I need to draw sin(x)/x graphic into PictureBox in animation mode by timer component. I have axes already on my picBox and graphic draws from 0;0. Also I have some code from this forum, but there my graphic draws FROM RIGHT TO THE LEFT, and I need to draw it FROM LEFT TO THE RIGHT. And I need to draw it in animation mode by timer. Could anybody help me?
Here's my drawing function:
private void drawStream()
{
const int scaleX = 35;
const int scaleY = 35;
Point picBoxTopLeft = new Point(0, 0);
Point picBoxTopLeftm1 = new Point(-1, 0);
int halfX = picBox.Width / 2;
int halfY = picBox.Height / 2;
Size size = new Size(halfX + 20, picBox.Height);
Graphics gr = picBox.CreateGraphics();
gr.TranslateTransform(halfX, halfY);
gr.ScaleTransform(scaleX, scaleY);
gr.ResetClip();
float lastY = (float)Math.Sin(0);
float y = lastY;
Pen p = new Pen(Color.Red, 0.015F);
float stepX = 1F / scaleX;
for (float x = 0; x < 15; x += stepX)
{
gr.CopyFromScreen(picBox.PointToScreen(picBoxTopLeft), picBoxTopLeftm1, size, CopyPixelOperation.SourceCopy);
y = (float)Math.Sin(x);
gr.DrawLine(p, -stepX, lastY, 0, y);
lastY = y;
}
}
Thanx a lot.
P.S. Sorry for my English, I'm Ukrainian.