liblwgeom_topo.h File Reference
#include "liblwgeom.h"
Include dependency graph for liblwgeom_topo.h:
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Data Structures | |
| struct | LWT_ISO_NODE |
| NODE. More... | |
| struct | LWT_ISO_EDGE |
| EDGE. More... | |
| struct | LWT_ISO_FACE |
| FACE. More... | |
| struct | LWT_BE_CALLBACKS_T |
| Structure containing base backend callbacks. More... | |
| struct | LWT_TOPOERR_T |
| Topology error. More... | |
Macros | |
| #define | LWT_COL_NODE_NODE_ID 1<<0 |
| Node fields. More... | |
| #define | LWT_COL_NODE_CONTAINING_FACE 1<<1 |
| #define | LWT_COL_NODE_GEOM 1<<2 |
| #define | LWT_COL_NODE_ALL (1<<3)-1 |
| #define | LWT_COL_EDGE_EDGE_ID 1<<0 |
| Edge fields. More... | |
| #define | LWT_COL_EDGE_START_NODE 1<<1 |
| #define | LWT_COL_EDGE_END_NODE 1<<2 |
| #define | LWT_COL_EDGE_FACE_LEFT 1<<3 |
| #define | LWT_COL_EDGE_FACE_RIGHT 1<<4 |
| #define | LWT_COL_EDGE_NEXT_LEFT 1<<5 |
| #define | LWT_COL_EDGE_NEXT_RIGHT 1<<6 |
| #define | LWT_COL_EDGE_GEOM 1<<7 |
| #define | LWT_COL_EDGE_ALL (1<<8)-1 |
| #define | LWT_COL_FACE_FACE_ID 1<<0 |
| Face fields. More... | |
| #define | LWT_COL_FACE_MBR 1<<1 |
| #define | LWT_COL_FACE_ALL (1<<2)-1 |
Typedefs | |
| typedef int64_t | LWT_INT64 |
| typedef LWT_INT64 | LWT_ELEMID |
| Identifier of topology element. More... | |
| typedef enum LWT_SPATIALTYPE_T | LWT_SPATIALTYPE |
| typedef struct LWT_BE_DATA_T | LWT_BE_DATA |
| Backend private data pointer. More... | |
| typedef struct LWT_BE_IFACE_T | LWT_BE_IFACE |
| Backend interface handler. More... | |
| typedef struct LWT_BE_TOPOLOGY_T | LWT_BE_TOPOLOGY |
| Topology handler. More... | |
| typedef struct LWT_BE_CALLBACKS_T | LWT_BE_CALLBACKS |
| Structure containing base backend callbacks. More... | |
| typedef enum LWT_TOPOERR_TYPE_T | LWT_TOPOERR_TYPE |
| Topology errors type. More... | |
| typedef struct LWT_TOPOERR_T | LWT_TOPOERR |
| Topology error. More... | |
| typedef struct LWT_TOPOLOGY_T | LWT_TOPOLOGY |
| Opaque topology structure. More... | |
Enumerations | |
| enum | LWT_SPATIALTYPE_T { LWT_PUNTAL = 0 , LWT_LINEAL = 1 , LWT_AREAL = 2 , LWT_COLLECTION = 3 } |
| enum | LWT_TOPOERR_TYPE_T { LWT_TOPOERR_EDGE_CROSSES_NODE , LWT_TOPOERR_EDGE_INVALID , LWT_TOPOERR_EDGE_NOT_SIMPLE , LWT_TOPOERR_EDGE_CROSSES_EDGE , LWT_TOPOERR_EDGE_STARTNODE_MISMATCH , LWT_TOPOERR_EDGE_ENDNODE_MISMATCH , LWT_TOPOERR_FACE_WITHOUT_EDGES , LWT_TOPOERR_FACE_HAS_NO_RINGS , LWT_TOPOERR_FACE_OVERLAPS_FACE , LWT_TOPOERR_FACE_WITHIN_FACE } |
| Topology errors type. More... | |
Functions | |
| void | lwt_iso_node_release (LWT_ISO_NODE *node) |
| LWT_BE_IFACE * | lwt_CreateBackendIface (const LWT_BE_DATA *data) |
| Create a new backend interface. More... | |
| void | lwt_BackendIfaceRegisterCallbacks (LWT_BE_IFACE *iface, const LWT_BE_CALLBACKS *cb) |
| Register backend callbacks into the opaque iface handler. More... | |
| void | lwt_FreeBackendIface (LWT_BE_IFACE *iface) |
| Release memory associated with an LWT_BE_IFACE. More... | |
| LWT_TOPOLOGY * | lwt_CreateTopology (LWT_BE_IFACE *iface, const char *name, int srid, double prec, int hasz) |
| Initializes a new topology. More... | |
| LWT_TOPOLOGY * | lwt_LoadTopology (LWT_BE_IFACE *iface, const char *name) |
| Loads an existing topology by name from the database. More... | |
| void | lwt_DropTopology (LWT_TOPOLOGY *topo) |
| Drop a topology and all its associated objects from the database. More... | |
| void | lwt_FreeTopology (LWT_TOPOLOGY *topo) |
| Release memory associated with an LWT_TOPOLOGY. More... | |
| LWT_ELEMID | lwt_GetNodeByPoint (LWT_TOPOLOGY *topo, LWPOINT *pt, double tol) |
