//----------------------------------------------------------------------------
SceneBuilder::SceneBuilder (const TCHAR *filename, BOOL exportSelected,
ExportSettings *settings, ExpInterface *ept,
Interface *max, INode *exportNode)
{
float time = (float)PX2::Time::GetTimeInSeconds();
const size_t size = _tcslen(filename)+1;
mFileName = new1<TCHAR>((int)size);
_tcscpy_s(mFileName, size, filename);
mExportSelected = exportSelected;
mSettings = settings;
mExport = ept;
mMax = max;
mExportMaxNode = exportNode;
mTicksPerFrame = GetTicksPerFrame();
if (mSettings->IncludeCurrentFrame)
{
mTimeStart = mMax->GetAnimRange().Start();
mTimeEnd = mTimeStart;
}
else
{
mTimeStart = mSettings->StartFrame * GetTicksPerFrame();
mTimeEnd = mSettings->EndFrame * GetTicksPerFrame();
if (mSettings->UseLocalTime)
{
mTimeOffset = mTimeStart;
}
else
{
mTimeOffset = 0;
}
}
// 遍历场景3次。第1次处理materials，第2次遍历节点继承关系，第3次应用 modifiers
mScene = new0 PX2::Node();
mScene->SetName("RootNode");
// 1
CollectMaterials(mExportMaxNode);
ConvertMaterials();
// 2
if (!mExportSelected)
{
// entire scene
if (mSettings->IncludeLights)
{
BuildAmbientLight();
}
int numChildren = mExportMaxNode->NumberOfChildren();
for (int i=0; i<numChildren; i++)
{
Traverse(mExportMaxNode->GetChildNode(i), mScene);
}
}
else
{
// selection only
Traverse(mExportMaxNode, mScene);
}
mScene->Update(0.0f);
// 3
if (mSettings->IncludeModifiers)
{
ApplyModifiers();
}
PX2::OutStream stream;
if (mExportSelected)
{
stream.Insert(mScene->GetChild(0));
}
else
{
stream.Insert(mScene);
}
stream.Save(filename);
mScene = 0;
}
BOOL CMeshConverter::Convert(CGraphicsObject** ppcGraphicsObject, CMeshObject** ppcMeshObject, CMesh* pcMesh, CArrayIntAndPointer* pcConnectionAndIndex)
{
//This assumes mpcMesh is already touched
mpcMesh = pcMesh;
mpcConnectionsAndIndices = pcConnectionAndIndex;
mpcGraphicsObject = NULL;
mpcMeshObject = NULL;
if (mpcSceneConverter->GetMapper()->GetMesh(pcMesh->GetOI(), ppcGraphicsObject, ppcMeshObject))
{
return TRUE;
}
//Get the Position array, also make sure it has one.
if (pcMesh->TestNumPositions() == 0)
{
CChars sz;
sz.Init("The Mesh [");
sz.Append(pcMesh->GetName());
sz.Append("] has no vertex position channel");
gcUserError.Set(sz.Text());
sz.Kill();
return FALSE;
}
maiMatrixIndices.Init(256);
//Create the graphics object for the conversion destination.
mpcGraphicsObject = mpcSceneConverter->GetWorld()->CreateGraphicsObject(FALSE);
mpcMeshObject = mpcSceneConverter->GetWorld()->CreateMeshObject();
FillUniqueMatricies();
if (!ConvertMaterials())
{
return FALSE;
}
if (!ConvertMesh())
{
return FALSE;
}
if (!CreateLinkNodes())
{
return FALSE;
}
if (!SetObjectMatricies())
{
return FALSE;
}
maiMatrixIndices.Kill();
//Optimise the vertex and index buffers in the graphics object according to current hardware.
OptimiseGraphicsObject();
mpcSceneConverter->GetMapper()->AddGraphicsObject(pcMesh->GetOI(), mpcGraphicsObject, mpcMeshObject);
SafeAssign(ppcGraphicsObject, mpcGraphicsObject);
SafeAssign(ppcMeshObject, mpcMeshObject);
return TRUE;
}
