)
{
T2 = Labels[i + 1];
}
}
DrawDataPoint(ref Bmp, P1, yValues[i], P2, yValues[i + 1], T1, T2, ValueStructure, LineColor, Thickness, Padding, FontSize, Align);//Draw the points and their details
}
}
private static void DrawDataPoint(ref Bitmap Bmp, Point P1, int V1, Point P2, int V2, string T1, string T2, string ValueStructure, Color LineColor, int Thickness, int Padding, int FontSize, int Align)
{
if (T1 != null) //If we have an point name
{
BitMapHandling.DrawLine(ref Bmp, new Point(P1.X, 0), BitMapHandling.PointRelativeToOrigin(Bmp, P1.X, Padding / 2), Color.Gray); //Draw a vertical grey line behind the point
BitMapHandling.DrawText(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, P1.X, Padding / 2 + (6 * FontSize)), T1, Color.Black, FontSize, Align); //Write the name of the data point below the x axis
BitMapHandling.DrawText(ref Bmp, new Point(P1.X, P1.Y - (6 * FontSize)), String.Format(ValueStructure, V1), Color.Black, FontSize, 0); //Write the value of the data point above the point
}
if (T2 != null) //If we have a point name
{
BitMapHandling.DrawLine(ref Bmp, new Point(P2.X, 0), BitMapHandling.PointRelativeToOrigin(Bmp, P2.X, Padding / 2), Color.Gray); //Draw a vertical grey line behind the point
BitMapHandling.DrawText(ref Bmp, BitMapHandling.PointRelativeToOrigin(Bmp, P2.X, Padding / 2 + (6 * FontSize)), T2, Color.Black, FontSize, -1); //Write the name of the data point below the x axis
BitMapHandling.DrawText(ref Bmp, new Point(P2.X, P2.Y - (6 * FontSize)), String.Format(ValueStructure, V2), Color.Black, FontSize, 0); //Write the value of the data point above the point
}
BitMapHandling.DrawLine(ref Bmp, P1, P2, LineColor, Thickness); //Draw The Data Points Line
}
