bool Exporter::makeSkin(NiTriBasedGeomRef shape, INode *node, FaceGroup &grp, TimeValue t)
{
if (!mExportSkin)
return false;
if (grp.verts.empty())
return false;
//get the skin modifier
Modifier *mod = GetSkin(node);
if (!mod)
return false;
ISkin *skin = (ISkin *) mod->GetInterface(I_SKIN);
if (!skin)
return false;
ISkinContextData *skinData = skin->GetContextInterface(node);
if (!skinData)
return false;
if (grp.strips.empty())
strippify(grp);
// Create new call back to finish export
SkinInstance* si = new SkinInstance(this);
mPostExportCallbacks.push_back(si);
skin->GetSkinInitTM(node, si->bone_init_tm, false);
skin->GetSkinInitTM(node, si->node_init_tm, true);
si->shape = shape;
// Get bone references (may not actually exist in proper structure at this time)
int totalBones = skin->GetNumBones();
si->boneWeights.resize(totalBones);
si->boneList.resize(totalBones);
for (int i=0; i<totalBones; ++i) {
si->boneList[i] = getNode(skin->GetBone(i));
}
vector<int>& vidx = grp.vidx;
int nv = vidx.size();
for (int i=0; i<nv; ++i)
{
int vi = vidx[i];
int nbones = skinData->GetNumAssignedBones(vi);
for (int j=0; j<nbones; ++j)
{
SkinWeight sw;
sw.index = i;
sw.weight = skinData->GetBoneWeight(vi,j);
int boneIndex = skinData->GetAssignedBone(vi,j);
SkinInstance::SkinWeightList& weights = si->boneWeights[boneIndex];
weights.push_back(sw);
}
}
// remove unused bones
vector<NiNodeRef>::iterator bitr = si->boneList.begin();
SkinInstance::BoneWeightList::iterator switr = si->boneWeights.begin();
for (int i=0; i<totalBones; ++i) {
vector<SkinWeight> &weights = (*switr);
if (weights.empty())
{
bitr = si->boneList.erase(bitr);
switr = si->boneWeights.erase(switr);
}
else
{
++bitr, ++switr;
}
}
// Check for dismemberment
if (IsFallout3() || IsSkyrim()) {
Modifier *dismemberSkinMod = GetBSDismemberSkin(node);
if (dismemberSkinMod)
{
if (IBSDismemberSkinModifier *disSkin = (IBSDismemberSkinModifier *) dismemberSkinMod->GetInterface(I_BSDISMEMBERSKINMODIFIER)){
Tab<IBSDismemberSkinModifierData*> modData = disSkin->GetModifierData();
if (modData.Count() >= 1) {
IBSDismemberSkinModifierData* bsdsmd = modData[0];
si->SkinInstConstructor = BSDismemberSkinInstance::Create;
Tab<BSDSPartitionData> &flags = bsdsmd->GetPartitionFlags();
GenericNamedSelSetList &fselSet = bsdsmd->GetFaceSelList();
FaceMap fmap;
NiTriBasedGeomDataRef data = DynamicCast<NiTriBasedGeomData>(shape->GetData());
vector<Triangle> tris = data->GetTriangles();
for (int i=0; i<tris.size(); ++i) {
Triangle tri = tris[i];
fmap[ rotate(tri) ] = i;
}
// Build up list of partitions and face to partition map
si->partitions.resize(flags.Count());
si->facePartList.resize( grp.faces.size(), -1 );
for (int i=0; i<flags.Count(); ++i) {
BodyPartList& bp = si->partitions[i];
