Miscellaneous mesh processing functions. More...

Detailed Description

Miscellaneous mesh processing functions.

Enumerations
enum class	FillType { None = 0 , Bottom , Top }
	Filling type for the label map computation. More...

Functions
bool	invertNormals (Mesh &mesh)
	Invert the vertex normals of the Mesh. Returns false if mesh has no vertex normals.
void	burnInTransformation (Mesh &mesh, const mat4 &transformation)
	Applies the transformation to all mesh vertices.
std::unique_ptr< TypedImage< unsigned char > >	computeLabelMap (const Mesh &mesh, const vec3 &resolution, unsigned int margin=10, unsigned int dir=2, FillType fill=FillType::None, vec3i *targetDim=nullptr, const std::optional< mat4 > &transformation=std::nullopt)
	Compute label map volume from the mesh, representing the inside of a closed surface.
void	erodeBoundary (Mesh &mesh, int layers)
	Removes mesh boundary faces (faces which have at least one boundary edge).
bool	transferMeshFaceLabels (const Mesh &meshSrc, Mesh &meshDst)
	Transfer face labels from source mesh to destination mesh by propagating the label of its nearest neighbor.

Enumeration Type Documentation

strong

Filling type for the label map computation.

Enumerator
None	no closing
Bottom	close label map in the bottom of axis
Top	close label map on the top of axis

void ImFusion::MeshProcessing::Misc::burnInTransformation	(	Mesh &	mesh,
		const mat4 &	transformation )

Applies the transformation to all mesh vertices.

Transformation is also applied to vertex normals, halfedge normals and face normals if present

Parameters

[in,out]	mesh	Mesh
[in]	transformation	The transformation matrix

std::unique_ptr< TypedImage< unsigned char > > ImFusion::MeshProcessing::Misc::computeLabelMap	(	const Mesh &	mesh,
		const vec3 &	resolution,
		unsigned int	margin = 10,
		unsigned int	dir = 2,
		FillType	fill = FillType::None,
		vec3i *	targetDim = nullptr,
		const std::optional< mat4 > &	transformation = std::nullopt )

Compute label map volume from the mesh, representing the inside of a closed surface.

Warning: The mesh transformation matrix is ignored here. You can, however, supply any transformation matrix (including the meshes own one) as an optional argument.

Note: It is expected that either the mesh is centered at the origin or transformed accordingly by transformation. If this is not the case it can not be assured that the label map fully covers the mesh.

Parameters

[in,out]	mesh	Mesh
[in]	resolution	Resolution of a single voxel
[in]	margin	Additional voxels added at the volume boundaries (will be ignored if targetDim is given)
[in]	dir	Axis along which ray-mesh intersection should be performed (0 is x-axis, 1 is y-axis, 2 is z-axis)
[in]	fill	Specifies whether the label map should be manually closed in case of an open mesh (optional, default is 'None')
[in]	targetDim	Optional target dimension of the computed volume. If not provided, the dimension will be computed as [mesh extent] * [resolution] + [margin]
[in]	transformation	An optional transformation to be applied to the mesh (default none).

void ImFusion::MeshProcessing::Misc::erodeBoundary	(	Mesh &	mesh,
		int	layers )

Removes mesh boundary faces (faces which have at least one boundary edge).

Parameters

[in,out]	mesh	mesh
	layers	number of layers of boundary faces to be removed

Note: Consider removing duplicated vertices by calling Cleaning::mergeCloseVertices before this