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-rw-r--r--libs/assimp/code/PostProcessing/ArmaturePopulate.cpp263
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diff --git a/libs/assimp/code/PostProcessing/ArmaturePopulate.cpp b/libs/assimp/code/PostProcessing/ArmaturePopulate.cpp
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-/*
-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,
-with or without modification, are permitted provided that the
-following conditions are met:
-
-* Redistributions of source code must retain the above
-copyright notice, this list of conditions and the
-following disclaimer.
-
-* Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the
-following disclaimer in the documentation and/or other
-materials provided with the distribution.
-
-* Neither the name of the assimp team, nor the names of its
-contributors may be used to endorse or promote products
-derived from this software without specific prior
-written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------
-*/
-#include "ArmaturePopulate.h"
-
-#include <assimp/BaseImporter.h>
-#include <assimp/DefaultLogger.hpp>
-#include <assimp/postprocess.h>
-#include <assimp/scene.h>
-#include <iostream>
-
-namespace Assimp {
-
-/// The default class constructor.
-ArmaturePopulate::ArmaturePopulate() :
- BaseProcess() {
- // do nothing
-}
-
-/// The class destructor.
-ArmaturePopulate::~ArmaturePopulate() {
- // do nothing
-}
-
-bool ArmaturePopulate::IsActive(unsigned int pFlags) const {
- return (pFlags & aiProcess_PopulateArmatureData) != 0;
-}
-
-void ArmaturePopulate::SetupProperties(const Importer *) {
- // do nothing
-}
-
-void ArmaturePopulate::Execute(aiScene *out) {
-
- // Now convert all bone positions to the correct mOffsetMatrix
- std::vector<aiBone *> bones;
- std::vector<aiNode *> nodes;
- std::map<aiBone *, aiNode *> bone_stack;
- BuildBoneList(out->mRootNode, out->mRootNode, out, bones);
- BuildNodeList(out->mRootNode, nodes);
-
- BuildBoneStack(out->mRootNode, out->mRootNode, out, bones, bone_stack, nodes);
-
- ASSIMP_LOG_DEBUG("Bone stack size: ", bone_stack.size());
-
- for (std::pair<aiBone *, aiNode *> kvp : bone_stack) {
- aiBone *bone = kvp.first;
- aiNode *bone_node = kvp.second;
- ASSIMP_LOG_VERBOSE_DEBUG("active node lookup: ", bone->mName.C_Str());
- // lcl transform grab - done in generate_nodes :)
-
- // bone->mOffsetMatrix = bone_node->mTransformation;
- aiNode *armature = GetArmatureRoot(bone_node, bones);
-
- ai_assert(armature);
-
- // set up bone armature id
- bone->mArmature = armature;
-
- // set this bone node to be referenced properly
- ai_assert(bone_node);
- bone->mNode = bone_node;
- }
-}
-
-
-// Reprocess all nodes to calculate bone transforms properly based on the REAL
-// mOffsetMatrix not the local.
-// Before this would use mesh transforms which is wrong for bone transforms
-// Before this would work for simple character skeletons but not complex meshes
-// with multiple origins
-// Source: sketch fab log cutter fbx
-void ArmaturePopulate::BuildBoneList(aiNode *current_node,
- const aiNode *root_node,
- const aiScene *scene,
- std::vector<aiBone *> &bones) {
- ai_assert(scene);
- for (unsigned int nodeId = 0; nodeId < current_node->mNumChildren; ++nodeId) {
- aiNode *child = current_node->mChildren[nodeId];
- ai_assert(child);
-
- // check for bones
- for (unsigned int meshId = 0; meshId < child->mNumMeshes; ++meshId) {
- ai_assert(child->mMeshes);
- unsigned int mesh_index = child->mMeshes[meshId];
- aiMesh *mesh = scene->mMeshes[mesh_index];
- ai_assert(mesh);
-
- for (unsigned int boneId = 0; boneId < mesh->mNumBones; ++boneId) {
- aiBone *bone = mesh->mBones[boneId];
- ai_assert(nullptr != bone);
-
- // duplicate mehes exist with the same bones sometimes :)
- // so this must be detected
- if (std::find(bones.begin(), bones.end(), bone) == bones.end()) {
