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// Applies translation and scaling to an OFF object.
#include <CGAL/Simple_cartesian.h>
#include <CGAL/IO/Verbose_ostream.h>
#include <CGAL/IO/OFF.h>
#include <cstddef>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <fstream>
using namespace std;
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
bool verbose = false;
bool binary = false;
bool skel = false;
bool noc = false;
double transx = 0.0;
double transy = 0.0;
double transz = 0.0;
double scale = 1.0;
// main function with standard unix commandline arguments
// ------------------------------------------------------
int main( int argc, char **argv)
{
int n = 0; // number of filenames
char *filename[2];
bool help = false;
for (int i = 1; i < argc; i++) { // check commandline options
if ( strcmp( "-v", argv[i]) == 0)
verbose = true;
else if ( strcmp( "-b", argv[i]) == 0)
binary = true;
else if ( strcmp( "-skel", argv[i]) == 0)
skel = true;
else if ( strcmp( "-noc", argv[i]) == 0)
noc = true;
else if ( strcmp( "-scale", argv[i]) == 0) {
i++;
if ( i < argc) {
scale = atof( argv[i]);
} else {
cerr << argv[0] << ": error: -scale needs a double parameter."
<< endl;
help = true;
}
} else if ( strcmp( "-trans", argv[i]) == 0) {
i++;
if ( i+2 < argc) {
transx = atof( argv[i]);
i++;
transy = atof( argv[i]);
i++;
transz = atof( argv[i]);
} else {
cerr << argv[0] << ": error: -trans needs three double "
"parameters." << endl;
help = true;
}
} else if ( (strcmp( "-h", argv[i]) == 0) ||
(strcmp( "-help", argv[i]) == 0))
help = true;
else if ( n < 2 ) {
filename[ n++] = argv[i];
} else {
++n;
break;
}
}
if ((n > 2) || help) {
if ( ! help)
cerr << "Error: in parameter list" << endl;
cerr << "Usage: " << argv[0] << " [<options>] [<infile> [<outfile>]]"
<< endl;
cerr << " transforms coordinate values of an OFF object."
<< endl;
cerr << " -trans <x> <y> <y> translation." << endl;
cerr << " -scale <s> uniform scaling." << endl;
cerr << " -b binary (default is ASCII)."
<< endl;
cerr << " -skel Geomview SKEL format." << endl;
cerr << " -noc no comments in file." << endl;
cerr << " -v verbose." << endl;
exit( ! help);
}
CGAL::Verbose_ostream verr( verbose);
verr << argv[0] << ": verbosity on." << endl;
const char* name = "cin";
istream* p_in = &cin;
ifstream in;
if ( n > 0) {
in.open( filename[0]);
p_in = ∈
name = filename[0];
}
if ( ! * p_in) {
cerr << argv[0] << ": error: cannot open file '"<< name
<< "' for reading." <<endl;
exit( 1);
}
verr << "CGAL::File_scanner_OFF( " << name << ") ...." << endl;
CGAL::File_scanner_OFF scanner( * p_in);
if ( ! * p_in) {
cerr << argv[0] << ": error: file '"<< name
<< "' is not in OFF format." << endl;
std::abort();
}
verr << "CGAL::File_writer_OFF( ..." << endl;
const char* oname = "cout";
ostream* p_out = &cout;
ofstream out;
if ( n > 1) {
out.open( filename[1]);
p_out = &out;
oname = filename[1];
}
if ( !*p_out) {
cerr << argv[0] << ": error: cannot open file '"<< oname
<< "' for writing." <<endl;
exit( 1);
}
CGAL::File_header_OFF header( binary, noc, skel, verbose);
CGAL::File_writer_OFF writer( header);
writer.write_header( * p_out,
scanner.size_of_vertices(),
scanner.size_of_halfedges(),
scanner.size_of_facets());
Vector v( transx, transy, transz);
for ( std::size_t k = 0; k < scanner.size_of_vertices(); ++k) {
double x, y, z;
scanner.scan_vertex( x, y, z);
Point q( x, y, z);
q = q + v;
q = CGAL::ORIGIN + ( (q - CGAL::ORIGIN) * scale );
scanner.skip_to_next_vertex( k);
writer.write_vertex( q.x(), q.y(), q.z());
}
verr << " .... done." << scanner.size_of_vertices() << " points read."
<< endl;
if ( ! *p_in) {
cerr << argv[0] << " read error: while reading file '"<< name << "'."
<< endl;
exit( 1);
}
writer.write_facet_header();
* p_out << endl;
char c;
while ( (*p_in).get(c))
* p_out << c;
return 0;
}
// EOF //
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