/// <summary>
/// Init a new VoronoiEngine with a list of points
/// </summary>
/// <param name="points"></param>
public VoronoiEngine(List <VoronoiPoint> points, ColorRampEnum colorRamp = ColorRampEnum.RAINBOW, ApplyColorDirectionEnum colorDirection = ApplyColorDirectionEnum.NONE)
{
this._points = points;
this.ApplyColorRamp(colorRamp, colorDirection);
}
/// <summary>
/// Apply a color ramp according to provided enum
/// </summary>
/// <param name="ramp"></param>
/// <returns></returns>
private void ApplyColorRamp(ColorRampEnum ramp, ApplyColorDirectionEnum colorDirection = ApplyColorDirectionEnum.NONE)
{
var pointCount = this._points.Count;
if (colorDirection == ApplyColorDirectionEnum.HORIZONTAL)
{
this._points.Sort((a, b) => a.RelativeCoordinates.X.CompareTo(b.RelativeCoordinates.X));
}
else if (colorDirection == ApplyColorDirectionEnum.VERTICAL)
{
this._points.Sort((a, b) => a.RelativeCoordinates.Y.CompareTo(b.RelativeCoordinates.Y));
}
if (ramp == ColorRampEnum.GRAY_SCALE)
{
for (int i = 0; i < pointCount; i++)
{
var comp = (int)(i * 256.0 / pointCount);
this._points[i].Color = new Color(comp, comp, comp);
}
}
else if (ramp == ColorRampEnum.RAINBOW)
{
for (int i = 0; i < pointCount; i++)
{
this._points[i].Color = Toolkit.FromHsl(i / 20.0f, 1f, 0.5f);
}
}
else if (ramp == ColorRampEnum.OCEAN)
{
var colors = Toolkit.GenerateRampBetween(Color.Blue, Color.White, this._points.Count);
for (int i = 0; i < this._points.Count; i++)
{
this._points[i].Color = colors[i];
}
}
else if (ramp == ColorRampEnum.DARK_LEAF)
{
var colors = Toolkit.GenerateRampBetween(Color.Green, Color.Black, this._points.Count);
for (int i = 0; i < this._points.Count; i++)
{
this._points[i].Color = colors[i];
}
}
else if (ramp == ColorRampEnum.LAVA)
{
var colors = Toolkit.GenerateRampBetween(Color.Yellow, Color.Red, this._points.Count);
for (int i = 0; i < this._points.Count; i++)
{
this._points[i].Color = colors[i];
}
}
else if (ramp == ColorRampEnum.RANDOM)
{
for (int i = 0; i < pointCount; i++)
{
this._points[i].Color = new Color(
this._random.Next(0, 255),
this._random.Next(0, 255),
this._random.Next(0, 255)
);
}
}
}
/// <summary>
/// Init a new Voronoi engine
/// </summary>
/// <param name="nbOfPoints"></param>
public VoronoiEngine(int nbOfPoints, ColorRampEnum colorRamp = ColorRampEnum.RAINBOW, ApplyColorDirectionEnum colorDirection = ApplyColorDirectionEnum.NONE) : this()
{
for (var i = 0; i < nbOfPoints; i++)
{
this._points.Add(new VoronoiPoint
{
Color = Color.Black,
InitialCoordinates = new Vector2
{
X = this._random.Next(0, 100) / 100.0f,
Y = this._random.Next(0, 100) / 100.0f
}
});
}
this.ApplyColorRamp(colorRamp, colorDirection);
}
