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Export rig to fbx 

Tested in Blender 2.79 and Unity 2017.4.1f1
master
Jeremy Hu 2018-10-22 07:29:01 +08:00
parent 0320be1c15
commit 34e2ac1fef
5 changed files with 517 additions and 14 deletions
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5
ACKNOWLEDGEMENTS.html
View File

@ -1081,3 +1081,8 @@ https://www.reddit.com/r/gamedev/comments/5iuf3h/i_am_writting_a_3d_monster_mode
<pre>
https://banexdevblog.wordpress.com/2014/06/23/a-quick-tutorial-about-the-fbx-ascii-format/
</pre>
<h1>Tianyu Lang</h1>
<pre>
https://www.gamedev.net/articles/programming/graphics/how-to-work-with-fbx-sdk-r3582
</pre>

511
src/fbxfile.cpp
View File

@ -3,9 +3,17 @@
#include <QDateTime>
#include "fbxfile.h"
#include "version.h"
#include "jointnodetree.h"
using namespace fbx;
std::vector<double> FbxFileWriter::m_identityMatrix = {
1.000000, 0.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000,
0.000000, 0.000000, 1.000000, 0.000000,
0.000000, 0.000000, 0.000000, 1.000000
};
void FbxFileWriter::createFbxHeader()
{
FBXNode headerExtension("FBXHeaderExtension");
@ -282,7 +290,7 @@ void FbxFileWriter::createGlobalSettings()
p.addProperty("double");
p.addProperty("Number");
p.addProperty("");
p.addProperty((double)1.000000);
p.addProperty((double)100.000000);
properties.addChild(p);
}
{
@ -401,11 +409,10 @@ void FbxFileWriter::createReferences()
m_fbxDocument.nodes.push_back(references);
}
void FbxFileWriter::createDefinitions()
void FbxFileWriter::createDefinitions(size_t deformerCount)
{
FBXNode definitions("Definitions");
definitions.addPropertyNode("Version", (int32_t)100);
definitions.addPropertyNode("Count", (int32_t)4);
{
FBXNode objectType("ObjectType");
objectType.addProperty("GlobalSettings");
@ -497,7 +504,7 @@ void FbxFileWriter::createDefinitions()
FBXNode objectType("ObjectType");
objectType.addProperty("Model");
FBXNode count("Count");
count.addProperty((int32_t)1);
count.addProperty((int32_t)(1 + deformerCount)); // 1 for mesh, deformerCount for limbNodes
objectType.addChild(count);
FBXNode propertyTemplate("PropertyTemplate");
propertyTemplate.addProperty("FbxNode");
@ -1184,6 +1191,27 @@ void FbxFileWriter::createDefinitions()
objectType.addChild(FBXNode());
definitions.addChild(objectType);
}
if (deformerCount > 0) {
FBXNode objectType("ObjectType");
objectType.addProperty("Deformer");
objectType.addPropertyNode("Count", (int32_t)deformerCount);
objectType.addChild(FBXNode());
definitions.addChild(objectType);
}
if (deformerCount > 0) {
FBXNode objectType("ObjectType");
objectType.addProperty("NodeAttribute");
objectType.addPropertyNode("Count", (int32_t)deformerCount);
objectType.addChild(FBXNode());
definitions.addChild(objectType);
}
if (deformerCount > 0) {
FBXNode objectType("ObjectType");
objectType.addProperty("Pose");
objectType.addPropertyNode("Count", (int32_t)1);
objectType.addChild(FBXNode());
definitions.addChild(objectType);
}
{
FBXNode objectType("ObjectType");
objectType.addProperty("Material");
@ -1443,6 +1471,8 @@ void FbxFileWriter::createDefinitions()
}
FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
const std::vector<AutoRiggerBone> *resultRigBones,
const std::map<int, AutoRiggerVertexWeights> *resultRigWeights,
const QString &filename) :
m_filename(filename)
{
@ -1453,7 +1483,11 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
createGlobalSettings();
createDocuments();
createReferences();
createDefinitions();
size_t deformerCount = 0;
if (resultRigBones && !resultRigBones->empty())
deformerCount = 1 + resultRigBones->size(); // 1 for the root Skin deformer
createDefinitions(deformerCount);
FBXNode geometry("Geometry");
int64_t geometryId = m_next64Id++;
@ -1523,8 +1557,8 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
geometry.addChild(layer);
geometry.addChild(FBXNode());
FBXNode model("Model");
int64_t modelId = m_next64Id++;
FBXNode model("Model");
model.addProperty(modelId);
model.addProperty(std::vector<uint8_t>({'u','n','a','m','e','d',0,1,'M','o','d','e','l'}), 'S');
model.addProperty("Mesh");
@ -1548,9 +1582,9 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
p.addProperty("Lcl Scaling");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)100.000000);
p.addProperty((double)100.000000);
p.addProperty((double)100.000000);
