Basic operators for manipulating Woolz geometric models. These can be either planar graphs or 3D surfaces, with the surfaces being either manifold or non-manifold. More...

Functions
WlzErrorNum	WlzGMModelAddResCb (WlzGMModel model, WlzGMCbFn fn, void data)
	Add a resource allocation callback to the models resources. More...

void	WlzGMModelRemResCb (WlzGMModel model, WlzGMCbFn fn, void data)
	Removes a resource allocation callback from the models resources. Both the callback function and callback data must have the same values as when the callback was added since they are used to find the corresponding callback entry. More...

WlzGMModel *	WlzGMModelNew (WlzGMModelType modType, int blkSz, int vHTSz, WlzErrorNum *dstErr)
	Creates an empty non-manifold geometry model. More...

WlzGMShell *	WlzGMModelNewS (WlzGMModel model, WlzErrorNum dstErr)
	Creates an empty shell with a shell geometry element for the model. More...

WlzGMFace *	WlzGMModelNewF (WlzGMModel model, WlzErrorNum dstErr)
	Creates an empty face. More...

WlzGMLoopT *	WlzGMModelNewLT (WlzGMModel model, WlzErrorNum dstErr)
	Creates a loop topology element. More...

WlzGMEdge *	WlzGMModelNewE (WlzGMModel model, WlzErrorNum dstErr)
	Creates a new edge. The edge geometry element only has it's index set to a meaningful value. More...

WlzGMEdgeT *	WlzGMModelNewET (WlzGMModel model, WlzErrorNum dstErr)
	Creates a new edge topology element. More...

WlzGMVertex *	WlzGMModelNewV (WlzGMModel model, WlzErrorNum dstErr)
	Creates a new vertex and a vertex geometry element. The vertex geometry element only has it's index set to a meaningful value. More...

WlzGMVertexT *	WlzGMModelNewVT (WlzGMModel model, WlzErrorNum dstErr)
	Creates a new vertex topology element. More...

WlzGMModel *	WlzGMModelNewFromS (WlzGMShell gS, WlzErrorNum dstErr)
	Creates a new model from the given shell. The new model contains a copy of the given shell. More...

WlzGMModel *	WlzGMModelCopy (WlzGMModel gM, WlzErrorNum dstErr)
	Copies the given model. Because all unused elements are squeezed out, the indicies of the elements may not be equal in the two models. More...

WlzErrorNum	WlzGMModelFree (WlzGMModel *model)
	Free's a geometric model and it's elements. More...

WlzErrorNum	WlzGMModelFreeS (WlzGMModel model, WlzGMShell shell)
	Marks a shell and it's geometry as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeF (WlzGMModel model, WlzGMFace face)
	Marks a face as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeLT (WlzGMModel model, WlzGMLoopT loopT)
	Marks a loop topology as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeDT (WlzGMModel model, WlzGMDiskT diskT)
	Marks an disk topology as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeE (WlzGMModel model, WlzGMEdge edge)
	Marks an edge as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeET (WlzGMModel model, WlzGMEdgeT edgeT)
	Marks an edge topology as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelFreeV (WlzGMModel model, WlzGMVertex vertex)
	Marks a vertex and it's geometry as invalid and suitable for reclaiming. Watch out that vertices remain in the hash table after being free'd. More...

WlzErrorNum	WlzGMModelFreeVT (WlzGMModel model, WlzGMVertexT vertexT)
	Marks a vertex topology as invalid and suitable for reclaiming. More...

WlzErrorNum	WlzGMModelDeleteS (WlzGMModel model, WlzGMShell dS)
	Deletes a shell by unlinking it and then freeing it and all it's children. More...

WlzErrorNum	WlzGMModelDeleteF (WlzGMModel model, WlzGMFace dF)
	Deletes a face along with all the elements which depend on it. This may change the geometry and/or the topology of the parent shell. More...

WlzErrorNum	WlzGMModelDeleteE (WlzGMModel model, WlzGMEdge dE)
	Deletes a edge along with all the elements which depend on it. This may change the geometry and/or the topology of the parent shell. On return all shell geometries are valid. More...

