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I extended shape-decode even further based on Ralf's line feature patch. With

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my patch it is possible to store line width as an attribute in the shape file
itself. This comes especially handy with rivers which can gradually broaden
that way.
This commit is contained in:
curt 2005-11-12 00:17:58 +00:00
parent dde5a64a75
commit a417092df1
1 changed files with 27 additions and 4 deletions
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29
src/Prep/ShapeFile/shape-decode.cxx
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@ -1,12 +1,14 @@
// main.cxx -- process shapefiles and extract polygon outlines,
// lines and points, clipping against and sorting
// them into the revelant tiles.
// them into the relevant tiles.
//
// Written by Curtis Olson, started February 1999.
// Modified by Ralf Gerlich, August 2005.
// Modified by Thomas Foerster, November 2005.
//
// Copyright (C) 1999 Curtis L. Olson - http://www.flightgear.org/~curt
// Copyright (C) 2005 Ralf Gerlich - http://home.easylink.de/rgerlich
// Copyright (C) 2005 Thomas Foerster
//
// 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
@ -53,6 +55,7 @@ map<string,string> area_code_map;
int use_area_code_map=0;
int continue_on_errors=0;
int area_column=4,code_column=3;
int width_column=-1;
void load_noaa_area_codes() {
area_code_map["Urban (1990 Enhanced)"]="Urban";
@ -224,6 +227,13 @@ AreaType get_shapefile_type(DBFHandle& hDBF, int rec) {
return get_area_type( area );
}
// get attribute value of 'width' from shapefile
int get_shapefile_width(DBFHandle& hDBF, int rec) {
string wstring = DBFReadStringAttribute( hDBF, rec, width_column );
SG_LOG( SG_GENERAL, SG_DEBUG, "wstring = " << wstring );
return atoi(wstring.c_str());
}
void processPolygon(SHPObject* psShape,
const string& work_dir,
AreaType area,
@ -349,6 +359,7 @@ void usage(char* progname) {
SG_LOG( SG_GENERAL, SG_ALERT, "Usage: " << progname
<< " [--line-width width] [--point-width width]"
" [--area-column col] [--code-col col]"
" [--line-width-column col ] "
" [--continue-on-errors]"
" <shape_file> <work_dir> [ area_string ]" );
exit(-1);
@ -356,7 +367,7 @@ void usage(char* progname) {
int main( int argc, char **argv ) {
int i, j;
int pointwidth=500,linewidth=50;
int pointwidth=500, linewidth=50, force_linewidth=-1;
char* progname=argv[0];
SGPath programPath(progname);
string force_area_type = "";
@ -374,7 +385,7 @@ int main( int argc, char **argv ) {
if (!strcmp(argv[1],"--line-width")) {
if (argc<3)
usage(progname);
linewidth=atoi(argv[2]);
force_linewidth=atoi(argv[2]);
argv+=2;
argc-=2;
} else if (!strcmp(argv[1],"--point-width")) {
@ -395,6 +406,12 @@ int main( int argc, char **argv ) {
code_column=atoi(argv[2]);
argv+=2;
argc-=2;
} else if (!strcmp(argv[1],"--line-width-column")) {
if (argc<3)
usage(progname);
width_column=atoi(argv[2]);
argv+=2;
argc-=2;
} else if (!strcmp(argv[1],"--continue-on-errors")) {
continue_on_errors=1;
} else if (!strcmp(argv[1],"--help")) {
@ -516,6 +533,12 @@ int main( int argc, char **argv ) {
area = get_area_type( force_area_type );
}
if ( force_linewidth == -1) {
if (width_column != -1) // line width from shape file
linewidth = get_shapefile_width(hDBF, i);
} else
linewidth = force_linewidth;
SG_LOG( SG_GENERAL, SG_INFO, " record type = "
<< SHPTypeName(psShape->nSHPType) );
SG_LOG( SG_GENERAL, SG_INFO, " bounds = ("