/// <summary>
/// Calculate the elevation data and create it as a Mesh (on CPU to use Physics)
/// </summary>
public void CaluclateVertex(PlanetChunkObject chunk)
{
int hCount2 = ChunkSegments + 2;
int vCount2 = ChunkSegments + 2;
int numVertices = hCount2 * vCount2;
vertexTmp.Clear();
normalTmp.Clear();
uvsTmp.Clear();
float Scale = chunk.Properties.Size / (float)ChunkSegments;
for (float y = 0; y < vCount2; y++)
{
for (float x = 0; x < hCount2; x++)
{
float px = chunk.Properties.BottomLeft.x + x * Scale - 0.5f;
float py = chunk.Properties.BottomLeft.y + y * Scale - 0.5f;
vertexTmp.Add(GeVertex(chunk.Properties.Rotation, SphereRadius, px, py));
uvsTmp.Add(chunk.Properties.BottomLeft + new Vector2(x * Scale, y * Scale));
}
}
VertexComputeBuffer.SetData(vertexTmp);
NormalComputeBuffer.SetData(normalTmp);
VertexComputeShader.SetFloat("Scale", Scale);
VertexComputeShader.SetFloat("TerrainScale", TerrainScale);
VertexComputeShader.SetFloat("TerrainBumpScale", TerrainBumpScale);
VertexComputeShader.Dispatch(0, numVertices / 16, 1, 1);
AsyncGPUReadback.Request(VertexComputeBuffer, chunk.ApplyVertexData);
AsyncGPUReadback.Request(NormalComputeBuffer, chunk.ApplyNormalData);
chunk.MarkCalculatingVertexData();
chunk.name = "Recycled Mesh";
chunk.Filter.sharedMesh.SetUVs(0, uvsTmp);
chunk.SetVisible(true);
if (chunk.Properties != null)
{
if (chunk.Properties.LODLevel >= LodColliderStart)
{
chunk.Collider.sharedMesh = null;
chunk.Collider.sharedMesh = chunk.Filter.sharedMesh;
chunk.Collider.enabled = true;
}
else
{
chunk.Collider.enabled = false;
}
chunk.Properties.Active = true;
}
}
/// <summary>
/// Update the Chunk mesh
/// </summary>
public void UpdateChunkMesh(PlanetChunkObject chunk)
{
if (chunk.Filter.sharedMesh == null)
{
chunk.Filter.sharedMesh = CopyMesh(BasicPlane);
}
CaluclateVertex(chunk);
}
/// <summary>
/// Get Free Chunk object if none exists, create
/// </summary>
public PlanetChunkObject GetFreeChunkObject(PlanetChunkProperties chunkProperties)
{
PlanetChunkObject c = GetChunkObjectFromPool();
if (c == null)
{
c = CreateBasicChunkObject();
}
UpdateChunkObject(chunkProperties, c);
return(c);
}
/// <summary>
/// Create a basic chunk
/// </summary>
private PlanetChunkObject CreateBasicChunkObject()
{
GameObject chunkObject = new GameObject("Chunk", typeof(MeshFilter), typeof(MeshCollider),
typeof(MeshRenderer), typeof(PlanetChunkObject));
PlanetChunkObject chunk = chunkObject.GetComponent <PlanetChunkObject>();
chunk.Filter = chunk.GetComponent <MeshFilter>();
chunk.Collider = chunk.GetComponent <MeshCollider>();
chunk.Renderer = chunk.GetComponent <Renderer>();
chunk.Renderer.sharedMaterial = mat;
return(chunk);
}
/// <summary>
/// add to chunk pool
/// </summary>
public void AddToChunkPool(PlanetChunkObject chunk)
{
MeshPool.Push(chunk);
}
//Update the chunk's position
public PlanetChunkObject UpdateChunkObject(PlanetChunkProperties chunkProperties, PlanetChunkObject chunk)
{
chunk.transform.localPosition = Vector3.zero;
chunk.Properties = chunkProperties;
chunkProperties.ChunkObject = chunk;
UpdateChunkMesh(chunk);
return(chunk);
}
