public void SetStarType(ref PosVel pv, float distPercent, float ellipseProgression)
{
if (starGroupTotals == 0)
{
foreach (var item in StarGroups)
{
starGroupTotals += item.Percentage * 0.01f; // This multiplied allows artists to use whole numbers in the UI.
}
}
float starType = Random.Range(0, starGroupTotals);
float total = 0;
for (int i = 0; i < StarGroups.Count; i++)
{
var sg = StarGroups[i];
total += sg.Percentage * 0.01f; // This multiplied allows artists to use whole numbers in the UI.
if (starType < total)
{
pv.uv = sg.UVOffset;
pv.color = sg.UseColorRange ? sg.ColorRange.Evaluate(Random.value) : centerToRimGradient.Evaluate(distPercent);
float sgSize = Random.Range(sg.SizeMultiplierRange.x, sg.SizeMultiplierRange.y);
pv.size = sg.SizeIsAbsolute ? sgSize : centerToRimStarSize.Evaluate(ellipseProgression) * sgSize;
pv.ellipseDistance += sg.RandomEllipseScaleOffset * ((Random.value * 2) - 1);
break;
}
}
}
public PosVel[] GenerateEllipse(float offset, float ellipseProgression)
{
List <PosVel> result = new List <PosVel>(StarsPerEllipse);
float ellipseScale = Mathf.Lerp(MinEllipseScale, MaxEllipseScale, ellipseProgression);
for (int i = 0; i < StarsPerEllipse; i++)
{
float x = 0;
float y = 0;
float z = 0;
float t = Random.Range(0, Mathf.PI * 2f);
var maxRadii = Mathf.Max(XRadii, ZRadii);
float maxDist = MaxEllipseScale * maxRadii;
x = Mathf.Cos(t) * XRadii;
z = Mathf.Sin(t) * ZRadii;
var zp = (z * Mathf.Cos(offset * Mathf.Deg2Rad)) - (x * Mathf.Sin(offset * Mathf.Deg2Rad));
var xp = (z * Mathf.Sin(offset * Mathf.Deg2Rad)) + (x * Mathf.Cos(offset * Mathf.Deg2Rad));
x = xp;
z = zp;
Vector3 flatPos = new Vector3(x, y, z);
float distance = flatPos.magnitude;
float distPercent = Mathf.InverseLerp(0, maxDist, distance) * ellipseProgression;
float verticalOffset = centerToRimVerticalOffset.Evaluate(distPercent) * YRange;
y = Random.Range(-verticalOffset, verticalOffset);
var pv = new PosVel();
pv.curveOffset = t;
pv.ellipseOffset = offset * Mathf.Deg2Rad;
pv.ellipseDistance = ellipseProgression;
pv.position = new Vector3(x * ellipseScale, y, z * ellipseScale);
SetStarType(ref pv, distPercent, ellipseProgression);
if (pv.size > 0)
{
result.Add(pv);
}
}
return(result.ToArray());
}