public System.Drawing.Bitmap Render()
{
Bitmap bmp = new Bitmap(_width, _height);
Graphics graph = Graphics.FromImage(bmp);
Color x = Color.FromArgb(237, 243, 251);
graph.FillRectangle(new SolidBrush(x),
-1, -1, bmp.Width + 1, bmp.Height + 1);
float maxvalue = (float)ComputeMaxValue();
computevalues();
yscale = (float)(400.0 / 75.0);
xscale = (float)(500.0 / maxvalue);
//graph.ScaleTransform(1,-1);
//graph.TranslateTransform(40,-(_height-20));
CJumboGraphics cs = new CJumboGraphics(graph);
cs.SetViewPortOrig(40, _height - 40);
DrawAxis(cs);
DrawAxisText(cs);
DrawCircles(cs);
PlotData(cs);
return(bmp);
}
public void DrawAxis(CJumboGraphics graph)
{
Pen pen = new Pen(Color.Red);
//
// Vertical Axis
graph.DrawLine(pen, 0, 0, 0, (int)(75.0 * yscale));
//
//
//
double mxx = ComputeMaxValue();
graph.DrawLine(pen, 0, 0, (int)(xscale * mxx), 0);
}
public void DrawCircles(CJumboGraphics g)
{
int len = df.Length;
Pen pens = new Pen(Color.Navy);
SolidBrush ns = new SolidBrush(Color.Chocolate);
for (int i = 0; i < len; ++i)
{
//g.DrawEllipse( pens,df[i].X *xscale,df[i].Y*yscale,5,5);
if ((df[i].X != 0) && (df[i].Y != 0))
{
g.FillEllipse(ns, (int)(df[i].X * xscale), (int)(df[i].Y * yscale), 5, 5);
}
}
}
public void PlotData(CJumboGraphics g)
{
Pen pen = new Pen(Color.Brown);
// g.DrawLine(pen,(float)_xaxis[0]*xscale,(float)_yaxis[0]*yscale,(float)_xaxis[0]*xscale ,(float) _yaxis[0]*yscale);
float oldx = (float)_xaxis[0] * xscale;
float oldy = (float)_yaxis[0] * yscale;
for (int i = 1; i < 180; ++i)
{
g.DrawLine(pen, (int)oldx, (int)oldy, (int)(_xaxis[i] * xscale), (int)(_yaxis[i] * yscale));
oldx = (float)_xaxis[i] * xscale;
oldy = (float)_yaxis[i] * yscale;
}
}
public void DrawAxisText(CJumboGraphics g)
{
Pen pen = new Pen(Color.Green);
Font fl = new Font("Verdana", 9, System.Drawing.FontStyle.Regular);
SolidBrush brs = new SolidBrush(Color.Black);
//Matrix mt = new Matrix();
for (int i = 5; i <= 75; i += 5)
{
String str = Convert.ToString(i);
// Matrix m = g.Transform;
// Point[] fr = new Point[1];
// fr[0] = new Point(-15,(int)(i*yscale));
// g.TransformPoints(CoordinateSpace.Device ,CoordinateSpace.World , fr );
// g.Transform = mt;
// g.DrawString(str,fl,brs,fr[0].X ,fr[0].Y );
g.DrawString(str, fl, brs, -15, (int)(i * yscale));
// g.Transform = m;
g.DrawLine(pen, -5, (int)(i * yscale), 5, (int)(i * yscale));
}
int mx = (int)ComputeMaxValue();
int addendum = mx / 10;
for (int i = 0; i < mx; i += addendum)
{
String str = Convert.ToString(i);
// Matrix m = g.Transform;
// Point[] fr = new Point[1];
// fr[0] = new Point((int)(i*xscale),-2);
// g.TransformPoints(CoordinateSpace.Device ,CoordinateSpace.World , fr );
// g.Transform = mt;
//g.DrawString(str,fl,brs,fr[0].X ,fr[0].Y );
g.DrawString(str, fl, brs, (int)(i * xscale), -2);
//g.Transform = m;
if (i != 0)
{
g.DrawLine(pen, (int)(i * xscale), 10, (int)(i * xscale), 0);
}
}
}
