void optimizePostTLTipsify(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count, unsigned int cache_size, std::vector<unsigned int>* clusters)
{
tipsify(destination, indices, index_count, vertex_count, cache_size, clusters);
}
json WebMesh::processOneShape(tinyobj::shape_t currShape,
vector<int>& vertices_to_write,
vector<int>& indices_to_write) {
vector<Vertex*> origVertices;
vector<int> origIndices;
int needReconstructNormals = readShapeMesh(currShape.mesh, origVertices, origIndices);
//STEP 2 (optional): reorder indices,
vector<int> reorder_indices;
if (m_triOrdering == TriangleReordering::TIPSIFY) {
int* tip = (int*)tipsify(&origIndices[0], origIndices.size()/3, origVertices.size(), 120);
reorder_indices.assign(tip, tip+origIndices.size());
}
else if (m_triOrdering == TriangleReordering::FORSYTH) {
int *forth = (int *) reorderForsyth(&origIndices[0], origIndices.size() / 3, origVertices.size());
reorder_indices.assign(forth, forth + origIndices.size());
}
else
reorder_indices = origIndices;
//get AABB
AABB* aabb = Geo::getAABB(origVertices);
//STEP 4: Quantize vertices - option to encode per axis or straight
vector<Vertex*> quantizedVertices;
vector<int> out_m_bV;
generateQuantizedVertices(origVertices, aabb, m_bV, m_bN, m_bT,
quantizedVertices, m_vertexQuantization,
out_m_bV, m_fibLevels);
//STEP 4a: Remove duplicate verts and triangles from quantization process
vector<Vertex*> dupVerts;
vector<int> dupInds;
removeDuplicateVertices(quantizedVertices,
dupVerts,
reorder_indices,
dupInds);
//STEP 5: Reindex mesh for index compression
map<Vertex, int> vertex_int_map;
vector<Vertex*> FINAL_VERTICES;
vector<int> reIndexed_inds;
cout << "Reindexing..." << endl;
//reIndexAccordingToIndices(quantizedVertices, reorder_indices, vertex_int_map, FINAL_VERTICES, reIndexed_inds);
reIndexAccordingToIndices(dupVerts, dupInds, vertex_int_map, FINAL_VERTICES, reIndexed_inds);
//we store the final number of faces here, before we compress index buffer
int finalNumFaces = dupInds.size()/3;
//STEP 6 (optional): COMPRESS INDICES
vector<int> FINAL_INDICES;
int max_step = 1;
if (m_indCompression == IndexCompression::PAIRED_TRIS) {
cout << "Compressing indices..." << endl;
Geo::compressIndexBuffer(reIndexed_inds, FINAL_INDICES);
max_step = 3;
}
else
FINAL_INDICES = reIndexed_inds;
//STEP 6: Encode everythings, either delta or HWM
cout << "Encoding..." << endl;
deltaEncodeVertices(FINAL_VERTICES, vertices_to_write, m_bT, m_normalEncoding);
int fourByters = 0;
if (m_indCoding == IndexCoding::DELTA){
fourByters = encodeIndicesDelta(FINAL_INDICES, indices_to_write);
}
else {
if (m_meshEncoding == MeshEncoding::UTF)
fourByters = encodeIndicesHighWater(FINAL_INDICES, indices_to_write, max_step, true); //true says its UTF safe
else
encodeIndicesHighWater(FINAL_INDICES, indices_to_write, max_step, false); //true says its UTF safe
}
//write metadata
json metadata = writeHeader(vertices_to_write,
indices_to_write,
aabb,
int(FINAL_VERTICES.size()),
finalNumFaces,
fourByters,
max_step,
currShape.mesh.material_ids[0],
currShape.name.c_str(),
needReconstructNormals,
out_m_bV[0], out_m_bV[1], out_m_bV[2]);
return metadata;
}
cGeometry *cManagerObjectLoader::loadDaeGeometry(const eiString& srcFile) {
if(!cFileParser::isFileExists(srcFile)) {
ManagerReporter.print("Can't load Dae Geometry: " + srcFile);
return NULL;
}
Assimp::Importer importer;
// read up dae scene
char ansiSrcFile[EIString_STACK_SIZE];
srcFile.toAnsiChar(ansiSrcFile, EIString_STACK_SIZE);
const const aiScene* scene = importer.ReadFile(ansiSrcFile,(aiProcessPreset_TargetRealtime_Quality | aiProcess_MakeLeftHanded | aiProcess_FlipWindingOrder)^aiProcess_FindInvalidData);
if(scene == NULL)
return 0;
int nVertex = 0;
int nIndex = 0;
int nMeshes = scene->mNumMeshes;
aiMesh** meshes = scene->mMeshes;
for(uint32 i = 0; i < nMeshes; i++) {
aiMesh *mesh = meshes[i];
nVertex += mesh->mNumVertices;
nIndex += mesh->mNumFaces * 3;
}
// read up vertex + index
//tVertexLayouts::tVertexNro::vertex* vertices = new tVertexLayouts::tVertexNro::vertex[nVertex];
