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Add being able to set origin of mesh to the local mesh origin. fix centering several meshes.

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This commit is contained in:
Chandler Cox
2023-10-25 09:57:51 -05:00
parent 806590d1c3
commit 73694cba6c
5 changed files with 101 additions and 2 deletions
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59
Source/Engine/Tools/ModelTool/ModelTool.Assimp.cpp
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@@ -1,5 +1,6 @@
// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
#include "OpenFBX/ofbx.h"
#if COMPILE_WITH_MODEL_TOOL && USE_ASSIMP
#include "ModelTool.h"
@@ -648,6 +649,64 @@ bool ImportMesh(int32 i, ImportedModelData& result, AssimpImporterData& data, St
result.LODs.Resize(lodIndex + 1);
result.LODs[lodIndex].Meshes.Add(meshData);
}
auto root = data.Scene->mRootNode;
Array<Transform> points;
if (root->mNumChildren == 0)
{
//auto translation = ToMatrix(root->mTransformation).GetTranslation();
//points.Add(Vector3(translation.X, translation.Y, translation.Z));
aiQuaternion aiQuat;
aiVector3D aiPos;
aiVector3D aiScale;
root->mTransformation.Decompose(aiScale, aiQuat, aiPos);
auto quat = ToQuaternion(aiQuat);
auto pos = ToFloat3(aiPos);
auto scale = ToFloat3(aiScale);
Transform trans = Transform(pos, quat, scale);
points.Add(trans);
}
else
{
for (unsigned int j = 0; j < root->mNumChildren; j++)
{
//auto translation = ToMatrix(root->mChildren[j]->mTransformation).GetTranslation();
//points.Add(Vector3(translation.X, translation.Y, -translation.Z));
aiQuaternion aiQuat;
aiVector3D aiPos;
aiVector3D aiScale;
root->mChildren[j]->mTransformation.Decompose(aiScale, aiQuat, aiPos);
auto quat = ToQuaternion(aiQuat);
auto pos = ToFloat3(aiPos);
auto scale = ToFloat3(aiScale);
Transform trans = Transform(pos, quat, scale);
points.Add(trans);
}
}
Float3 translation = Float3::Zero;
Float3 scale = Float3::Zero;
Quaternion orientation = Quaternion::Identity;
for (auto point : points)
{
translation += point.Translation;
scale += point.Scale;
orientation *= point.Orientation;
}
if (points.Count() > 0)
{
meshData->OriginTranslation = translation / (float)points.Count();
meshData->OriginOrientation = Quaternion::Invert(orientation);
meshData->Scaling = scale / (float)points.Count();
}
else
{
meshData->OriginTranslation = translation;
meshData->OriginOrientation = Quaternion::Invert(orientation);
meshData->Scaling = Float3(1);
}
return false;
}