void buf2grid(int step, agg::grid_rendering_buffer& buf) {
std::ostringstream s("");
s << "{ \"grid\":\n[\n";
for (unsigned y = 0; y < buf.height(); y=y+step)
{
agg::grid_value* row = buf.row(y);
s << "\"";
for (unsigned x = 0; x < buf.width(); x=x+step)
{
//s << "'" << (int)row[x] << "'";
agg::grid_value val = (agg::grid_value)row[x];
if (val == 0)
s << " ";
else
s << val;
//s << (int)row[x*4];
//s << row[x];
}
s << "\",\n";
}
s << "]\n}";
std::clog << s.str() << "\n";
}
std::wstring buf2grid_as_string(int step, agg::grid_rendering_buffer& buf) {
std::wostringstream s(L"");
s << "\"grid\":[";
for (unsigned y = 0; y < buf.height(); y=y+step)
{
agg::grid_value* row = buf.row(y);
s << "\"";
for (unsigned x = 0; x < buf.width(); x=x+step)
{
agg::grid_value val = (agg::grid_value)row[x];
if (val < 0) {
s << " ";}
else {
s << val;
}
}
s << "\"";
if(y < buf.height()-step) {
s << ",";
}
}
s << "]";
return s.str();
}