public static int[] CreateDottedImage(int width, int height)
{
Random rnd = new Random();
const int pointsNum = 100000;
const double radius = 1.5;
var randomPoints = Enumerable.Range(0, pointsNum).Select(_ => new Point(rnd.NextDouble() * width, rnd.NextDouble() * height));
randomPoints = Filter(randomPoints, radius);
DrawingGroup drawing = new DrawingGroup();
var dc = drawing.Append();
foreach (var point in randomPoints)
{
HsbColor color = new HsbColor(0, 0, Math.Round(5 * rnd.NextDouble()) / 4);
SolidColorBrush brush = new SolidColorBrush(color.ToArgbColor());
//drawing.Children.Add(new GeometryDrawing(brush, null, new EllipseGeometry(point, radius, radius)));
dc.DrawEllipse(brush, null, point, radius, radius);
}
dc.Close();
DrawingImage drawingImage = new DrawingImage();
drawingImage.Drawing = drawing;
drawingImage.Freeze();
if ((imageCreatingThread.ThreadState | ThreadState.Running) != imageCreatingThread.ThreadState)
imageCreatingThread.Start();
imageQueue.Add(new RequestInfo { Width = width, Heigth = height, DrawingImage = drawingImage });
var pixels = resultQueue.Take();
return pixels;
}
private void Page_Loaded(object sender, RoutedEventArgs e)
{
AddRandomPoint();
AddRandomPoint();
AddRandomPoint();
// these are functions that sets different properties of drawn ellipses;
// these functions can be replaced by real, non-demo ones.
chart.AddPropertyBindingForNamedPart <Point>("ellipse", Ellipse.FillProperty, p =>
{
double hue = Math.Sin(1000 * (p.X + p.Y)) * 180 + 180;
var color = new HsbColor(hue, 0.2, 1);
return(new SolidColorBrush(color.ToArgbColor()).MakeTransparent(0.7));
});
chart.AddPropertyBindingForNamedPart <Point>("ellipse", Ellipse.StrokeProperty, p =>
{
double hue = Math.Sin(1000 * (p.X + p.Y)) * 180 + 180;
var color = new HsbColor(hue, 1, 1);
return(new SolidColorBrush(color.ToArgbColor()));
});
chart.AddPropertyBindingForNamedPart <Point>("ellipse", Ellipse.RenderTransformProperty, p => new RotateTransform(120 * Math.Atan2(p.Y, p.X)));
chart.AddPropertyBinding <Point>(ViewportPanel.ViewportWidthProperty, p => 0.2 * Math.Abs(Math.Sin(p.X)));
chart.AddPropertyBinding <Point>(ViewportPanel.ViewportHeightProperty, p => 0.2 * Math.Abs(Math.Cos(p.X)));
DataContext = points;
}
private static void ChangeFill(Ellipse ellipse, double sign)
{
Color fill = ((SolidColorBrush)ellipse.Fill).Color;
HsbColor hsb = fill.ToHsbColor();
hsb.Hue = (hsb.Hue + sign * 70) % 360;
Color newColor = hsb.ToArgbColor();
if (newColor.A == 0 || (newColor.R == 0 && newColor.G == 0 && newColor.B == 0))
{
Debugger.Break();
}
var brush = new SolidColorBrush(newColor);
ellipse.Fill = brush;
}
public Color GetColor(double t)
{
Verify.AssertIsFinite(t);
Verify.IsTrue(0 <= t && t <= 1);
if (t <= 0)
{
return(colors[0]);
}
else if (t >= 1)
{
return(colors[colors.Count - 1]);
}
else
{
int i = 0;
while (points[i] < t)
{
i++;
}
double ratio = (points[i] - t) / (points[i] - points[i - 1]);
Verify.IsTrue(0 <= ratio && ratio <= 1);
Color c0 = colors[i - 1];
Color c1 = colors[i];
Color res = Color.FromRgb(
(byte)(c0.R * ratio + c1.R * (1 - ratio)),
(byte)(c0.G * ratio + c1.G * (1 - ratio)),
(byte)(c0.B * ratio + c1.B * (1 - ratio)));
// Increasing saturation and brightness
if (increaseBrightness)
{
HsbColor hsb = res.ToHsbColor();
//hsb.Saturation = 0.5 * (1 + hsb.Saturation);
hsb.Brightness = 0.5 * (1 + hsb.Brightness);
return(hsb.ToArgbColor());
}
else
{
return(res);
}
}
}
public static int[] CreateDottedImage(int width, int height)
{
Random rnd = new Random();
const int pointsNum = 100000;
const double radius = 1.5;
var randomPoints = Enumerable.Range(0, pointsNum).Select(_ => new Point(rnd.NextDouble() * width, rnd.NextDouble() * height));
randomPoints = Filter(randomPoints, radius);
DrawingGroup drawing = new DrawingGroup();
var dc = drawing.Append();
foreach (var point in randomPoints)
{
HsbColor color = new HsbColor(0, 0, Math.Round(5 * rnd.NextDouble()) / 4);
SolidColorBrush brush = new SolidColorBrush(color.ToArgbColor());
//drawing.Children.Add(new GeometryDrawing(brush, null, new EllipseGeometry(point, radius, radius)));
dc.DrawEllipse(brush, null, point, radius, radius);
}
dc.Close();
DrawingImage drawingImage = new DrawingImage();
drawingImage.Drawing = drawing;
drawingImage.Freeze();
if ((imageCreatingThread.ThreadState | ThreadState.Running) != imageCreatingThread.ThreadState)
{
imageCreatingThread.Start();
}
imageQueue.Add(new RequestInfo {
Width = width, Heigth = height, DrawingImage = drawingImage
});
var pixels = resultQueue.Take();
return(pixels);
}