<![CDATA[
#include <string>
#include <fstream>
#include <iostream>
using namespace std;
typedef unsigned char byte;
int read_binvox(string filespec)
{
ifstream *input = new ifstream(filespec.c_str(), ios::in | ios::binary);
//
// read header
//
string line;
*input >> line; // #binvox
if (line.compare("#binvox") != 0) {
cout << "Error: first line reads [" << line << "] instead of [#binvox]" << endl;
delete input;
return 0;
}
int version;
*input >> version;
cout << "reading binvox version " << version << endl;
int depth, height, width;
depth = -1;
int done = 0;
while(input->good() && !done) {
*input >> line;
if (line.compare("data") == 0) done = 1;
else if (line.compare("dim") == 0) {
*input >> depth >> height >> width;
}
else {
cout << " unrecognized keyword [" << line << "], skipping" << endl;
char c;
do { // skip until end of line
c = input->get();
} while(input->good() && (c != '\n'));
}
}
if (!done) {
cout << " error reading header" << endl;
return 0;
}
if (depth == -1) {
cout << " missing dimensions in header" << endl;
return 0;
}
int size = width * height * depth;
byte *voxels = new byte[size];
if (!voxels) {
cout << " error allocating memory" << endl;
return 0;
}
//
// read voxel data
//
byte value;
byte count;
int index = 0;
int end_index = 0;
int nr_voxels = 0;
input->unsetf(ios::skipws); // need to read every byte now (!)
*input >> value; // read the linefeed char
while((end_index < size) && input->good()) {
*input >> value >> count;
if (input->good()) {
end_index = index + count;
if (end_index > size) return 0;
for(int i=index; i < end_index; i++) voxels[i] = value;
if (value) nr_voxels += count;
index = end_index;
} // if file still ok
} // while
input->close();
cout << " read " << nr_voxels << " voxels" << endl;
return 1;
}
]]>
Patrick Min
Last modified: Fri Jun 16 14:39:06 EDT 2006