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This commit is contained in:
Kim Kulling
2022-04-05 20:07:22 +02:00
parent 7aa87a9765
commit e5747dad9b
8 changed files with 182 additions and 69 deletions
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16
code/AssetLib/FBX/FBXConverter.cpp
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@@ -1435,6 +1435,16 @@ unsigned int FBXConverter::ConvertMeshMultiMaterial(const MeshGeometry &mesh, co
return static_cast<unsigned int>(mMeshes.size() - 1);
}
void ConvertWeightsToSkeleton(const MeshGeometry &geo, const aiMatrix4x4 &absolute_transform, aiNode *parent, unsigned int materialIndex,
std::vector<unsigned int> *outputVertStartIndices) {
ai_assert(geo.DeformerSkin() != nullptr);
const Skin &sk = *geo.DeformerSkin();
for (auto &cluster : sk.Clusters()) {
cluster->Transform();
}
}
void FBXConverter::ConvertWeights(aiMesh *out, const MeshGeometry &geo,
const aiMatrix4x4 &absolute_transform,
aiNode *parent, unsigned int materialIndex,
@@ -1529,12 +1539,6 @@ void FBXConverter::ConvertWeights(aiMesh *out, const MeshGeometry &geo,
}
}
const aiNode *GetNodeByName(aiNode *current_node) {
aiNode *iter = current_node;
//printf("Child count: %d", iter->mNumChildren);
return iter;
}
void FBXConverter::ConvertCluster(std::vector<aiBone *> &local_mesh_bones, const Cluster *cl,
std::vector<size_t> &out_indices, std::vector<size_t> &index_out_indices,
std::vector<size_t> &count_out_indices, const aiMatrix4x4 &absolute_transform,

6
code/AssetLib/FBX/FBXImportSettings.h
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@@ -60,6 +60,7 @@ struct ImportSettings {
readLights(true),
readAnimations(true),
readWeights(true),
useSkeleton(false),
preservePivots(true),
optimizeEmptyAnimationCurves(true),
useLegacyEmbeddedTextureNaming(false),
@@ -112,6 +113,11 @@ struct ImportSettings {
* Default value is true. */
bool readWeights;
/** will convert all animation data into a skeleton (experimental)
* Default value is false.
*/
bool useSkeleton;
/** preserve transformation pivots and offsets. Since these can
* not directly be represented in assimp, additional dummy
* nodes will be generated. Note that settings this to false

47
code/AssetLib/FBX/FBXImporter.cpp
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@@ -90,12 +90,9 @@ static const aiImporterDesc desc = {
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by #Importer
FBXImporter::FBXImporter() {
}
// ------------------------------------------------------------------------------------------------
// Destructor, private as well
FBXImporter::~FBXImporter() {
FBXImporter::FBXImporter() :
mSettings() {
// empty
}
// ------------------------------------------------------------------------------------------------
@@ -115,20 +112,21 @@ const aiImporterDesc *FBXImporter::GetInfo() const {
// ------------------------------------------------------------------------------------------------
// Setup configuration properties for the loader
void FBXImporter::SetupProperties(const Importer *pImp) {
settings.readAllLayers = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_GEOMETRY_LAYERS, true);
settings.readAllMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_MATERIALS, false);
settings.readMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_MATERIALS, true);
settings.readTextures = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_TEXTURES, true);
settings.readCameras = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_CAMERAS, true);
settings.readLights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_LIGHTS, true);
settings.readAnimations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ANIMATIONS, true);
settings.readWeights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_WEIGHTS, true);
settings.strictMode = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_STRICT_MODE, false);
settings.preservePivots = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_PRESERVE_PIVOTS, true);
settings.optimizeEmptyAnimationCurves = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_OPTIMIZE_EMPTY_ANIMATION_CURVES, true);
settings.useLegacyEmbeddedTextureNaming = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_EMBEDDED_TEXTURES_LEGACY_NAMING, false);
settings.removeEmptyBones = pImp->GetPropertyBool(AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES, true);
settings.convertToMeters = pImp->GetPropertyBool(AI_CONFIG_FBX_CONVERT_TO_M, false);
mSettings.readAllLayers = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_GEOMETRY_LAYERS, true);
mSettings.readAllMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_MATERIALS, false);
mSettings.readMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_MATERIALS, true);
mSettings.readTextures = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_TEXTURES, true);
mSettings.readCameras = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_CAMERAS, true);
mSettings.readLights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_LIGHTS, true);
mSettings.readAnimations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ANIMATIONS, true);
mSettings.readWeights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_WEIGHTS, true);
mSettings.strictMode = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_STRICT_MODE, false);
mSettings.preservePivots = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_PRESERVE_PIVOTS, true);
mSettings.optimizeEmptyAnimationCurves = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_OPTIMIZE_EMPTY_ANIMATION_CURVES, true);
mSettings.useLegacyEmbeddedTextureNaming = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_EMBEDDED_TEXTURES_LEGACY_NAMING, false);
mSettings.removeEmptyBones = pImp->GetPropertyBool(AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES, true);
mSettings.convertToMeters = pImp->GetPropertyBool(AI_CONFIG_FBX_CONVERT_TO_M, false);
mSettings.useSkeleton = pImp->GetPropertyBool(AI_CONFIG_FBX_USE_SKELETON_BONE_CONTAINER, false);
}
// ------------------------------------------------------------------------------------------------
@@ -155,7 +153,7 @@ void FBXImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSy
contents[contents.size() - 1] = 0;
const char *const begin = &*contents.begin();
// broadphase tokenizing pass in which we identify the core
// broad-phase tokenized pass in which we identify the core
// syntax elements of FBX (brackets, commas, key:value mappings)
TokenList tokens;
try {
@@ -173,15 +171,14 @@ void FBXImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSy
Parser parser(tokens, is_binary);
// take the raw parse-tree and convert it to a FBX DOM
Document doc(parser, settings);
Document doc(parser, mSettings);
// convert the FBX DOM to aiScene
ConvertToAssimpScene(pScene, doc, settings.removeEmptyBones);
ConvertToAssimpScene(pScene, doc, mSettings.removeEmptyBones);
// size relative to cm
float size_relative_to_cm = doc.GlobalSettings().UnitScaleFactor();
if (size_relative_to_cm == 0.0)
{
if (size_relative_to_cm == 0.0) {
// BaseImporter later asserts that fileScale is non-zero.
ThrowException("The UnitScaleFactor must be non-zero");
}

