int main(int argc, char *argv[])
{
struct GModule *module;
struct _param {
struct Option *dsn, *out, *layer, *spat, *where,
*min_area;
struct Option *snap, *type, *outloc, *cnames;
} param;
struct _flag {
struct Flag *list, *tlist, *no_clean, *z, *notab,
*region;
struct Flag *over, *extend, *formats, *tolower, *no_import;
} flag;
int i, j, layer, arg_s_num, nogeom, ncnames;
float xmin, ymin, xmax, ymax;
int ncols = 0, type;
double min_area, snap;
char buf[2000], namebuf[2000], tempvect[GNAME_MAX];
char *separator;
struct Key_Value *loc_proj_info, *loc_proj_units;
struct Key_Value *proj_info, *proj_units;
struct Cell_head cellhd, loc_wind, cur_wind;
char error_msg[8192];
/* Vector */
struct Map_info Map, Tmp, *Out;
int cat;
/* Attributes */
struct field_info *Fi;
dbDriver *driver;
dbString sql, strval;
int dim, with_z;
/* OGR */
OGRDataSourceH Ogr_ds;
OGRLayerH Ogr_layer;
OGRFieldDefnH Ogr_field;
char *Ogr_fieldname;
OGRFieldType Ogr_ftype;
OGRFeatureH Ogr_feature;
OGRFeatureDefnH Ogr_featuredefn;
OGRGeometryH Ogr_geometry, Ogr_oRing, poSpatialFilter;
OGRSpatialReferenceH Ogr_projection;
OGREnvelope oExt;
OGRwkbGeometryType Ogr_geom_type;
int OFTIntegerListlength;
char *output;
char **layer_names; /* names of layers to be imported */
int *layers; /* layer indexes */
int nlayers; /* number of layers to import */
char **available_layer_names; /* names of layers to be imported */
int navailable_layers;
int layer_id;
unsigned int n_features, feature_count;
int overwrite;
double area_size;
int use_tmp_vect;
xmin = ymin = xmax = ymax = 0.0;
loc_proj_info = loc_proj_units = NULL;
Ogr_ds = Ogr_oRing = poSpatialFilter = NULL;
OFTIntegerListlength = 40; /* hack due to limitation in OGR */
area_size = 0.0;
use_tmp_vect = FALSE;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("import"));
module->description = _("Converts vector data into a GRASS vector map using OGR library.");
param.dsn = G_define_option();
param.dsn->key = "dsn";
param.dsn->type = TYPE_STRING;
param.dsn->required =YES;
param.dsn->label = _("OGR datasource name");
param.dsn->description = _("Examples:\n"
"\t\tESRI Shapefile: directory containing shapefiles\n"
"\t\tMapInfo File: directory containing mapinfo files");
param.layer = G_define_option();
param.layer->key = "layer";
param.layer->type = TYPE_STRING;
param.layer->required = NO;
param.layer->multiple = YES;
param.layer->label =
_("OGR layer name. If not given, all available layers are imported");
param.layer->description =
_("Examples:\n" "\t\tESRI Shapefile: shapefile name\n"
"\t\tMapInfo File: mapinfo file name");
param.layer->guisection = _("Selection");
param.out = G_define_standard_option(G_OPT_V_OUTPUT);
param.out->required = NO;
param.out->guisection = _("Output");
param.spat = G_define_option();
param.spat->key = "spatial";
param.spat->type = TYPE_DOUBLE;
param.spat->multiple = YES;
param.spat->required = NO;
param.spat->key_desc = "xmin,ymin,xmax,ymax";
param.spat->label = _("Import subregion only");
param.spat->guisection = _("Selection");
param.spat->description =
_("Format: xmin,ymin,xmax,ymax - usually W,S,E,N");
param.where = G_define_standard_option(G_OPT_DB_WHERE);
param.where->guisection = _("Selection");
param.min_area = G_define_option();
param.min_area->key = "min_area";
param.min_area->type = TYPE_DOUBLE;
param.min_area->required = NO;
param.min_area->answer = "0.0001";
param.min_area->label =
_("Minimum size of area to be imported (square units)");
param.min_area->guisection = _("Selection");
param.min_area->description = _("Smaller areas and "
"islands are ignored. Should be greater than snap^2");
param.type = G_define_standard_option(G_OPT_V_TYPE);
param.type->options = "point,line,boundary,centroid";
param.type->answer = "";
param.type->description = _("Optionally change default input type");
param.type->descriptions =
_("point;import area centroids as points;"
"line;import area boundaries as lines;"
"boundary;import lines as area boundaries;"
"centroid;import points as centroids");
param.type->guisection = _("Selection");
param.snap = G_define_option();
param.snap->key = "snap";
param.snap->type = TYPE_DOUBLE;
param.snap->required = NO;
param.snap->answer = "-1";
param.snap->label = _("Snapping threshold for boundaries");
param.snap->description = _("'-1' for no snap");
param.outloc = G_define_option();
param.outloc->key = "location";
param.outloc->type = TYPE_STRING;
param.outloc->required = NO;
param.outloc->description = _("Name for new location to create");
param.outloc->key_desc = "name";
param.cnames = G_define_option();
param.cnames->key = "cnames";
param.cnames->type = TYPE_STRING;
param.cnames->required = NO;
param.cnames->multiple = YES;
param.cnames->description =
_("List of column names to be used instead of original names, "
"first is used for category column");
param.cnames->guisection = _("Attributes");
flag.list = G_define_flag();
flag.list->key = 'l';
flag.list->description = _("List available OGR layers in data source and exit");
flag.list->suppress_required = YES;
flag.list->guisection = _("Print");
flag.tlist = G_define_flag();
flag.tlist->key = 'a';
flag.tlist->description = _("List available OGR layers including feature types "
"in data source and exit");
flag.tlist->suppress_required = YES;
flag.tlist->guisection = _("Print");
flag.formats = G_define_flag();
flag.formats->key = 'f';
flag.formats->description = _("List supported formats and exit");
flag.formats->suppress_required = YES;
flag.formats->guisection = _("Print");
/* if using -c, you lose topological information ! */
flag.no_clean = G_define_flag();
flag.no_clean->key = 'c';
flag.no_clean->description = _("Do not clean polygons (not recommended)");
flag.no_clean->guisection = _("Output");
flag.z = G_define_flag();
flag.z->key = 'z';
flag.z->description = _("Create 3D output");
flag.z->guisection = _("Output");
flag.notab = G_define_flag();
flag.notab->key = 't';
flag.notab->description = _("Do not create attribute table");
flag.notab->guisection = _("Attributes");
flag.over = G_define_flag();
flag.over->key = 'o';
flag.over->description =
_("Override dataset projection (use location's projection)");
flag.region = G_define_flag();
flag.region->key = 'r';
flag.region->guisection = _("Selection");
flag.region->description = _("Limit import to the current region");
flag.extend = G_define_flag();
flag.extend->key = 'e';
flag.extend->description =
_("Extend location extents based on new dataset");
flag.tolower = G_define_flag();
flag.tolower->key = 'w';
flag.tolower->description =
_("Change column names to lowercase characters");
flag.tolower->guisection = _("Attributes");
flag.no_import = G_define_flag();
flag.no_import->key = 'i';
flag.no_import->description =
_("Create the location specified by the \"location\" parameter and exit."