- // add the element once
- bones.emplace_back(bone);
- }
- }
-
- // find mesh and get bones
- // then do recursive lookup for bones in root node hierarchy
- }
-
- BuildBoneList(child, root_node, scene, bones);
- }
-}
-
-// Prepare flat node list which can be used for non recursive lookups later
-void ArmaturePopulate::BuildNodeList(const aiNode *current_node,
- std::vector<aiNode *> &nodes) {
- ai_assert(nullptr != current_node);
-
- for (unsigned int nodeId = 0; nodeId < current_node->mNumChildren; ++nodeId) {
- aiNode *child = current_node->mChildren[nodeId];
- ai_assert(child);
-
- if (child->mNumMeshes == 0) {
- nodes.emplace_back(child);
- }
-
- BuildNodeList(child, nodes);
- }
-}
-
-// A bone stack allows us to have multiple armatures, with the same bone names
-// A bone stack allows us also to retrieve bones true transform even with
-// duplicate names :)
-void ArmaturePopulate::BuildBoneStack(aiNode *,
- const aiNode *root_node,
- const aiScene*,
- const std::vector<aiBone *> &bones,
- std::map<aiBone *, aiNode *> &bone_stack,
- std::vector<aiNode *> &node_stack) {
- if (node_stack.empty()) {
- return;
- }
- ai_assert(nullptr != root_node);
-
- for (aiBone *bone : bones) {
- ai_assert(bone);
- aiNode *node = GetNodeFromStack(bone->mName, node_stack);
- if (node == nullptr) {
- node_stack.clear();
- BuildNodeList(root_node, node_stack);
- ASSIMP_LOG_VERBOSE_DEBUG("Resetting bone stack: nullptr element ", bone->mName.C_Str());
-
- node = GetNodeFromStack(bone->mName, node_stack);
-
- if (nullptr == node) {
- ASSIMP_LOG_ERROR("serious import issue node for bone was not detected");
- continue;
- }
- }
-
- ASSIMP_LOG_VERBOSE_DEBUG("Successfully added bone[", bone->mName.C_Str(), "] to stack and bone node is: ", node->mName.C_Str());
-
- bone_stack.insert(std::pair<aiBone *, aiNode *>(bone, node));
- }
-}
-
-// Returns the armature root node
-// This is required to be detected for a bone initially, it will recurse up
-// until it cannot find another bone and return the node No known failure
-// points. (yet)
-aiNode *ArmaturePopulate::GetArmatureRoot(aiNode *bone_node,
- std::vector<aiBone *> &bone_list) {
- while (nullptr != bone_node) {
- if (!IsBoneNode(bone_node->mName, bone_list)) {
- ASSIMP_LOG_VERBOSE_DEBUG("GetArmatureRoot() Found valid armature: ", bone_node->mName.C_Str());
- return bone_node;
- }
-
- bone_node = bone_node->mParent;
- }
-
- ASSIMP_LOG_ERROR("GetArmatureRoot() can't find armature!");
-
- return nullptr;
-}
-
-// Simple IsBoneNode check if this could be a bone
-bool ArmaturePopulate::IsBoneNode(const aiString &bone_name,
- std::vector<aiBone *> &bones) {
- for (aiBone *bone : bones) {
- if (bone->mName == bone_name) {
- return true;
- }
- }
-
- return false;
-}
-
-// Pop this node by name from the stack if found
-// Used in multiple armature situations with duplicate node / bone names
-// Known flaw: cannot have nodes with bone names, will be fixed in later release
-// (serious to be fixed) Known flaw: nodes which have more than one bone could
-// be prematurely dropped from stack
-aiNode *ArmaturePopulate::GetNodeFromStack(const aiString &node_name,
- std::vector<aiNode *> &nodes) {
- std::vector<aiNode *>::iterator iter;
- aiNode *found = nullptr;
- for (iter = nodes.begin(); iter < nodes.end(); ++iter) {
- aiNode *element = *iter;
- ai_assert(nullptr != element);
- // node valid and node name matches
- if (element->mName == node_name) {
- found = element;
- break;
- }
- }
-
- if (found != nullptr) {
- ASSIMP_LOG_INFO("Removed node from stack: ", found->mName.C_Str());
- // now pop the element from the node list
- nodes.erase(iter);
-
- return found;
- }
-
- // unique names can cause this problem
- ASSIMP_LOG_ERROR("[Serious] GetNodeFromStack() can't find node from stack!");
-
- return nullptr;
-}
-
-} // Namespace Assimp
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-24 13:15:23 +0000