private TerrainChunkMeshData GetInterpolatedDataLod(int lodLevel, int[] neighbors)
{
var lod = Consts.LodsAmount - lodLevel - _maxDataLod;
var amount = (HeigthData.GetLength(0) - 1) * ((int)Mathf.Pow(2, lod)) + 1;
var matrix = Assistant.CreateVerticesMatrix(amount, Consts.UnitSize);
for (int i = 0; i < HeigthData.GetLength(0) - 1; i++)
{
for (int j = 0; j < HeigthData.GetLength(1) - 1; j++)
{
var interpolatedData = GetInterpolatedData(new Int2(i + 1, j), (int)Mathf.Pow(2, lod) - 1);
for (int k = 0; k < interpolatedData.GetLength(0); k++)
{
for (int l = 0; l < interpolatedData.GetLength(1); l++)
{
matrix[i * (interpolatedData.GetLength(0) - 1) + k, j *(interpolatedData.GetLength(0) - 1) + l].y = interpolatedData[k, interpolatedData.GetLength(1) - 1 - l] * MaxHeight;
}
}
}
}
var verts = Assistant.CheckNeighbors(matrix, lodLevel, neighbors).ToArray();
var data = new TerrainChunkMeshData()
{
Vertices = verts,
Colors32 = Assistant.CreateColorsFromVerticies(verts),
Triangles = Assistant.CreateTriangles(amount),
UVs = Assistant.CreateUvs(amount),
Lod = lodLevel
};
PostProcessChunkMeshData(ref data);
return(data);
}
private TerrainChunkMeshData GetBaseDataLod(int lodLevel, int[] neighbors)
{
var amount = (HeigthData.GetLength(0));
var verts = Assistant.CheckNeighbors(PickDataVertices(1), lodLevel, neighbors).ToArray();
var data = new TerrainChunkMeshData()
{
Vertices = verts,
Colors32 = Assistant.CreateColorsFromVerticies(verts),
Triangles = Assistant.CreateTriangles(amount),
UVs = Assistant.CreateUvs(amount),
Lod = lodLevel
};
PostProcessChunkMeshData(ref data);
return(data);
}
private TerrainChunkMeshData GetSeaBottomData(int lodLevel)
{
var amount = 2;
var verts = PickDataVertices(HeigthData.GetLength(0) - 1).ToArray();
var data = new TerrainChunkMeshData()
{
Vertices = verts,
Colors32 = Assistant.CreateColorsFromVerticies(verts),
Triangles = Assistant.CreateTriangles(amount),
UVs = Assistant.CreateUvs(amount),
Lod = lodLevel
};
PostProcessChunkMeshData(ref data);
return(data);
}
private void PostProcessChunkMeshData(ref TerrainChunkMeshData data)
{
if (data.Lod > _maxDataLod)
{
return;
}
var newVertices = new Vector3[data.Triangles.Length];
var newUv = new Vector2[data.Triangles.Length];
var newTriangles = new int[data.Triangles.Length];
var newColors = new Color32[data.Triangles.Length];
var newNormals = new Vector3[data.Triangles.Length];
var trCount = 0;
for (var i = 0; i < data.Triangles.Length; i++)
{
newVertices[i] = data.Vertices[data.Triangles[i]];
newUv[i] = data.UVs[data.Triangles[i]];
newTriangles[i] = i;
if (trCount == 0)
{
newNormals[i] = newNormals[i + 1] = newNormals[i + 2] = CalculateNormal(data.Vertices[data.Triangles[i]], data.Vertices[data.Triangles[i + 1]], data.Vertices[data.Triangles[i + 2]]);
newColors[i] = newColors[i + 1] = newColors[i + 2] = data.Colors32[data.Triangles[i]];
}
trCount++;
if (trCount == 3)
{
trCount = 0;
}
}
data.Vertices = newVertices;
data.UVs = newUv;
data.Triangles = newTriangles;
//data.Colors32 = newColors;
data.Colors32 = Assistant.CreateColorsFromVerticies(data.Vertices, data.Normals);
data.Normals = newNormals;
}
private TerrainChunkMeshData GetDataLod(int lodLevel, int[] neighbors)
{
var lod = Consts.LodsAmount - lodLevel;
if (lod > _maxDataLod - 1)
{
lod = _maxDataLod - 1;
}
var length = HeigthData.GetLength(0);
var step = (length - 1) / (int)Mathf.Pow(2, lod);
var amount = (length - 1) / step + 1;
var verts = Assistant.CheckNeighbors(PickDataVertices(step), lodLevel, neighbors).ToArray();
var data = new TerrainChunkMeshData()
{
Vertices = verts,
Colors32 = Assistant.CreateColorsFromVerticies(verts),
Triangles = Assistant.CreateTriangles(amount),
UVs = Assistant.CreateUvs(amount),
Lod = lodLevel
};
PostProcessChunkMeshData(ref data);
return(data);
}