" Do not import the vector data.");
/* The parser checks if the map already exists in current mapset, this is
* wrong if location options is used, so we switch out the check and do it
* in the module after the parser */
overwrite = G_check_overwrite(argc, argv);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
G_begin_polygon_area_calculations(); /* Used in geom() */
OGRRegisterAll();
/* list supported formats */
if (flag.formats->answer) {
int iDriver;
G_message(_("Available OGR Drivers:"));
for (iDriver = 0; iDriver < OGRGetDriverCount(); iDriver++) {
OGRSFDriverH poDriver = OGRGetDriver(iDriver);
const char *pszRWFlag;
if (OGR_Dr_TestCapability(poDriver, ODrCCreateDataSource))
pszRWFlag = "rw";
else
pszRWFlag = "ro";
fprintf(stdout, " %s (%s): %s\n",
OGR_Dr_GetName(poDriver),
pszRWFlag, OGR_Dr_GetName(poDriver));
}
exit(EXIT_SUCCESS);
}
if (param.dsn->answer == NULL) {
G_fatal_error(_("Required parameter <%s> not set"), param.dsn->key);
}
min_area = atof(param.min_area->answer);
snap = atof(param.snap->answer);
type = Vect_option_to_types(param.type);
ncnames = 0;
if (param.cnames->answers) {
i = 0;
while (param.cnames->answers[i++]) {
ncnames++;
}
}
/* Open OGR DSN */
Ogr_ds = NULL;
if (strlen(param.dsn->answer) > 0)
Ogr_ds = OGROpen(param.dsn->answer, FALSE, NULL);
if (Ogr_ds == NULL)
G_fatal_error(_("Unable to open data source <%s>"), param.dsn->answer);
/* Make a list of available layers */
navailable_layers = OGR_DS_GetLayerCount(Ogr_ds);
available_layer_names =
(char **)G_malloc(navailable_layers * sizeof(char *));
if (flag.list->answer || flag.tlist->answer)
G_message(_("Data source <%s> (format '%s') contains %d layers:"),
param.dsn->answer,
OGR_Dr_GetName(OGR_DS_GetDriver(Ogr_ds)), navailable_layers);
for (i = 0; i < navailable_layers; i++) {
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, i);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
Ogr_geom_type = OGR_FD_GetGeomType(Ogr_featuredefn);
available_layer_names[i] =
G_store((char *)OGR_FD_GetName(Ogr_featuredefn));
if (flag.tlist->answer)
fprintf(stdout, "%s (%s)\n", available_layer_names[i],
OGRGeometryTypeToName(Ogr_geom_type));
else if (flag.list->answer)
fprintf(stdout, "%s\n", available_layer_names[i]);
}
if (flag.list->answer || flag.tlist->answer) {
fflush(stdout);
exit(EXIT_SUCCESS);
}
/* Make a list of layers to be imported */
if (param.layer->answer) { /* From option */
nlayers = 0;
while (param.layer->answers[nlayers])
nlayers++;
layer_names = (char **)G_malloc(nlayers * sizeof(char *));
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++) {
layer_names[i] = G_store(param.layer->answers[i]);
/* Find it in the source */
layers[i] = -1;
for (j = 0; j < navailable_layers; j++) {
if (strcmp(available_layer_names[j], layer_names[i]) == 0) {
layers[i] = j;
break;
}
}
if (layers[i] == -1)
G_fatal_error(_("Layer <%s> not available"), layer_names[i]);
}
}
else { /* use list of all layers */
nlayers = navailable_layers;
layer_names = available_layer_names;
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++)
layers[i] = i;
}
if (param.out->answer) {
output = G_store(param.out->answer);
}
else {
if (nlayers < 1)
G_fatal_error(_("No OGR layers available"));
output = G_store(layer_names[0]);
G_message(_("All available OGR layers will be imported into vector map <%s>"), output);
}
if (!param.outloc->answer) { /* Check if the map exists */
if (G_find_vector2(output, G_mapset()) && !overwrite)
G_fatal_error(_("Vector map <%s> already exists"),
output);
}
/* Get first imported layer to use for extents and projection check */
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layers[0]);
if (flag.region->answer) {
if (param.spat->answer)
G_fatal_error(_("Select either the current region flag or the spatial option, not both"));
G_get_window(&cur_wind);
xmin = cur_wind.west;
xmax = cur_wind.east;
ymin = cur_wind.south;
ymax = cur_wind.north;
}
if (param.spat->answer) {
/* See as reference: gdal/ogr/ogr_capi_test.c */
/* cut out a piece of the map */
/* order: xmin,ymin,xmax,ymax */
arg_s_num = 0;
i = 0;
while (param.spat->answers[i]) {
if (i == 0)
xmin = atof(param.spat->answers[i]);
if (i == 1)
ymin = atof(param.spat->answers[i]);
if (i == 2)
xmax = atof(param.spat->answers[i]);
if (i == 3)
ymax = atof(param.spat->answers[i]);
arg_s_num++;
i++;
}
if (arg_s_num != 4)
G_fatal_error(_("4 parameters required for 'spatial' parameter"));
}
if (param.spat->answer || flag.region->answer) {
G_debug(2, "cut out with boundaries: xmin:%f ymin:%f xmax:%f ymax:%f",
xmin, ymin, xmax, ymax);
/* in theory this could be an irregular polygon */
poSpatialFilter = OGR_G_CreateGeometry(wkbPolygon);
Ogr_oRing = OGR_G_CreateGeometry(wkbLinearRing);
OGR_G_AddPoint(Ogr_oRing, xmin, ymin, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmin, ymax, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmax, ymax, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmax, ymin, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmin, ymin, 0.0);
OGR_G_AddGeometryDirectly(poSpatialFilter, Ogr_oRing);
OGR_L_SetSpatialFilter(Ogr_layer, poSpatialFilter);
}
if (param.where->answer) {
/* select by attribute */
OGR_L_SetAttributeFilter(Ogr_layer, param.where->answer);
}
/* fetch boundaries */
if ((OGR_L_GetExtent(Ogr_layer, &oExt, 1)) == OGRERR_NONE) {
G_get_window(&cellhd);
cellhd.north = oExt.MaxY;
cellhd.south = oExt.MinY;
cellhd.west = oExt.MinX;
cellhd.east = oExt.MaxX;
cellhd.rows = 20; /* TODO - calculate useful values */
cellhd.cols = 20;
cellhd.ns_res = (cellhd.north - cellhd.south) / cellhd.rows;
cellhd.ew_res = (cellhd.east - cellhd.west) / cellhd.cols;
}
else {
cellhd.north = 1.;
cellhd.south = 0.;
cellhd.west = 0.;
cellhd.east = 1.;
cellhd.top = 1.;
cellhd.bottom = 1.;
cellhd.rows = 1;
cellhd.rows3 = 1;
cellhd.cols = 1;
cellhd.cols3 = 1;
cellhd.depths = 1;
cellhd.ns_res = 1.;
cellhd.ns_res3 = 1.;
cellhd.ew_res = 1.;
cellhd.ew_res3 = 1.;
cellhd.tb_res = 1.;
}
/* suppress boundary splitting ? */
if (flag.no_clean->answer) {
split_distance = -1.;
}
else {
split_distance = 0.;
area_size =
sqrt((cellhd.east - cellhd.west) * (cellhd.north - cellhd.south));
