BOOL MeshExpUtility::BuildObject(CEditableObject*& exp_obj, LPCSTR m_ExportName)
{
bool bResult = true;
if (m_ExportName[0]==0) return false;
ELog.Msg(mtInformation,"Building object..." );
char fname[256]; _splitpath( m_ExportName, 0, 0, fname, 0 );
exp_obj = xr_new<CEditableObject>(fname);
exp_obj->SetVersionToCurrent(TRUE,TRUE);
ExportItemIt it = m_Items.begin();
for(;it!=m_Items.end();it++){
CEditableMesh *submesh = xr_new<CEditableMesh>(exp_obj);
ELog.Msg(mtInformation,"Converting node '%s'...", it->pNode->GetName());
if( submesh->Convert(it->pNode) ){
// transform
Matrix3 mMatrix;
mMatrix = it->pNode->GetNodeTM(0)*Inverse(it->pNode->GetParentNode()->GetNodeTM(0));
Point3 r1 = mMatrix.GetRow(0);
Point3 r2 = mMatrix.GetRow(1);
Point3 r3 = mMatrix.GetRow(2);
Point3 r4 = mMatrix.GetRow(3);
Fmatrix m; m.identity();
m.i.set(r1.x, r1.z, r1.y);
m.j.set(r2.x, r2.z, r2.y);
m.k.set(r3.x, r3.z, r3.y);
m.c.set(r4.x, r4.z, r4.y);
submesh->Transform( m );
// flip faces
Fvector v; v.crossproduct(m.j, m.k);
if(v.dotproduct(m.i)<0.f) submesh->FlipFaces();
if(m_ObjectFlipFaces) submesh->FlipFaces();
submesh->RecomputeBBox();
// append mesh
submesh->SetName (it->pNode->GetName());
exp_obj->m_Meshes.push_back (submesh);
}else{
ELog.Msg(mtError,"! can't convert", it->pNode->GetName());
xr_delete(submesh);
bResult = false;
break;
}
}
if (bResult){
exp_obj->UpdateBox ();
exp_obj->VerifyMeshNames();
ELog.Msg (mtInformation,"Object '%s' contains: %d points, %d faces",
exp_obj->GetName(), exp_obj->GetVertexCount(), exp_obj->GetFaceCount());
}else{
xr_delete(exp_obj);
}
//-------------------------------------------------------------------
return bResult;
}
MStatus CXRayObjectExport::ExportPart(CEditableObject* O, MDagPath& mdagPath, MObject& mComponent)
{
MStatus stat = MS::kSuccess;
MSpace::Space space = MSpace::kWorld;
MFnMesh fnMesh( mdagPath, &stat );
if ( MS::kSuccess != stat) {
fprintf(stderr,"Failure in MFnMesh initialization.\n");
return MS::kFailure;
}
MString mdagPathNodeName = fnMesh.name();
MFnDagNode dagNode1(mdagPath);
u32 pc = dagNode1.parentCount();
for(u32 ip=0;ip<pc;++ip)
{
MObject object_parent = dagNode1.parent(ip, &stat);
if(object_parent.hasFn(MFn::kTransform))
{
MFnTransform parent_transform(object_parent,&stat);
if ( MS::kSuccess == stat)
{
mdagPathNodeName = parent_transform.name();
break;
}
}
}
MItMeshPolygon meshPoly( mdagPath, mComponent, &stat );
if ( MS::kSuccess != stat) {
fprintf(stderr,"Failure in MItMeshPolygon initialization.\n");
return MS::kFailure;
}
MItMeshVertex vtxIter( mdagPath, mComponent, &stat );
if ( MS::kSuccess != stat) {
fprintf(stderr,"Failure in MItMeshVertex initialization.\n");
return MS::kFailure;
}
// If the shape is instanced then we need to determine which
// instance this path refers to.
//
int instanceNum = 0;
if (mdagPath.isInstanced())
instanceNum = mdagPath.instanceNumber();
// Get a list of all shaders attached to this mesh
MObjectArray rgShaders;
MIntArray texMap;
MStatus status;
status = fnMesh.getConnectedShaders (instanceNum, rgShaders, texMap);
if (status == MStatus::kFailure)
{
Log("! Unable to load shaders for mesh");
return (MStatus::kFailure);
}
XRShaderDataVec xr_data;
{
for ( int i=0; i<(int)rgShaders.length(); i++ ) {
MObject shader = rgShaders[i];
xr_data.push_back(SXRShaderData());
SXRShaderData& D = xr_data.back();
status = parseShader(shader, D);
if (status == MStatus::kFailure) {
status.perror ("Unable to retrieve filename of texture");
continue;
}
}
}
CEditableMesh* MESH = new CEditableMesh(O);
MESH->SetName(mdagPathNodeName.asChar());
O->AppendMesh(MESH);
int objectIdx, length;
// Find i such that objectGroupsTablePtr[i] corresponds to the
// object node pointed to by mdagPath
length = objectNodeNamesArray.length();
{
for( int i=0; i<length; i++ ) {
if( objectNodeNamesArray[i] == mdagPathNodeName ) {
objectIdx = i;
break;
}
}
}
// Reserve uv table
{
VMapVec& _vmaps = MESH->m_VMaps;
_vmaps.resize (1);
st_VMap*& VM = _vmaps.back();
VM = new st_VMap("Texture",vmtUV,false);
}
// write faces
{
using FaceVec = xr_vector<st_Face>;
using FaceIt = FaceVec::iterator;
VMapVec& _vmaps = MESH->m_VMaps;
SurfFaces& _surf_faces = MESH->m_SurfFaces;
VMRefsVec& _vmrefs = MESH->m_VMRefs;
// temp variables
FvectorVec _points;
FaceVec _faces;
U32Vec _sgs;
int f_cnt = fnMesh.numPolygons();
_sgs.reserve (f_cnt);
_faces.reserve (f_cnt);
_vmrefs.reserve (f_cnt*3);
// int lastSmoothingGroup = INITIALIZE_SMOOTHING;
MPointArray rgpt;
MIntArray rgint;
PtLookupMap ptMap;
CSurface* surf = 0;
for ( ; !meshPoly.isDone(); meshPoly.next()){
// Write out the smoothing group that this polygon belongs to
// We only write out the smoothing group if it is different
// from the last polygon.