WlzErrorNum	WlzGMModelDeleteV (WlzGMModel model, WlzGMVertex dV)
	Deletes a vertex along with all the elements which depend on it. All elements which depend on the vertex are unlinked and then freed. If the vertex's parents were to depend only on the vertex then they would be free'd too as the Woolz geometric models can not hold an isolated vertex. The basic algorithm used is: Build a collection of edges which use the vertex and then delete all edges in the collection. If there are no edges (in the collection) then just unlink and free the vertex. The geometries of the existing and new shells will be valid on return. More...

int	WlzGMModelGetDimension (WlzGMModel model, WlzErrorNum dstErr)
	Gets the models dimension from the model's type. More...

WlzErrorNum	WlzGMModelTypeValid (WlzGMModelType type)
	Checks the model type is valid. More...

WlzGMResource *	WlzGMModelGetRes (WlzGMModel model, WlzGMElemType elemType, WlzErrorNum dstErr)
	Gets the resources for the given element type in the given model. More...

WlzGMElemType	WlzGMModelGetSGeomType (WlzGMModel *model)
	Gets the shell's geometry type from the model's type. More...

WlzGMElemType	WlzGMModelGetVGeomType (WlzGMModel *model)
	Gets the verticies geometry type from the model's type. More...

WlzErrorNum	WlzGMShellGetGBB3D (WlzGMShell shell, WlzDBox3 bBox)
	Gets a shell's geometry using the given destination pointer to a double precision bounding box. More...

WlzErrorNum	WlzGMShellGetGBBV3D (WlzGMShell shell, double vol)
	Gets the volume of the shell's geometry's bounding box. More...

WlzErrorNum	WlzGMShellGetGBB2D (WlzGMShell shell, WlzDBox2 bBox)
	Gets a shell's geometry using the given destination pointer to a double precision bounding box. More...

WlzErrorNum	WlzGMShellSetGBB3D (WlzGMShell *shell, WlzDBox3 bBox)
	Sets a shell's geometry using the given double precision bounding box. More...

WlzErrorNum	WlzGMShellSetGBB2D (WlzGMShell *shell, WlzDBox2 bBox)
	Sets a shell's geometry using the given double precision bounding box. More...

WlzErrorNum	WlzGMShellSetG3D (WlzGMShell shell, int nPnt, WlzDVertex3 pos)
	Sets a shell's geometry using the pair of double precision points. More...

WlzErrorNum	WlzGMShellSetG2D (WlzGMShell shell, int nPnt, WlzDVertex2 pos)
	Sets a shell's geometry using the pair of double precision points. More...

WlzErrorNum	WlzGMModelSetSG (WlzGMModel *model)
	Sets the geometry of each of the shells in the given model. More...

WlzErrorNum	WlzGMShellUpdateG3D (WlzGMShell *shell, WlzDVertex3 pos)
	Updates a shell's geometry using the given double precision position. More...

WlzErrorNum	WlzGMShellUpdateG2D (WlzGMShell *shell, WlzDVertex2 pos)
	Updates a shell's geometry using the new given double precision position. More...

WlzErrorNum	WlzGMShellUpdateGBB3D (WlzGMShell *shell, WlzDBox3 bBox)
	Updates a shell's geometry using the given double precision position bounding box. The updated geometry is the union of the existing geometry and the given bounding box. More...

WlzErrorNum	WlzGMShellUpdateGBB2D (WlzGMShell *shell, WlzDBox2 bBox)
	Updates a shell's geometry using the given double precision position bounding box. The updated geometry is the union of the existing geometry and the given bounding box. More...

WlzErrorNum	WlzGMShellDndateG2D (WlzGMShell *shell, WlzDVertex2 pos)
	Updates the shell's geometry for the removed vertex with the given position. More...

WlzErrorNum	WlzGMShellDndateG3D (WlzGMShell *shell, WlzDVertex3 pos)
	Updates the shell's geometry for the removed vertex with the given position. More...

WlzErrorNum	WlzGMShellComputeGBB (WlzGMShell *shell)
	Recomputes the shell's geometry by walking through it's children. More...

int	WlzGMShellGInBB3D (WlzGMShell *shell, WlzDVertex3 pos)
	Checks to see if the given double precision position is within the shell's bounding box. More...

int	WlzGMShellGInBB2D (WlzGMShell *shell, WlzDVertex2 pos)
	Checks to see if the given double precision position is within the shell's bounding box. More...