}
/* Fetch input map projection in GRASS form. */
proj_info = NULL;
proj_units = NULL;
Ogr_projection = OGR_L_GetSpatialRef(Ogr_layer); /* should not be freed later */
/* Do we need to create a new location? */
if (param.outloc->answer != NULL) {
/* Convert projection information non-interactively as we can't
* assume the user has a terminal open */
if (GPJ_osr_to_grass(&cellhd, &proj_info,
&proj_units, Ogr_projection, 0) < 0) {
G_fatal_error(_("Unable to convert input map projection to GRASS "
"format; cannot create new location."));
}
else {
G_make_location(param.outloc->answer, &cellhd,
proj_info, proj_units, NULL);
G_message(_("Location <%s> created"), param.outloc->answer);
}
/* If the i flag is set, clean up? and exit here */
if(flag.no_import->answer)
{
exit(EXIT_SUCCESS);
}
}
else {
int err = 0;
/* Projection only required for checking so convert non-interactively */
if (GPJ_osr_to_grass(&cellhd, &proj_info,
&proj_units, Ogr_projection, 0) < 0)
G_warning(_("Unable to convert input map projection information to "
"GRASS format for checking"));
/* Does the projection of the current location match the dataset? */
/* G_get_window seems to be unreliable if the location has been changed */
G__get_window(&loc_wind, "", "DEFAULT_WIND", "PERMANENT");
/* fetch LOCATION PROJ info */
if (loc_wind.proj != PROJECTION_XY) {
loc_proj_info = G_get_projinfo();
loc_proj_units = G_get_projunits();
}
if (flag.over->answer) {
cellhd.proj = loc_wind.proj;
cellhd.zone = loc_wind.zone;
G_message(_("Over-riding projection check"));
}
else if (loc_wind.proj != cellhd.proj
|| (err =
G_compare_projections(loc_proj_info, loc_proj_units,
proj_info, proj_units)) != TRUE) {
int i_value;
strcpy(error_msg,
_("Projection of dataset does not"
" appear to match current location.\n\n"));
/* TODO: output this info sorted by key: */
if (loc_wind.proj != cellhd.proj || err != -2) {
if (loc_proj_info != NULL) {
strcat(error_msg, _("GRASS LOCATION PROJ_INFO is:\n"));
for (i_value = 0; i_value < loc_proj_info->nitems;
i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
loc_proj_info->key[i_value],
loc_proj_info->value[i_value]);
strcat(error_msg, "\n");
}
if (proj_info != NULL) {
strcat(error_msg, _("Import dataset PROJ_INFO is:\n"));
for (i_value = 0; i_value < proj_info->nitems; i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
proj_info->key[i_value],
proj_info->value[i_value]);
}
else {
strcat(error_msg, _("Import dataset PROJ_INFO is:\n"));
if (cellhd.proj == PROJECTION_XY)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (unreferenced/unknown)\n",
cellhd.proj);
else if (cellhd.proj == PROJECTION_LL)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (lat/long)\n",
cellhd.proj);
else if (cellhd.proj == PROJECTION_UTM)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (UTM), zone = %d\n",
cellhd.proj, cellhd.zone);
else if (cellhd.proj == PROJECTION_SP)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (State Plane), zone = %d\n",
cellhd.proj, cellhd.zone);
else
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (unknown), zone = %d\n",
cellhd.proj, cellhd.zone);
}
}
else {
if (loc_proj_units != NULL) {
strcat(error_msg, "GRASS LOCATION PROJ_UNITS is:\n");
for (i_value = 0; i_value < loc_proj_units->nitems;
i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
loc_proj_units->key[i_value],
loc_proj_units->value[i_value]);
strcat(error_msg, "\n");
}
if (proj_units != NULL) {
strcat(error_msg, "Import dataset PROJ_UNITS is:\n");
for (i_value = 0; i_value < proj_units->nitems; i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
proj_units->key[i_value],
proj_units->value[i_value]);
}
}
sprintf(error_msg + strlen(error_msg),
_("\nYou can use the -o flag to %s to override this projection check.\n"),
G_program_name());
strcat(error_msg,
_("Consider generating a new location with 'location' parameter"
" from input data set.\n"));
G_fatal_error(error_msg);
}
else {
G_message(_("Projection of input dataset and current location "
"appear to match"));
}
}
db_init_string(&sql);
db_init_string(&strval);
/* open output vector */
/* strip any @mapset from vector output name */
G_find_vector(output, G_mapset());
Vect_open_new(&Map, output, flag.z->answer != 0);
Out = ⤅
n_polygon_boundaries = 0;
if (!flag.no_clean->answer) {
/* check if we need a tmp vector */
/* estimate distance for boundary splitting --> */
for (layer = 0; layer < nlayers; layer++) {
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
n_features = feature_count = 0;
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
OGR_L_ResetReading(Ogr_layer);
/* count polygons and isles */
G_message(_("Counting polygons for %d features (OGR layer <%s>)..."),
n_features, layer_names[layer]);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
G_percent(feature_count++, n_features, 1); /* show something happens */
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry != NULL) {
poly_count(Ogr_geometry, (type & GV_BOUNDARY));
}
OGR_F_Destroy(Ogr_feature);
}
}
G_debug(1, "n polygon boundaries: %d", n_polygon_boundaries);
if (n_polygon_boundaries > 50) {
split_distance =
area_size / log(n_polygon_boundaries);
/* divisor is the handle: increase divisor to decrease split_distance */
split_distance = split_distance / 5.;
G_debug(1, "root of area size: %f", area_size);
G_verbose_message(_("Boundary splitting distance in map units: %G"),
split_distance);
}
/* <-- estimate distance for boundary splitting */
use_tmp_vect = n_polygon_boundaries > 0;
if (use_tmp_vect) {
/* open temporary vector, do the work in the temporary vector
* at the end copy alive lines to output vector
* in case of polygons this reduces the coor file size by a factor of 2 to 5
* only needed when cleaning polygons */
sprintf(tempvect, "%s_tmp", output);
G_verbose_message(_("Using temporary vector <%s>"), tempvect);
Vect_open_new(&Tmp, tempvect, flag.z->answer != 0);
Out = &Tmp;
}
}
Vect_hist_command(&Map);
/* Points and lines are written immediately with categories. Boundaries of polygons are
* written to the vector then cleaned and centroids are calculated for all areas in cleaan vector.
