ColMesh* RBExport::GetColMesh( INode* node )
{
ObjectState os = node->EvalWorldState( m_CurTime );
Object* pObject = os.obj;
if (!pObject)
{
Warn( "Could not evaluate object state. Collision mesh %s was skipped.", node->GetName() );
return NULL;
}
Matrix3 nodeTM = node->GetNodeTM( m_CurTime );
Matrix3 nodeTMAfterWSM = node->GetObjTMAfterWSM( m_CurTime );
Matrix3 mOffs = nodeTMAfterWSM*Inverse( nodeTM );
// triangulate
TriObject* pTriObj = NULL;
if (pObject->CanConvertToType( Class_ID( TRIOBJ_CLASS_ID, 0 ) ))
{
pTriObj = (TriObject*)pObject->ConvertToType( m_CurTime, Class_ID( TRIOBJ_CLASS_ID, 0 ) );
}
bool bReleaseTriObj = (pTriObj != pObject);
if (!pTriObj)
{
Warn( "Could not triangulate mesh in node. Collision mesh %s was skipped.", node->GetName() );
return NULL;
}
// ensure, that vertex winding direction in polygon is CCW
Matrix3 objTM = node->GetObjTMAfterWSM( m_CurTime );
bool bNegScale = (DotProd( CrossProd( objTM.GetRow(0), objTM.GetRow(1) ), objTM.GetRow(2) ) >= 0.0);
int vx[3];
vx[0] = bNegScale ? 2 : 0;
vx[1] = bNegScale ? 1 : 1;
vx[2] = bNegScale ? 0 : 2;
Mesh& mesh = pTriObj->GetMesh();
// some cosmetics
mesh.RemoveDegenerateFaces();
mesh.RemoveIllegalFaces();
// create collision mesh
ColMesh* pMesh = new ColMesh();
int numPri = mesh.getNumFaces();
int numVert = mesh.numVerts;
// copy vertices
for (int i = 0; i < numVert; i++)
{
Point3 pt = mesh.verts[i];
pt = mOffs.PointTransform( pt );
pt = c_FlipTM.PointTransform( pt );
pMesh->AddVertex( Vec3( pt.x, pt.y, pt.z ) );
}
// loop on mesh faces
for (int i = 0; i < numPri; i++)
{
Face& face = mesh.faces[i];
pMesh->AddPoly( face.v[vx[0]], face.v[vx[1]], face.v[vx[2]] );
}
Msg( LogType_Stats, "Physics collision trimesh has %d vertices and %d faces.", numVert, numPri );
return pMesh;
} // RBExport::GetColMesh
//-----------------------------------------------------------------------------
BOOL CExporter::Capture()
{
VERIFY (m_Style!=eExportUndef);
Modifier* pPhysique;
IPhysiqueExport* pExport;
IPhyContextExport* pContext;
Object* pObject;
Matrix3 matMesh;
Matrix3 matZero;
if (!m_MeshNode){
ERR("Select mesh and try again.");
m_bHasError=TRUE;
return FALSE;
}
pObject = m_MeshNode->GetObjectRef();
if (!IsExportableMesh(m_MeshNode,pObject)){
ERR("Can't receive node references.");
m_bHasError=TRUE;
return FALSE;
}
// Get export interface
pPhysique = FindPhysiqueModifier(m_MeshNode);
if (!pPhysique){
ERR("Can't find Physique modifier.");
m_bHasError=TRUE;
return FALSE;
}
pExport = (IPhysiqueExport *)pPhysique->GetInterface(I_PHYINTERFACE);
if (!pExport){
ERR("Can't find Physique interface.");
m_bHasError=TRUE;
return FALSE;
}
// Get mesh initial transform (used to mult by the bone matrices)
int rval = CGINTM(m_MeshNode,pExport->GetInitNodeTM(m_MeshNode, matMesh));
matZero.Zero();
if (rval || matMesh.Equals(matZero, 0.0)){
ERR("Old CS version. Can't export mesh");
matMesh.IdentityMatrix();
}
// Add hierrarhy parts that has no effect on vertices,
// but required for hierrarhy stability
if (eExportMotion==m_Style){
if (m_AllBones.empty()){
ERR("Invalid skin object. Bone not found.");
return FALSE;
}
EConsole.ProgressStart((float)m_AllBones.size(),"..Capturing bones");
for (DWORD i=0; i<m_AllBones.size(); i++){
AddBone(m_AllBones[i], matMesh, pExport);
EConsole.ProgressInc();
}
EConsole.ProgressEnd();
}
bool bRes = TRUE;
if (eExportSkin==m_Style){
// For a given Object's INode get a
// ModContext Interface from the Physique Export Interface:
pContext = (IPhyContextExport *)pExport->GetContextInterface(m_MeshNode);
if (!pContext){
ERR("Can't find Physique context interface.");
return FALSE;
}
// convert to rigid with blending
pContext->ConvertToRigid(TRUE);
pContext->AllowBlending (TRUE);
// process vertices
int numVertices = pContext->GetNumberVertices();
EConsole.ProgressStart(float(numVertices),"..Capturing vertices");
for (int iVertex = 0; iVertex < numVertices; iVertex++ ){
IPhyVertexExport *pVertexExport = (IPhyVertexExport *)pContext->GetVertexInterface(iVertex);
R_ASSERT(pVertexExport);
// What kind of vertices are these?