13
code/AssetLib/FBX/FBXImporter.h
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@@ -69,13 +69,14 @@ typedef class basic_formatter<char, std::char_traits<char>, std::allocator<char>
// -------------------------------------------------------------------------------------------
class FBXImporter : public BaseImporter, public LogFunctions<FBXImporter> {
public:
/// @brief The class constructor.
FBXImporter();
~FBXImporter() override;
// --------------------
bool CanRead(const std::string &pFile,
IOSystem *pIOHandler,
bool checkSig) const override;
/// @brief The class destructor, default implementation.
~FBXImporter() override = default;
/// @brief Will check the file for readability.
bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const override;
protected:
// --------------------
@@ -90,7 +91,7 @@ protected:
IOSystem *pIOHandler) override;
private:
FBX::ImportSettings settings;
FBX::ImportSettings mSettings;
}; // !class FBXImporter
} // end of namespace Assimp

14
code/Common/SkeletonMeshBuilder.cpp
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@@ -4,7 +4,6 @@ Open Asset Import Library (assimp)
Copyright (c) 2006-2022, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
@@ -97,13 +96,14 @@ void SkeletonMeshBuilder::CreateGeometry(const aiNode *pNode) {
const aiMatrix4x4 &childTransform = pNode->mChildren[a]->mTransformation;
aiVector3D childpos(childTransform.a4, childTransform.b4, childTransform.c4);
ai_real distanceToChild = childpos.Length();
if (distanceToChild < 0.0001)
if (distanceToChild < ai_epsilon) {
continue;
}
aiVector3D up = aiVector3D(childpos).Normalize();
aiVector3D orth(1.0, 0.0, 0.0);
if (std::fabs(orth * up) > 0.99)
if (std::fabs(orth * up) > 0.99) {
orth.Set(0.0, 1.0, 0.0);
}
aiVector3D front = (up ^ orth).Normalize();
aiVector3D side = (front ^ up).Normalize();
@@ -183,8 +183,9 @@ void SkeletonMeshBuilder::CreateGeometry(const aiNode *pNode) {
// add all the vertices to the bone's influences
bone->mNumWeights = numVertices;
bone->mWeights = new aiVertexWeight[numVertices];
for (unsigned int a = 0; a < numVertices; a++)
for (unsigned int a = 0; a < numVertices; ++a) {
bone->mWeights[a] = aiVertexWeight(vertexStartIndex + a, 1.0);
}
// HACK: (thom) transform all vertices to the bone's local space. Should be done before adding
// them to the array, but I'm tired now and I'm annoyed.
@@ -194,8 +195,9 @@ void SkeletonMeshBuilder::CreateGeometry(const aiNode *pNode) {
}
// and finally recurse into the children list
for (unsigned int a = 0; a < pNode->mNumChildren; a++)
for (unsigned int a = 0; a < pNode->mNumChildren; ++a) {
CreateGeometry(pNode->mChildren[a]);
}
}
// ------------------------------------------------------------------------------------------------