* Then second pass through finds all centroids in each polygon feature and adds its category
* to the centroid. The result is that one centroids may have 0, 1 ore more categories
* of one ore more (more input layers) fields. */
with_z = 0;
for (layer = 0; layer < nlayers; layer++) {
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
/* Add DB link */
if (!flag.notab->answer) {
char *cat_col_name = GV_KEY_COLUMN;
if (nlayers == 1) { /* one layer only */
Fi = Vect_default_field_info(&Map, layer + 1, NULL,
GV_1TABLE);
}
else {
Fi = Vect_default_field_info(&Map, layer + 1, NULL,
GV_MTABLE);
}
if (ncnames > 0) {
cat_col_name = param.cnames->answers[0];
}
Vect_map_add_dblink(&Map, layer + 1, layer_names[layer], Fi->table,
cat_col_name, Fi->database, Fi->driver);
ncols = OGR_FD_GetFieldCount(Ogr_featuredefn);
G_debug(2, "%d columns", ncols);
/* Create table */
sprintf(buf, "create table %s (%s integer", Fi->table,
cat_col_name);
db_set_string(&sql, buf);
for (i = 0; i < ncols; i++) {
Ogr_field = OGR_FD_GetFieldDefn(Ogr_featuredefn, i);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
G_debug(3, "Ogr_ftype: %i", Ogr_ftype); /* look up below */
if (i < ncnames - 1) {
Ogr_fieldname = G_store(param.cnames->answers[i + 1]);
}
else {
/* Change column names to [A-Za-z][A-Za-z0-9_]* */
Ogr_fieldname = G_store(OGR_Fld_GetNameRef(Ogr_field));
G_debug(3, "Ogr_fieldname: '%s'", Ogr_fieldname);
G_str_to_sql(Ogr_fieldname);
G_debug(3, "Ogr_fieldname: '%s'", Ogr_fieldname);
}
/* avoid that we get the 'cat' column twice */
if (strcmp(Ogr_fieldname, GV_KEY_COLUMN) == 0) {
sprintf(namebuf, "%s_", Ogr_fieldname);
Ogr_fieldname = G_store(namebuf);
}
/* captial column names are a pain in SQL */
if (flag.tolower->answer)
G_str_to_lower(Ogr_fieldname);
if (strcmp(OGR_Fld_GetNameRef(Ogr_field), Ogr_fieldname) != 0) {
G_warning(_("Column name changed: '%s' -> '%s'"),
OGR_Fld_GetNameRef(Ogr_field), Ogr_fieldname);
}
/** Simple 32bit integer OFTInteger = 0 **/
/** List of 32bit integers OFTIntegerList = 1 **/
/** Double Precision floating point OFTReal = 2 **/
/** List of doubles OFTRealList = 3 **/
/** String of ASCII chars OFTString = 4 **/
/** Array of strings OFTStringList = 5 **/
/** Double byte string (unsupported) OFTWideString = 6 **/
/** List of wide strings (unsupported) OFTWideStringList = 7 **/
/** Raw Binary data (unsupported) OFTBinary = 8 **/
/** OFTDate = 9 **/
/** OFTTime = 10 **/
/** OFTDateTime = 11 **/
if (Ogr_ftype == OFTInteger) {
sprintf(buf, ", %s integer", Ogr_fieldname);
}
else if (Ogr_ftype == OFTIntegerList) {
/* hack: treat as string */
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
OFTIntegerListlength);
G_warning(_("Writing column <%s> with fixed length %d chars (may be truncated)"),
Ogr_fieldname, OFTIntegerListlength);
}
else if (Ogr_ftype == OFTReal) {
sprintf(buf, ", %s double precision", Ogr_fieldname);
#if GDAL_VERSION_NUM >= 1320
}
else if (Ogr_ftype == OFTDate) {
sprintf(buf, ", %s date", Ogr_fieldname);
}
else if (Ogr_ftype == OFTTime) {
sprintf(buf, ", %s time", Ogr_fieldname);
}
else if (Ogr_ftype == OFTDateTime) {
sprintf(buf, ", %s datetime", Ogr_fieldname);
#endif
}
else if (Ogr_ftype == OFTString) {
int fwidth;
fwidth = OGR_Fld_GetWidth(Ogr_field);
/* TODO: read all records first and find the longest string length */
if (fwidth == 0) {
G_warning(_("Width for column %s set to 255 (was not specified by OGR), "
"some strings may be truncated!"),
Ogr_fieldname);
fwidth = 255;
}
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
fwidth);
}
else if (Ogr_ftype == OFTStringList) {
/* hack: treat as string */
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
OFTIntegerListlength);
G_warning(_("Writing column %s with fixed length %d chars (may be truncated)"),
Ogr_fieldname, OFTIntegerListlength);
}
else {
G_warning(_("Column type not supported (%s)"),
Ogr_fieldname);
buf[0] = 0;
}
db_append_string(&sql, buf);
G_free(Ogr_fieldname);
}
db_append_string(&sql, ")");
G_debug(3, db_get_string(&sql));
driver =
db_start_driver_open_database(Fi->driver,
Vect_subst_var(Fi->database,
&Map));
if (driver == NULL) {
G_fatal_error(_("Unable open database <%s> by driver <%s>"),
Vect_subst_var(Fi->database, &Map), Fi->driver);
}
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database(driver);
db_shutdown_driver(driver);
G_fatal_error(_("Unable to create table: '%s'"),
db_get_string(&sql));
}
if (db_create_index2(driver, Fi->table, cat_col_name) != DB_OK)
G_warning(_("Unable to create index for table <%s>, key <%s>"),
Fi->table, cat_col_name);
if (db_grant_on_table
(driver, Fi->table, DB_PRIV_SELECT,
DB_GROUP | DB_PUBLIC) != DB_OK)
G_fatal_error(_("Unable to grant privileges on table <%s>"),
Fi->table);
db_begin_transaction(driver);
}
/* Import feature */
cat = 1;
nogeom = 0;
OGR_L_ResetReading(Ogr_layer);
n_features = feature_count = 0;
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
G_important_message(_("Importing %d features (OGR layer <%s>)..."),
n_features, layer_names[layer]);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
G_percent(feature_count++, n_features, 1); /* show something happens */
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry == NULL) {
nogeom++;
}
else {
dim = OGR_G_GetCoordinateDimension(Ogr_geometry);
if (dim > 2)
with_z = 1;
geom(Ogr_geometry, Out, layer + 1, cat, min_area, type,
flag.no_clean->answer);
}
/* Attributes */
if (!flag.notab->answer) {
sprintf(buf, "insert into %s values ( %d", Fi->table, cat);
db_set_string(&sql, buf);
for (i = 0; i < ncols; i++) {
Ogr_field = OGR_FD_GetFieldDefn(Ogr_featuredefn, i);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
if (OGR_F_IsFieldSet(Ogr_feature, i)) {
if (Ogr_ftype == OFTInteger || Ogr_ftype == OFTReal) {
sprintf(buf, ", %s",
OGR_F_GetFieldAsString(Ogr_feature, i));
#if GDAL_VERSION_NUM >= 1320
/* should we use OGR_F_GetFieldAsDateTime() here ? */
}
else if (Ogr_ftype == OFTDate || Ogr_ftype == OFTTime
|| Ogr_ftype == OFTDateTime) {
char *newbuf;
db_set_string(&strval, (char *)
OGR_F_GetFieldAsString(Ogr_feature,
i));
db_double_quote_string(&strval);
sprintf(buf, ", '%s'", db_get_string(&strval));
newbuf = G_str_replace(buf, "/", "-"); /* fix 2001/10/21 to 2001-10-21 */
sprintf(buf, "%s", newbuf);
#endif
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList) {
db_set_string(&strval, (char *)
OGR_F_GetFieldAsString(Ogr_feature,
i));
db_double_quote_string(&strval);
sprintf(buf, ", '%s'", db_get_string(&strval));
}
}
else {
/* G_warning (_("Column value not set" )); */
if (Ogr_ftype == OFTInteger || Ogr_ftype == OFTReal) {
sprintf(buf, ", NULL");
#if GDAL_VERSION_NUM >= 1320
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList ||
Ogr_ftype == OFTDate) {
#else
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList) {
#endif
sprintf(buf, ", ''");
}
}
db_append_string(&sql, buf);
}
