static void work_thread()
{
int [] temp = new int[4];
int [] buffer = null;
int size;
int i, j, k;
Graphics g;
do
{
try
{
g = Graphics.FromImage(bitmap);
g.Clear(Color.Black);
g.Dispose();
g = null;
pBox.Invalidate();
if (bDemoMode)
{
if (demo_list != null)
{
if (demo_list.Count > demo_iter)
{
xmin = ((ExamplePoint)demo_list[demo_iter]).xmin;
ymin = ((ExamplePoint)demo_list[demo_iter]).ymin;
xmax = ((ExamplePoint)demo_list[demo_iter]).xmax;
ymax = ((ExamplePoint)demo_list[demo_iter]).ymax;
nMax = ((ExamplePoint)demo_list[demo_iter]).max_iter;
if (((ExamplePoint)demo_list[demo_iter]).name != null)
{
form.Text = "Mandelbrot Viewer - " + ((ExamplePoint)demo_list[demo_iter]).name;
}
else
{
form.Text = String.Format("Mandelbrot Viewer - {0}", demo_iter);
}
colors = new Color[nMax + 1];
ColorRainbow.Make_color_array(nNumColors, colors);
colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors
}
demo_iter++;
if (demo_iter >= demo_list.Count)
{
demo_iter = 0;
}
}
}
if (colors.Length != nMax + 1)
{
colors = new Color[nMax + 1];
ColorRainbow.Make_color_array(nNumColors, colors);
colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors
}
sock_writer.Write(xmin);
sock_writer.Write(ymin);
sock_writer.Write(xmax);
sock_writer.Write(ymax);
sock_writer.Write(nMax);
for (;;)
{
temp[0] = sock_reader.ReadInt32();
temp[1] = sock_reader.ReadInt32();
temp[2] = sock_reader.ReadInt32();
temp[3] = sock_reader.ReadInt32();
if (temp[0] == 0 && temp[1] == 0 && temp[2] == 0 && temp[3] == 0)
{
if (bDemoMode)
{
Thread.Sleep(5000);
break;
}
bDrawing = false;
return;
}
size = (temp[1] + 1 - temp[0]) * (temp[3] + 1 - temp[2]);
buffer = new int[size];
for (i = 0; i < size; i++)
{
buffer[i] = sock_reader.ReadInt32();
}
int max_color = colors.Length;
Random rand = new Random();
try
{
lock (bitmap)
{
k = 0;
for (j = temp[2]; j <= temp[3]; j++)
{
for (i = temp[0]; i <= temp[1]; i++)
{
//bitmap.SetPixel(i, j, colors[buffer[k]]);
if (buffer[k] >= 0 && buffer[k] < max_color)
{
bitmap.SetPixel(i, j, colors[buffer[k]]);
}
else
{
bitmap.SetPixel(i, j, Color.FromArgb(rand.Next(0, 255), rand.Next(0, 255), rand.Next(0, 255)));
}
k++;
}
}
}
}
catch (Exception e)
{
MessageBox.Show("exception thrown while accessing bitmap: " + e.Message, "Error");
}
pBox.Invalidate();
}
}
catch (Exception e)
{
// do something with the exception
MessageBox.Show("Exception thrown in worker thread: " + e.Message, "Error");
break;
}
} while (bDemoMode);
bDrawing = false;
}
private void connect_button_Click(object sender, System.EventArgs e)
{
if (bConnected)
{
MessageBox.Show("You may only connect once", "Note");
return;
}
try
{
sock = new TcpClient(host.Text, Convert.ToInt32(port.Text));
if (sock == null)
{
MessageBox.Show("Unable to connect to " + host.Text + " on port " + port.Text, "Error");
return;
}
}
catch (SocketException exception)
{
MessageBox.Show("Unable to connect to " + host.Text + " on port " + port.Text + ", " + exception.Message, "Error");
return;
}
bConnected = true;
sock_writer = new BinaryWriter(sock.GetStream());
sock_reader = new BinaryReader(sock.GetStream());
nWidth = sock_reader.ReadInt32();
nHeight = sock_reader.ReadInt32();
nNumColors = sock_reader.ReadInt32();
nMax = sock_reader.ReadInt32();
//MessageBox.Show(String.Format("Width: {0}, Height: {1}, num_colors: {2}", nWidth, nHeight, nNumColors), "Note");
// validate input values
if (nWidth > 2048)
{
nWidth = 2048;
}
if (nWidth < 1)
{
nWidth = 768;
}
if (nHeight > 2048)
{
nHeight = 2048;
}
if (nHeight < 1)
{
nHeight = 768;
}
if (nNumColors > 1024)
{
nNumColors = 1024;
}
if (nNumColors < 1)
{
nNumColors = 128;
}
if (nMax < 1)
{
nMax = 100;
}
if (nMax > 5000)
{
nMax = 5000;
}
colors = new Color[nMax + 1];
ColorRainbow.Make_color_array(nNumColors, colors);
colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors
bitmap = new Bitmap(nWidth, nHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g;
g = Graphics.FromImage(bitmap);
g.Clear(Color.FromKnownColor(KnownColor.Black));
g.Dispose();
/*
* Rectangle rButton = connect_button.Bounds;
* Rectangle rBox = outputBox.Bounds;
* outputBox.SetBounds(rButton.Left, rButton.Top, rBox.Width, rBox.Height + (rBox.Top - rButton.Top));
* connect_button.Hide();
* host.Hide();
* port.Hide();
* outputBox.Invalidate();
*/
connect_button.Enabled = false;
host.ReadOnly = true;
port.ReadOnly = true;
if (demo_list != null && demo_list.Count > 0)
{
go_stop_button.Enabled = true;
}
bDrawing = true;
pBox = outputBox;
ThreadStart threadProc = new ThreadStart(work_thread);
thread = new Thread(threadProc);
thread.Start();
}