bp.bodyPart = (BSDismemberBodyPartType)flags[i].bodyPart;
bp.partFlag = (BSPartFlag)(flags[i].partFlag | PF_START_NET_BONESET);
BitArray& fSelect = fselSet[i];
for (int j=0; j<fSelect.GetSize(); ++j){
if ( fSelect[j] ) {
Triangle tri = grp.faces[grp.fidx[j]];
FaceMap::iterator fitr = fmap.find( rotate(tri) );
if (fitr != fmap.end())
si->facePartList[ (*fitr).second ] = i;
}
}
}
}
}
}
}
return true;
}
bool NifImporter::ImportSkin(ImpNode *node, NiTriBasedGeomRef triGeom, int v_start/*=0*/)
{
bool ok = true;
NiSkinInstanceRef nifSkin = triGeom->GetSkinInstance();
if (!nifSkin)
return false;
INode *tnode = node->GetINode();
NiSkinDataRef data = nifSkin->GetSkinData();
NiSkinPartitionRef part = nifSkin->GetSkinPartition();
vector<NiNodeRef> nifBones = nifSkin->GetBones();
//create a skin modifier and add it
Modifier *skinMod = GetOrCreateSkin(tnode);
TriObject *triObject = GetTriObject(tnode->GetObjectRef());
Mesh& m = triObject->GetMesh();
//get the skin interface
if (ISkin *skin = (ISkin *) skinMod->GetInterface(I_SKIN)){
ISkinImportData* iskinImport = (ISkinImportData*) skinMod->GetInterface(I_SKINIMPORTDATA);
// Set the num weights to 4. Yes its in the nif but Shon doesn't like to expose those values
// and the value always seems to be 4 anyway. I'd also this be more dynamic than hard coded numbers
// but I cant figure out the correct values to pass the scripting engine from here so I'm giving up.
int numWeightsPerVertex = 4;
#if VERSION_3DSMAX >= ((5000<<16)+(15<<8)+0) // Version 5+
IParamBlock2 *params = skinMod->GetParamBlockByID(2/*advanced*/);
params->SetValue(0x7/*bone_Limit*/, 0, numWeightsPerVertex);
#endif
// Can get some truly bizarre animations without this in MAX with Civ4 Leaderheads
#if VERSION_3DSMAX > ((5000<<16)+(15<<8)+0) // Version 6+
BOOL ignore = TRUE;
params->SetValue(0xE/*ignoreBoneScale*/, 0, ignore);
#endif
//RefTargetHandle advanced = skinMod->GetReference(3);
//setMAXScriptValue(advanced, "bone_Limit", 0, numWeightsPerVertex);
Matrix3 geom = TOMATRIX3(triGeom->GetLocalTransform());
Matrix3 m3 = TOMATRIX3(data->GetOverallTransform());
Matrix3 im3 = Inverse(m3);
Matrix3 nm3 = im3 * geom;
iskinImport->SetSkinTm(tnode, nm3, nm3); // ???
// Create Bone List
Tab<INode*> bones;
for (size_t i=0; i<nifBones.size(); ++i){
NiNodeRef bone = nifBones[i];
if (INode *boneRef = FindNode(bone)) {
bones.Append(1, &boneRef);
iskinImport->AddBoneEx(boneRef, TRUE);
//// Set Bone Transform
Matrix3 b3 = TOMATRIX3(data->GetBoneTransform(i));
Matrix3 ib3 = Inverse(b3);
ib3 *= geom;
iskinImport->SetBoneTm(boneRef, ib3, ib3);
}
}
if (bones.Count() != data->GetBoneCount())
return false;
ObjectState os = tnode->EvalWorldState(0);
// Need to get a list of bones and weights for each vertex.