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
properties.addChild(p);
}
{
@ -1580,6 +1614,388 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
model.addPropertyNode("Culling", "CullingOff");
model.addChild(FBXNode());
FBXNode pose("Pose");
int64_t poseId = 0;
std::vector<FBXNode> deformers;
std::vector<int64_t> deformerIds;
std::vector<FBXNode> limbNodes;
std::vector<int64_t> limbNodeIds;
std::vector<FBXNode> nodeAttributes;
std::vector<int64_t> nodeAttributeIds;
int64_t skinId = 0;
int64_t armatureId = 0;
JointNodeTree jointNodeTree(resultRigBones);
const auto &boneNodes = jointNodeTree.nodes();
if (resultRigBones && !resultRigBones->empty()) {
std::vector<std::pair<std::vector<int32_t>, std::vector<double>>> bindPerBone(resultRigBones->size());
if (resultRigWeights && !resultRigWeights->empty()) {
for (const auto &item: *resultRigWeights) {
for (int i = 0; i < 4; ++i) {
const auto &boneIndex = item.second.boneIndicies[i];
Q_ASSERT(boneIndex < bindPerBone.size());
if (0 == boneIndex)
break;
bindPerBone[boneIndex].first.push_back(item.first);
bindPerBone[boneIndex].second.push_back(item.second.boneWeights[i]);
}
}
}
{
skinId = m_next64Id++;
deformerIds.push_back(skinId);
deformers.push_back(FBXNode("Deformer"));
FBXNode &deformer = deformers.back();
deformer.addProperty(skinId);
deformer.addProperty(std::vector<uint8_t>({'A','r','m','a','t','u','r','e',0,1,'D','e','f','o','r','m','e','r'}), 'S');
deformer.addProperty("Skin");
deformer.addPropertyNode("Version", (int32_t)101);
deformer.addPropertyNode("Link_DeformAcuracy", (double)50.000000);
deformer.addChild(FBXNode());
}
{
armatureId = m_next64Id++;
limbNodeIds.push_back(armatureId);
limbNodes.push_back(FBXNode("Model"));
FBXNode &limbNode = limbNodes.back();
limbNode.addProperty(armatureId);
limbNode.addProperty(std::vector<uint8_t>({'A','r','m','a','t','u','r','e',0,1,'M','o','d','e','l'}), 'S');
limbNode.addProperty("Null");
limbNode.addPropertyNode("Version", (int32_t)232);
{
FBXNode properties("Properties70");
{
FBXNode p("P");
p.addProperty("Lcl Rotation");
p.addProperty("Lcl Rotation");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)0.000000);
p.addProperty((double)0.000000);
p.addProperty((double)0.000000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("Lcl Scaling");
p.addProperty("Lcl Scaling");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("DefaultAttributeIndex");
p.addProperty("int");
p.addProperty("Integer");
p.addProperty("");
p.addProperty((int32_t)0);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("InheritType");
p.addProperty("enum");
p.addProperty("");
p.addProperty("");
p.addProperty((int32_t)1);
properties.addChild(p);
}
properties.addChild(FBXNode());
limbNode.addChild(properties);
}
limbNode.addPropertyNode("MultiLayer", (int32_t)0);
limbNode.addPropertyNode("MultiTake", (int32_t)0);
limbNode.addPropertyNode("Shading", (bool)true);
limbNode.addPropertyNode("Culling", "CullingOff");
limbNode.addChild(FBXNode());
}
{
int64_t nodeAttributeId = m_next64Id++;
nodeAttributeIds.push_back(nodeAttributeId);
nodeAttributes.push_back(FBXNode("NodeAttribute"));
FBXNode &nodeAttribute = nodeAttributes.back();
nodeAttribute.addProperty(nodeAttributeId);
nodeAttribute.addProperty(std::vector<uint8_t>({'A','r','m','a','t','u','r','e',0,1,'N','o','d','e','A','t','t','r','i','b','u','t','e'}), 'S');
nodeAttribute.addProperty("Null");
nodeAttribute.addPropertyNode("TypeFlags", "Null");
{
FBXNode properties("Properties70");
{
FBXNode p("P");
p.addProperty("Color");
p.addProperty("ColorRGB");
p.addProperty("Color");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)0.800000);
p.addProperty((double)0.800000);
p.addProperty((double)0.800000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("Size");
p.addProperty("double");
p.addProperty("Number");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)100.000000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("Look");
p.addProperty("enum");
p.addProperty("");
p.addProperty("");
p.addProperty((int32_t)1);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("InheritType");
p.addProperty("enum");
p.addProperty("");
p.addProperty("");
p.addProperty((int32_t)1);
properties.addChild(p);
}
properties.addChild(FBXNode());
nodeAttribute.addChild(properties);
}
nodeAttribute.addPropertyNode("MultiLayer", (int32_t)0);