WlzErrorNum	WlzGMVertexSetG2D (WlzGMVertex *vertex, WlzDVertex2 pos)
	Sets a vertex geometry using the given double precision position. More...

WlzErrorNum	WlzGMVertexSetG2N (WlzGMVertex *vertex, WlzDVertex2 pos, WlzDVertex2 nrm)
	Sets a vertex geometry using the given double precision position and normal. More...

WlzErrorNum	WlzGMVertexSetG3D (WlzGMVertex *vertex, WlzDVertex3 pos)
	Sets a vertex geometry using the given double precision position. More...

WlzErrorNum	WlzGMVertexSetG3N (WlzGMVertex *vertex, WlzDVertex3 pos, WlzDVertex3 nrm)
	Sets a vertex geometry using the given double precision position and normal. More...

WlzErrorNum	WlzGMVertexGetG3D (WlzGMVertex vertex, WlzDVertex3 dstPos)
	Gets a veticies geometry into the given double precision position destination pointer. More...

WlzErrorNum	WlzGMVertexGetG3N (WlzGMVertex vertex, WlzDVertex3 dstPos, WlzDVertex3 *dstNrm)
	Gets a vertex geometry into the given double precision position and normaldestination pointers. If the model vertex geometry does not have normals then the normal will be {0,0,0}, the zero vector. More...

WlzErrorNum	WlzGMVertexGetG2D (WlzGMVertex vertex, WlzDVertex2 dstPos)
	Gets a veticies geometry into the given double precision position destination pointer. More...

WlzErrorNum	WlzGMVertexGetG2N (WlzGMVertex vertex, WlzDVertex2 dstPos, WlzDVertex2 *dstNrm)
	Gets a vertex geometry into the given double precision position and normal destination pointers. If the model vertex geometry does not have normals then the normal will be {0,0}, the zero vector. More...

WlzDVertex3	WlzGMVertexCmp3D (WlzGMVertex *vertex, WlzDVertex3 pos)
	Compares the position of the given vertex with the given 3D double precision position. More...

WlzDVertex2	WlzGMVertexCmp2D (WlzGMVertex *vertex, WlzDVertex2 pos)
	Compares the position of the given vertex with the given 2D double precision position. More...

int	WlzGMVertexCmpSign2D (WlzGMVertex *vertex, WlzDVertex2 pos)
	Compares the coordinates of the given vertex and 2D double precision position to find a signed value for sorting. More...

int	WlzGMVertexCmpSign3D (WlzGMVertex *vertex, WlzDVertex3 pos)
	Compares the coordinates of the given vertex and 3D double precision position to find a signed value for sorting. More...

double	WlzGMVertexDistSq3D (WlzGMVertex *vertex, WlzDVertex3 pos)
	Calculates the square of the Euclidean distance between the given vertex and the given 3D double precision position. More...

WlzDVertex3	WlzGMVertexNormal3D (WlzGMModel dummy, WlzGMVertex gV, int sVBufSz, WlzGMVertex *sVBuf, WlzErrorNum dstErr)
	Computes the value of the normal at the given vertex which lies within the given model. This function requires a buffer in which to store the vertices found on the loops surrounding the given vertex. For efficiency this can/should be reused between calls of this function. More...

double	WlzGMVertexDistSq2D (WlzGMVertex *vertex, WlzDVertex2 pos)
	Calculates the square of the Euclidean distance between the given vertex and the given 2D double precision position. More...

WlzErrorNum	WlzGMFaceGetG3D (WlzGMFace face, WlzDVertex3 dstPos0, WlzDVertex3 dstPos1, WlzDVertex3 dstPos2)
	Gets the geometry of a face. More...

WlzGMVertex *	WlzGMModelMatchVertexG3D (WlzGMModel *model, WlzDVertex3 gPos)
	Attempts to find a vertex which matches the given double precision 3D position. More...

WlzGMVertex *	WlzGMModelMatchVertexG2D (WlzGMModel *model, WlzDVertex2 gPos)
	Attempts to find a vertex which matches the given double precision 2D position. More...

double	WlzGMVertexShellDist (WlzGMVertex v0, WlzGMVertex v1, double maxDist, WlzErrorNum *dstErr)
	Computes the minimum distance between the two vertices where the path between them is constrained to the common shell, this will be negative if the two vertices are in different shells. More...

