private void AllocateNodes()
{
zoom.Zoom = 1;
zoom.Offset = new Point(0, 0);
// Fill a sparse grid of rectangular color palette nodes with each tile being 50x30.
// with hue across x-axis and saturation on y-axis, brightness is fixed at 100;
Random r = new Random(Environment.TickCount);
grid.VirtualChildren.Clear();
double w = _tileWidth + _tileMargin;
double h = _tileHeight + _tileMargin;
int count = (rows * cols) / 20;
double width = (w * (cols - 1));
double height = (h * (rows - 1));
while (count > 0)
{
double x = r.NextDouble() * width;
double y = r.NextDouble() * height;
Point pos = new Point(_tileMargin + x, _tileMargin + y);
Size s = new Size(r.Next((int)_tileWidth, (int)_tileWidth * 5),
r.Next((int)_tileHeight, (int)_tileHeight * 5));
TestShapeType type = (TestShapeType)r.Next(0, (int)TestShapeType.Last);
//Color color = HlsColor.ColorFromHLS((x * 240) / cols, 100, 240 - ((y * 240) / rows));
TestShape shape = new TestShape(new Rect(pos, s), type, r);
SetRandomBrushes(shape, r);
grid.AddVirtualChild(shape);
count--;
}
}
public TestShape(Rect bounds, TestShapeType s, Random r)
{
_bounds = bounds;
_shape = s;
if (s == TestShapeType.Curve)
{
_bounds.Width *= 2;
_bounds.Height *= 2;
_points = new Point[3];
bounds = new Rect(0, 0, _bounds.Width, _bounds.Height);
switch (r.Next(0, 8))
{
case 0:
_points[0] = bounds.TopLeft;
_points[1] = bounds.TopRight;
_points[2] = bounds.BottomRight;
break;
case 1:
_points[0] = bounds.TopRight;
_points[1] = bounds.BottomRight;
_points[2] = bounds.BottomLeft;
break;
case 2:
_points[0] = bounds.BottomRight;
_points[1] = bounds.BottomLeft;
_points[2] = bounds.TopLeft;
break;
case 3:
_points[0] = bounds.BottomLeft;
_points[1] = bounds.TopLeft;
_points[2] = bounds.TopRight;
break;
case 4:
_points[0] = bounds.TopLeft;
_points[1] = new Point(bounds.Right, bounds.Height / 2);
_points[2] = bounds.BottomLeft;
break;
case 5:
_points[0] = bounds.TopRight;
_points[1] = new Point(bounds.Left, bounds.Height / 2);
_points[2] = bounds.BottomRight;
break;
case 6:
_points[0] = bounds.TopLeft;
_points[1] = new Point(bounds.Width / 2, bounds.Bottom);
_points[2] = bounds.TopRight;
break;
case 7:
_points[0] = bounds.BottomLeft;
_points[1] = new Point(bounds.Width / 2, bounds.Top);
_points[2] = bounds.BottomRight;
break;
}
}
}
