void Mesh::transform()
{
const NifModel * nif = static_cast<const NifModel *>( iBlock.model() );
if ( ! nif || ! iBlock.isValid() )
{
clear();
return;
}
if ( upData )
{
upData = false;
// update for NiMesh
if ( nif->checkVersion( 0x14050000, 0 ) && nif->inherits( iBlock, "NiMesh" ) )
{
#ifndef QT_NO_DEBUG
// do stuff
qWarning() << "Entering NiMesh decoding...";
// mesh primitive type
QString meshPrimitiveType = NifValue::enumOptionName( "MeshPrimitiveType", nif->get<uint>( iData, "Primitive Type" ) );
qWarning() << "Mesh uses" << meshPrimitiveType;
for ( int i = 0; i < nif->rowCount( iData ); i ++ )
{
// each data reference is to a single data stream
quint32 stream = nif->getLink( iData.child( i, 0 ), "Stream" );
qWarning() << "Data stream: " << stream;
// can have multiple submeshes, unsure of exact meaning
ushort numSubmeshes = nif->get<ushort>( iData.child( i, 0 ), "Num Submeshes" );
qWarning() << "Submeshes: " << numSubmeshes;
QPersistentModelIndex submeshMap = nif->getIndex( iData.child( i, 0 ), "Submesh To Region Map" );
for ( int j = 0; j < numSubmeshes; j++ )
{
qWarning() << "Submesh" << j << "maps to region" << nif->get<ushort>( submeshMap.child( j, 0 ) );
}
// each stream can have multiple components, and each has a starting index
QMap<uint, QString> componentIndexMap;
int numComponents = nif->get<int>( iData.child( i, 0 ), "Num Components" );
qWarning() << "Components: " << numComponents;
// semantics determine the usage
QPersistentModelIndex componentSemantics = nif->getIndex( iData.child( i, 0 ), "Component Semantics" );
for( int j = 0; j < numComponents; j++ )
{
QString name = nif->get<QString>( componentSemantics.child( j, 0 ), "Name" );
uint index = nif->get<uint>( componentSemantics.child( j, 0 ), "Index" );
qWarning() << "Component" << name << "at position" << index << "of component" << j << "in stream" << stream;
componentIndexMap.insert( j, QString( "%1 %2").arg( name ).arg( index ) );
}
// now the data stream itself...
QPersistentModelIndex dataStream = nif->getBlock( stream );
QByteArray streamData = nif->get<QByteArray>( nif->getIndex( dataStream, "Data" ).child( 0, 0 ) );
QBuffer streamBuffer( &streamData );
streamBuffer.open( QIODevice::ReadOnly );
// probably won't use this
QDataStream streamReader( &streamData, QIODevice::ReadOnly );
// we should probably check the header here, but we expect things to be little endian
streamReader.setByteOrder( QDataStream::LittleEndian );
// each region exists within the data stream at the specified index
quint32 numRegions = nif->get<quint32>( dataStream, "Num Regions");
QPersistentModelIndex regions = nif->getIndex( dataStream, "Regions" );
quint32 totalIndices = 0;
if ( regions.isValid() )
{
qWarning() << numRegions << " regions in this stream";
for( quint32 j = 0; j < numRegions; j++ )
{
qWarning() << "Start index: " << nif->get<quint32>( regions.child( j, 0 ), "Start Index" );
qWarning() << "Num indices: " << nif->get<quint32>( regions.child( j, 0 ), "Num Indices" );
totalIndices += nif->get<quint32>( regions.child( j, 0 ), "Num Indices" );
}
qWarning() << totalIndices << "total indices in" << numRegions << "regions";
}
uint numStreamComponents = nif->get<uint>( dataStream, "Num Components" );
qWarning() << "Stream has" << numStreamComponents << "components";
QPersistentModelIndex streamComponents = nif->getIndex( dataStream, "Component Formats" );
// stream components are interleaved, so we need to know their type before we read them
QList<uint> typeList;
for( uint j = 0; j < numStreamComponents; j++ )
{
uint compFormat = nif->get<uint>( streamComponents.child( j, 0 ) );
QString compName = NifValue::enumOptionName( "ComponentFormat", compFormat );
qWarning() << "Component format is" << compName;
qWarning() << "Stored as a" << compName.split( "_" )[1];
typeList.append( compFormat - 1 );
// this can probably wait until we're reading the stream values
QString compNameIndex = componentIndexMap.value( j );
QString compType = compNameIndex.split( " " )[0];
uint startIndex = compNameIndex.split( " " )[1].toUInt();
qWarning() << "Component" << j << "contains" << compType << "starting at index" << startIndex;
// try and sort out texcoords here...
if( compType == "TEXCOORD" )
{
QVector<Vector2> tempCoords;
coords.append( tempCoords );
qWarning() << "Assigning coordinate set" << startIndex;
}
}
// for each component
// get the length
// get the underlying type (will probably need OpenEXR to deal with float16 types)
// read that type in, k times, where k is the length of the vector
// start index will not be 0 if eg. multiple UV maps, but hopefully we don't have multiple components
for( uint j = 0; j < totalIndices; j++ )
{
for( uint k = 0; k < numStreamComponents; k++ )
{
int typeLength = ( ( typeList[k] & 0x000F0000 ) >> 0x10 );
int typeSize = ( ( typeList[k] & 0x00000F00 ) >> 0x08 );
qWarning() << "Reading" << typeLength << "values" << typeSize << "bytes";
NifIStream tempInput( new NifModel, &streamBuffer );
QList<NifValue> values;
NifValue tempValue;
// if we had the right types, we could read in Vector etc. and not have the mess below
switch( ( typeList[k] & 0x00000FF0 ) >> 0x04 )
{
case 0x10:
tempValue.changeType( NifValue::tByte );
break;
case 0x21:
tempValue.changeType( NifValue::tShort );
break;
case 0x42:
tempValue.changeType( NifValue::tInt );
break;
case 0x43:
tempValue.changeType( NifValue::tFloat );
break;
}
for( int l = 0; l < typeLength; l++ )
{
tempInput.read( tempValue );
values.append( tempValue );
qWarning() << tempValue.toString();
}
QString compType = componentIndexMap.value( k ).split( " " )[0];
qWarning() << "Will store this value in" << compType;
// the mess begins...
if( NifValue::enumOptionName( "ComponentFormat", (typeList[k] + 1 ) ) == "F_FLOAT32_3" )
{
Vector3 tempVect3( values[0].toFloat(), values[1].toFloat(), values[2].toFloat() );
if( compType == "POSITION" )
{
verts.append( tempVect3 );
}
else if( compType == "NORMAL" )
{
norms.append( tempVect3 );
}
}
else if( compType == "INDEX" )
{
indices.append( values[0].toCount() );
}
else if( compType == "TEXCOORD" )
{
Vector2 tempVect2( values[0].toFloat(), values[1].toFloat() );
quint32 coordSet = componentIndexMap.value( k ).split( " " )[1].toUInt();
qWarning() << "Need to append" << tempVect2 << "to texcoords" << coordSet;
QVector<Vector2> currentSet = coords[coordSet];
currentSet.append( tempVect2 );
coords[coordSet] = currentSet;
}
}
}
// build triangles, strips etc.
if( meshPrimitiveType == "MESH_PRIMITIVE_TRIANGLES" )
{
for( int k = 0; k < indices.size(); )
{
Triangle tempTri( indices[k], indices[k+1], indices[k+2] );
qWarning() << "Inserting triangle" << tempTri;
triangles.append( tempTri );
k = k+3;
}
}
}
#endif
}
else
{