| Retrieve the id of a node at a point location. More... | |
| LWT_ELEMID | lwt_GetEdgeByPoint (LWT_TOPOLOGY *topo, LWPOINT *pt, double tol) |
| Find the edge-id of an edge that intersects a given point. More... | |
| LWT_ELEMID | lwt_GetFaceByPoint (LWT_TOPOLOGY *topo, LWPOINT *pt, double tol) |
| Find the face-id of a face containing a given point. More... | |
| LWT_ELEMID | lwt_AddPoint (LWT_TOPOLOGY *topo, LWPOINT *point, double tol) |
| Adds a point to the topology. More... | |
| LWT_ELEMID * | lwt_AddLine (LWT_TOPOLOGY *topo, LWLINE *line, double tol, int *nedges) |
| Adds a linestring to the topology. More... | |
| LWT_ELEMID * | lwt_AddLineNoFace (LWT_TOPOLOGY *topo, LWLINE *line, double tol, int *nedges) |
| Adds a linestring to the topology without determining generated faces. More... | |
| int | lwt_Polygonize (LWT_TOPOLOGY *topo) |
| LWT_ELEMID * | lwt_AddPolygon (LWT_TOPOLOGY *topo, LWPOLY *poly, double tol, int *nfaces) |
| Adds a polygon to the topology. More... | |
| void | lwt_CreateTopoGeo (LWT_TOPOLOGY *topo, LWGEOM *geom) |
| Populate an empty topology with data from a simple geometry. More... | |
| LWT_ELEMID | lwt_AddIsoNode (LWT_TOPOLOGY *topo, LWT_ELEMID face, LWPOINT *pt, int skipChecks) |
| Add an isolated node. More... | |
| int | lwt_MoveIsoNode (LWT_TOPOLOGY *topo, LWT_ELEMID node, LWPOINT *pt) |
| Move an isolated node. More... | |
| int | lwt_RemoveIsoNode (LWT_TOPOLOGY *topo, LWT_ELEMID node) |
| Remove an isolated node. More... | |
| int | lwt_RemIsoEdge (LWT_TOPOLOGY *topo, LWT_ELEMID edge) |
| Remove an isolated edge. More... | |
| LWT_ELEMID | lwt_AddIsoEdge (LWT_TOPOLOGY *topo, LWT_ELEMID startNode, LWT_ELEMID endNode, const LWLINE *geom) |
| Add an isolated edge connecting two existing isolated nodes. More... | |
| LWT_ELEMID | lwt_AddEdgeModFace (LWT_TOPOLOGY *topo, LWT_ELEMID start_node, LWT_ELEMID end_node, LWLINE *geom, int skipChecks) |
| Add a new edge possibly splitting a face (modifying it) More... | |
| LWT_ELEMID | lwt_AddEdgeNewFaces (LWT_TOPOLOGY *topo, LWT_ELEMID start_node, LWT_ELEMID end_node, LWLINE *geom, int skipChecks) |
| Add a new edge possibly splitting a face (replacing with two new faces) More... | |
| LWT_ELEMID | lwt_RemEdgeNewFace (LWT_TOPOLOGY *topo, LWT_ELEMID edge) |
| Remove an edge, possibly merging two faces (replacing both with a new one) More... | |
| LWT_ELEMID | lwt_RemEdgeModFace (LWT_TOPOLOGY *topo, LWT_ELEMID edge) |
| Remove an edge, possibly merging two faces (replacing one with the other) More... | |
| int | lwt_ChangeEdgeGeom (LWT_TOPOLOGY *topo, LWT_ELEMID edge, LWLINE *curve) |
| Changes the shape of an edge without affecting the topology structure. More... | |
| LWT_ELEMID | lwt_ModEdgeSplit (LWT_TOPOLOGY *topo, LWT_ELEMID edge, LWPOINT *pt, int skipChecks) |
| Split an edge by a node, modifying the original edge and adding a new one. More... | |
| LWT_ELEMID | lwt_NewEdgesSplit (LWT_TOPOLOGY *topo, LWT_ELEMID edge, LWPOINT *pt, int skipChecks) |
| Split an edge by a node, replacing it with two new edges. More... | |
| LWT_ELEMID | lwt_ModEdgeHeal (LWT_TOPOLOGY *topo, LWT_ELEMID e1, LWT_ELEMID e2) |
| Merge two edges, modifying the first and deleting the second. More... | |
| LWT_ELEMID | lwt_NewEdgeHeal (LWT_TOPOLOGY *topo, LWT_ELEMID e1, LWT_ELEMID e2) |
| Merge two edges, replacing both with a new one. More... | |
| int | lwt_GetFaceEdges (LWT_TOPOLOGY *topo, LWT_ELEMID face, LWT_ELEMID **edges) |
| Return the list of directed edges bounding a face. More... | |
| LWGEOM * | lwt_GetFaceGeometry (LWT_TOPOLOGY *topo, LWT_ELEMID face) |
| Return the geometry of a face. More... | |