db_append_string(&sql, " )");
G_debug(3, db_get_string(&sql));
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database(driver);
db_shutdown_driver(driver);
G_fatal_error(_("Cannot insert new row: %s"),
db_get_string(&sql));
}
}
OGR_F_Destroy(Ogr_feature);
cat++;
}
G_percent(1, 1, 1); /* finish it */
if (!flag.notab->answer) {
db_commit_transaction(driver);
db_close_database_shutdown_driver(driver);
}
if (nogeom > 0)
G_warning(_("%d %s without geometry"), nogeom,
nogeom == 1 ? "feature" : "features");
}
separator = "-----------------------------------------------------";
G_message("%s", separator);
if (use_tmp_vect) {
/* TODO: is it necessary to build here? probably not, consumes time */
/* GV_BUILD_BASE is sufficient to toggle boundary cleaning */
Vect_build_partial(&Tmp, GV_BUILD_BASE);
}
if (use_tmp_vect && !flag.no_clean->answer &&
Vect_get_num_primitives(Out, GV_BOUNDARY) > 0) {
int ret, centr, ncentr, otype, n_overlaps, n_nocat;
CENTR *Centr;
struct spatial_index si;
double x, y, total_area, overlap_area, nocat_area;
struct bound_box box;
struct line_pnts *Points;
int nmodif;
Points = Vect_new_line_struct();
G_message("%s", separator);
G_warning(_("Cleaning polygons, result is not guaranteed!"));
if (snap >= 0) {
G_message("%s", separator);
G_message(_("Snapping boundaries (threshold = %.3e)..."), snap);
Vect_snap_lines(&Tmp, GV_BOUNDARY, snap, NULL);
}
/* It is not to clean to snap centroids, but I have seen data with 2 duplicate polygons
* (as far as decimal places were printed) and centroids were not identical */
/* Disabled, because overlapping polygons result in many duplicate centroids anyway */
/*
fprintf ( stderr, separator );
fprintf ( stderr, "Snap centroids (threshold 0.000001):\n" );
Vect_snap_lines ( &Map, GV_CENTROID, 0.000001, NULL, stderr );
*/
G_message("%s", separator);
G_message(_("Breaking polygons..."));
Vect_break_polygons(&Tmp, GV_BOUNDARY, NULL);
/* It is important to remove also duplicate centroids in case of duplicate input polygons */
G_message("%s", separator);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Tmp, GV_BOUNDARY | GV_CENTROID, NULL);
/* in non-pathological cases, the bulk of the cleaning is now done */
/* Vect_clean_small_angles_at_nodes() can change the geometry so that new intersections
* are created. We must call Vect_break_lines(), Vect_remove_duplicates()
* and Vect_clean_small_angles_at_nodes() until no more small angles are found */
do {
G_message("%s", separator);
G_message(_("Breaking boundaries..."));
Vect_break_lines(&Tmp, GV_BOUNDARY, NULL);
G_message("%s", separator);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Tmp, GV_BOUNDARY, NULL);
G_message("%s", separator);
G_message(_("Cleaning boundaries at nodes..."));
nmodif =
Vect_clean_small_angles_at_nodes(&Tmp, GV_BOUNDARY, NULL);
} while (nmodif > 0);
/* merge boundaries */
G_message("%s", separator);
G_message(_("Merging boundaries..."));
Vect_merge_lines(&Tmp, GV_BOUNDARY, NULL, NULL);
G_message("%s", separator);
if (type & GV_BOUNDARY) { /* that means lines were converted to boundaries */
G_message(_("Changing boundary dangles to lines..."));
Vect_chtype_dangles(&Tmp, -1.0, NULL);
}
else {
G_message(_("Removing dangles..."));
Vect_remove_dangles(&Tmp, GV_BOUNDARY, -1.0, NULL);
}
G_message("%s", separator);
if (type & GV_BOUNDARY) {
G_message(_("Changing boundary bridges to lines..."));
Vect_chtype_bridges(&Tmp, NULL);
}
else {
G_message(_("Removing bridges..."));
Vect_remove_bridges(&Tmp, NULL);
}
/* Boundaries are hopefully clean, build areas */
G_message("%s", separator);
Vect_build_partial(&Tmp, GV_BUILD_ATTACH_ISLES);
/* Calculate new centroids for all areas, centroids have the same id as area */
ncentr = Vect_get_num_areas(&Tmp);
G_debug(3, "%d centroids/areas", ncentr);
Centr = (CENTR *) G_calloc(ncentr + 1, sizeof(CENTR));
Vect_spatial_index_init(&si, 0);
for (centr = 1; centr <= ncentr; centr++) {
Centr[centr].valid = 0;
Centr[centr].cats = Vect_new_cats_struct();
ret = Vect_get_point_in_area(&Tmp, centr, &x, &y);
if (ret < 0) {
G_warning(_("Unable to calculate area centroid"));
continue;
}
Centr[centr].x = x;
Centr[centr].y = y;
Centr[centr].valid = 1;
box.N = box.S = y;
box.E = box.W = x;
box.T = box.B = 0;
Vect_spatial_index_add_item(&si, centr, &box);
}
/* Go through all layers and find centroids for each polygon */
for (layer = 0; layer < nlayers; layer++) {
G_message("%s", separator);
G_message(_("Finding centroids for OGR layer <%s>..."), layer_names[layer]);
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
OGR_L_ResetReading(Ogr_layer);
cat = 0; /* field = layer + 1 */
G_percent(cat, n_features, 2);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
cat++;
G_percent(cat, n_features, 2);
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry != NULL) {
centroid(Ogr_geometry, Centr, &si, layer + 1, cat,
min_area, type);
}
OGR_F_Destroy(Ogr_feature);
}
}
/* Write centroids */
G_message("%s", separator);
G_message(_("Writing centroids..."));
n_overlaps = n_nocat = 0;
total_area = overlap_area = nocat_area = 0.0;
for (centr = 1; centr <= ncentr; centr++) {
double area;
G_percent(centr, ncentr, 2);
area = Vect_get_area_area(&Tmp, centr);
total_area += area;
if (!(Centr[centr].valid)) {
continue;
}
if (Centr[centr].cats->n_cats == 0) {
nocat_area += area;
n_nocat++;
continue;
}
if (Centr[centr].cats->n_cats > 1) {
Vect_cat_set(Centr[centr].cats, nlayers + 1,
Centr[centr].cats->n_cats);
overlap_area += area;
n_overlaps++;
}
Vect_reset_line(Points);
Vect_append_point(Points, Centr[centr].x, Centr[centr].y, 0.0);
if (type & GV_POINT)
otype = GV_POINT;
else
otype = GV_CENTROID;
Vect_write_line(&Tmp, otype, Points, Centr[centr].cats);
}
if (Centr)
G_free(Centr);
Vect_spatial_index_destroy(&si);
if (n_overlaps > 0) {
G_warning(_("%d areas represent more (overlapping) features, because polygons overlap "
"in input layer(s). Such areas are linked to more than 1 row in attribute table. "
"The number of features for those areas is stored as category in layer %d"),
n_overlaps, nlayers + 1);
}
G_message("%s", separator);
Vect_hist_write(&Map, separator);
Vect_hist_write(&Map, "\n");
sprintf(buf, _("%d input polygons\n"), n_polygons);
G_message(_("%d input polygons"), n_polygons);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Total area: %G (%d areas)\n"), total_area, ncentr);
G_message(_("Total area: %G (%d areas)"), total_area, ncentr);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Overlapping area: %G (%d areas)\n"), overlap_area,
n_overlaps);
G_message(_("Overlapping area: %G (%d areas)"), overlap_area,
n_overlaps);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Area without category: %G (%d areas)\n"), nocat_area,
n_nocat);
G_message(_("Area without category: %G (%d areas)"), nocat_area,
n_nocat);
Vect_hist_write(&Map, buf);
G_message("%s", separator);
}
/* needed?
