private byte[] WriteShrubModels(List <Model> shrubmodels, int offset)
{
offset += shrubmodels.Count * 0x40;
var headBytes = new byte[shrubmodels.Count * 0x40];
var bodyBytes = new List <byte>();
for (int i = 0; i < shrubmodels.Count; i++)
{
ShrubModel g = (ShrubModel)shrubmodels[i];
byte[] tieByte = g.SerializeHead(offset);
byte[] bodBytes = g.SerializeBody(offset);
bodyBytes.AddRange(bodBytes);
offset += bodBytes.Length;
tieByte.CopyTo(headBytes, i * 0x40);
}
var outBytes = new byte[headBytes.Length + bodyBytes.Count];
headBytes.CopyTo(outBytes, 0);
bodyBytes.CopyTo(outBytes, headBytes.Length);
return(outBytes);
}
/// <summary>
/// Sets an internal variable to true if the object is to be culled.
/// Mobies and shrubs are culled by their drawDistance.
/// Ties, terrain and shrubs are culled by frustum culling.
/// </summary>
public void ComputeCulling(Camera camera, bool distanceCulling, bool frustumCulling)
{
if (distanceCulling)
{
float dist = (modelObject.position - camera.position).Length;
if (dist > renderDistance)
{
culled = true;
return;
}
}
if (frustumCulling)
{
if (type == RenderedObjectType.Terrain || type == RenderedObjectType.Tie || type == RenderedObjectType.Shrub)
{
Vector3 center = Vector3.Zero;
float size = 0.0f;
switch (type)
{
case RenderedObjectType.Terrain:
TerrainFragment frag = (TerrainFragment)modelObject;
center = frag.cullingCenter;
size = frag.cullingSize;
break;
case RenderedObjectType.Shrub:
ShrubModel shrub = (ShrubModel)modelObject.model;
center = new Vector3(shrub.cullingX, shrub.cullingY, shrub.cullingZ);
center = modelObject.rotation * center;
center += modelObject.position;
float shrubScale = MathF.MaxMagnitude(modelObject.scale.X, MathF.MaxMagnitude(modelObject.scale.Y, modelObject.scale.Z));
size = shrub.cullingRadius * shrubScale;
break;
case RenderedObjectType.Tie:
TieModel tie = (TieModel)modelObject.model;
center = new Vector3(tie.cullingX, tie.cullingY, tie.cullingZ);
center = modelObject.rotation * center;
center += modelObject.position;
float tieScale = MathF.MaxMagnitude(modelObject.scale.X, MathF.MaxMagnitude(modelObject.scale.Y, modelObject.scale.Z));
size = tie.cullingRadius * tieScale;
break;
}
for (int i = 0; i < 6; i++)
{
Vector3 planeNormal = camera.frustumPlaneNormals[i];
Vector3 planePoint = camera.frustumPlanePoints[i];
if (Vector3.Dot(center - planePoint, planeNormal) < -size)
{
culled = true;
return;
}
}
}
}
culled = false;
}