WlzErrorNum	WlzGMVerifyModel (WlzGMModel model, WlzGMElemP dstElmP)
	Verifies the given model. If the invalid element destination pointer is given then it MAY be set to point to an invalid element of the model. This function was written as an aid to debugging. More...

WlzErrorNum	WlzGMVerifyShell (WlzGMShell shell, WlzGMElemP dstElmP)
	Verifies the given shell. If the invalid element destination pointer is given then it MAY be set to point to an invalid element of the model. This function was written as an aid to debugging. More...

WlzErrorNum	WlzGMVerifyLoopT (WlzGMLoopT loopT, WlzGMElemP dstElmP)
	Verifies the given loop topology element. If the invalid element destination pointer is given then it MAY be set to point to an invalid element of the model. This function was written as an aid to debugging. More...

WlzGMEdge **	WlzGMModelFindNMEdges (WlzGMModel model, int dstNMCnt, WlzErrorNum *dstErr)
	Finds a loop topology element in common for the two edge topology elements. More...

WlzGMLoopT *	WlzGMEdgeTCommonLoopT (WlzGMEdgeT eT0, WlzGMEdgeT eT1)
	Finds a loop topology element in common for the two edge topology elements. More...

WlzGMEdge *	WlzGMVertexCommonEdge (WlzGMVertex eV0, WlzGMVertex eV1)
	Finds the edge common to the two given verticies. More...

WlzGMShell *	WlzGMVertexCommonShell (WlzGMVertex eV0, WlzGMVertex eV1)
	Finds the shell common to the two given verticies. More...

WlzGMShell *	WlzGMVertexGetShell (WlzGMVertex *eV)
	Finds the parent shell of the given vertex. More...

WlzGMShell *	WlzGMEdgeGetShell (WlzGMEdge *eE)
	Finds the parent shell of the given edge. More...

WlzGMVertex *	WlzGMEdgeCommonVertex (WlzGMEdge eE0, WlzGMEdge eE1)
	Finds the common vertex of the two given edges. More...

WlzGMVertex *	WlzGMEdgeCommonVertexGetDiskTs (WlzGMEdge eE0, WlzGMEdge eE1, WlzGMDiskT dstDT0, WlzGMDiskT dstDT1)
	Finds the common vertex of the two given edges and sets the disk topology element destination pointers if there is a common vertex. NULL*. More...

WlzGMDiskT *	WlzGMEdgeCommonDiskT (WlzGMEdge eE0, WlzGMEdge eE1)
	Finds the common disk topology element of the two given edges. More...

WlzGMFace *	WlzGMEdgeCommonFace (WlzGMEdge eE0, WlzGMEdge eE1)
	Finds the common face which is shared by the two given edges. More...

void	WlzGMVertexTAppend (WlzGMVertexT eVT, WlzGMVertexT nVT)
	Append new vertex topology element onto a doubly linked list of vertex topology element's, knowing that neither is NULL. Vertex topology elements are maintained in an unordered doubly linked list. More...

void	WlzGMDiskTAppend (WlzGMDiskT eDT, WlzGMDiskT nDT)
	Append new edge topology onto a doubly linked list of disk topology element's, knowing that neither is NULL. Disk topology elements are maintained in an unordered doubly linked list. More...

void	WlzGMEdgeTAppend (WlzGMEdgeT eET, WlzGMEdgeT nET)
	Append new edge topology onto a doubly linked list of edge topology element's, knowing that neither is NULL. Edge topology elements are maintained in an ordered doubly linked list, CCW around the inside of loops and CW around the outside of 2D loops. More...

void	WlzGMEdgeTInsert (WlzGMEdgeT eET, WlzGMEdgeT nET)
	Insert new edge topology into a doubly linked list of edge topology element's, knowing that neither is NULL. Edge topology elements are maintained in an ordered doubly linked list, CCW around the inside of loops and CW around the outside of 2D loops. More...

void	WlzGMEdgeTInsertRadial (WlzGMEdgeT *nET)
	Inserts the given new edge topology element into a radially sorted cyclic list of edge topology element's. More...