* OGR_DS_Destroy( Ogr_ds );
*/
if (use_tmp_vect) {
/* Copy temporary vector to output vector */
Vect_copy_map_lines(&Tmp, &Map);
/* release memory occupied by topo, we may need that memory for main output */
Vect_set_release_support(&Tmp);
Vect_close(&Tmp);
Vect_delete(tempvect);
}
Vect_build(&Map);
Vect_close(&Map);
/* -------------------------------------------------------------------- */
/* Extend current window based on dataset. */
/* -------------------------------------------------------------------- */
if (flag.extend->answer) {
G_get_default_window(&loc_wind);
loc_wind.north = MAX(loc_wind.north, cellhd.north);
loc_wind.south = MIN(loc_wind.south, cellhd.south);
loc_wind.west = MIN(loc_wind.west, cellhd.west);
loc_wind.east = MAX(loc_wind.east, cellhd.east);
loc_wind.rows = (int)ceil((loc_wind.north - loc_wind.south)
/ loc_wind.ns_res);
loc_wind.south = loc_wind.north - loc_wind.rows * loc_wind.ns_res;
loc_wind.cols = (int)ceil((loc_wind.east - loc_wind.west)
/ loc_wind.ew_res);
loc_wind.east = loc_wind.west + loc_wind.cols * loc_wind.ew_res;
G__put_window(&loc_wind, "../PERMANENT", "DEFAULT_WIND");
}
if (with_z && !flag.z->answer)
G_warning(_("Input data contains 3D features. Created vector is 2D only, "
"use -z flag to import 3D vector."));
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
struct Map_info In, Out, Buf;
struct line_pnts *Points;
struct line_cats *Cats, *BCats;
char bufname[GNAME_MAX];
struct GModule *module;
struct Option *in_opt, *out_opt, *type_opt, *dista_opt, *distb_opt,
*angle_opt;
struct Flag *straight_flag, *nocaps_flag;
struct Option *tol_opt, *bufcol_opt, *scale_opt, *field_opt;
int verbose;
double da, db, dalpha, tolerance, unit_tolerance;
int type;
int i, ret, nareas, area, nlines, line;
char *Areas, *Lines;
int field;
struct buf_contours *arr_bc;
struct buf_contours_pts arr_bc_pts;
int buffers_count = 0, line_id;
struct spatial_index si;
struct bound_box bbox;
/* Attributes if sizecol is used */
int nrec, ctype;
struct field_info *Fi;
dbDriver *Driver;
dbCatValArray cvarr;
double size_val, scale;
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("geometry"));
G_add_keyword(_("buffer"));
module->description =
_("Creates a buffer around vector features of given type.");
in_opt = G_define_standard_option(G_OPT_V_INPUT);
field_opt = G_define_standard_option(G_OPT_V_FIELD_ALL);
field_opt->guisection = _("Selection");
type_opt = G_define_standard_option(G_OPT_V_TYPE);
type_opt->options = "point,line,boundary,centroid,area";
type_opt->answer = "point,line,area";
type_opt->guisection = _("Selection");
out_opt = G_define_standard_option(G_OPT_V_OUTPUT);
dista_opt = G_define_option();
dista_opt->key = "distance";
dista_opt->type = TYPE_DOUBLE;
dista_opt->required = NO;
dista_opt->description =
_("Buffer distance along major axis in map units");
dista_opt->guisection = _("Distance");
distb_opt = G_define_option();
distb_opt->key = "minordistance";
distb_opt->type = TYPE_DOUBLE;
distb_opt->required = NO;
distb_opt->description =
_("Buffer distance along minor axis in map units");
distb_opt->guisection = _("Distance");
angle_opt = G_define_option();
angle_opt->key = "angle";
angle_opt->type = TYPE_DOUBLE;
angle_opt->required = NO;
angle_opt->answer = "0";
angle_opt->description = _("Angle of major axis in degrees");
angle_opt->guisection = _("Distance");
bufcol_opt = G_define_standard_option(G_OPT_DB_COLUMN);
bufcol_opt->key = "bufcolumn";
bufcol_opt->description =
_("Name of column to use for buffer distances");
bufcol_opt->guisection = _("Distance");
scale_opt = G_define_option();
scale_opt->key = "scale";
scale_opt->type = TYPE_DOUBLE;
scale_opt->required = NO;
scale_opt->answer = "1.0";
scale_opt->description = _("Scaling factor for attribute column values");
scale_opt->guisection = _("Distance");
tol_opt = G_define_option();
tol_opt->key = "tolerance";
tol_opt->type = TYPE_DOUBLE;
tol_opt->required = NO;
tol_opt->answer = "0.01";
tol_opt->description =
_("Maximum distance between theoretical arc and polygon segments as multiple of buffer");
tol_opt->guisection = _("Distance");
straight_flag = G_define_flag();
straight_flag->key = 's';
straight_flag->description = _("Make outside corners straight");
nocaps_flag = G_define_flag();
nocaps_flag->key = 'c';
nocaps_flag->description = _("Don't make caps at the ends of polylines");
G_gisinit(argv[0]);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
type = Vect_option_to_types(type_opt);
if ((dista_opt->answer && bufcol_opt->answer) ||
(!(dista_opt->answer || bufcol_opt->answer)))
G_fatal_error(_("Select a buffer distance/minordistance/angle "
"or column, but not both."));
if (bufcol_opt->answer)
G_warning(_("The bufcol option may contain bugs during the cleaning "
"step. If you encounter problems, use the debug "
"option or clean manually with v.clean tool=break; "
"v.category step=0; v.extract -d type=area"));
if (field_opt->answer)
field = Vect_get_field_number(&In, field_opt->answer);
else
field = -1;
if (bufcol_opt->answer && field == -1)
G_fatal_error(_("The bufcol option requires a valid layer."));
tolerance = atof(tol_opt->answer);
if (tolerance <= 0)
G_fatal_error(_("The tolerance must be > 0."));
if (adjust_tolerance(&tolerance))
G_warning(_("The tolerance was reset to %g"), tolerance);
scale = atof(scale_opt->answer);
if (scale <= 0.0)
G_fatal_error("Illegal scale value");
da = db = dalpha = 0;
if (dista_opt->answer) {
da = atof(dista_opt->answer);
if (distb_opt->answer)
db = atof(distb_opt->answer);
else
db = da;
if (angle_opt->answer)
dalpha = atof(angle_opt->answer);
else
dalpha = 0;
unit_tolerance = tolerance * MIN(da, db);
G_verbose_message(_("The tolerance in map units = %g"), unit_tolerance);
}
Vect_check_input_output_name(in_opt->answer, out_opt->answer,
