# Wrapping Deformable Mesh

**URL:** https://discourse.itk.org/t/wrapping-deformable-mesh/5823
**Category:** Engineering
**Created:** [March 23, 2023, 6:44am UTC](https://discourse.itk.org/t/wrapping-deformable-mesh/5823 "2023-03-23T06:44:22Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![zhuangming.shen](https://discourse.itk.org/letter_avatar_proxy/v4/letter/z/4af34b/32.png) [@zhuangming.shen](https://discourse.itk.org/u/zhuangming.shen)
#### Post date: [March 23, 2023, 6:44am UTC](https://discourse.itk.org/t/wrapping-deformable-mesh/5823/1 "2023-03-23T06:44:22Z")

</div>

Hi, I’d like to use python supported itkDeformableSimplexMesh3DGradientConstraintForceFilter, itkDeformableSimplexMesh3DFilter, itkDeformableSimplexMesh3DBalloonForceFilter in ITK 5.2.1. I try to add CMakeLists.txt and warp files. When I build the source code, errors appear. Are my configurations wrong? Thanks in advance.

![image](https://discourse.itk.org/uploads/default/original/2X/3/31829bdcd8f3cc55a1ec67d00715e7cbed131f7d.png)

 ![image](https://discourse.itk.org/uploads/default/original/2X/c/cbcd59b87afa063a321814f01bde773c53bc8fee.png)

 ![image](https://discourse.itk.org/uploads/default/original/2X/f/fa25fc5182bb205c8c83a3b5f5a6c6717c4882e8.png)

 ![image](https://discourse.itk.org/uploads/default/original/2X/3/34b0a60f90e3fa6a9d92a28e2ef8b149e979f515.png)

 ![image](https://discourse.itk.org/uploads/default/original/2X/a/a0197e69decddd9731aca0d2180f9862b2b3fcee.png)

---

<div class="post-metadata">

### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [March 23, 2023, 4:59pm UTC](https://discourse.itk.org/t/wrapping-deformable-mesh/5823/2 "2023-03-23T16:59:44Z")

</div>

Probable reason is that [MeshToMeshFilter](https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Core/Mesh/wrapping/itkMeshToMeshFilter.wrap) is not instantiated for `SimplexMesh`. You should add extra instantiations for `SimplexMesh`, similar how extra instantiations for `ImageToImageFilter` are done in [CurvilinearArraySpecialCoordinatesImageFilters](https://github.com/KitwareMedical/ITKUltrasound/blob/629076dea4b89da49dd665e036df30b74b241ead/wrapping/itkCurvilinearArraySpecialCoordinatesImageFilters.wrap#L21-L51).