//
int compIdx = meshPoly.index();
int smoothingGroup = polySmoothingGroups[ compIdx ];
// for each polygon, first setup the reverse mapping
// between object-relative vertex indices and face-relative
// vertex indices
ptMap.clear();
for (int i=0; i<(int)meshPoly.polygonVertexCount(); i++)
ptMap.insert (PtLookupMap::value_type(meshPoly.vertexIndex(i), i) );
// verify polygon zero area
if (meshPoly.zeroArea()){
status = MS::kFailure;
Log("! polygon have zero area:",meshPoly.index());
return status;
}
// verify polygon zero UV area
/* if (meshPoly.zeroUVArea()){
status = MS::kFailure;
Log("! polygon have zero UV area:",meshPoly.index());
return status;
}
*/
// verify polygon has UV information
if (!meshPoly.hasUVs (&status)) {
status = MS::kFailure;
Log("! polygon is missing UV information:",meshPoly.index());
return status;
}
int cTri;
// now iterate through each triangle on this polygon and create a triangle object in our list
status = meshPoly.numTriangles (cTri);
if (!status) {
Log("! can't getting triangle count");
return status;
}
for (int i=0; i < cTri; i++) {
// for each triangle, first get the triangle data
rgpt.clear();//triangle vertices
rgint.clear();//triangle vertex indices
// triangles that come from object are retrieved in world space
status = meshPoly.getTriangle (i, rgpt, rgint, MSpace::kWorld);
if (!status) {
Log("! can't getting triangle for mesh poly");
return status;
}
if ((rgpt.length() != 3) || (rgint.length() != 3)) {
Msg("! 3 points not returned for triangle");
return MS::kFailure;
}
// Write out vertex/uv index information
//
R_ASSERT2(fnMesh.numUVs()>0,"Can't find uvmaps.");
_faces.push_back(st_Face());
_sgs.push_back(smoothingGroup);
//set_smooth
set_smoth_flags( _sgs.back(), rgint );
st_Face& f_it = _faces.back();
for ( int vtx=0; vtx<3; vtx++ ) {
// get face-relative vertex
PtLookupMap::iterator mapIt;
int vtLocal, vtUV;
int vt = rgint[vtx];
mapIt = ptMap.find(vt);
Fvector2 uv;
if (mapIt == ptMap.end()){
Msg("! Can't find local index.");
return MS::kFailure;
}
vtLocal = (*mapIt).second;
status = meshPoly.getUVIndex (vtLocal, vtUV, uv.x, uv.y);
if (!status) {
Msg("! error getting UV Index for local vertex '%d' and object vertex '%d'",vtLocal,vt);
return status;
}
// flip v-part
uv.y=1.f-uv.y;
f_it.pv[2-vtx].pindex = AppendVertex(_points,rgpt[vtx]);
f_it.pv[2-vtx].vmref = _vmrefs.size();
_vmrefs.push_back (st_VMapPtLst());
st_VMapPtLst& vm_lst = _vmrefs.back();
vm_lst.count = 1;
vm_lst.pts = xr_alloc<st_VMapPt>(vm_lst.count);
vm_lst.pts[0].vmap_index= 0;
vm_lst.pts[0].index = AppendUV(_vmaps.back(),uv);
}
// out face material
int iTexture = texMap[meshPoly.index()];
if (iTexture<0)
xrDebug::Fatal(DEBUG_INFO,"Can't find material for polygon: %d",meshPoly.index());
SXRShaderData& D= xr_data[iTexture];
int compIdx = meshPoly.index();
surf = MESH->Parent()->CreateSurface(getMaterialName(mdagPath, compIdx, objectIdx),D);
if (!surf) return MStatus::kFailure;
_surf_faces[surf].push_back(_faces.size()-1);
}
}
{
// copy from temp
MESH->m_VertCount = _points.size();
MESH->m_FaceCount = _faces.size();
MESH->m_Vertices = xr_alloc<Fvector>(MESH->m_VertCount);
Memory.mem_copy (MESH->m_Vertices,&*_points.begin(),MESH->m_VertCount*sizeof(Fvector));
MESH->m_Faces = xr_alloc<st_Face>(MESH->m_FaceCount);
Memory.mem_copy (MESH->m_Faces,&*_faces.begin(),MESH->m_FaceCount*sizeof(st_Face));
MESH->m_SmoothGroups = xr_alloc<u32>(MESH->m_FaceCount);
Memory.mem_copy (MESH->m_SmoothGroups,&*_sgs.begin(),MESH->m_FaceCount*sizeof(u32));
MESH->RecomputeBBox ();
}
if ((MESH->GetVertexCount()<4)||(MESH->GetFaceCount()<2))
{
Log ("! Invalid mesh: '%s'. Faces<2 or Verts<4",*MESH->Name());
return MS::kFailure;
}
}
return stat;
}