int iVertexType = pVertexExport->GetVertexType();
IPhyRigidVertex* pRigidVertex=(IPhyRigidVertex*)pContext->GetVertexInterface(iVertex);
R_ASSERT (pRigidVertex);
switch (iVertexType){
case RIGID_TYPE:{
INode* node = pRigidVertex->GetNode();
R_ASSERT (node);
LPCSTR nm = node->GetName();
// get bone and create vertex
CVertexDef* pVertex = AddVertex();
int boneId = AddBone(node,matMesh,pExport);
if(BONE_NONE==boneId){
ERR ("Invalid bone: ",node->GetName());
bRes = FALSE;
}else pVertex->Append (boneId,1.f);
}break;
case RIGID_BLENDED_TYPE:{
IPhyBlendedRigidVertex* pBlendedRigidVertex=(IPhyBlendedRigidVertex*)pRigidVertex;
int cnt = pBlendedRigidVertex->GetNumberNodes();
CVertexDef* pVertex = AddVertex();
for (int i=0; i<cnt; i++){
INode* node = pBlendedRigidVertex->GetNode(i);
R_ASSERT (node);
LPCSTR nm = node->GetName();
// get bone and create vertex
int boneId = AddBone(node,matMesh,pExport);
if(BONE_NONE==boneId){
ERR ("Invalid bone: ",node->GetName());
bRes = FALSE;
}else pVertex->Append(boneId,pBlendedRigidVertex->GetWeight(i));
}
}break;
}
// release vertex
pContext->ReleaseVertexInterface( pRigidVertex );
EConsole.ProgressInc();
if (!bRes) break;
}
EConsole.ProgressEnd();
if (!bRes) return FALSE;
static int remap[3];
if (U.m_SkinFlipFaces){
remap[0] = 0;
remap[1] = 1;
remap[2] = 2;
}else{
remap[0] = 0;
remap[1] = 2;
remap[2] = 1;
}
// Process mesh
// Get object from node. Abort if no object.
Log("..Transforming mesh");
BOOL bDeleteTriObject;
R_ASSERT (pObject);
TriObject * pTriObject = GetTriObjectFromObjRef(pObject, &bDeleteTriObject);
if (!pTriObject){
ERR("Can't create tri object.");
return FALSE;
}
Mesh& M = pTriObject->mesh;
// Vertices
{
// check match with
int iNumVert = M.getNumVerts();
if (!(iNumVert==numVertices && iNumVert==m_Vertices.size()))
{
ERR("Non attached vertices found.");
if (bDeleteTriObject) delete(pTriObject);
return FALSE;
}
// transform vertices
for (int i=0; i<iNumVert; i++){
Point3 P = M.getVert(i);
Point3 T = matMesh.PointTransform(P);
T *= m_fGlobalScale;
m_Vertices[i]->SetPosition(T);
}
}
Log("..Parsing materials");
// Parse Materials
m_MtlMain = m_MeshNode->GetMtl();
R_ASSERT(m_MtlMain);
DWORD cSubMaterials=m_MtlMain->NumSubMtls();
if (cSubMaterials < 1) {
// Count the material itself as a submaterial.
