// Pick craters to be shaded with radial streaks emanating from them
void SetCraters(MoonShape moonShape)
{
PRNG random = new PRNG(ejectaRaySeed);
//int desiredNumCraterRays = random.Range (5, 15);
//desiredNumCraterRays = 2;
// Sort craters from largest to smallest
var sortedCraters = new List <CraterSettings.Crater> (moonShape.craterSettings.cachedCraters);
sortedCraters.Sort((a, b) => b.size.CompareTo(a.size));
int poolSize = Mathf.Clamp((int)((sortedCraters.Count - 1) * candidatePoolSize), 1, sortedCraters.Count);
sortedCraters = sortedCraters.GetRange(0, poolSize);
random.Shuffle(sortedCraters);
// Choose craters
var chosenCraters = new List <CraterSettings.Crater> ();
for (int i = 0; i < sortedCraters.Count; i++)
{
var currentCrater = sortedCraters[i];
// Reject those which are too close to already chosen craters as the textures may not overlap
bool overlapsOtherEjecta = false;
for (int j = 0; j < chosenCraters.Count; j++)
{
float dst = (currentCrater.centre - chosenCraters[j].centre).magnitude;
float ejectaRadiusSum = (currentCrater.size + chosenCraters[j].size) * ejectaRaysScale / 2;
if (dst < ejectaRadiusSum)
{
overlapsOtherEjecta = true;
break;
}
}
//Debug.DrawRay (currentCrater.centre, currentCrater.centre * 0.2f, (overlapsOtherEjecta) ? Color.red : Color.green);
if (!overlapsOtherEjecta)
{
chosenCraters.Add(currentCrater);
}
if (chosenCraters.Count >= desiredNumCraterRays)
{
break;
}
}
// Set
var ejectaCraters = new Vector4[chosenCraters.Count];
for (int i = 0; i < chosenCraters.Count; i++)
{
var crater = chosenCraters[i];
ejectaCraters[i] = new Vector4(crater.centre.x, crater.centre.y, crater.centre.z, crater.size * ejectaRaysScale);
//CustomDebug.DrawSphere (crater.centre, crater.size * ejectaRaysScale / 2, Color.yellow);
}
ComputeHelper.CreateAndSetBuffer <Vector4> (ref craterBuffer, ejectaCraters, shadingDataCompute, "ejectaCraters");
shadingDataCompute.SetInt("numEjectaCraters", chosenCraters.Count);
}
public override void Initialize(CelestialBodyShape shape)
{
base.Initialize(shape);
moonShape = shape as MoonShape;
}
