static GtsObject *
parent(GtsVertex *v1) {
GtsPoint *p1;
GtsVertex *v2;
GtsSegment *p;
/* Create another Vertex */
p1 = GTS_POINT(v1);
if( (v2 = gts_vertex_new(pygts_parent_vertex_class(),p1->x,p1->y,p1->z+1))
== NULL ) {
PyErr_SetString(PyExc_MemoryError, "could not create parent");
return NULL;
}
/* Create and return the parent */
if( (p = gts_segment_new(pygts_parent_segment_class(),v1,v2))
== NULL ) {
PyErr_SetString(PyExc_MemoryError, "could not create parent");
gts_object_destroy(GTS_OBJECT(v2));
return NULL;
}
return GTS_OBJECT(p);
}
static PyObject *
new_(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyObject *o;
PygtsObject *obj;
GtsSegment *tmp;
GtsObject *segment=NULL;
PyObject *v1_=NULL,*v2_=NULL;
PygtsVertex *v1,*v2;
guint alloc_gtsobj = TRUE;
guint N;
/* Parse the args */
if(kwds) {
o = PyDict_GetItemString(kwds,"alloc_gtsobj");
if(o==Py_False) {
alloc_gtsobj = FALSE;
}
if(o!=NULL) {
PyDict_DelItemString(kwds, "alloc_gtsobj");
}
}
if(kwds) {
Py_INCREF(Py_False);
PyDict_SetItemString(kwds,"alloc_gtsobj", Py_False);
}
/* Allocate the gtsobj (if needed) */
if( alloc_gtsobj ) {
/* Parse the args */
if( (N = PyTuple_Size(args)) < 2 ) {
PyErr_SetString(PyExc_TypeError,"expected two Vertices");
return NULL;
}
v1_ = PyTuple_GET_ITEM(args,0);
v2_ = PyTuple_GET_ITEM(args,1);
/* Convert to PygtsObjects */
if(!pygts_vertex_check(v1_)) {
PyErr_SetString(PyExc_TypeError,"expected two Vertices");
return NULL;
}
if(!pygts_vertex_check(v2_)) {
PyErr_SetString(PyExc_TypeError,"expected two Vertices");
return NULL;
}
v1 = PYGTS_VERTEX(v1_);
v2 = PYGTS_VERTEX(v2_);
/* Error check */
if(PYGTS_OBJECT(v1)->gtsobj == PYGTS_OBJECT(v2)->gtsobj) {
PyErr_SetString(PyExc_ValueError,"Vertices are identical");
return NULL;
}
/* Create the GtsSegment */
segment = GTS_OBJECT(gts_segment_new(gts_segment_class(),
GTS_VERTEX(v1->gtsobj),
GTS_VERTEX(v2->gtsobj)));
if( segment == NULL ) {
PyErr_SetString(PyExc_MemoryError, "could not create Segment");
return NULL;
}
/* Check for duplicate */
tmp = gts_segment_is_duplicate(GTS_SEGMENT(segment));
if( tmp != NULL ) {
gts_object_destroy(segment);
segment = GTS_OBJECT(tmp);
}
/* If corresponding PyObject found in object table, we are done */
if( (obj=(PygtsObject*)g_hash_table_lookup(obj_table,segment)) != NULL ) {
Py_INCREF(obj);
return (PyObject*)obj;
}
}
/* Chain up */
obj = PYGTS_OBJECT(PygtsObjectType.tp_new(type,args,kwds));
if( alloc_gtsobj ) {
obj->gtsobj = segment;
pygts_object_register(PYGTS_OBJECT(obj));
}
return (PyObject*)obj;
}
/**
* gts_edge_new:
* @klass: a #GtsEdgeClass.
* @v1: a #GtsVertex.
* @v2: a #GtsVertex.
*
* Returns: a new #GtsEdge linking @v1 and @v2.
*/
GtsEdge * gts_edge_new (GtsEdgeClass * klass,
GtsVertex * v1, GtsVertex * v2)
{
return GTS_EDGE (gts_segment_new (GTS_SEGMENT_CLASS (klass), v1, v2));
}