public SphereDataView(SphereData originalSphereData, Point3D position, Color color, double radius)
{
OriginalSphereData = originalSphereData;
Position = position;
Color = color;
Radius = radius;
ScreenPosition = new Point(double.NaN, double.NaN);
}
public static SphereDataView Create(SphereData originalSphereData, Rect3D displayedDataBounds, double maxTime, Rect xyDataRange, Color color)
{
// First calculate normalized values (from 0 to 1)
double x = originalSphereData.Time / maxTime;
double y = (originalSphereData.Location.Y - xyDataRange.Y) / xyDataRange.Height;
double z = (originalSphereData.Location.X - xyDataRange.X) / xyDataRange.Width;
// Now put normalized values into a 3D space that is defined by displayedDataBounds
x = (x * displayedDataBounds.SizeX) + displayedDataBounds.X;
y = (y * displayedDataBounds.SizeY) + displayedDataBounds.Y;
z = (z * displayedDataBounds.SizeZ) + displayedDataBounds.Z;
Point3D position3D = new Point3D(x, y, z);
// Now we have all the data to create the SphereDataView
var sphereDataView = new SphereDataView(originalSphereData, position3D, color, originalSphereData.Size);
return(sphereDataView);
}
public static List <SphereData> GenerateRandomData(Rect xyDataRange, double relativeMargin, int dataCount)
{
// originalData will hold our original random data
var originalData = new List <SphereData>();
// Start in the middle
var minX = xyDataRange.X;
var minY = xyDataRange.Y;
var maxX = xyDataRange.X + xyDataRange.Width;
var maxY = xyDataRange.Y + xyDataRange.Height;
minX += relativeMargin * xyDataRange.Width * 0.5;
minY += relativeMargin * xyDataRange.Height * 0.5;
maxX -= relativeMargin * xyDataRange.Width * 0.5;
maxY -= relativeMargin * xyDataRange.Height * 0.5;
// Set the initial position at the center of the xyDataRange
double x = xyDataRange.X + xyDataRange.Width * 0.5;
double y = xyDataRange.Y + xyDataRange.Height * 0.5;
double vx = 0; // velocity
double vy = 0;
var rnd = new Random();
double randomizationFactor = 0.1; // How much data can adjust its position in one step (30%)
// Add some random data - start at (x,y) and then move in random mostly positive direction
for (int i = 0; i < dataCount; i++)
{
// Get random positive offset
double dx = xyDataRange.Width * randomizationFactor * (rnd.NextDouble() * 2 - 1); // random from -1 to +1
double dy = xyDataRange.Height * randomizationFactor * (rnd.NextDouble() * 2 - 1);
// Change velocity
vx += dx;
vy += dy;
// change position based on current velocity
x += vx;
y += vy;
// Prevent going out of limits
if (x < minX)
{
x = minX + (minX - x);
vx = -vx;
}
else if (x > maxX)
{
x = maxX - (x - maxX);
vx = -vx;
}
if (y < minY)
{
y = minY + (minY - y);
vy = -vy;
}
else if (y > maxY)
{
y = maxY - (y - maxY);
vy = -vy;
}
// Just in case velocity is very high, we ensure that the values does not go out of bounds
x = Math.Max(minX, Math.Min(maxX, x));
y = Math.Max(minY, Math.Min(maxY, y));
double sphereSize = rnd.NextDouble() * 3 + 1;
var sphereData = new SphereData(time: i + 1, location: new Point(x, y), size: sphereSize);
originalData.Add(sphereData);
}
return(originalData);
}
