MRMesh.h File Reference

#include "MRMeshFwd.h"
#include "MRAffineXf.h"
#include "MRBox.h"
#include "MRId.h"
#include "MRMeshTopology.h"

Go to the source code of this file.

Classes
struct	MRMeshAddMeshPartParameters
	optional parameters for mrMeshAddMeshPart More...

Typedefs
typedef struct MRMeshAddMeshPartParameters	MRMeshAddMeshPartParameters
	optional parameters for mrMeshAddMeshPart

Functions
MR_EXTERN_C_BEGIN MRMESHC_API MRMesh *	mrMeshCopy (const MRMesh *mesh)
	creates a copy of a Mesh object
MRMESHC_API MRMesh *	mrMeshFromTriangles (const MRVector3f *vertexCoordinates, size_t vertexCoordinatesNum, const MRThreeVertIds *t, size_t tNum)
	constructs a mesh from vertex coordinates and a set of triangles with given ids
MRMESHC_API MRMesh *	mrMeshFromTrianglesDuplicatingNonManifoldVertices (const MRVector3f *vertexCoordinates, size_t vertexCoordinatesNum, const MRThreeVertIds *t, size_t tNum)
MRMESHC_API MRMesh *	mrMeshNewFromPointTriples (const MRTriangle3f *posTriangles, size_t posTrianglesNum, bool duplicateNonManifoldVertices)
MRMESHC_API const MRVector3f *	mrMeshPoints (const MRMesh *mesh)
	gets read-only access to the mesh vertex coordinates
MRMESHC_API MRVector3f *	mrMeshPointsRef (MRMesh *mesh)
	gets read-write access to the mesh vertex coordinates
MRMESHC_API size_t	mrMeshPointsNum (const MRMesh *mesh)
	gets count of the mesh vertex coordinates
MRMESHC_API const MRMeshTopology *	mrMeshTopology (const MRMesh *mesh)
	gets read-only access to the mesh topology object
MRMESHC_API MRMeshTopology *	mrMeshTopologyRef (MRMesh *mesh)
	gets read-write access to the mesh topology object
MRMESHC_API MRBox3f	mrMeshComputeBoundingBox (const MRMesh *mesh, const MRAffineXf3f *toWorld)
MRMESHC_API void	mrMeshTransform (MRMesh *mesh, const MRAffineXf3f *xf, const MRVertBitSet *region)
MRMESHC_API MRVector3f	mrMeshHoleDirArea (const MRMesh *mesh, MREdgeId e)
MRMESHC_API double	mrMeshArea (const MRMesh *mesh, const MRFaceBitSet *region)
	computes the area of given face-region (or whole mesh if region is null)
MRMESHC_API float	mrMeshEdgeLength (const MRMesh *mesh, MRUndirectedEdgeId e)
	returns Euclidean length of the edge
MRMESHC_API float	mrMeshEdgeLengthSq (const MRMesh *mesh, MRUndirectedEdgeId e)
	returns squared Euclidean length of the edge (faster to compute than length)
MRMESHC_API void	mrMeshDeleteFaces (MRMesh *mesh, const MRFaceBitSet *fs, const MRUndirectedEdgeBitSet *keepEdges)
	deletes multiple given faces, also deletes adjacent edges and vertices if they were not shared by remaining faces and not in
MRMESHC_API void	mrMeshAddMeshPart (MRMesh *mesh, const MRMeshPart *meshPart, const MRMeshAddMeshPartParameters *params)
	appends mesh (from) in addition to this mesh: creates new edges, faces, verts and points
MRMESHC_API void	mrMeshPack (MRMesh *mesh, bool rearrangeTriangles)
	tightly packs all arrays eliminating lone edges and invalid face, verts and points
MRMESHC_API void	mrMeshPackOptimally (MRMesh *mesh, bool preserveAABBTree)
MRMESHC_API double	mrMeshVolume (const MRMesh *mesh, const MRFaceBitSet *region)
MRMESHC_API void	mrMeshFree (MRMesh *mesh)
	deallocates a Mesh object
MRMESHC_API MRTriangulation *	mrMeshGetTriangulation (const MRMesh *mesh)
MRMESHC_API MREdgePath *	mrMeshFindHoleRepresentiveEdges (const MRMesh *mesh)
MRMESHC_API void	mrMeshInvalidateCaches (MRMesh *mesh, bool pointsChanged)
MRMESHC_API void	mrMeshAddMesh (MRMesh *mesh, const MRMesh *from)
	appends another mesh as separate connected component(s) to this
MRMESHC_API MRVector3f	mrMeshNormalFromVert (const MRMesh *mesh, MRVertId v)
	computes normal in a vertex using sum of directed areas of neighboring triangles