GV_FATAL_EXIT);
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
BCats = Vect_new_cats_struct();
Vect_set_open_level(2); /* topology required */
if (1 > Vect_open_old2(&In, in_opt->answer, "", field_opt->answer))
G_fatal_error(_("Unable to open vector map <%s>"), in_opt->answer);
if (0 > Vect_open_new(&Out, out_opt->answer, WITHOUT_Z)) {
Vect_close(&In);
G_fatal_error(_("Unable to create vector map <%s>"), out_opt->answer);
}
/* open tmp vector for buffers, needed for cleaning */
sprintf(bufname, "%s_tmp_%d", out_opt->answer, getpid());
if (0 > Vect_open_new(&Buf, bufname, 0)) {
Vect_close(&In);
Vect_close(&Out);
Vect_delete(out_opt->answer);
exit(EXIT_FAILURE);
}
Vect_build_partial(&Buf, GV_BUILD_BASE);
/* check and load attribute column data */
if (bufcol_opt->answer) {
db_CatValArray_init(&cvarr);
Fi = Vect_get_field(&In, field);
if (Fi == NULL)
G_fatal_error(_("Database connection not defined for layer %d"),
field);
Driver = db_start_driver_open_database(Fi->driver, Fi->database);
if (Driver == NULL)
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
Fi->database, Fi->driver);
/* Note do not check if the column exists in the table because it may be expression */
/* TODO: only select values we need instead of all in column */
nrec =
db_select_CatValArray(Driver, Fi->table, Fi->key,
bufcol_opt->answer, NULL, &cvarr);
if (nrec < 0)
G_fatal_error(_("Unable to select data from table <%s>"),
Fi->table);
G_debug(2, "%d records selected from table", nrec);
ctype = cvarr.ctype;
if (ctype != DB_C_TYPE_INT && ctype != DB_C_TYPE_DOUBLE)
G_fatal_error(_("Column type not supported"));
db_close_database_shutdown_driver(Driver);
/* Output cats/values list */
for (i = 0; i < cvarr.n_values; i++) {
if (ctype == DB_C_TYPE_INT) {
G_debug(4, "cat = %d val = %d", cvarr.value[i].cat,
cvarr.value[i].val.i);
}
else if (ctype == DB_C_TYPE_DOUBLE) {
G_debug(4, "cat = %d val = %f", cvarr.value[i].cat,
cvarr.value[i].val.d);
}
}
}
Vect_copy_head_data(&In, &Out);
Vect_hist_copy(&In, &Out);
Vect_hist_command(&Out);
/* Create buffers' boundaries */
nlines = nareas = 0;
if ((type & GV_POINTS) || (type & GV_LINES))
nlines += Vect_get_num_primitives(&In, type);
if (type & GV_AREA)
nareas = Vect_get_num_areas(&In);
if (nlines + nareas == 0) {
G_warning(_("No features available for buffering. "
"Check type option and features available in the input vector."));
exit(EXIT_SUCCESS);
}
buffers_count = 1;
arr_bc = G_malloc((nlines + nareas + 1) * sizeof(struct buf_contours));
Vect_spatial_index_init(&si, 0);
/* Lines (and Points) */
if ((type & GV_POINTS) || (type & GV_LINES)) {
int ltype;
if (nlines > 0)
G_message(_("Buffering lines..."));
for (line = 1; line <= nlines; line++) {
int cat;
G_debug(2, "line = %d", line);
G_percent(line, nlines, 2);
if (!Vect_line_alive(&In, line))
continue;
ltype = Vect_read_line(&In, Points, Cats, line);
if (!(ltype & type))
continue;
if (field > 0 && !Vect_cat_get(Cats, field, &cat))
continue;
if (bufcol_opt->answer) {
ret = db_CatValArray_get_value_di(&cvarr, cat, &size_val);
if (ret != DB_OK) {
G_warning(_("No record for category %d in table <%s>"),
cat, Fi->table);
continue;
}
if (size_val < 0.0) {
G_warning(_("Attribute is of invalid size (%.3f) for category %d"),
size_val, cat);
continue;
}
if (size_val == 0.0)
continue;
da = size_val * scale;
db = da;
dalpha = 0;
unit_tolerance = tolerance * MIN(da, db);
G_debug(2, " dynamic buffer size = %.2f", da);
G_debug(2, _("The tolerance in map units: %g"),
unit_tolerance);
}
Vect_line_prune(Points);
if (ltype & GV_POINTS || Points->n_points == 1) {
Vect_point_buffer2(Points->x[0], Points->y[0], da, db, dalpha,
!(straight_flag->answer), unit_tolerance,
&(arr_bc_pts.oPoints));
Vect_write_line(&Out, GV_BOUNDARY, arr_bc_pts.oPoints, BCats);
line_id = Vect_write_line(&Buf, GV_BOUNDARY, arr_bc_pts.oPoints, Cats);
Vect_destroy_line_struct(arr_bc_pts.oPoints);
/* add buffer to spatial index */
Vect_get_line_box(&Buf, line_id, &bbox);
Vect_spatial_index_add_item(&si, buffers_count, &bbox);
arr_bc[buffers_count].outer = line_id;
arr_bc[buffers_count].inner_count = 0;
arr_bc[buffers_count].inner = NULL;
buffers_count++;
}
else {
Vect_line_buffer2(Points, da, db, dalpha,
!(straight_flag->answer),
!(nocaps_flag->answer), unit_tolerance,
&(arr_bc_pts.oPoints),
&(arr_bc_pts.iPoints),
&(arr_bc_pts.inner_count));
Vect_write_line(&Out, GV_BOUNDARY, arr_bc_pts.oPoints, BCats);
line_id = Vect_write_line(&Buf, GV_BOUNDARY, arr_bc_pts.oPoints, Cats);
Vect_destroy_line_struct(arr_bc_pts.oPoints);
/* add buffer to spatial index */
Vect_get_line_box(&Buf, line_id, &bbox);
Vect_spatial_index_add_item(&si, buffers_count, &bbox);
arr_bc[buffers_count].outer = line_id;
arr_bc[buffers_count].inner_count = arr_bc_pts.inner_count;
if (arr_bc_pts.inner_count > 0) {
arr_bc[buffers_count].inner = G_malloc(arr_bc_pts.inner_count * sizeof(int));
for (i = 0; i < arr_bc_pts.inner_count; i++) {
Vect_write_line(&Out, GV_BOUNDARY, arr_bc_pts.iPoints[i], BCats);
line_id = Vect_write_line(&Buf, GV_BOUNDARY, arr_bc_pts.iPoints[i], Cats);
Vect_destroy_line_struct(arr_bc_pts.iPoints[i]);
/* add buffer to spatial index */
Vect_get_line_box(&Buf, line_id, &bbox);
Vect_spatial_index_add_item(&si, buffers_count, &bbox);
arr_bc[buffers_count].inner[i] = line_id;
}
G_free(arr_bc_pts.iPoints);
}
buffers_count++;
}
}
}
/* Areas */
if (type & GV_AREA) {
int centroid;
if (nareas > 0)
G_message(_("Buffering areas..."));
for (area = 1; area <= nareas; area++) {
int cat;
G_percent(area, nareas, 2);
if (!Vect_area_alive(&In, area))
continue;
centroid = Vect_get_area_centroid(&In, area);
if (centroid == 0)
continue;
Vect_read_line(&In, NULL, Cats, centroid);
if (field > 0 && !Vect_cat_get(Cats, field, &cat))
continue;
if (bufcol_opt->answer) {
