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add mesh loader

pull/327/head
Gargaj 2014-08-06 14:06:08 +02:00
parent ad298cd84f
commit f38dd8e6e2
2 changed files with 164 additions and 5 deletions
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167
code/AssbinLoader.cpp
View File

@ -115,6 +115,12 @@ aiMatrix4x4 Read<aiMatrix4x4>(IOStream * stream)
return m;
}
template <typename T> void ReadBounds( IOStream * stream, T* p, unsigned int n )
{
// not sure what to do here, the data isn't really useful.
stream->Seek( sizeof(T) * n, aiOrigin_CUR );
}
void AssbinImporter::ReadBinaryNode( IOStream * stream, aiNode** node )
{
ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AINODE);
@ -145,6 +151,153 @@ void AssbinImporter::ReadBinaryNode( IOStream * stream, aiNode** node )
}
// -----------------------------------------------------------------------------------
void AssbinImporter::ReadBinaryBone( IOStream * stream, aiBone* b )
{
ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AIBONE );
uint32_t size = Read<uint32_t>(stream);
b->mName = Read<aiString>(stream);
b->mNumWeights = Read<unsigned int>(stream);
b->mOffsetMatrix = Read<aiMatrix4x4>(stream);
// for the moment we write dumb min/max values for the bones, too.
// maybe I'll add a better, hash-like solution later
if (shortened)
{
ReadBounds(stream,b->mWeights,b->mNumWeights);
} // else write as usual
else
{
b->mWeights = new aiVertexWeight[b->mNumWeights];
stream->Read(b->mWeights,1,b->mNumWeights*sizeof(aiVertexWeight));
}
}
void AssbinImporter::ReadBinaryMesh( IOStream * stream, aiMesh* mesh )
{
ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AIMESH);
uint32_t size = Read<uint32_t>(stream);
mesh->mPrimitiveTypes = Read<unsigned int>(stream);
mesh->mNumVertices = Read<unsigned int>(stream);
mesh->mNumFaces = Read<unsigned int>(stream);
mesh->mNumBones = Read<unsigned int>(stream);
mesh->mMaterialIndex = Read<unsigned int>(stream);
// first of all, write bits for all existent vertex components
unsigned int c = Read<unsigned int>(stream);
if (c & ASSBIN_MESH_HAS_POSITIONS)
{
if (shortened) {
ReadBounds(stream,mesh->mVertices,mesh->mNumVertices);
} // else write as usual
else
{
mesh->mVertices = new aiVector3D[mesh->mNumVertices];
stream->Read(mesh->mVertices,1,12*mesh->mNumVertices);
}
}
if (c & ASSBIN_MESH_HAS_NORMALS)
{
if (shortened) {
ReadBounds(stream,mesh->mNormals,mesh->mNumVertices);
} // else write as usual
else
{
mesh->mNormals = new aiVector3D[mesh->mNumVertices];
stream->Read(mesh->mNormals,1,12*mesh->mNumVertices);
}
}
if (c & ASSBIN_MESH_HAS_TANGENTS_AND_BITANGENTS)
{
if (shortened) {
ReadBounds(stream,mesh->mTangents,mesh->mNumVertices);
ReadBounds(stream,mesh->mBitangents,mesh->mNumVertices);
} // else write as usual
else {
mesh->mTangents = new aiVector3D[mesh->mNumVertices];
stream->Read(mesh->mTangents,1,12*mesh->mNumVertices);
mesh->mBitangents = new aiVector3D[mesh->mNumVertices];
stream->Read(mesh->mBitangents,1,12*mesh->mNumVertices);
}
}
for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_COLOR_SETS;++n)
{
if (!(c & ASSBIN_MESH_HAS_COLOR(n)))
break;
if (shortened)
{
ReadBounds(stream,mesh->mColors[n],mesh->mNumVertices);
} // else write as usual
else
{
mesh->mColors[n] = new aiColor4D[mesh->mNumVertices];
stream->Read(mesh->mColors[n],16*mesh->mNumVertices,1);
}
}
for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS;++n)
{
if (!(c & ASSBIN_MESH_HAS_TEXCOORD(n)))
break;
// write number of UV components
mesh->mNumUVComponents[n] = Read<unsigned int>(stream);
if (shortened) {
ReadBounds(stream,mesh->mTextureCoords[n],mesh->mNumVertices);
} // else write as usual
else
{
mesh->mTextureCoords[n] = new aiVector3D[mesh->mNumVertices];
stream->Read(mesh->mTextureCoords[n],12*mesh->mNumVertices,1);
}
}
// write faces. There are no floating-point calculations involved
// in these, so we can write a simple hash over the face data
// to the dump file. We generate a single 32 Bit hash for 512 faces
// using Assimp's standard hashing function.
if (shortened) {
Read<unsigned int>(stream);
}
else // else write as usual
{
// if there are less than 2^16 vertices, we can simply use 16 bit integers ...
mesh->mFaces = new aiFace[mesh->mNumFaces];
for (unsigned int i = 0; i < mesh->mNumFaces;++i) {
aiFace& f = mesh->mFaces[i];
BOOST_STATIC_ASSERT(AI_MAX_FACE_INDICES <= 0xffff);
f.mNumIndices = Read<uint16_t>(stream);
f.mIndices = new unsigned int[f.mNumIndices];
for (unsigned int a = 0; a < f.mNumIndices;++a) {
if (mesh->mNumVertices < (1u<<16))
{
f.mIndices[a] = Read<uint16_t>(stream);
}
else
{
f.mIndices[a] = Read<unsigned int>(stream);
}
}
}
}
// write bones
if (mesh->mNumBones) {
mesh->mBones = new C_STRUCT aiBone*[mesh->mNumBones];
for (unsigned int a = 0; a < mesh->mNumBones;++a) {
mesh->mBones[a] = new aiBone();
ReadBinaryBone(stream,mesh->mBones[a]);
}
}
}
void AssbinImporter::ReadBinaryScene( IOStream * stream, aiScene* scene )
{
ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AISCENE);
@ -162,13 +315,17 @@ void AssbinImporter::ReadBinaryScene( IOStream * stream, aiScene* scene )
scene->mRootNode = new aiNode[1];
ReadBinaryNode( stream, &scene->mRootNode );
/*
// Read all meshes
for (unsigned int i = 0; i < scene->mNumMeshes;++i) {
const aiMesh* mesh = scene->mMeshes[i];
ReadBinaryMesh( stream,mesh);
}
if (scene->mNumMeshes)
{
scene->mMeshes = new aiMesh*[scene->mNumMeshes];
for (unsigned int i = 0; i < scene->mNumMeshes;++i) {
scene->mMeshes[i] = new aiMesh();
ReadBinaryMesh( stream,scene->mMeshes[i]);
}
}
/*
// Read materials
for (unsigned int i = 0; i< scene->mNumMaterials; ++i) {
const aiMaterial* mat = scene->mMaterials[i];

2
code/AssbinLoader.h
View File

@ -76,6 +76,8 @@ public:
);
void ReadBinaryScene( IOStream * stream, aiScene* pScene );
void ReadBinaryNode( IOStream * stream, aiNode** mRootNode );
void ReadBinaryMesh( IOStream * stream, aiMesh* mesh );
void ReadBinaryBone( IOStream * stream, aiBone* bone );
};
} // end of namespace Assimp