public void Write(Stream stream)
{
using (BinaryWriter bw = new BinaryWriter(stream))
{
NVRBuffers buffers = this.GenerateBuffers();
bw.Write(ASCIIEncoding.ASCII.GetBytes("NVR\0"));
bw.Write(this.MajorVersion);
bw.Write(this.MinorVersion);
bw.Write(buffers.Materials.Count);
bw.Write(buffers.VertexBuffers.Count);
bw.Write(buffers.IndexBuffers.Count);
bw.Write(buffers.Meshes.Count);
bw.Write(buffers.Nodes.Count);
foreach (NVRMaterial material in buffers.Materials)
{
material.Write(bw);
}
foreach (NVRVertexBuffer vertBuffer in buffers.VertexBuffers)
{
vertBuffer.Write(bw);
}
foreach (NVRIndexBuffer indBuffer in buffers.IndexBuffers)
{
indBuffer.Write(bw);
}
foreach (NVRMesh mesh in buffers.Meshes)
{
mesh.Write(bw);
}
foreach (NVRNode node in buffers.Nodes)
{
node.Write(bw);
}
}
}
public NVRMesh(BinaryReader br, NVRBuffers buffers, bool readOld)
{
this.QualityLevel = (NVRMeshQuality)br.ReadInt32();
if (!readOld)
{
this.Flag = br.ReadInt32();
}
this.BoundingSphere = new R3DSphere(br);
this.BoundingBox = new R3DBox(br);
this.Material = buffers.Materials[br.ReadInt32()];
this.IndexedPrimitives[0] = new NVRDrawIndexedPrimitive(br, buffers, this, true);
this.IndexedPrimitives[1] = new NVRDrawIndexedPrimitive(br, buffers, this, false);
}
public NVRNode(BinaryReader br, NVRBuffers buffers)
{
this.BoundingBox = new R3DBox(br);
this.FirstMesh = br.ReadInt32();
this.MeshCount = br.ReadInt32();
this.FirstChildNode = br.ReadInt32();
this.ChildNodeCount = br.ReadInt32();
if (this.FirstChildNode == -1)
{
for (int i = this.FirstMesh; i < this.FirstMesh + this.MeshCount; i++)
{
this.Meshes.Add(buffers.Meshes[i]);
}
}
}
public NVRFile(Stream stream)
{
using (BinaryReader br = new BinaryReader(stream))
{
//Reading magic and version
string magic = ASCIIEncoding.ASCII.GetString(br.ReadBytes(4));
if (magic != "NVR\0")
{
throw new InvalidFileSignatureException();
}
this.MajorVersion = br.ReadInt16();
this.MinorVersion = br.ReadInt16();
//Reading the counts
int materialsCount = br.ReadInt32();
int vertexBufferCount = br.ReadInt32();
int indexBufferCount = br.ReadInt32();
int meshesCount = br.ReadInt32();
int nodesCount = br.ReadInt32();
//Parse content
NVRBuffers buffers = new NVRBuffers();
for (int i = 0; i < materialsCount; i++)
{
buffers.Materials.Add(new NVRMaterial(br, (MajorVersion == 8 && MinorVersion == 1 ? true : false)));
}
for (int i = 0; i < vertexBufferCount; i++)
{
buffers.VertexBuffers.Add(new NVRVertexBuffer(br));
}
for (int i = 0; i < indexBufferCount; i++)
{
buffers.IndexBuffers.Add(new NVRIndexBuffer(br));
}
for (int i = 0; i < meshesCount; i++)
{
buffers.Meshes.Add(new NVRMesh(br, buffers, (MajorVersion == 8 && MinorVersion == 1 ? true : false)));
}
// Unused
for (int i = 0; i < nodesCount; i++)
{
buffers.Nodes.Add(new NVRNode(br, buffers));
}
this.Meshes = buffers.Meshes;
}
}
public NVRDrawIndexedPrimitive(BinaryReader br, NVRBuffers buffers, NVRMesh mesh, bool isComplex)
{
this.Parent = mesh;
// Read vertices
this.VertexBuffer = br.ReadInt32();
this.FirstVertex = br.ReadInt32();
this.VertexCount = br.ReadInt32();
long currentOffset = br.BaseStream.Position;
// Find vertex type
int vertexSize = 12;
if (isComplex)
{
this.VertexType = NVRVertex.GetVertexTypeFromMaterial(mesh.Material);
switch (VertexType)
{
case NVRVertexType.NVRVERTEX_4:
vertexSize = NVRVertex4.Size;
break;
case NVRVertexType.NVRVERTEX_8:
vertexSize = NVRVertex8.Size;
break;
case NVRVertexType.NVRVERTEX_12:
vertexSize = NVRVertex12.Size;