cSubMaterials = 1;
}
// build normals
M.buildRenderNormals();
Log("..Converting vertices");
// our Faces and Vertices
{
for (int i=0; i<M.getNumFaces(); i++){
Face* gF = M.faces + i;
TVFace* tF = M.tvFace + i;
int m_id = gF->getMatID();
if (cSubMaterials == 1){
m_id = 0;
}else{
// SDK recommends mod'ing the material ID by the valid # of materials,
// as sometimes a material number that's too high is returned.
m_id %= cSubMaterials;
}
st_FACE* nF = xr_new<st_FACE>();
nF->m_id = m_id;
nF->sm_group = gF->getSmGroup();
for (int VVV=0; VVV<3; VVV++){
int vert_id = gF->v[remap[VVV]];
CVertexDef &D = *(m_Vertices[vert_id]);
Point3 &UV = M.tVerts[tF->t[remap[VVV]]];
st_VERT v;
v.Set (D);
v.P.set (D.P);
v.SetUV (UV.x,1-UV.y);
// v.sm_group = U.m_SkinSuppressSmoothGroup?0:gF->getSmGroup(); // smooth group
nF->v[VVV] = AddVert(v);
}
m_ExpFaces.push_back(nF);
}
}
if (bDeleteTriObject) delete(pTriObject);
}
UpdateParenting();
return bRes;
};
// Here we process mesh geometry for given node.
// Vertices for the geometry from the all meshes of the scene are allocated in
// one big vertex pool. One vertex can occur several times in this pool, because
// we add 3 new vertices for every face.
// After all meshes in the scene are processed, this pool is collapsed to remove
// duplicate vertices.
void RBExport::ProcessMesh( INode* node )
{
if (!node->Renderable() || node->IsNodeHidden())
{
return;
}
ObjectState os = node->EvalWorldState( m_CurTime );
Object* pObject = os.obj;
if (!pObject)
{
Warn( "Could not evaluate object state in node <%s>. Mesh was skipped.", node->GetName() );
return;
}
Matrix3 nodeTM = node->GetNodeTM( m_CurTime );
Matrix3 nodeTMAfterWSM = node->GetObjTMAfterWSM( m_CurTime );
Matrix3 mOffs = nodeTMAfterWSM*Inverse( nodeTM );
// triangulate
TriObject* pTriObj = 0;
if (pObject->CanConvertToType( Class_ID( TRIOBJ_CLASS_ID, 0 ) ))
{
pTriObj = (TriObject*)pObject->ConvertToType( m_CurTime, Class_ID( TRIOBJ_CLASS_ID, 0 ) );
}
bool bReleaseTriObj = (pTriObj != pObject);
if (!pTriObj)
{
Warn( "Could not triangulate mesh in node <%s>. Node was skipped", node->GetName() );
return;
}
if (!MeshModStackIsValid( node ))
{
Warn( "Modifier stack for node %s should be collapsed or contain only Skin modifier.",
node->GetName() );
}
// ensure, that vertex winding direction in polygon is CCW
Matrix3 objTM = node->GetObjTMAfterWSM( m_CurTime );
bool bNegScale = (DotProd( CrossProd( objTM.GetRow(0), objTM.GetRow(1) ), objTM.GetRow(2) ) >= 0.0);
int vx[3];
if (bNegScale)
{
vx[0] = 0;
vx[1] = 1;
vx[2] = 2;
}
else
{
vx[0] = 2;
vx[1] = 1;
vx[2] = 0;
}
Mesh& mesh = pTriObj->GetMesh();
bool bHasTexCoord = (mesh.numTVerts != 0);
bool bHasVertexColor = (mesh.numCVerts != 0) && m_pConfig->m_bExportVertexColors;
bool bHasNormal = m_pConfig->m_bExportNormals;
bool bHasSkin = ProcessSkin( node );
// some cosmetics
BOOL res = mesh.RemoveDegenerateFaces();
if (res)
{
Spam( "Degenerate faces were fixed." );
}
res = mesh.RemoveIllegalFaces();
if (res)
{
Spam( "Degenerate indices were fixed." );
}
