Now importing multiple submeshes / materials per object during FBX import
--HG-- extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4019
This commit is contained in:
kearwood
@@ -276,24 +276,205 @@ void LoadMesh(std::vector<KRResource *> &resources, KFbxGeometryConverter *pGeom
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KFbxVector4* control_points = pMesh->GetControlPoints();
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int polygon_count = pMesh->GetPolygonCount();
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int uv_count = pMesh->GetElementUVCount();
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int normal_count = pMesh->GetElementNormalCount();
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int tangent_count = pMesh->GetElementTangentCount();
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int material_count = pMesh->GetElementMaterialCount();
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printf(" Polygon Count: %i (before triangulation: %i)\n", polygon_count, pSourceMesh->GetPolygonCount());
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std::vector<KRVector3> vertices;
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std::vector<KRVector2> uva;
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std::vector<KRVector2> uvb;
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std::vector<KRVector3> normals;
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std::vector<KRVector3> tangents;
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std::vector<int> submesh_lengths;
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std::vector<int> submesh_starts;
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std::vector<std::string> material_names;
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int source_vertex_id = 0;
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int dest_vertex_id = 0;
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KFbxGeometryElementMaterial* pMaterial = NULL;
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int iMaterial = -1;
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int mat_vertex_count = 0;
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int mat_vertex_start = 0;
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for(int iPolygon = 0; iPolygon < polygon_count; iPolygon++) {
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int lPolygonSize = pMesh->GetPolygonSize(iPolygon);
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if(lPolygonSize != 3) {
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assert(lPolygonSize == 3);
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source_vertex_id += lPolygonSize;
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printf(" Warning - Poly with %i vertices found. Expecting only triangles.", lPolygonSize);
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} else {
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// ----====---- Read SubMesh / Material Mapping ----====----
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int iPrevMat = iMaterial;
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KFbxGeometryElementMaterial *pPrevMat = pMaterial;
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iMaterial = -1;
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pMaterial = NULL;
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for (int l = 0; l < material_count; l++)
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{
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KFbxGeometryElementMaterial* leMat = pMesh->GetElementMaterial(l);
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if(leMat) {
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if (leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX || leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX_TO_DIRECT) {
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int new_id = leMat->GetIndexArray().GetAt(iPolygon);
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if(new_id >= 0) {
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iMaterial = new_id;
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pMaterial = leMat;
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}
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}
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}
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}
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if(iMaterial != iPrevMat) {
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if(pPrevMat && mat_vertex_count) {
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submesh_starts.push_back(mat_vertex_start);
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submesh_lengths.push_back(mat_vertex_count);
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material_names.push_back(pNode->GetMaterial(iMaterial)->GetName());
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printf(" Material \"%s\" from %i to %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
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}
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mat_vertex_count = 0;
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mat_vertex_start = dest_vertex_id;
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}
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// ----====---- Read Vertex-level Attributes ----====----
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for(int iVertex=0; iVertex<3; iVertex++) {
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// ----====---- Read Vertex Position ----====----
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int lControlPointIndex = pMesh->GetPolygonVertex(iPolygon, iVertex);
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KFbxVector4 v = control_points[lControlPointIndex];
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vertices.push_back(KRVector3(v[0], v[1], v[2]));
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// ----====---- Read UVs ----====----
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for (int l = 0; l < uv_count; ++l)
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{
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KFbxVector2 uv;
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KFbxGeometryElementUV* leUV = pMesh->GetElementUV(l);
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switch (leUV->GetMappingMode()) {
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case KFbxGeometryElement::eBY_CONTROL_POINT:
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switch (leUV->GetReferenceMode()) {
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case KFbxGeometryElement::eDIRECT:
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uv = leUV->GetDirectArray().GetAt(lControlPointIndex);
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break;
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case KFbxGeometryElement::eINDEX_TO_DIRECT:
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{
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int id = leUV->GetIndexArray().GetAt(lControlPointIndex);
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uv = leUV->GetDirectArray().GetAt(id);
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}
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break;
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default:
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break; // other reference modes not shown here!
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}
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break;
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case KFbxGeometryElement::eBY_POLYGON_VERTEX:
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{
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int lTextureUVIndex = pMesh->GetTextureUVIndex(iPolygon, iVertex);
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switch (leUV->GetReferenceMode())
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{
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case KFbxGeometryElement::eDIRECT:
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case KFbxGeometryElement::eINDEX_TO_DIRECT:
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{
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uv = leUV->GetDirectArray().GetAt(lTextureUVIndex);
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}
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break;
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default:
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break; // other reference modes not shown here!
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}
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}
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break;
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case KFbxGeometryElement::eBY_POLYGON: // doesn't make much sense for UVs
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case KFbxGeometryElement::eALL_SAME: // doesn't make much sense for UVs
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case KFbxGeometryElement::eNONE: // doesn't make much sense for UVs
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break;
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}
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if(l == 0) {
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uva.push_back(KRVector2(uv[0], uv[1]));
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} else if(l == 1) {
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uvb.push_back(KRVector2(uv[0], uv[1]));
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}
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}
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// ----====---- Read Normals ----====----
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for(int l = 0; l < normal_count; ++l)
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{
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KFbxVector4 new_normal;
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KFbxGeometryElementNormal* leNormal = pMesh->GetElementNormal(l);
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if(leNormal->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
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switch (leNormal->GetReferenceMode())
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{
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case KFbxGeometryElement::eDIRECT:
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new_normal = leNormal->GetDirectArray().GetAt(source_vertex_id);
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break;
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case KFbxGeometryElement::eINDEX_TO_DIRECT:
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{
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int id = leNormal->GetIndexArray().GetAt(source_vertex_id);
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new_normal = leNormal->GetDirectArray().GetAt(id);
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}
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break;
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default:
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break; // other reference modes not shown here!
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}
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}
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if(l == 0) {
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normals.push_back(KRVector3(new_normal[0], new_normal[1], new_normal[2]));
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}
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}
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// ----====---- Read Tangents ----====----
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for(int l = 0; l < tangent_count; ++l)
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{
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KFbxVector4 new_tangent;
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KFbxGeometryElementTangent* leTangent = pMesh->GetElementTangent(l);
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if(leTangent->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
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switch (leTangent->GetReferenceMode()) {
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case KFbxGeometryElement::eDIRECT:
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new_tangent = leTangent->GetDirectArray().GetAt(source_vertex_id);
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break;
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case KFbxGeometryElement::eINDEX_TO_DIRECT:
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{
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int id = leTangent->GetIndexArray().GetAt(source_vertex_id);
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new_tangent = leTangent->GetDirectArray().GetAt(id);
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}
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break;
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default:
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break; // other reference modes not shown here!
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}
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}
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if(l == 0) {
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tangents.push_back(KRVector3(new_tangent[0], new_tangent[1], new_tangent[2]));
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}
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}
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source_vertex_id++;
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dest_vertex_id++;
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mat_vertex_count++;
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}
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}
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}
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// ----====---- Complete last material / submesh ----====----
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if(iMaterial >= 0 && mat_vertex_count) {
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submesh_starts.push_back(mat_vertex_start);
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submesh_lengths.push_back(mat_vertex_count);
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material_names.push_back(pNode->GetMaterial(iMaterial)->GetName());
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printf(" Material \"%s\" from %i to %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
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}
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// ----====---- Generate Output Mesh Object ----====----
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KRMesh *new_mesh = new KRMesh(pNode->GetName());
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new_mesh->LoadData(vertices, uva, normals, tangents, submesh_starts, submesh_lengths, material_names);
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