void	WlzGMLoopTAppend (WlzGMLoopT eLT, WlzGMLoopT nLT)
	Append new loop topology onto a doubly linked list of loop topology element's, knowing that neither is NULL. Loop topology elements are maintained in an unordered doubly linked list. More...

void	WlzGMLoopTUnlink (WlzGMLoopT *dLT)
	Unlinks the given loop topology element from a doubly linked list of loop topology element's, knowing that it is not NULL. If this is the only loop topology element in parent the parent's list of loop topology elements is set to NULL. Other elements which point to this loop topology element are not modified. More...

void	WlzGMEdgeTUnlink (WlzGMEdgeT *dET)
	Unlinks the given edge topology element from it's loop topology element and it's opposite edge topology element. The opposite edge topology element MUST be unlinked before the model is valid again. More...

void	WlzGMVertexTUnlink (WlzGMVertexT *dVT)
	Unlinks the given vertex topology element from a doubly linked list of vertex topology element's, knowing that it is not NULL. Since the parent of a vertex topology element is always an edge topology element and an edge topology element only ever uses a single vertex topology element, set the parent's vertex topology element pointer to NULL. More...

void	WlzGMDiskTUnlink (WlzGMDiskT *dDT)
	Unlinks the given disk topology element from a doubly linked list of disk topology element's, knowing that it is not NULL. If this is the only disk topology element of the vertex the vertex's list of disk topology elements is set to NULL. Other elements which point to this disk topology element are not modified. More...

void	WlzGMDiskTJoin (WlzGMDiskT gDT0, WlzGMDiskT gDT1)
	Joins the given pair of disk topology elements on return the first of the diskTs has all the vertexTs of both and the second of the diskTs should be free'd without being unlinked. More...

void	WlzGMShellAppend (WlzGMShell eS, WlzGMShell nS)
	Append new shell onto a doubly linked list of shells, knowing that neither is NULL. A model's shells are maintained in an unordered doubly linked list. More...

void	WlzGMShellUnlink (WlzGMShell *dS)
	Unlinks the given shell from a doubly linked list of shells kept by the model, knowing that the given shell ptr is not NULL. More...

void	WlzGMShellJoinAndUnlink (WlzGMShell eShell, WlzGMShell dShell)
	Joins the shell to be unlinked onto the shell that's to be extended and then unlinks (but does not free) it. Both shells must be valid. More...

WlzGMResIdxTb *	WlzGMModelResIdx (WlzGMModel model, unsigned int eMsk, WlzErrorNum dstErr)
	Makes an index look up table data structure for the given model. More...

void	WlzGMModelResIdxFree (WlzGMResIdxTb *resIdxTb)
	Frees a GM index look up table data structure. More...

WlzErrorNum	WlzGMModelRehashVHT (WlzGMModel *model, int vHTSz)
	Rehash the vertex matching hash table. More...

WlzErrorNum	WlzGMModelConstructS (WlzGMModel cM, WlzGMShell gS)
	Constructs a copy of the given shell in the current model. The curent model must be of the same type as the parent of the given shell and all the usual construction restrictions apply, see WlzGMModelConstructSimplex2D(). More...

WlzErrorNum	WlzGMModelConstructSimplex2D (WlzGMModel model, WlzDVertex2 pos)
	Constructs a 2D simplex (edge) defined by two double precision end points. Either of the two points may already exist within the model and the simplex must not intersect any existing simplex in the model. See WlzGMShellMatchVtxG2D() for the meaning of the backwards, forwards and distance search parameters. More...

WlzErrorNum	WlzGMModelConstructSimplex2N (WlzGMModel model, WlzDVertex2 pos, WlzDVertex2 *nrm)
	Constructs a 2D simplex (edge) defined by two double precision end points with normal components. Either of the two points may already exist within the model and the simplex must not intersect any existing simplex in the model. See WlzGMShellMatchVtxG2D() for the meaning of the backwards, forwards and distance search parameters. More...

WlzErrorNum	WlzGMModelConstructSimplex3D (WlzGMModel model, WlzDVertex3 pos)
	Constructs a 3D simplex (triangle) defined by three double precision verticies, any of which may already exist within the model. If a new face is created then the child loopT of that face will have edgeT's that use the given vertices in their given order. More...

