void StringBuilder::clear()
{
len = 0;
nextchar = 0;
if (chunk == NULL)
pushChunk();
while (chunk->next != NULL)
popChunk();
}
bool Loader3ds::loadFile( const String &filename )
{
//Try to open file
File module = File::GetModule();
file = module.getRelativeFile( filename );
fileSize = (int) file.getSize();
if( !file.open( "rb" )) return false;
//Read main chunk info
ChunkInfo mainChunk;
readChunkInfo( &mainChunk );
if( mainChunk.id != CHUNK_MAIN )
return false;
pushChunk( mainChunk );
//Create root object node
root = new Actor3D();
//Process sub-chunks
while( !isChunkDone() )
{
ChunkInfo subChunk;
readChunkInfo( &subChunk );
pushChunk( subChunk );
switch( subChunk.id ){
case CHUNK_EDITOR:
chunk_EDITOR();
break;
case CHUNK_KEYFRAMER:
chunk_KEYFRAMER();
break;
default:;
}
popChunk();
}
//End main chunk
popChunk();
file.close();
return true;
}
//---------------------------------------------------------------------
void StreamSerialiser::undoReadChunk(uint32 id)
{
Chunk* c = popChunk(id);
checkStream();
mStream->seek(c->offset);
OGRE_DELETE c;
}
//---------------------------------------------------------------------
void StreamSerialiser::readChunkEnd(uint32 id)
{
Chunk* c = popChunk(id);
checkStream();
// skip to the end of the chunk if we were not there already
// this lets us quite reading a chunk anywhere and have the read marker
// automatically skip to the next one
if (mStream->tell() < (c->offset + CHUNK_HEADER_SIZE + c->length))
mStream->seek(c->offset + CHUNK_HEADER_SIZE + c->length);
OGRE_DELETE c;
}
void Loader3ds::chunk_MESH (const String &id)
{
//Create new mesh resource
PolyMesh *mesh = new PolyMesh;
resources.pushBack(mesh);
//Create new shape object
PolyMeshActor *shape = new PolyMeshActor;
shape->setId (id);
shape->setMesh (mesh);
objects.pushBack (shape);
root->addChild (shape);
//Temporary lists
VertArray verts;
FaceArray faces;
UVArray uvcoords;
//Process sub-chunks
while (!isChunkDone()) {
ChunkInfo subChunk;
readChunkInfo(&subChunk);
pushChunk(subChunk);
switch(subChunk.id) {
case CHUNK_MESH_VERTEX_LIST:
chunk_MESH_VERTEX_LIST (mesh, &verts);
break;
case CHUNK_MESH_TEX_COORD_LIST:
chunk_MESH_TEX_COORD_LIST (mesh, &uvcoords);
break;
case CHUNK_MESH_FACE_LIST:
chunk_MESH_FACE_LIST (mesh, &verts, &uvcoords, &faces);
break;
default:;
}
popChunk();
}
//Apply tex coords to faces
for (UintSize f=0; f<faces.size(); ++f) {
}
}
void Loader3ds::chunk_EDITOR ()
{
//Process sub-chukns
while(!isChunkDone()) {
ChunkInfo subChunk;
readChunkInfo(&subChunk);
pushChunk(subChunk);
switch(subChunk.id) {
case CHUNK_OBJECT:
chunk_OBJECT();
break;
default:;
}
popChunk();
}
}
void Loader3ds::chunk_OBJECT ()
{
//get object name
String id = readString();
//Proccess sub-chunks
while (!isChunkDone()) {
ChunkInfo subChunk;
readChunkInfo(&subChunk);
pushChunk(subChunk);
switch(subChunk.id) {
case CHUNK_MESH:
chunk_MESH(id);
break;
default:;
}
popChunk();
}
}
//---------------------------------------------------------------------
void StreamSerialiser::writeChunkEnd(uint32 id)
{
checkStream(false, false, true);
Chunk* c = popChunk(id);
// update the sizes
size_t currPos = mStream->tell();
c->length = static_cast<uint32>(currPos - c->offset - CHUNK_HEADER_SIZE);
// seek to 'length' position in stream for this chunk
// skip id (32) and version (16)
mStream->seek(c->offset + sizeof(uint32) + sizeof(uint16));
write(&c->length);
// write updated checksum
uint32 checksum = calculateChecksum(c);
write(&checksum);
// seek back to previous position
mStream->seek(currPos);
OGRE_DELETE c;
}
StringBuilder::~StringBuilder()
{
while (chunk != NULL)
popChunk();
}
void Loader3ds::chunk_MESH_FACE_LIST (PolyMesh *mesh, VertArray *verts,
UVArray *uvcoords, FaceArray *faces)
{
//Read number of faces
Int16 faceCount = 0;
if (file.readLE(&faceCount, 2) != 2)
return;
for (int i=0; i<faceCount; ++i) {
//Read vertex indices
Int16 i1, i2, i3;
Int16 flag;
if (file.readLE(&i1, 2) != 2) return;
if (file.readLE(&i2, 2) != 2) return;
if (file.readLE(&i3, 2) != 2) return;
if (file.readLE(&flag, 2) != 2) return;
//Make sure indices are in vertex range
if (i1 < 0 || i1 >= (Int16) verts->size()) return;
if (i2 < 0 || i2 >= (Int16) verts->size()) return;
if (i3 < 0 || i3 >= (Int16) verts->size()) return;
//Add face to mesh
PolyMesh::Vertex* v[3] = {
verts->elementAt(i1),
verts->elementAt(i2),
verts->elementAt(i3) };
PolyMesh::Face* face = mesh->addFace(v, 3);
faces->pushBack(face);
//Make sure indices are in UV range
if (i1 >= (Int16) uvcoords->size()) continue;
if (i2 >= (Int16) uvcoords->size()) continue;
if (i3 >= (Int16) uvcoords->size()) continue;
//Apply UV coordinates
//TODO: Add UV face instead
//DMesh::HalfEdge *h = face->hedgeTo(v[0]);
//if (h == NULL) return;
//h->uv = uvcoords->elementAt(i1);
//h->nextHedge()->uv = uvcoords->elementAt(i2);
//h->nextHedge()->nextHedge()->uv = uvcoords->elementAt(i3);
}
//Process sub-chunks
while (!isChunkDone()) {
ChunkInfo subChunk;
readChunkInfo(&subChunk);
pushChunk(subChunk);
switch(subChunk.id) {
case CHUNK_MESH_FACE_SMOOTH_GROUP_LIST:
chunk_MESH_FACE_SMOOTH_GROUP_LIST(mesh, faces);
break;
default:;
}
popChunk();
}
}
