private void btnDraw_Click(object sender, EventArgs e)
{
Painter = null;
int color = sliderColor.Value;
int randomness = sliderRandomness.Value;
int width = (int)nudWidth.Value;
int height = (int)nudHeight.Value;
if (width == 0 || height == 0) {
MessageBox.Show(
"Invalid width or height, both must be greater than 0",
"Invalid Parameters",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
return;
}
var input = new Inputs {
Color = color,
Randomness = randomness
};
Painter.Do(input);
pbResult.Image = Painter.BitMap;
pbResult.SizeMode = PictureBoxSizeMode.StretchImage;
}
public void Do(Inputs input)
{
int pix;
var ran = new Random();
int red, green, blue;
// Range of possible hues, from 0 to 255
int maxHueRange = (int)(((float)input.Color / 100) * 255); // 0 - 255
int michal = (int)((float)input.Randomness * 2.55);
// Start at a random position
int x = ran.Next(_bitmap.Width);
int y = ran.Next(_bitmap.Height);
int dirX = ran.Next(3) - 1;
int dirY = ran.Next(3) - 1;
int last = ran.Next(256);
int startX = x;
int startY = y;
for (int i = 0; i < _bitmap.Width * _bitmap.Height * .10;) {
if (ran.Next(100) <= input.Randomness) {
dirX = ran.Next(3) - 1;
dirY = ran.Next(3) - 1;
}
red = ran.Next(last, last + maxHueRange) % 256;
green = (ran.Next(red, red + maxHueRange)) % 256;
blue = (ran.Next(red, red + maxHueRange)) % 256;
x += dirX;
y += dirY;
if (x < 0 || y < 0 || x >= _bitmap.Width || y >= _bitmap.Height) {
x = ran.Next(_bitmap.Width);
y = ran.Next(_bitmap.Height);
dirX = ran.Next(3) - 1;
dirY = ran.Next(3) - 1;
continue;
}
pix = (255 << 24) | (red << 16) | (green << 8) | (blue);
_bitmap.SetPixel(x, y, Color.FromArgb(pix));
++i;
}
}