ExpNode* pExpNode = GetExportedNode( node );
if (!pExpNode)
{
return;
}
int numPri = mesh.getNumFaces();
int numVert = mesh.numVerts;
// initialize helper array for building vertices' 0-circles
VertexPtrArray vertexEntry;
vertexEntry.resize( numVert );
memset( &vertexEntry[0], 0, sizeof( ExpVertex* )*numVert );
Spam( "Original mesh has %d vertices and %d faces.", numVert, numPri );
bool bHasVoidFaces = false;
// loop on mesh faces
for (int i = 0; i < numPri; i++)
{
Face& face = mesh.faces[i];
// calculate face normal
const Point3& v0 = mesh.verts[face.v[vx[0]]];
const Point3& v1 = mesh.verts[face.v[vx[1]]];
const Point3& v2 = mesh.verts[face.v[vx[2]]];
Point3 normal = -Normalize( (v1 - v0)^(v2 - v1) );
normal = mOffs.VectorTransform( normal );
normal = c_FlipTM.VectorTransform( normal );
// loop on face vertices
ExpVertex* pFaceVertex[3];
for (int j = 0; j < 3; j++)
{
ExpVertex v;
v.mtlID = pExpNode->GetMaterialIdx( face.getMatID() );
v.nodeID = pExpNode->m_Index;
if (v.mtlID < 0)
{
bHasVoidFaces = true;
}
// extract vertex position and apply world-space modifier to it
int vIdx = face.v[vx[j]];
Point3 pt = mesh.verts[vIdx];
pt = mOffs.PointTransform( pt );
pt = c_FlipTM.PointTransform( pt );
v.index = vIdx;
v.pos = Vec3( pt.x, pt.y, pt.z );
//v.pos *= m_WorldScale;
// extract skinning info
if (bHasSkin)
{
GetSkinInfo( v );
}
// assign normal
if (bHasNormal)
{
v.normal = Vec3( normal.x, normal.y, normal.z );
v.smGroup = face.smGroup;
}
// extract vertex colors
if (bHasVertexColor)
{
const VertColor& vcol = mesh.vertCol[mesh.vcFace[i].t[vx[j]]];
v.color = ColorToDWORD( Color( vcol.x, vcol.y, vcol.z ) );
}
// extract texture coordinates
if (bHasTexCoord)
{
const Point3& texCoord = mesh.tVerts[mesh.tvFace[i].t[vx[j]]];
v.uv.x = texCoord.x;
v.uv.y = 1.0f - texCoord.y;
// second texture coordinate channel
if (mesh.getNumMaps() > 1 && mesh.mapSupport( 2 ))
{
UVVert* pUVVert = mesh.mapVerts( 2 );
TVFace* pTVFace = mesh.mapFaces( 2 );
if (pUVVert && pTVFace)
{
const Point3& tc2 = pUVVert[pTVFace[i].t[vx[j]]];
v.uv2.x = tc2.x;
v.uv2.y = 1.0f - tc2.y;
}
}
}
// allocate new vertex
pFaceVertex[j] = AddVertex( v );
// we want vertices in the 0-ring neighborhood to be linked into closed linked list
if (vertexEntry[vIdx] == NULL)
{
vertexEntry[vIdx] = pFaceVertex[j];
pFaceVertex[j]->pNext = pFaceVertex[j];
}
else
{
vertexEntry[vIdx]->AddToZeroRing( pFaceVertex[j] );
}
}
AddPolygon( pFaceVertex[0], pFaceVertex[1], pFaceVertex[2] );
if (IsCanceled())
{
return;
}
}
// correct normals at vertices corresponding to smoothing groups
SmoothNormals( vertexEntry );
// put vertices into set (this removes duplicate vertices)
for (int i = 0; i < numVert; i++)
{
ExpVertex::ZeroRingIterator it( vertexEntry[i] );
while (it)
{
VertexSet::iterator sIt = m_VertexSet.find( it );
if (sIt == m_VertexSet.end())
{
m_VertexSet.insert( it );
}
else
{
it->pBase = (*sIt);
}
++it;
}
}
if (bReleaseTriObj)
{
delete pTriObj;
}
if (bHasVoidFaces)
{
Warn( "Mesh %s has faces with no material assigned.", node->GetName() );
}
} // RBExport::ProcessMesh