ret = db_CatValArray_get_value_di(&cvarr, cat, &size_val);
if (ret != DB_OK) {
G_warning(_("No record for category %d in table <%s>"),
cat, Fi->table);
continue;
}
if (size_val < 0.0) {
G_warning(_("Attribute is of invalid size (%.3f) for category %d"),
size_val, cat);
continue;
}
if (size_val == 0.0)
continue;
da = size_val * scale;
db = da;
dalpha = 0;
unit_tolerance = tolerance * MIN(da, db);
G_debug(2, " dynamic buffer size = %.2f", da);
G_debug(2, _("The tolerance in map units: %g"),
unit_tolerance);
}
Vect_area_buffer2(&In, area, da, db, dalpha,
!(straight_flag->answer),
!(nocaps_flag->answer), unit_tolerance,
&(arr_bc_pts.oPoints),
&(arr_bc_pts.iPoints),
&(arr_bc_pts.inner_count));
Vect_write_line(&Out, GV_BOUNDARY, arr_bc_pts.oPoints, BCats);
line_id = Vect_write_line(&Buf, GV_BOUNDARY, arr_bc_pts.oPoints, Cats);
Vect_destroy_line_struct(arr_bc_pts.oPoints);
/* add buffer to spatial index */
Vect_get_line_box(&Buf, line_id, &bbox);
Vect_spatial_index_add_item(&si, buffers_count, &bbox);
arr_bc[buffers_count].outer = line_id;
arr_bc[buffers_count].inner_count = arr_bc_pts.inner_count;
if (arr_bc_pts.inner_count > 0) {
arr_bc[buffers_count].inner = G_malloc(arr_bc_pts.inner_count * sizeof(int));
for (i = 0; i < arr_bc_pts.inner_count; i++) {
Vect_write_line(&Out, GV_BOUNDARY, arr_bc_pts.iPoints[i], BCats);
line_id = Vect_write_line(&Buf, GV_BOUNDARY, arr_bc_pts.iPoints[i], Cats);
Vect_destroy_line_struct(arr_bc_pts.iPoints[i]);
/* add buffer to spatial index */
Vect_get_line_box(&Buf, line_id, &bbox);
Vect_spatial_index_add_item(&si, buffers_count, &bbox);
arr_bc[buffers_count].inner[i] = line_id;
}
G_free(arr_bc_pts.iPoints);
}
buffers_count++;
}
}
verbose = G_verbose();
G_message(_("Cleaning buffers..."));
/* Break lines */
G_message(_("Building parts of topology..."));
Vect_build_partial(&Out, GV_BUILD_BASE);
G_message(_("Snapping boundaries..."));
Vect_snap_lines(&Out, GV_BOUNDARY, 1e-7, NULL);
G_message(_("Breaking polygons..."));
Vect_break_polygons(&Out, GV_BOUNDARY, NULL);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Out, GV_BOUNDARY, NULL);
do {
G_message(_("Breaking boundaries..."));
Vect_break_lines(&Out, GV_BOUNDARY, NULL);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Out, GV_BOUNDARY, NULL);
G_message(_("Cleaning boundaries at nodes"));
} while (Vect_clean_small_angles_at_nodes(&Out, GV_BOUNDARY, NULL) > 0);
/* Dangles and bridges don't seem to be necessary if snapping is small enough. */
/* Still needed for larger buffer distances ? */
/*
G_message(_("Removing dangles..."));
Vect_remove_dangles(&Out, GV_BOUNDARY, -1, NULL);
G_message (_("Removing bridges..."));
Vect_remove_bridges(&Out, NULL);
*/
G_message(_("Attaching islands..."));
Vect_build_partial(&Out, GV_BUILD_ATTACH_ISLES);
/* Calculate new centroids for all areas */
nareas = Vect_get_num_areas(&Out);
Areas = (char *)G_calloc(nareas + 1, sizeof(char));
G_message(_("Calculating centroids for areas..."));
G_percent(0, nareas, 2);
for (area = 1; area <= nareas; area++) {
double x, y;
G_percent(area, nareas, 2);
G_debug(3, "area = %d", area);
if (!Vect_area_alive(&Out, area))
continue;
ret = Vect_get_point_in_area(&Out, area, &x, &y);
if (ret < 0) {
G_warning(_("Cannot calculate area centroid"));
continue;
}
ret = point_in_buffer(arr_bc, &si, &Buf, x, y);
if (ret) {
G_debug(3, " -> in buffer");
Areas[area] = 1;
}
}
/* Make a list of boundaries to be deleted (both sides inside) */
nlines = Vect_get_num_lines(&Out);
G_debug(3, "nlines = %d", nlines);
Lines = (char *)G_calloc(nlines + 1, sizeof(char));
G_message(_("Generating list of boundaries to be deleted..."));
for (line = 1; line <= nlines; line++) {
int j, side[2], areas[2];
G_percent(line, nlines, 2);
G_debug(3, "line = %d", line);
if (!Vect_line_alive(&Out, line))
continue;
Vect_get_line_areas(&Out, line, &side[0], &side[1]);
for (j = 0; j < 2; j++) {
if (side[j] == 0) { /* area/isle not build */
areas[j] = 0;
}
else if (side[j] > 0) { /* area */
areas[j] = side[j];
}
else { /* < 0 -> island */
areas[j] = Vect_get_isle_area(&Out, abs(side[j]));
}
}
G_debug(3, " areas = %d , %d -> Areas = %d, %d", areas[0], areas[1],
Areas[areas[0]], Areas[areas[1]]);
if (Areas[areas[0]] && Areas[areas[1]])
Lines[line] = 1;
}
G_free(Areas);
/* Delete boundaries */
G_message(_("Deleting boundaries..."));
for (line = 1; line <= nlines; line++) {
G_percent(line, nlines, 2);
if (!Vect_line_alive(&Out, line))
continue;
if (Lines[line]) {
G_debug(3, " delete line %d", line);
Vect_delete_line(&Out, line);
}
else {
/* delete incorrect boundaries */
int side[2];
Vect_get_line_areas(&Out, line, &side[0], &side[1]);
if (!side[0] && !side[1])
Vect_delete_line(&Out, line);
}
}
G_free(Lines);
/* Create new centroids */
Vect_reset_cats(Cats);
Vect_cat_set(Cats, 1, 1);
nareas = Vect_get_num_areas(&Out);
G_message(_("Calculating centroids for areas..."));
for (area = 1; area <= nareas; area++) {
double x, y;
G_percent(area, nareas, 2);
G_debug(3, "area = %d", area);
if (!Vect_area_alive(&Out, area))
continue;
ret = Vect_get_point_in_area(&Out, area, &x, &y);
if (ret < 0) {
G_warning(_("Cannot calculate area centroid"));
continue;
}
ret = point_in_buffer(arr_bc, &si, &Buf, x, y);
if (ret) {
Vect_reset_line(Points);
Vect_append_point(Points, x, y, 0.);
Vect_write_line(&Out, GV_CENTROID, Points, Cats);
}
}
/* free arr_bc[] */
/* will only slow down the module
for (i = 0; i < buffers_count; i++) {
Vect_destroy_line_struct(arr_bc[i].oPoints);
for (j = 0; j < arr_bc[i].inner_count; j++)
Vect_destroy_line_struct(arr_bc[i].iPoints[j]);
G_free(arr_bc[i].iPoints);
} */
Vect_spatial_index_destroy(&si);
Vect_close(&Buf);
Vect_delete(bufname);
G_set_verbose(verbose);
Vect_close(&In);
Vect_build_partial(&Out, GV_BUILD_NONE);
Vect_build(&Out);
Vect_close(&Out);
exit(EXIT_SUCCESS);
}