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fix fbx mesh export #285

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merged 1 commit into from
Feb 5, 2024
Merged

fix fbx mesh export #285

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20 changes: 18 additions & 2 deletions examples/Prototype/ProgressiveMesh/GenericToPMToFbx/Main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,16 @@ int main(int argc, char** argv)
}

// Processing
std::map<cd::MeshID, cd::NodeID> mapMeshToNodeId;
for (uint32_t nodeIndex = 0U; nodeIndex < pSceneDatabase->GetNodeCount(); ++nodeIndex)
{
const auto& node = pSceneDatabase->GetNode(nodeIndex);
for (uint32_t meshIndex = 0U; meshIndex < node.GetMeshIDCount(); ++meshIndex)
{
mapMeshToNodeId[node.GetMeshID(meshIndex)] = nodeIndex;
}
}

uint32_t meshCount = pSceneDatabase->GetMeshCount();
for (uint32_t meshIndex = 0U; meshIndex < meshCount; ++meshIndex)
{
Expand Down Expand Up @@ -71,9 +81,15 @@ int main(int argc, char** argv)
pm.InitBoundary(intersection);
}

auto lodMesh = pm.GenerateLodMesh(0.1f, 2000, &mesh);
auto lodMesh = pm.GenerateLodMesh(0.5f, 3000, &mesh);
lodMesh.SetName(std::format("{}_reduced", mesh.GetName()).c_str());
lodMesh.SetID(pSceneDatabase->GetMeshCount());
cd::MeshID lodMeshID(pSceneDatabase->GetMeshCount());
lodMesh.SetID(lodMeshID);
lodMesh.AddMaterialID(cd::MaterialID::InvalidID);

cd::NodeID nodeID = mapMeshToNodeId[mesh.GetID()];
pSceneDatabase->GetNode(nodeID.Data()).AddMeshID(lodMeshID);

pSceneDatabase->AddMesh(cd::MoveTemp(lodMesh));
}

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47 changes: 22 additions & 25 deletions private/Consumers/FbxConsumer/FbxConsumerImpl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -290,36 +290,33 @@ void FbxConsumerImpl::ExportMesh(fbxsdk::FbxScene* pScene, fbxsdk::FbxNode* pNod
}
}

if (mappingSurfaceAttributes)
// If using vertex instance, then init vertex index to attribute index.
for (const auto& polygonGroup : mesh.GetPolygonGroups())
{
// If using vertex instance, then init vertex index to attribute index.
for (const auto& polygonGroup : mesh.GetPolygonGroups())
for (const auto& polygon : polygonGroup)
{
for (const auto& polygon : polygonGroup)
for (cd::VertexID instanceID : polygon)
{
for (cd::VertexID instanceID : polygon)
{
cd::VertexID vertexID = mesh.GetVertexInstanceToID(instanceID.Data());
cd::VertexID vertexID = mappingSurfaceAttributes ? mesh.GetVertexInstanceToID(instanceID.Data()) : instanceID;

if (pNormalElement)
{
pNormalElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}
if (pNormalElement)
{
pNormalElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}

if (pBinormalElement)
{
pBinormalElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}

if (pTangentElement)
{
pTangentElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}

if (pAlbedoUVElement)
{
pAlbedoUVElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}
if (pBinormalElement)
{
pBinormalElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}

if (pTangentElement)
{
pTangentElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}

if (pAlbedoUVElement)
{
pAlbedoUVElement->GetIndexArray().SetAt(vertexID.Data(), instanceID.Data());
}
}
}
Expand Down
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