Typedef Documentation

MRMeshAddMeshPartParameters

typedef struct MRMeshAddMeshPartParameters MRMeshAddMeshPartParameters

optional parameters for mrMeshAddMeshPart

Function Documentation

mrMeshAddMesh()

MRMESHC_API void mrMeshAddMesh	(	MRMesh *	mesh,
		const MRMesh *	from )

appends another mesh as separate connected component(s) to this

mrMeshAddMeshPart()

MRMESHC_API void mrMeshAddMeshPart	(	MRMesh *	mesh,
		const MRMeshPart *	meshPart,
		const MRMeshAddMeshPartParameters *	params )

appends mesh (from) in addition to this mesh: creates new edges, faces, verts and points

mrMeshArea()

MRMESHC_API double mrMeshArea	(	const MRMesh *	mesh,
		const MRFaceBitSet *	region )

computes the area of given face-region (or whole mesh if region is null)

mrMeshComputeBoundingBox()

MRMESHC_API MRBox3f mrMeshComputeBoundingBox	(	const MRMesh *	mesh,
		const MRAffineXf3f *	toWorld )

passes through all valid vertices and finds the minimal bounding box containing all of them; if toWorld transformation is given then returns minimal bounding box in world space

mrMeshCopy()

MR_EXTERN_C_BEGIN MRMESHC_API MRMesh * mrMeshCopy

(

const MRMesh *

mesh

)

creates a copy of a Mesh object

mrMeshDeleteFaces()

MRMESHC_API void mrMeshDeleteFaces	(	MRMesh *	mesh,
		const MRFaceBitSet *	fs,
		const MRUndirectedEdgeBitSet *	keepEdges )

deletes multiple given faces, also deletes adjacent edges and vertices if they were not shared by remaining faces and not in

Parameters

keepEdges

mrMeshEdgeLength()

MRMESHC_API float mrMeshEdgeLength	(	const MRMesh *	mesh,
		MRUndirectedEdgeId	e )

returns Euclidean length of the edge

mrMeshEdgeLengthSq()

MRMESHC_API float mrMeshEdgeLengthSq	(	const MRMesh *	mesh,
		MRUndirectedEdgeId	e )

returns squared Euclidean length of the edge (faster to compute than length)

mrMeshFindHoleRepresentiveEdges()

MRMESHC_API MREdgePath * mrMeshFindHoleRepresentiveEdges

(

const MRMesh *

mesh

)

returns one edge with no valid left face for every boundary in the mesh NOTE: this is a shortcut for mrMeshTopologyFindHoleRepresentiveEdges( mrMeshTopology( mesh ) )

mrMeshFree()

MRMESHC_API void mrMeshFree

(

MRMesh *

mesh

)

deallocates a Mesh object

mrMeshFromTriangles()

MRMESHC_API MRMesh * mrMeshFromTriangles	(	const MRVector3f *	vertexCoordinates,
		size_t	vertexCoordinatesNum,
		const MRThreeVertIds *	t,
		size_t	tNum )

constructs a mesh from vertex coordinates and a set of triangles with given ids

mrMeshFromTrianglesDuplicatingNonManifoldVertices()