WlzErrorNum	WlzGMModelConstructSimplex3N (WlzGMModel model, WlzDVertex3 pos, WlzDVertex3 *nrm)
	Constructs a 3D simplex (triangle) defined by three double precision verticies with normals, any of which may already exist within the model. If a new face is created then the child loopT of that face will have edgeT's that use the given vertices in their given order. More...

void	WlzGMModelRemVertex (WlzGMModel model, WlzGMVertex dV)
	Removes a vertex from the models vertex hash table. The vertex's geometry must have been set. More...

void	WlzGMModelAddVertexToHT (WlzGMModel model, WlzGMVertex nV)
	Adds a new vertex into the models vertex hash table. The vertex's geometry must have been set. More...

int	WlzGMShellSimplexCnt (WlzGMShell *shell)
	Counts the number of simplicies in the given shell. For 2D models the simplicies are edges and for 3D models they are loops. More...

Detailed Description

Basic operators for manipulating Woolz geometric models. These can be either planar graphs or 3D surfaces, with the surfaces being either manifold or non-manifold.

Author: Bill Hill

Date: February 2000

Version

Id: e9580aa9d38c56da5f543d31951c761e01b6100b

: Address: MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK.

: Copyright (C), [2012], The University Court of the University of Edinburgh, Old College, Edinburgh, UK.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Todo:

Functions for finding the minimum distance between two verticies are only partialy implemented.
The element deletion functions are only partly written and only partly work for 2D models.
Radial edges are not checked for in WlzGMModelDeleteS().
Unlinking edge topology elements using WlzGMEdgeTUnlink() may not be valid if edge topology elements aren't unlinked in pairs for terminal edge elements.
3D simplex construction is not complete. If all three verticies and all three edges are within the model, need to check if the three verticies are in a common loop and then if ther're not add a new loop, 2 loopT's, 6 edgeT's and 6 vertexT's.
WlzGMLoopTFindShell() code for loopTs connected by a vertex not implemented yet.

Function Documentation

WlzErrorNum WlzGMModelDeleteF	(	WlzGMModel *	model,
		WlzGMFace *	dF
	)

Deletes a face along with all the elements which depend on it. This may change the geometry and/or the topology of the parent shell.

Returns: Woolz error code.

Todo:: This function is yet to be written.

Parameters

model	Model with resources.
dF	Face to delete.

References WLZ_ERR_UNIMPLEMENTED.

WlzErrorNum WlzGMModelDeleteE	(	WlzGMModel *	model,
		WlzGMEdge *	dE
	)

Deletes a edge along with all the elements which depend on it. This may change the geometry and/or the topology of the parent shell. On return all shell geometries are valid.

Returns: Woolz error code.

Todo:: Deletion of edges has only been implemented for 2D models.

Parameters

model	Model with resources.
dE	Edge to delete.

References _WlzGMEdge::edgeT, _WlzGMEdge::idx, _WlzGMVertexT::next, _WlzGMEdgeT::opp, _WlzGMEdgeT::parent, _WlzGMModel::type, _WlzGMEdgeT::vertexT, WLZ_ERR_GMELM_TYPE, WLZ_ERR_NONE, WLZ_ERR_UNIMPLEMENTED, WLZ_GMMOD_2D, WLZ_GMMOD_2I, WLZ_GMMOD_2N, WLZ_GMMOD_3D, WLZ_GMMOD_3I, WLZ_GMMOD_3N, and WlzGMVerifyModel().

Referenced by WlzGMModelDeleteV().

WlzGMFace* WlzGMEdgeCommonFace	(	WlzGMEdge *	eE0,
		WlzGMEdge *	eE1
	)

Finds the common face which is shared by the two given edges.

Returns: The common face or NULL if it doesn't exist.

Parameters

eE0	First edge element.
eE1	Second edge element.

References _WlzGMShell::child, _WlzGMEdge::edgeT, _WlzGMLoopT::face, _WlzGMEdgeT::parent, _WlzGMLoopT::parent, _WlzGMEdgeT::rad, WlzGMLoopTAppend(), and WlzGMLoopTUnlink().

Referenced by WlzGMModelConstructS().

Functions

Detailed Description

Function Documentation