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Shape import

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This commit is contained in:
kaetemi 2015-09-20 19:03:05 +02:00
parent 215237c8c5
commit 9f03654267
6 changed files with 223 additions and 6 deletions
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197
code/nel/tools/3d/mesh_utils/assimp_shape.cpp
View file

@ -30,12 +30,207 @@
#include <nel/misc/path.h>
#include <nel/misc/tool_logger.h>
#include <nel/3d/mesh.h>
using namespace std;
using namespace NLMISC;
using namespace NL3D;
void assimpShape(CMeshUtilsContext &context, CNodeContext &nodeContext)
// TODO: buildParticleSystem ??
// TODO: buildWaveMakerShape ??
// TODO: buildRemanence ??
// TODO: buildFlare ??
// Probably specific settings we can only do in meta editor on a dummy node..
// TODO: buildWaterShape specifics when node has water material
// TODO: CMeshMultiLod::CMeshMultiLodBuild multiLodBuild; export_mesh.cpp ln 228
// TODO: LOD MRM
// TODO: Skinned - reverse transform by skeleton root bone to align?
void assimpBuildBaseMesh(CMeshBase::CMeshBaseBuild &buildBaseMesh, CNodeContext &nodeContext)
{
const aiNode *node = nodeContext.InternalNode;
// TODO: Reference CExportNel::buildBaseMeshInterface
}
inline CVector convVector(const aiVector3D &av)
{
return CVector(-av.x, av.z, av.y); // COORDINATE CONVERSION
}
inline CRGBA convColor(const aiColor4D &ac)
{
return CRGBA(ac.r * 255.99f, ac.g * 255.99f, ac.b * 255.99f, ac.a * 255.99f);
}
bool assimpBuildMesh(CMesh::CMeshBuild &buildMesh, CMeshBase::CMeshBaseBuild &buildBaseMesh, CMeshUtilsContext &context, CNodeContext &nodeContext)
{
// TODO
// *** If the mesh is skined, vertices will be exported in world space.
// *** If the mesh is not skined, vertices will be exported in offset space.
// TODO Support skinning
const aiNode *node = nodeContext.InternalNode;
// Basic validations before processing starts
for (unsigned int mi = 0; mi < node->mNumMeshes; ++mi)
{
// TODO: Maybe needs to be the same count too for all meshes, so compare with mesh 0
const aiMesh *mesh = context.InternalScene->mMeshes[node->mMeshes[mi]];
if (mesh->GetNumColorChannels() > 2)
{
tlerror(context.ToolLogger, context.Settings.SourceFilePath.c_str(),
"(%s) mesh->GetNumColorChannels() > 2", node->mName.C_Str());
return false;
}
if (mesh->GetNumUVChannels() > 1)
{
tlerror(context.ToolLogger, context.Settings.SourceFilePath.c_str(),
"(%s) mesh->GetNumUVChannels() > 1", node->mName.C_Str());
return false;
}
if (!mesh->HasNormals())
{
tlerror(context.ToolLogger, context.Settings.SourceFilePath.c_str(),
"(%s) !mesh->HasNormals()", node->mName.C_Str());
return false;
}
}
// TODO: UV Channels
for (uint i = 0; i < CVertexBuffer::MaxStage; ++i)
buildMesh.UVRouting[i] = i;
// Meshes in assimp are separated per material, so we need to re-merge them for the mesh build process
// This process also deduplicates vertices
sint32 numVertices = 0;
for (unsigned int mi = 0; mi < node->mNumMeshes; ++mi)
numVertices += context.InternalScene->mMeshes[node->mMeshes[mi]]->mNumVertices;
buildMesh.Vertices.resize(numVertices);
numVertices = 0;
map<CVector, sint32> vertexIdentifiers;
vector<vector<sint32> > vertexRemapping;
vertexRemapping.resize(node->mNumMeshes);
for (unsigned int mi = 0; mi < node->mNumMeshes; ++mi)
{
const aiMesh *mesh = context.InternalScene->mMeshes[node->mMeshes[mi]];
vertexRemapping[mi].resize(mesh->mNumVertices);
for (unsigned int vi = 0; vi < mesh->mNumVertices; ++vi)
{
CVector vec = convVector(mesh->mVertices[vi]);
map<CVector, sint32>::iterator vecit = vertexIdentifiers.find(vec);