eiFloat3 *verticesPos = new eiFloat3[nVertex];
uint32 *indices = new uint32[nIndex];
int indexI = 0;
int vertexI = 0;
int vertexOffset = 0;
for(uint32 i = 0; i < nMeshes;i++) {
aiMesh* mesh = meshes[i];
aiVector3D* currVertices = mesh->mVertices;
//aiVector3D* currNormals = mesh->mNormals;
//aiVector3D* currTangents = mesh->mTangents;
//aiVector3D* currTxcoords = mesh->mTextureCoords[0]; // @TODO not general algorithm, wee need to handle more UV channels
// read indices
aiFace* faces = mesh->mFaces;
int nFaces = mesh->mNumFaces;
for(uint32 j = 0; j < nFaces; indexI += 3, j++) {
aiFace& face = faces[j];
indices[indexI] = face.mIndices[0] + vertexI; // each mesh start indexing from 0 in .dae r
indices[indexI + 1] = face.mIndices[1] + vertexI;
indices[indexI + 2] = face.mIndices[2] + vertexI;
}
// read vertex transforms
aiNode *root = scene->mRootNode;
bool meshHaveBakedTrans = true;
if(strcmp(root->mName.C_Str(),"RootNode") == 0)
meshHaveBakedTrans = false;
aiVector3D scaling(1.0f, 1.0f, 1.0f);
aiQuaternion rotation(1.0f, 0.0f, 0.0f, 0.0f);
aiVector3D position(0.0f, 0.0f, 0.0f);
if(!meshHaveBakedTrans) {
aiMatrix4x4 meshTrans;
aiNode *meshTransNode = scene->mRootNode->mChildren[i];
if(scene->mRootNode->mNumChildren > i) {
meshTrans *= meshTransNode->mTransformation;
if(meshTransNode->mNumChildren > 0)
meshTrans *= meshTransNode->mChildren[0]->mTransformation;
}
meshTrans.Decompose(scaling, rotation, position);
position.y *= -1;
//position.z *= -1;
eiSwap(position.y, position.z);
} else {
//-
aiNode *rootNode = scene->mRootNode;
aiNode *meshTransNode = (scene->mRootNode->mNumChildren > 1) ? rootNode->mChildren[1] : rootNode->mChildren[0];
aiMatrix4x4 meshTrans = meshTransNode->mTransformation;
if(meshTransNode->mNumChildren >0) {
meshTrans *= meshTransNode->mChildren[0]->mTransformation;
if(meshTransNode->mChildren[0]->mNumChildren > 0)
meshTrans *= meshTransNode->mChildren[0]->mChildren[0]->mTransformation;
}
meshTrans.Decompose(scaling, rotation, position);
}
// process transform for vertices, normals, tangents, read them
for(uint32 j = 0; j < mesh->mNumVertices; vertexI++, j++) {
aiVector3D pos = rotation.Rotate(currVertices[j] + position).SymMul(scaling);
/*aiVector3D norm = rotation.Rotate(currNormals[j]);
aiVector3D tangent = rotation.Rotate(currTangents[j]);
aiVector3D txcoord = currTxcoords[j];*/
if(meshHaveBakedTrans) {
eiSwap(pos.y, pos.z);
// x, z, y stupid assimp
}
if(!meshHaveBakedTrans) {
pos.y *= -1; // I really don't know why need that
}
verticesPos[vertexI] = eiFloat3(pos.x, pos.y, pos.z);
//if(bakedRotation) {
//verticesPos[vertexI] = eiFloat3(pos.x, pos.z, pos.y);
//} else {
//verticesPos[vertexI] = eiFloat3(pos.x, -pos.y, pos.z);
//}
/*verticesPos[vertexI] = eiFloat3(currVertices[j].x, currVertices[j].y, currVertices[j].z);
vertices[vertexI].normalL = XMFLOAT3(norm.x, -norm.z, norm.y);
vertices[vertexI].tangentL = XMFLOAT3(tangent.x, -tangent.z, tangent.y);
vertices[vertexI].tex0 = XMFLOAT2(txcoord.x, txcoord.y);*/
}
}
// drop non unique vertices
eiFloat3* uniqueVertices = new eiFloat3[nVertex];
int nUniqVertices = 0;
for(uint32 i = 0; i < nVertex; i++) {
eiFloat3& v = verticesPos[i];
bool uniq = true;
int uniqIndex = -1;
// check vertex uniquness
for(uint32 j = 0; j < nUniqVertices; j++) {
if(uniqueVertices[j] == v) {
uniq = false;
uniqIndex = j;
break;
}
}
int currIndex = nUniqVertices;
if(uniq) {
uniqueVertices[nUniqVertices] = v;
nUniqVertices++;
} else {
currIndex = uniqIndex;
}
for(uint32 k = 0; k <nIndex; k++)
if(indices[k] == i)
indices[k] = currIndex;
}
// Finally Index reordering for optimal post vertex cache
uint32* reorderedIndices = new uint32[nIndex];
reorderedIndices = tipsify(indices,nIndex/3,nVertex,16);
delete[] indices;
eiDebugPrint(_T("ObjectLoader:: SuccessFully loaded object: ") + srcFile);
return new cGeometry(uniqueVertices, reorderedIndices, nUniqVertices, nIndex);
//return new cGeometry(verticesPos, indices, nVertex, nIndex); UNOPTIMIZED
}
