C++ (Cpp) ptarray_isclosed3d Examples

Example #1

File: lwcircstring.c Project: abuhamid/bd_geonode

int
lwcircstring_is_closed(const LWCIRCSTRING *curve)
{
	if (FLAGS_GET_Z(curve->flags))
		return ptarray_isclosed3d(curve->points);

	return ptarray_isclosed2d(curve->points);
}

Example #2

File: ptarray.c Project: TesseractG/lwgeom

int
ptarray_isclosedz(const POINTARRAY *in)
{
	if ( FLAGS_GET_Z(in->flags) )
		return ptarray_isclosed3d(in);
	else
		return ptarray_isclosed2d(in);
}

Example #3

File: lwtriangle.c Project: abuhamid/bd_geonode

/*
 * Construct a triangle from a LWLINE being
 * the shell
 * Pointarray from intput geom are cloned.
 * Input line must have 4 points, and be closed.
 */
LWTRIANGLE *
lwtriangle_from_lwline(const LWLINE *shell)
{
	LWTRIANGLE *ret;
	POINTARRAY *pa;

	if ( shell->points->npoints != 4 )
		lwerror("lwtriangle_from_lwline: shell must have exactly 4 points");

	if (   (!FLAGS_GET_Z(shell->flags) && !ptarray_isclosed2d(shell->points)) ||
	        (FLAGS_GET_Z(shell->flags) && !ptarray_isclosed3d(shell->points)) )
		lwerror("lwtriangle_from_lwline: shell must be closed");

	pa = ptarray_clone_deep(shell->points);
	ret = lwtriangle_construct(shell->srid, NULL, pa);

	if (lwtriangle_is_repeated_points(ret))
		lwerror("lwtriangle_from_lwline: some points are repeated in triangle");

	return ret;
}

Example #4

File: lwgeom_in_kml.c Project: JeremyGrosser/postgis

/**
 * Parse KML Polygon
 */
static LWGEOM* parse_kml_polygon(xmlNodePtr xnode, bool *hasz)
{
	int ring;
	xmlNodePtr xa, xb;
	POINTARRAY **ppa = NULL;

	for (xa = xnode->children ; xa != NULL ; xa = xa->next)
	{

		/* Polygon/outerBoundaryIs */
		if (xa->type != XML_ELEMENT_NODE) continue;
		if (!is_kml_namespace(xa, false)) continue;
		if (strcmp((char *) xa->name, "outerBoundaryIs")) continue;

		for (xb = xa->children ; xb != NULL ; xb = xb->next)
		{

			if (xb->type != XML_ELEMENT_NODE) continue;
			if (!is_kml_namespace(xb, false)) continue;
			if (strcmp((char *) xb->name, "LinearRing")) continue;

			ppa = (POINTARRAY**) lwalloc(sizeof(POINTARRAY*));
			ppa[0] = parse_kml_coordinates(xb->children, hasz);

			if (ppa[0]->npoints < 4
			        || (!*hasz && !ptarray_isclosed2d(ppa[0]))
			        ||  (*hasz && !ptarray_isclosed3d(ppa[0])))
				lwerror("invalid KML representation");
		}
	}

	for (ring=1, xa = xnode->children ; xa != NULL ; xa = xa->next)
	{

		/* Polygon/innerBoundaryIs */
		if (xa->type != XML_ELEMENT_NODE) continue;
		if (!is_kml_namespace(xa, false)) continue;
		if (strcmp((char *) xa->name, "innerBoundaryIs")) continue;

		for (xb = xa->children ; xb != NULL ; xb = xb->next)
		{

			if (xb->type != XML_ELEMENT_NODE) continue;
			if (!is_kml_namespace(xb, false)) continue;
			if (strcmp((char *) xb->name, "LinearRing")) continue;

			ppa = (POINTARRAY**) lwrealloc((POINTARRAY *) ppa,
			                               sizeof(POINTARRAY*) * (ring + 1));
			ppa[ring] = parse_kml_coordinates(xb->children, hasz);

			if (ppa[ring]->npoints < 4
			        || (!*hasz && !ptarray_isclosed2d(ppa[ring]))
			        ||  (*hasz && !ptarray_isclosed3d(ppa[ring])))
				lwerror("invalid KML representation");

			ring++;
		}
	}

	/* Exterior Ring is mandatory */
	if (ppa == NULL || ppa[0] == NULL) lwerror("invalid KML representation");

	return (LWGEOM *) lwpoly_construct(4326, NULL, ring, ppa);
}