vector<VertexHolder> vertexHolders;
vertexHolders.resize(m.numVerts);
for (int i=0, n=data->GetBoneCount();i<n; ++i){
if (INode *boneRef = bones[i]){
vector<SkinWeight> weights = data->GetBoneWeights(i);
for (vector<SkinWeight>::iterator itr=weights.begin(), end=weights.end(); itr != end; ++itr){
VertexHolder& h = vertexHolders[itr->index];
h.vertIndex = itr->index;
++h.count;
h.weights.Append(1, &itr->weight);
h.boneNodeList.Append(1, &boneRef);
}
}
}
tnode->EvalWorldState(0);
skinMod->DisableModInViews();
skinMod->EnableModInViews();
#if VERSION_3DSMAX < ((5000<<16)+(15<<8)+0) // Version 4
gi->SetCommandPanelTaskMode(TASK_MODE_MODIFY);
gi->SelectNode(tnode);
#endif
// Assign the weights
for (vector<VertexHolder>::iterator itr=vertexHolders.begin(), end=vertexHolders.end(); itr != end; ++itr){
VertexHolder& h = (*itr);
if (h.count){
float sum = 0.0f;
for (int i = 0; i < h.count; ++i)
sum += h.weights[i];
ASSERT(fabs(sum-1.0f) < 0.001f);
BOOL add = iskinImport->AddWeights(tnode, h.vertIndex, h.boneNodeList, h.weights);
add = add; // What was the purpose of this?
}
}
// This is a kludge to get skin transforms to update and avoid jumping around after modifying the transforms.
// Initially they show up incorrectly but magically fix up if you go to the modifier roll up.
// There is still an outstanding issue with skeleton and GetObjectTMBeforeWSM.
skinMod->DisableModInViews();
skinMod->EnableModInViews();
// If BSDismembermentSkinInstance, ...
if ( BSDismemberSkinInstanceRef bsdsi = DynamicCast<BSDismemberSkinInstance>(nifSkin) )
{
Modifier *dismemberSkinMod = GetOrCreateBSDismemberSkin(tnode);
if (IBSDismemberSkinModifier *disSkin = (IBSDismemberSkinModifier *) dismemberSkinMod->GetInterface(I_BSDISMEMBERSKINMODIFIER)){
// Evaluate node ensure the modifier data is created
// ObjectState os = tnode->EvalWorldState(0);
FaceMap faceMap;
int nfaces = m.getNumFaces();
for ( int i=0; i<nfaces; ++i ){
Face f = m.faces[i];
faceMap[ rotate(f) ] = i;
}
Tab<IBSDismemberSkinModifierData*> modData = disSkin->GetModifierData();
for (int i=0; i<modData.Count(); ++i) {
IBSDismemberSkinModifierData* bsdsmd = modData[i];
Tab<BSDSPartitionData> &flags = bsdsmd->GetPartitionFlags();
vector<BodyPartList> partitions = bsdsi->GetPartitions();
if (partitions.empty())
continue;
//bsdsmd->SetActivePartition( partitions.size() - 1 ); // Old Code
for (unsigned int j = 0; j < (partitions.size() - 1); ++j){
bsdsmd->AddPartition();
}
for (unsigned int j=0; j < partitions.size(); ++j ) {
flags[j].bodyPart = (DismemberBodyPartType)partitions[j].bodyPart;
flags[j].partFlag = partitions[j].partFlag;
}
for (int j=0; j < part->GetNumPartitions(); ++j) {
bsdsmd->SetActivePartition( j );
dismemberSkinMod->SelectAll(3); // ensures bitarrays are properly synced to mesh
dismemberSkinMod->ClearSelection(3);
vector<Triangle> triangles = part->GetTriangles(j);
vector<unsigned short> map = part->GetVertexMap(j);
GenericNamedSelSetList& fselSet = bsdsmd->GetFaceSelList();
if ( BitArray* fsel = fselSet.GetSetByIndex(j) )
{
for (vector<Triangle>::iterator itrtri = triangles.begin(); itrtri != triangles.end(); ++itrtri) {
Face f;
f.setVerts( map[(*itrtri).v1], map[(*itrtri).v2], map[(*itrtri).v3] );
FaceMap::iterator fitr = faceMap.find( rotate(f) );
if (fitr != faceMap.end())
fsel->Set((*fitr).second);
}
}
}
bsdsmd->SetActivePartition( 0 );
disSkin->LocalDataChanged();
}
}
}
}
return ok;
}