break;
}
}
//Parse vertices
br.BaseStream.Seek(buffers.VertexBuffers[VertexBuffer].Offset + FirstVertex * vertexSize, SeekOrigin.Begin);
for (int i = 0; i < VertexCount; i++)
{
NVRVertex newVertex;
switch (VertexType)
{
case NVRVertexType.NVRVERTEX_4:
newVertex = new NVRVertex4(br);
break;
case NVRVertexType.NVRVERTEX_8:
newVertex = new NVRVertex8(br);
break;
case NVRVertexType.NVRVERTEX_12:
newVertex = new NVRVertex12(br);
break;
default:
newVertex = new NVRVertex(br);
break;
}
this.Vertices.Add(newVertex);
}
// Store indices
br.BaseStream.Seek(currentOffset, SeekOrigin.Begin);
this.IndexBuffer = br.ReadInt32();
this.FirstIndex = br.ReadInt32();
this.IndexCount = br.ReadInt32();
for (int i = FirstIndex; i < FirstIndex + IndexCount; i++)
{
this.Indices.Add(buffers.IndexBuffers[IndexBuffer].Indices[i]);
}
// Fix indices
int indicesMin = FindMin(this.Indices);
for (int i = 0; i < this.Indices.Count; i++)
{
this.Indices[i] -= indicesMin;
}
}
// Generate buffers for writing
private NVRBuffers GenerateBuffers()
{
NVRBuffers buffers = new NVRBuffers();
// Material buffer
foreach (NVRMesh mesh in Meshes)
{
if (!buffers.Materials.Contains(mesh.Material))
{
buffers.Materials.Add(mesh.Material);
}
}
// Creating complex buffers first
foreach (NVRMesh mesh in Meshes)
{
NVRDrawIndexedPrimitive complexMesh = mesh.IndexedPrimitives[0];
NVRVertexType type = complexMesh.Vertices[0].GetVertexType();
NVRVertexBuffer vertBuffer = buffers.GetVertexBuffer(complexMesh.Vertices.Count, type);
int bufferIndex = buffers.VertexBuffers.IndexOf(vertBuffer);
NVRIndexBuffer indBuffer = buffers.GetIndexBuffer(bufferIndex);
complexMesh.IndexBuffer = bufferIndex;
complexMesh.VertexBuffer = bufferIndex;
complexMesh.FirstVertex = vertBuffer.Vertices.Count;
complexMesh.FirstIndex = indBuffer.Indices.Count;
complexMesh.IndexCount = complexMesh.Indices.Count;
complexMesh.VertexCount = complexMesh.Vertices.Count;
vertBuffer.Vertices.AddRange(complexMesh.Vertices);
int indBufferMax = indBuffer.CurrentMax + 1;
foreach (int index in complexMesh.Indices)
{
indBuffer.AddIndex(index + indBufferMax);
}
}
// Then do simple ones
foreach (NVRMesh mesh in Meshes)
{
NVRDrawIndexedPrimitive simpleMesh = mesh.IndexedPrimitives[1];
NVRVertexType type = simpleMesh.Vertices[0].GetVertexType();
NVRVertexBuffer vertBuffer = buffers.GetVertexBuffer(simpleMesh.Vertices.Count, type);
int bufferIndex = buffers.VertexBuffers.IndexOf(vertBuffer);
NVRIndexBuffer indBuffer = buffers.GetIndexBuffer(bufferIndex);
simpleMesh.IndexBuffer = bufferIndex;
simpleMesh.VertexBuffer = bufferIndex;
simpleMesh.FirstVertex = vertBuffer.Vertices.Count;
simpleMesh.FirstIndex = indBuffer.Indices.Count;
simpleMesh.IndexCount = simpleMesh.Indices.Count;
simpleMesh.VertexCount = simpleMesh.Vertices.Count;
vertBuffer.Vertices.AddRange(simpleMesh.Vertices);
int indBufferMax = indBuffer.CurrentMax + 1;
foreach (int index in simpleMesh.Indices)
{
indBuffer.AddIndex(index + indBufferMax);
}
}
NVRNode parentNode = this.CreateRootNode();
// Making mesh buffer
buffers.GenerateMeshBuffer(parentNode);
foreach (NVRMesh mesh in buffers.Meshes)
{
mesh.MaterialIndex = buffers.Materials.IndexOf(mesh.Material);
}
// Making node buffer
buffers.Nodes.Add(parentNode);
buffers.GenerateNodeBuffer(parentNode);
foreach (NVRNode node in buffers.Nodes)
{
if (node.Children.Count > 0)
{
node.FirstChildNode = buffers.Nodes.IndexOf(node.Children[0]);
}
else
{
node.FirstChildNode = -1;
}
}
return(buffers);
}
