using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
/*
* @(#)fractal.java - Fractal Program Mandelbrot Set
* www.eckhard-roessel.de
* Copyright (c) Eckhard Roessel. All Rights Reserved.
* 06/30/2000 - 03/29/2000
*/
//import java.awt.*;
//import java.applet.*;
//import java.awt.event.*;
/**
* @version 1.1
* @author Eckhard Roessel
* @modified 03/29/2001
* @modified 08/16/2006 tweaked by Duncan Mullier 8/2006
*/
//public class Fractal extends Applet implements MouseListener, MouseMotionListener
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1(){
Console.WriteLine("******* Form1()");
InitializeComponent();
}
class HSB{
public float rChan, gChan, bChan;
// constructr
public HSB(){
Console.WriteLine("******* HSB.HSB()");
rChan = gChan = bChan = 0;
}
public void fromHSB(float h,float s,float b){
float red = b;
float green = b;
float blue = b;
if (s != 0)
{
float max = b;
float dif = b * s / 255f;
float min = b - dif;
float h2 = h * 360f / 255f;
if (h2 < 60f)
{
red = max;
green = h2 * dif / 60f + min;
blue = min;
}
else if (h2 < 120f)
{
red = -(h2 - 120f) * dif / 60f + min;
green = max;
blue = min;
}
else if (h2 < 180f)
{
red = min;
green = max;
blue = (h2 - 120f) * dif / 60f + min;
}
else if (h2 < 240f)
{
red = min;
green = -(h2 - 240f) * dif / 60f + min;
blue = max;
}
else if (h2 < 300f)
{
red = (h2 - 240f) * dif / 60f + min;
green = min;
blue = max;
}
else if (h2 <= 360f)
{
red = max;
green = min;
blue = -(h2 - 360f) * dif / 60 + min;
}
else
{
red = 0;
green = 0;
blue = 0;
}
}
rChan = (int)Math.Round(Math.Min(Math.Max(red, 0f), 255));
gChan = (int)Math.Round(Math.Min(Math.Max(green, 0), 255));
bChan = (int)Math.Round(Math.Min(Math.Max(blue, 0), 255));
}
}
private readonly int MAX = 256; // max iterations
private readonly double SX = -2.025; // start value real
private readonly double SY = -1.125; // start value imaginary
private readonly double EX = 0.6; // end value real
private readonly double EY = 1.125; // end value imaginary
private static int x1, y1, xs, ys, xe, ye;
private static double xstart, ystart, xende, yende, xzoom, yzoom;
private static Boolean action, rectangle, finished;
private static float xy;
private String statusMessage = "";
private Image picture;
private Graphics g1;
private Cursor c1, c2;
private HSB HSBcol = new HSB();
public void init() // all instances will be prepared
{
Console.WriteLine("******* Form1()");
//HSBcol = new HSB();
finished = false;
/* TBD
*
//addMouseListener(this);
//addMouseMotionListener(this);
*/
c1 = Cursors.WaitCursor;
c2 = Cursors.Cross;
//c1 = new Cursor(Cursor.WAIT_CURSOR);
//c2 = new Cursor(Cursor.CROSSHAIR_CURSOR);
x1 = pictureBox1.Size.Width;
y1 = pictureBox1.Size.Height;
xy = (float)x1 / (float)y1;
//picture = createImage(x1, y1);
picture = new System.Drawing.Bitmap(x1, y1);
//g1 = picture.getGraphics();
g1 = Graphics.FromImage(picture);
finished = true;
}
public void destroy() // delete all instances
{
if (finished)
{
// removeMouseListener(this);
// removeMouseMotionListener(this);
picture = null;
g1 = null;
c1 = null;
c2 = null;
// System.gc(); // garbage collection
GC.Collect();
}
}
public void start()
{
action = false;
rectangle = false;
initvalues();
xzoom = (xende - xstart) / (double)x1;
yzoom = (yende - ystart) / (double)y1;
mandelbrot();
}
public void stop()
{
}
/* public void paint(Graphics g)
{
update(g);
}*/
public void update(Graphics g)
{
Pen myPen = new Pen(Color.White);
g.DrawImage(picture,0,0);
if (rectangle){
if (xs < xe)
{
if (ys < ye){
g.DrawRectangle(myPen, xs, ys, (xe - xs), (ye - ys));
}
}
else
{
g.DrawRectangle(myPen,xs, ye, (xe - xs), (ys - ye));
}
myPen.Dispose();
}
/*
g.drawImage(picture, 0, 0, this);
if (rectangle)
{
g.setColor(Color.white);
if (xs < xe)
{
if (ys < ye) g.drawRect(xs, ys, (xe - xs), (ye - ys));
else g.drawRect(xs, ye, (xe - xs), (ys - ye));
}
else
{
if (ys < ye) g.drawRect(xe, ys, (xs - xe), (ye - ys));
else g.drawRect(xe, ye, (xs - xe), (ys - ye));
}
}*/
}
private void mandelbrot() // calculate all points
{**
int x, y;
float h, b, alt = 0.0f;
**
action = false;
//setCursor(c1);
this.Cursor = c1;
//showStatus("Mandelbrot-Set will be produced - please wait...");
//statusMessage = "Mandelbrot-Set will be produced - please wait...";
for (x = 0; x < x1; x += 2)
for (y = 0; y < y1; y++)
{
h = pointcolour(xstart + xzoom * (double)x, ystart + yzoom * (double)y); // color value
if (h != alt)
{
b = 1.0f - h * h; // brightnes
// g1.setColor(Color.getHSBColor(h, 0.8f, b));
Color col = Color.getHSBColor(h, 0.8f, b);
//djm test
// Color col = Color.getHSBColor(h, 0.8f, b);
/* int red = col.getRed();
int green = col.getGreen();
int blue = col.getBlue();*/
//djm
alt = h;
}
// g1.drawLine(x, y, x + 1, y);
Pen pen = new Pen(color);
g1.DrawLine(pen, x, y, x + 1, y);
}
// showStatus("Mandelbrot-Set ready - please select zoom area with pressed mouse.");
//setCursor(c2);
this.Cursor = c2;
action = true;
}
private float pointcolour(double xwert, double ywert) // color value from 0.0 to 1.0 by iterations
{
double r = 0.0, i = 0.0, m = 0.0;
int j = 0;
while ((j < MAX) && (m < 4.0))
{
j++;
m = r * r - i * i;
i = 2.0 * r * i + ywert;
r = m + xwert;
}
return (float)j / (float)MAX;
}
private void initvalues() // reset start values
{
xstart = SX;
ystart = SY;
xende = EX;
yende = EY;
if ((float)((xende - xstart) / (yende - ystart)) != xy)
xstart = xende - (yende - ystart) * (double)xy;
}
private void Form1_Load(object sender, EventArgs e)
{
//Form1.StatusText ()
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
g1 = g;
action = false;
rectangle = false;
initvalues();
xzoom = (xende - xstart) / (double)x1;
yzoom = (yende - ystart) / (double)y1;
//picture = g.DrawImage;
//g.DrawImage(picture,0,0);
update(g);
mandelbrot();
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (action)
{
xs = e.X;
ys = e.Y;
}
update(pictureBox1.CreateGraphics());
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
//e.consume();
if (action)
{
xe = e.X;
ye = e.Y;
rectangle = true;
//repaint();
update(pictureBox1.CreateGraphics());
Refresh();
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
rectangle = false;
}
private void pictureBox1_Click(object sender, EventArgs e)
{
}
}
}
i get a n error on Color col = Color.getHSBColor(h, 0.8f, b);, and Pen pen = new Pen(color);
Can anyone help me ???