MRMESHC_API MRMesh * mrMeshFromTrianglesDuplicatingNonManifoldVertices	(	const MRVector3f *	vertexCoordinates,
		size_t	vertexCoordinatesNum,
		const MRThreeVertIds *	t,
		size_t	tNum )

constructs a mesh from vertex coordinates and a set of triangles with given ids; unlike simple mrMeshFromTriangles it tries to resolve non-manifold vertices by creating duplicate vertices

mrMeshGetTriangulation()

MRMESHC_API MRTriangulation * mrMeshGetTriangulation

(

const MRMesh *

mesh

)

returns three vertex ids for valid triangles (which can be accessed by FaceId), vertex ids for invalid triangles are undefined, and shall not be read NOTE: this is a shortcut for mrMeshTopologyGetTriangulation( mrMeshTopology( mesh ) )

mrMeshHoleDirArea()

MRMESHC_API MRVector3f mrMeshHoleDirArea	(	const MRMesh *	mesh,
		MREdgeId	e )

computes directed area of the hole specified by one of its edges with no valid left face (left is hole); if the hole is planar then returned vector is orthogonal to the plane pointing outside and its magnitude is equal to hole area

mrMeshInvalidateCaches()

MRMESHC_API void mrMeshInvalidateCaches	(	MRMesh *	mesh,
		bool	pointsChanged )

invalidates caches (aabb-trees) after any change in mesh geometry or topology

Parameters

pointsChanged

specifies whether points have changed (otherwise only topology has changed)

mrMeshNewFromPointTriples()

MRMESHC_API MRMesh * mrMeshNewFromPointTriples	(	const MRTriangle3f *	posTriangles,
		size_t	posTrianglesNum,
		bool	duplicateNonManifoldVertices )

constructs a mesh from point triples;

Parameters

duplicateNonManifoldVertices	= false, all coinciding points are given the same VertId in the result;
duplicateNonManifoldVertices	= true, it tries to avoid non-manifold vertices by creating duplicate vertices with same coordinates

mrMeshNormalFromVert()

MRMESHC_API MRVector3f mrMeshNormalFromVert	(	const MRMesh *	mesh,
		MRVertId	v )

computes normal in a vertex using sum of directed areas of neighboring triangles

mrMeshPack()

MRMESHC_API void mrMeshPack	(	MRMesh *	mesh,
		bool	rearrangeTriangles )

tightly packs all arrays eliminating lone edges and invalid face, verts and points

mrMeshPackOptimally()

MRMESHC_API void mrMeshPackOptimally	(	MRMesh *	mesh,
		bool	preserveAABBTree )

packs tightly and rearranges vertices, triangles and edges to put close in space elements in close indices

Parameters

preserveAABBTree

whether to keep valid mesh's AABB tree after return (it will take longer to compute and it will occupy more memory)

mrMeshPoints()

MRMESHC_API const MRVector3f * mrMeshPoints

(

const MRMesh *

mesh

)

gets read-only access to the mesh vertex coordinates

mrMeshPointsNum()

MRMESHC_API size_t mrMeshPointsNum

(

const MRMesh *

mesh

)

gets count of the mesh vertex coordinates

mrMeshPointsRef()

MRMESHC_API MRVector3f * mrMeshPointsRef

(

MRMesh *

mesh

)

gets read-write access to the mesh vertex coordinates

mrMeshTopology()

MRMESHC_API const MRMeshTopology * mrMeshTopology

(

const MRMesh *

mesh

)

gets read-only access to the mesh topology object

mrMeshTopologyRef()

MRMESHC_API MRMeshTopology * mrMeshTopologyRef

(

MRMesh *

mesh

)

gets read-write access to the mesh topology object

mrMeshTransform()

MRMESHC_API void mrMeshTransform	(	MRMesh *	mesh,
		const MRAffineXf3f *	xf,
		const MRVertBitSet *	region )

applies given transformation to specified vertices if region is NULL, all valid mesh vertices are used

mrMeshVolume()

MRMESHC_API double mrMeshVolume	(	const MRMesh *	mesh,
		const MRFaceBitSet *	region )

returns volume of closed mesh region, if region is not closed DBL_MAX is returned if region is NULL - whole mesh is region