nodeAttribute.addPropertyNode("MultiTake", (int32_t)0);
nodeAttribute.addPropertyNode("Shading", (bool)true);
nodeAttribute.addPropertyNode("Culling", "CullingOff");
nodeAttribute.addChild(FBXNode());
}
for (size_t i = 0; i < resultRigBones->size(); ++i) {
const auto &bone = (*resultRigBones)[i];
const auto &jointNode = boneNodes[i];
{
int64_t clusterId = m_next64Id++;
deformerIds.push_back(clusterId);
deformers.push_back(FBXNode("Deformer"));
FBXNode &deformer = deformers.back();
deformer.addProperty(clusterId);
std::vector<uint8_t> name;
QString clusterName = APP_NAME + QString(":") + bone.name;
for (const auto &c: clusterName) {
name.push_back((uint8_t)c.toLatin1());
}
name.push_back(0);
name.push_back(1);
name.push_back('S');
name.push_back('u');
name.push_back('b');
name.push_back('D');
name.push_back('e');
name.push_back('f');
name.push_back('o');
name.push_back('r');
name.push_back('m');
name.push_back('e');
name.push_back('r');
deformer.addProperty(name, 'S');
deformer.addProperty("Cluster");
deformer.addPropertyNode("Version", (int32_t)100);
FBXNode userData("UserData");
userData.addProperty("");
userData.addProperty("");
deformer.addChild(userData);
deformer.addPropertyNode("Indexes", bindPerBone[i].first);
deformer.addPropertyNode("Weights", bindPerBone[i].second);
deformer.addPropertyNode("Transform", matrixToVector(jointNode.transformMatrix.inverted()));
deformer.addPropertyNode("TransformLink", matrixToVector(jointNode.transformMatrix));
deformer.addPropertyNode("TransformAssociateModel", m_identityMatrix);
deformer.addChild(FBXNode());
}
{
int64_t limbNodeId = m_next64Id++;
limbNodeIds.push_back(limbNodeId);
limbNodes.push_back(FBXNode("Model"));
FBXNode &limbNode = limbNodes.back();
limbNode.addProperty(limbNodeId);
std::vector<uint8_t> name;
QString limbNodeName = APP_NAME + QString(":") + bone.name;
for (const auto &c: limbNodeName) {
name.push_back((uint8_t)c.toLatin1());
}
name.push_back(0);
name.push_back(1);
name.push_back('M');
name.push_back('o');
name.push_back('d');
name.push_back('e');
name.push_back('l');
limbNode.addProperty(name, 'S');
limbNode.addProperty("LimbNode");
limbNode.addPropertyNode("Version", (int32_t)232);
{
FBXNode properties("Properties70");
{
FBXNode p("P");
p.addProperty("Lcl Translation");
p.addProperty("Lcl Translation");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)jointNode.translation.x());
p.addProperty((double)jointNode.translation.y());
p.addProperty((double)jointNode.translation.z());
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("Lcl Rotation");
p.addProperty("Lcl Rotation");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)0.000000);
p.addProperty((double)0.000000);
p.addProperty((double)0.000000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("Lcl Scaling");
p.addProperty("Lcl Scaling");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
p.addProperty((double)1.000000);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("DefaultAttributeIndex");
p.addProperty("int");
p.addProperty("Integer");
p.addProperty("");
p.addProperty((int32_t)0);
properties.addChild(p);
}
{
FBXNode p("P");
p.addProperty("InheritType");
p.addProperty("enum");
p.addProperty("");
p.addProperty("");
p.addProperty((int32_t)1);
properties.addChild(p);
}
properties.addChild(FBXNode());
limbNode.addChild(properties);
}
limbNode.addPropertyNode("MultiLayer", (int32_t)0);
limbNode.addPropertyNode("MultiTake", (int32_t)0);
limbNode.addPropertyNode("Shading", (bool)true);
limbNode.addPropertyNode("Culling", "CullingOff");
limbNode.addChild(FBXNode());
}
{
int64_t nodeAttributeId = m_next64Id++;
nodeAttributeIds.push_back(nodeAttributeId);
nodeAttributes.push_back(FBXNode("NodeAttribute"));
FBXNode &nodeAttribute = nodeAttributes.back();
nodeAttribute.addProperty(nodeAttributeId);
std::vector<uint8_t> name;
QString nodeAttributeName = APP_NAME + QString(":") + bone.name;
for (const auto &c: nodeAttributeName) {
name.push_back((uint8_t)c.toLatin1());
}
name.push_back(0);
name.push_back(1);
name.push_back('N');
name.push_back('o');
name.push_back('d');
name.push_back('e');
name.push_back('A');
name.push_back('t');
name.push_back('t');
name.push_back('r');
name.push_back('i');
name.push_back('b');
name.push_back('u');
name.push_back('t');
name.push_back('e');
