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90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <SceneAPI/FbxSceneBuilder/Importers/AssImpImporterUtilities.h>
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#include <AzCore/Debug/Trace.h>
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#include <AzCore/StringFunc/StringFunc.h>
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#include <assimp/scene.h>
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namespace AZ
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{
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namespace SceneAPI
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{
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namespace FbxSceneBuilder
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{
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bool IsSkinnedMesh(const aiNode& node, const aiScene& scene)
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{
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unsigned boneCount = 0;
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for (unsigned mesh = 0; mesh < node.mNumMeshes; ++mesh)
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{
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if (scene.mMeshes[node.mMeshes[mesh]]->HasBones())
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{
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++boneCount;
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}
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}
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if (boneCount > 1 && boneCount != node.mNumMeshes)
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{
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AZ_Error("AssImpImporterUtilities", false, "Node has %d meshes but only %d are skinned. "
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"This is unexpected and may result in errors", node.mNumMeshes, boneCount);
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}
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return boneCount > 0;
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}
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bool IsPivotNode(const aiString& nodeName, size_t* pos)
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{
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AZStd::string_view name(nodeName.C_Str(), nodeName.length);
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size_t myPos;
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if (!pos)
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{
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pos = &myPos;
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}
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*pos = AZ::StringFunc::Find(name, PivotNodeMarker);
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return *pos != name.npos;
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}
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void SplitPivotNodeName(const aiString& nodeName, size_t pivotPos, AZStd::string_view& baseNodeName, AZStd::string_view& pivotType)
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{
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AZStd::string_view nodeNameView(nodeName.data, nodeName.length);
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baseNodeName = AZStd::string_view(nodeNameView.substr(0, pivotPos));
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pivotType = AZStd::string_view(nodeNameView.substr(pivotPos + sizeof PivotNodeMarker - 1));
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}
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aiMatrix4x4 GetConcatenatedLocalTransform(const aiNode* currentNode)
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{
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const aiNode* parent = currentNode->mParent;
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aiMatrix4x4 combinedTransform = currentNode->mTransformation;
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while (parent)
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{
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size_t pos;
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if (IsPivotNode(parent->mName, &pos))
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{
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combinedTransform = parent->mTransformation * combinedTransform;
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parent = parent->mParent;
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}
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else
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{
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break;
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}
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}
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return combinedTransform;
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}
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} // namespace FbxSceneBuilder
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} // namespace SceneAPI
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} // namespace AZ
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