private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
Function17 Gi = new Function17();
Gi.graf(pictureBox1.Width, pictureBox1.Height, (trackBar1.Value));
pictureBox1.Image = Gi.Bitmap;
}
public override void graf(int width, int height, float scale)
{
double x;
double h = (B - A) / N; //0.01;
listOfPoints = new PointF[(int)N];
Function17 acc = new Function17();
//MessageBox.Show(System.Convert.ToString((A)+" "+System.Convert.ToString(B)));
for (int i = 0; i < N; i++)
{
if (i == 0)
{
x = A + h;
}
else
if (i == N - 1)
{
x = B - h;
}
else
{
x = h * i + A;
};
listOfPoints[i] = new PointF((float)x, vich(x));
}
bitmap = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bitmap);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
Pen p = new Pen(Color.Black, 2);
for (int i = 0; i < listOfPoints.Length; i++)
{
listOfPoints[i].X = listOfPoints[i].X * scale + width / 2;
listOfPoints[i].Y = height / 2 - listOfPoints[i].Y * scale;
}
g.DrawLines(p, listOfPoints);
g.DrawLine(p, width / 2, 0, width / 2, height);
for (int i = 10; i > -8; i--)
{
Font drawFont = new Font("Arial", 14);
if (i < 0)
{
g.DrawString(System.Convert.ToString(i), drawFont, Brushes.Red, height / 2 + (i * scale - 12), 235);
}
else if (i > 0)
{
g.DrawString(System.Convert.ToString(i), drawFont, Brushes.Red, height / 2 + (i * scale - 8), 235);
}
}
for (int i = -8; i < 10; i++)
{
Font drawFont = new Font("Arial", 14);
if (i < 0)
{
g.DrawString(System.Convert.ToString(i), drawFont, Brushes.Red, 233, height / 2 - (i * scale + 13));
}
else if (i > 0)
{
g.DrawString(System.Convert.ToString(i), drawFont, Brushes.Red, 235, height / 2 - (i * scale + 14));
}
}
for (int i = -8; i < 10; i++)
{
float y = height / 2 - i * scale;
g.DrawLine(p, 215, y, 225, y);
}
for (int i = -8; i < 10; i++)
{
float x1 = width / 2 - i * scale;
g.DrawLine(p, x1, 215, x1, 225);
}
g.DrawLine(p, 0, height / 2, width, height / 2);
}