nodeAttribute.addProperty(name, 'S');
nodeAttribute.addProperty("LimbNode");
nodeAttribute.addPropertyNode("TypeFlags", "Skeleton");
{
FBXNode properties("Properties70");
{
FBXNode p("P");
p.addProperty("Size");
p.addProperty("double");
p.addProperty("Number");
p.addProperty("");
p.addProperty("A");
p.addProperty((double)3.300000);
properties.addChild(p);
}
properties.addChild(FBXNode());
nodeAttribute.addChild(properties);
}
nodeAttribute.addPropertyNode("MultiLayer", (int32_t)0);
nodeAttribute.addPropertyNode("MultiTake", (int32_t)0);
nodeAttribute.addPropertyNode("Shading", (bool)true);
nodeAttribute.addPropertyNode("Culling", "CullingOff");
nodeAttribute.addChild(FBXNode());
}
}
}
if (deformerCount > 0)
{
poseId = m_next64Id++;
pose.addProperty(poseId);
pose.addProperty(std::vector<uint8_t>({'u','n','a','m','e','d',0,1,'P','o','s','e'}), 'S');
pose.addProperty("BindPose");
pose.addPropertyNode("Type", "BindPose");
pose.addPropertyNode("Version", (int32_t)100);
pose.addPropertyNode("NbPoseNodes", (int32_t)(1 + deformerCount)); // +1 for model
{
FBXNode poseNode("PoseNode");
poseNode.addPropertyNode("Node", (int64_t)modelId);
poseNode.addPropertyNode("Matrix", m_identityMatrix);
poseNode.addChild(FBXNode());
pose.addChild(poseNode);
}
{
FBXNode poseNode("PoseNode");
poseNode.addPropertyNode("Node", (int64_t)armatureId);
poseNode.addPropertyNode("Matrix", m_identityMatrix);
poseNode.addChild(FBXNode());
pose.addChild(poseNode);
}
for (size_t i = 0; i < boneNodes.size(); i++) {
const auto &boneNode = boneNodes[i];
FBXNode poseNode("PoseNode");
poseNode.addPropertyNode("Node", (int64_t)limbNodeIds[1 + i]);
poseNode.addPropertyNode("Matrix", matrixToVector(boneNode.transformMatrix));
poseNode.addChild(FBXNode());
pose.addChild(poseNode);
}
pose.addChild(FBXNode());
}
FBXNode material("Material");
int64_t materialId = m_next64Id++;
material.addProperty(materialId);
@ -1718,7 +2134,18 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
FBXNode objects("Objects");
objects.addChild(geometry);
objects.addChild(model);
for (const auto &limbNode: limbNodes) {
objects.addChild(limbNode);
}
if (deformerCount > 0)
objects.addChild(pose);
objects.addChild(material);
for (const auto &deformer: deformers) {
objects.addChild(deformer);
}
for (const auto &nodeAttribute: nodeAttributes) {
objects.addChild(nodeAttribute);
}
objects.addChild(FBXNode());
m_fbxDocument.nodes.push_back(objects);
@ -1730,6 +2157,14 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
p.addProperty((int64_t)0);
connections.addChild(p);
}
if (armatureId > 0)
{
FBXNode p("C");
p.addProperty("OO");
p.addProperty(armatureId);
p.addProperty((int64_t)0);
connections.addChild(p);
}
{
FBXNode p("C");
p.addProperty("OO");
@ -1737,6 +2172,51 @@ FbxFileWriter::FbxFileWriter(MeshResultContext &resultContext,
p.addProperty(modelId);
connections.addChild(p);
}
if (skinId > 0)
{
FBXNode p("C");
p.addProperty("OO");
p.addProperty(skinId);
p.addProperty(geometryId);
connections.addChild(p);
}
for (size_t i = 0; i < boneNodes.size(); ++i) {
const auto &boneNode = boneNodes[i];
{
FBXNode p("C");
p.addProperty("OO");
p.addProperty(deformerIds[1 + i]);
p.addProperty(skinId);
connections.addChild(p);
}
if (-1 == boneNode.parentIndex) {
FBXNode p("C");
p.addProperty("OO");
p.addProperty(limbNodeIds[1 + i]);
p.addProperty(armatureId);
connections.addChild(p);
} else {
FBXNode p("C");
p.addProperty("OO");
p.addProperty(limbNodeIds[1 + i]);
p.addProperty(limbNodeIds[1 + boneNode.parentIndex]);
connections.addChild(p);
}
}
for (size_t i = 0; i < limbNodeIds.size(); ++i) {
FBXNode p("C");
p.addProperty("OO");
p.addProperty(limbNodeIds[i]);
p.addProperty(deformerIds[i]);
connections.addChild(p);
}
for (size_t i = 0; i < nodeAttributeIds.size(); ++i) {
FBXNode p("C");
p.addProperty("OO");
p.addProperty(nodeAttributeIds[i]);
p.addProperty(limbNodeIds[i]);
connections.addChild(p);
}
{
FBXNode p("C");
p.addProperty("OO");
@ -1771,3 +2251,16 @@ bool FbxFileWriter::save()
m_fbxDocument.write(m_filename.toStdString());
return true;
}
std::vector<double> FbxFileWriter::matrixToVector(const QMatrix4x4 &matrix)
{
std::vector<double> vec;
for (size_t col = 0; col < 4; ++col) {
const auto &line = matrix.column(col);
vec.push_back(line.x());
vec.push_back(line.y());
vec.push_back(line.z());
vec.push_back(line.w());
}
return vec;
}

