protected virtual void ReadGeometryPositions( short bindIdx, BinaryReader reader, VertexData data )
{
data.vertexDeclaration.AddElement( bindIdx, 0, VertexElementType.Float3, VertexElementSemantic.Position );
// Reading to nothing!
float[] barray = new float[data.vertexCount * 3];
ReadFloats(reader, data.vertexCount * 3, barray);
}
protected virtual void ReadGeometryTexCoords( short bindIdx, BinaryReader reader, VertexData data, int coordSet )
{
short dim = ReadShort( reader );
data.vertexDeclaration.AddElement(
bindIdx, 0,
VertexElement.MultiplyTypeCount( VertexElementType.Float1, dim ),
VertexElementSemantic.TexCoords,
coordSet );
// reading to nothing!
float[] barray = new float[data.vertexCount * dim];
ReadFloats(reader, data.vertexCount * dim, barray);
}
protected override void ReadGeometry( BinaryReader reader, VertexData data )
{
ushort texCoordSet = 0;
short bindIdx = 0;
data.vertexStart = 0;
data.vertexCount = ReadInt(reader);
ReadGeometryPositions( bindIdx++, reader, data );
if ( !IsEOF( reader ) )
{
MeshChunkID cid = ReadChunk( reader );
while ( !IsEOF( reader ) &&
( cid == MeshChunkID.GeometryNormals ||
cid == MeshChunkID.GeometryColors ||
cid == MeshChunkID.GeometryTexCoords ) )
{
switch ( cid )
{
case MeshChunkID.GeometryNormals: ReadGeometryNormals( bindIdx++, reader, data ); break;
case MeshChunkID.GeometryColors: ReadGeometryColors( bindIdx++, reader, data ); break;
case MeshChunkID.GeometryTexCoords: ReadGeometryTexCoords( bindIdx++, reader, data, texCoordSet++ ); break;
}
if ( !IsEOF( reader ) )
cid = ReadChunk( reader );
}
if(!IsEOF(reader))
Seek(reader,-ChunkOverheadSize);
}
}
protected virtual void ReadGeometryColors( short bindIdx, BinaryReader reader, VertexData data )
{
data.vertexDeclaration.AddElement( bindIdx, 0, VertexElementType.Color, VertexElementSemantic.Diffuse );
// reading to nothing!
int[] barray = new int[data.vertexCount];
ReadInts(reader, data.vertexCount, barray);
}
protected override void ReadGeometryTexCoords( short bindIdx, BinaryReader reader, VertexData data, int coordSet )
{
short dim = ReadShort(reader);
data.vertexDeclaration.AddElement(
bindIdx, 0, VertexElement.MultiplyTypeCount( VertexElementType.Float1, dim),
VertexElementSemantic.TexCoords,coordSet);
// reading to nothing!
float[] barray = new float[data.vertexCount * dim];
ReadFloats(reader, data.vertexCount * dim, barray);
/*
if ( dim == 2 )
{
int count = 0;
unsafe
{
float* pTex = (float*)texCoords.ToPointer();
for ( int i = 0; i < data.vertexCount; i++ )
{
count++; // skip u
pTex[ count ] = 1.0f - pTex[ count ]; // v = 1 - v
count++;
}
}
}
*/
}
protected virtual void ReadGeometryVertexElement(BinaryReader reader, VertexData data)
{
short source = ReadShort(reader);
VertexElementType type = (VertexElementType)ReadShort(reader);
VertexElementSemantic semantic = (VertexElementSemantic)ReadShort(reader);
short offset = ReadShort(reader);
short index = ReadShort(reader);
data.vertexDeclaration.AddElement(source, offset, type, semantic, index);
}
protected virtual void ReadGeometryVertexDeclaration( BinaryReader reader, VertexData data )
{
if ( !IsEOF( reader ) )
{
MeshChunkID cid = ReadChunk( reader );
while ( !IsEOF( reader ) &&
( cid == MeshChunkID.GeometryVertexElement ) )
{
switch ( cid )
{
case MeshChunkID.GeometryVertexElement:
ReadGeometryVertexElement( reader, data );
break;
}
if ( !IsEOF( reader ) )
cid = ReadChunk( reader );
}
if ( !IsEOF( reader ) )
Seek( reader, -ChunkOverheadSize );
}
}
protected virtual void ReadGeometryVertexBuffer( BinaryReader reader, VertexData data )
{
short bindIdx = ReadShort( reader );
short vertexSize = ReadShort( reader );
MeshChunkID cid = ReadChunk( reader );
if ( cid != MeshChunkID.GeometryVertexBufferData )
throw new Exception("Missing vertex buffer data");
if(data.vertexDeclaration.GetVertexSize( bindIdx ) != vertexSize)
throw new Exception("Vertex decl size and vertex buffer size mismatch");
data.vertexBuffer = new byte[data.vertexCount * vertexSize];
ReadBytes(reader, data.vertexCount * vertexSize, data.vertexBuffer);
}
protected virtual void ReadGeometry( BinaryReader reader, VertexData data)
{
data.vertexStart = 0;
data.vertexCount = ReadInt(reader);
if (!IsEOF(reader))
{
MeshChunkID cid = ReadChunk(reader);
while ( !IsEOF( reader ) &&
( cid == MeshChunkID.GeometryVertexDeclaration ||
cid == MeshChunkID.GeometryVertexBuffer ) )
{
switch ( cid )
{
case MeshChunkID.GeometryVertexDeclaration:
ReadGeometryVertexDeclaration( reader, data );
break;
case MeshChunkID.GeometryVertexBuffer:
ReadGeometryVertexBuffer( reader, data );
break;
}
if ( !IsEOF( reader ) )
cid = ReadChunk( reader );
}
if(!IsEOF(reader))
Seek(reader,-ChunkOverheadSize);
}
}
