public double GetSurfaceHeight(Vector3d planetLocalPosition, int detailDensity = 1)
{
double height = -1;
//planetLocalPosition.Normalize();
var rayFromPlanet = new RayD(Vector3d.Zero, planetLocalPosition);
var chunk = rootSegments.FirstOrDefault(c => rayFromPlanet.CastRay(c.NoElevationRange).DidHit);
if (chunk != null)
{
//lock (chunk)
{
int safe = 100;
while (chunk.Children.Count > 0 && chunk.Children.Any(c => c.IsGenerationDone) && safe-- > 0)
{
foreach (var child in chunk.Children)
{
if (child.IsGenerationDone && rayFromPlanet.CastRay(child.NoElevationRange).DidHit)
{
chunk = child;
}
}
}
}
var chunkLocalPosition = (planetLocalPosition - chunk.NoElevationRange.CenterPos);
height = chunk.GetHeight(chunkLocalPosition);
}
if (GetSurfaceHeightDebug)
{
if (height == -1)
{
height = RadiusMin;
if (chunk == null)
{
Scene.DebugShere(GetPosition(planetLocalPosition, height), 1000, new Vector4(1, 0, 0, 1));
}
else
{
Scene.DebugShere(GetPosition(planetLocalPosition, height), 1000, new Vector4(1, 1, 0, 1));
}
}
else
{
Scene.DebugShere(GetPosition(planetLocalPosition, height), 1000, new Vector4(0, 1, 0, 1));
}
}
return(height);
}
public double GetHeight(Vector3d chunkLocalPosition)
{
//var barycentricOnChunk = noElevationRange.CalculateBarycentric(planetLocalPosition);
//var u = barycentricOnChunk.X;
//var v = barycentricOnChunk.Y;
var triangles = GetMeshTriangles();
if (triangles != null)
{
var ray = new RayD(-CenterPosVec3.Normalized(), chunkLocalPosition);
foreach (var t in triangles)
{
var hit = ray.CastRay(t);
if (hit.DidHit)
{
return((ray.GetPoint(hit.HitDistance) + CenterPosVec3).Length);
}
}
}
return(-1);
}