7
src/fbxfile.h
View File

@ -3,6 +3,7 @@
#include <fbxdocument.h>
#include <map>
#include <QString>
#include <QMatrix4x4>
#include "meshresultcontext.h"
#include "skeletondocument.h"
@ -11,6 +12,8 @@ class FbxFileWriter : public QObject
Q_OBJECT
public:
FbxFileWriter(MeshResultContext &resultContext,
const std::vector<AutoRiggerBone> *resultRigBones,
const std::map<int, AutoRiggerVertexWeights> *resultRigWeights,
const QString &filename);
bool save();
@ -22,14 +25,16 @@ private:
void createGlobalSettings();
void createDocuments();
void createReferences();
void createDefinitions();
void createDefinitions(size_t deformerCount);
void createTakes();
std::vector<double> matrixToVector(const QMatrix4x4 &matrix);
int64_t to64Id(const QUuid &uuid);
int64_t m_next64Id = 612150000;
QString m_filename;
fbx::FBXDocument m_fbxDocument;
std::map<QString, int64_t> m_uuidTo64Map;
static std::vector<double> m_identityMatrix;
};
#endif

4
src/gltffile.cpp
View File

@ -49,8 +49,8 @@ GltfFileWriter::GltfFileWriter(MeshResultContext &resultContext,
int bufferViewIndex = 0;
int bufferViewFromOffset;
JointNodeTree tailNodeTree(resultRigBones);
const auto &boneNodes = tailNodeTree.nodes();
JointNodeTree jointNodeTree(resultRigBones);
const auto &boneNodes = jointNodeTree.nodes();
m_json["asset"]["version"] = "2.0";
m_json["asset"]["generator"] = APP_NAME " " APP_HUMAN_VER;

2
src/skeletondocumentwindow.cpp
View File

@ -1241,7 +1241,7 @@ void SkeletonDocumentWindow::exportFbxResult()
}
QApplication::setOverrideCursor(Qt::WaitCursor);
MeshResultContext skeletonResult = m_document->currentPostProcessedResultContext();
FbxFileWriter fbxFileWriter(skeletonResult, filename);
FbxFileWriter fbxFileWriter(skeletonResult, m_document->resultRigBones(), m_document->resultRigWeights(), filename);
fbxFileWriter.save();
QApplication::restoreOverrideCursor();
}