if (vecit == vertexIdentifiers.end())
{
buildMesh.Vertices[numVertices] = vec;
vertexIdentifiers[vec] = numVertices;
vertexRemapping[mi][vi] = numVertices;
++numVertices;
}
else
{
vertexRemapping[mi][vi] = vecit->second;
}
}
}
buildMesh.Vertices.resize(numVertices);
// Process all faces
// WONT IMPLEMENT: Radial faces generation... is linked to smoothing group...
// leave radial normals generation to modeling tool for now...
sint32 numFaces = 0;
for (unsigned int mi = 0; mi < node->mNumMeshes; ++mi)
numFaces += context.InternalScene->mMeshes[node->mMeshes[mi]]->mNumFaces;
buildMesh.Faces.resize(numFaces);
numFaces = 0;
for (unsigned int mi = 0; mi < node->mNumMeshes; ++mi)
{
const aiMesh *mesh = context.InternalScene->mMeshes[node->mMeshes[mi]];
unsigned int numColorChannels = mesh->GetNumColorChannels(); // TODO: Maybe needs to be same on all mesh parts
for (unsigned int fi = 0; fi < mesh->mNumFaces; ++fi)
{
const aiFace &af = mesh->mFaces[fi];
if (af.mNumIndices != 3)
{
tlerror(context.ToolLogger, context.Settings.SourceFilePath.c_str(),
"(%s) Face %i on mesh %i has %i faces", node->mName.C_Str(), fi, mi, af.mNumIndices);
continue; // return false; Keep going, just drop the face for better user experience
}
CMesh::CFace &face = buildMesh.Faces[numFaces];
face.MaterialId = mi;
face.SmoothGroup = 0; // No smoothing group (bitfield)
face.Corner[0].Vertex = vertexRemapping[mi][af.mIndices[0]];
face.Corner[1].Vertex = vertexRemapping[mi][af.mIndices[1]];
face.Corner[2].Vertex = vertexRemapping[mi][af.mIndices[2]];
face.Corner[0].Normal = convVector(mesh->mNormals[af.mIndices[0]]);
face.Corner[0].Normal = convVector(mesh->mNormals[af.mIndices[1]]);
face.Corner[0].Normal = convVector(mesh->mNormals[af.mIndices[2]]);
// TODO: UV
if (numColorChannels > 0) // TODO: Verify
{
face.Corner[0].Color = convColor(mesh->mColors[0][af.mIndices[0]]);
face.Corner[1].Color = convColor(mesh->mColors[0][af.mIndices[1]]);
face.Corner[2].Color = convColor(mesh->mColors[0][af.mIndices[2]]);
if (numColorChannels > 1) // TODO: Verify
{
face.Corner[0].Specular = convColor(mesh->mColors[0][af.mIndices[0]]);
face.Corner[1].Specular = convColor(mesh->mColors[0][af.mIndices[1]]);
face.Corner[2].Specular = convColor(mesh->mColors[0][af.mIndices[2]]);
}
}
// TODO: Color modulate, alpha, use color alpha for vp tree, etc
++numFaces;
}
}
buildMesh.Faces.resize(numFaces);
// clear for MRM info
buildMesh.Interfaces.clear();
buildMesh.InterfaceLinks.clear();
// TODO: Export VP
buildMesh.MeshVertexProgram = NULL;
return true;
}
bool assimpShape(CMeshUtilsContext &context, CNodeContext &nodeContext)
{
// Reference: export_mesh.cpp, buildShape
nodeContext.Shape = NULL;
const aiNode *node = nodeContext.InternalNode;
nlassert(node->mNumMeshes);
// Fill the build interface of CMesh
CMeshBase::CMeshBaseBuild buildBaseMesh;
assimpBuildBaseMesh(buildBaseMesh, nodeContext);
CMesh::CMeshBuild buildMesh;
if (!assimpBuildMesh(buildMesh, buildBaseMesh, context, nodeContext))
return false;
// Make a CMesh object
CMesh *mesh = new CMesh();
// Build the mesh with the build interface
mesh->build(buildBaseMesh, buildMesh);
// TODO
// Reference: export_mesh.cpp, buildShape
// Must be done after the build to update vertex links
// Pass to buildMeshMorph if the original mesh is skinned or not
// buildMeshMorph(buildMesh, node, time, nodeMap != NULL);
// mesh->setBlendShapes(buildMesh.BlendShapes);
// optimize number of material
// mesh->optimizeMaterialUsage(materialRemap);
// Store mesh in context
nodeContext.Shape = mesh;
return true;
}
/* end of file */

2
code/nel/tools/3d/mesh_utils/assimp_shape.h
View file

@ -20,6 +20,6 @@
struct CMeshUtilsContext;
struct CNodeContext;
void assimpShape(CMeshUtilsContext &context, CNodeContext &nodeContext);
bool assimpShape(CMeshUtilsContext &context, CNodeContext &nodeContext);
/* end of file */

11
code/nel/tools/3d/mesh_utils/mesh_utils.cpp
View file

@ -47,7 +47,7 @@ void importShapes(CMeshUtilsContext &context, const aiNode *node)
{
CNodeContext &nodeContext = context.Nodes[node->mName.C_Str()];
CNodeMeta &nodeMeta = context.SceneMeta.Nodes[node->mName.C_Str()];
if (nodeMeta.ExportMesh == TMeshShape)
if (nodeMeta.ExportMesh == TMeshShape && nodeMeta.InstanceName.empty())
{
if (node->mNumMeshes)
{
@ -232,7 +232,11 @@ int exportScene(const CMeshUtilsSettings &settings)
CDatabaseConfig::initTextureSearchDirectories();
Assimp::Importer importer;
const aiScene *scene = importer.ReadFile(settings.SourceFilePath, aiProcess_Triangulate | aiProcess_ValidateDataStructure); // aiProcess_SplitLargeMeshes | aiProcess_LimitBoneWeights
const aiScene *scene = importer.ReadFile(settings.SourceFilePath, 0
| aiProcess_Triangulate
| aiProcess_ValidateDataStructure
| aiProcess_GenNormals // Or GenSmoothNormals? TODO: Validate smoothness between material boundaries!
); // aiProcess_SplitLargeMeshes | aiProcess_LimitBoneWeights
if (!scene)
{
const char *errs = importer.GetErrorString();
@ -265,6 +269,9 @@ int exportScene(const CMeshUtilsSettings &settings)
// ]
// -- SKEL FLAG --
// TODO
// First import materials...
importShapes(context, context.InternalScene->mRootNode);
return EXIT_SUCCESS;

9
code/nel/tools/3d/mesh_utils/scene_context.h
View file

@ -24,6 +24,8 @@
#include <nel/misc/sstring.h>
#include <nel/misc/tool_logger.h>
#include <nel/misc/smart_ptr.h>
#include <nel/misc/matrix.h>
#ifndef NL_NODE_INTERNAL_TYPE
#define NL_NODE_INTERNAL_TYPE void
@ -32,6 +34,10 @@
#define NL_SCENE_INTERNAL_TYPE void
#endif
namespace NL3D {
class IShape;
}
struct CNodeContext
{
CNodeContext() :
@ -43,6 +49,9 @@ struct CNodeContext
const NL_NODE_INTERNAL_TYPE *InternalNode;
bool IsBone;
// NLMISC::CMatrix Transform; // TODO
NLMISC::CRefPtr<NL3D::IShape> Shape;
};
typedef std::map<NLMISC::CSString, CNodeContext> TNodeContextMap;

4
code/nel/tools/3d/mesh_utils/scene_meta.cpp
View file

@ -28,7 +28,8 @@ using namespace NLMISC;
CNodeMeta::CNodeMeta() :
AddToIG(true),
ExportMesh(TMeshShape),
ExportBone(TBoneAuto)
ExportBone(TBoneAuto),
AutoAnim(false)
{
}
@ -42,6 +43,7 @@ void CNodeMeta::serial(NLMISC::IStream &s)
s.serial(InstanceShape);
s.serial(InstanceName);
s.serial(InstanceGroupName);
s.serial(AutoAnim);
}
CSceneMeta::CSceneMeta() :

6
code/nel/tools/3d/mesh_utils/scene_meta.h
View file

@ -32,6 +32,8 @@ enum TMesh
TMeshCollisionInt = 2,
TMeshCollisionExt = 3,
TMeshZone = 4,
TMeshPortal = 5,
TMeshCluster = 6,
};
enum TBone
@ -47,12 +49,14 @@ struct CNodeMeta
bool AddToIG; // Add this node to an instance group
TMesh ExportMesh;
TBone ExportBone;
TBone ExportBone;
std::string InstanceShape;
std::string InstanceName;
std::string InstanceGroupName;
bool AutoAnim;
void serial(NLMISC::IStream &s);
};