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// Copyright Contributors to the OpenVDB Project
// SPDX-License-Identifier: MPL-2.0
#include <openvdb/openvdb.h>
#include <openvdb/io/Stream.h>
#include "Viewer.h"
#include <boost/algorithm/string/classification.hpp> // for boost::is_any_of()
#include <boost/algorithm/string/predicate.hpp> // for boost::starts_with()
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <iostream>
#include <sstream>
#include <stdexcept>
#include <string>
#include <vector>
#if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32)
#include <unistd.h>
#endif
#include <stdio.h>
inline void
usage [[noreturn]] (const char* progName, int status)
{
(status == EXIT_SUCCESS ? std::cout : std::cerr) <<
"Usage: " << progName << " file.vdb [file.vdb ...] [options]\n" <<
"Which: displays OpenVDB grids\n" <<
"Options:\n" <<
" -i print grid information\n" <<
" -h, -help print this usage message and exit\n" <<
" -version print version information\n" <<
"\n" <<
"Controls:\n" <<
" Esc exit\n" <<
" -> (Right) show next grid\n" <<
" <- (Left) show previous grid\n" <<
" 1 toggle tree topology view on/off\n" <<
" 2 toggle surface view on/off\n" <<
" 3 toggle data view on/off\n" <<
" G (\"geometry\") look at center of geometry\n" <<
" H (\"home\") look at origin\n" <<
" I toggle on-screen grid info on/off\n" <<
" left mouse tumble\n" <<
" right mouse pan\n" <<
" mouse wheel zoom\n" <<
"\n" <<
" X + wheel move right cut plane\n" <<
" Shift + X + wheel move left cut plane\n" <<
" Y + wheel move top cut plane\n" <<
" Shift + Y + wheel move bottom cut plane\n" <<
" Z + wheel move front cut plane\n" <<
" Shift + Z + wheel move back cut plane\n" <<
" Ctrl + X + wheel move both X cut planes\n" <<
" Ctrl + Y + wheel move both Y cut planes\n" <<
" Ctrl + Z + wheel move both Z cut planes\n";
exit(status);
}
////////////////////////////////////////
int
main(int argc, char *argv[])
{
const char* progName = argv[0];
if (const char* ptr = ::strrchr(progName, '/')) progName = ptr + 1;
int status = EXIT_SUCCESS;
try {
openvdb::initialize();
openvdb::logging::initialize(argc, argv);
bool printInfo = false, printGLInfo = false, printVersionInfo = false;
// Parse the command line.
std::vector<std::string> filenames;
for (int n = 1; n < argc; ++n) {
std::string str(argv[n]);
if (str[0] != '-') {
filenames.push_back(str);
} else if (str == "-i") {
printInfo = true;
} else if (str == "-d") { // deprecated
printGLInfo = true;
} else if (str == "-h" || str == "-help" || str == "--help") {
usage(progName, EXIT_SUCCESS);
} else if (str == "-version" || str == "--version") {
printVersionInfo = true;
printGLInfo = true;
} else {
usage(progName, EXIT_FAILURE);
}
}
#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
const bool hasInput = false;
#else
const bool hasInput = !isatty(fileno(stdin));
#endif
const size_t numFiles = filenames.size();
if (printVersionInfo) {
std::cout << "OpenVDB library version: "
<< openvdb::getLibraryAbiVersionString() << "\n";
std::cout << "OpenVDB file format version: "
<< openvdb::OPENVDB_FILE_VERSION << std::endl;
// If there are no files to view, don't print the OpenGL version,
// since that would require opening a viewer window.
if (!hasInput && numFiles == 0) return EXIT_SUCCESS;
}
if (!hasInput && numFiles == 0 && !printGLInfo) usage(progName, EXIT_FAILURE);
openvdb_viewer::Viewer viewer = openvdb_viewer::init(progName, /*bg=*/false);
if (printGLInfo) {
// Now that the viewer window is open, we can get the OpenGL version, if requested.
if (!printVersionInfo) {
// Preserve the behavior of the deprecated -d option.
std::cout << viewer.getVersionString() << std::endl;
} else {
// Print OpenGL and GLFW versions.
std::ostringstream ostr;
ostr << viewer.getVersionString(); // returns comma-separated list of versions
const std::string s = ostr.str();
std::vector<std::string> elems;
boost::split(elems, s, boost::algorithm::is_any_of(","));
for (size_t i = 0; i < elems.size(); ++i) {
boost::trim(elems[i]);
// Don't print the OpenVDB library version again.
if (!boost::starts_with(elems[i], "OpenVDB:")) {
std::cout << elems[i] << std::endl;
}
}
}
if (!hasInput && numFiles == 0) return EXIT_SUCCESS;
}
std::string indent(numFiles == 1 ? "" : " ");
auto print_info = [&](openvdb::GridPtrVecPtr grids){
for (size_t i = 0; i < grids->size(); ++i) {
const std::string name = (*grids)[i]->getName();
openvdb::Coord dim = (*grids)[i]->evalActiveVoxelDim();
std::cout << indent << (name.empty() ? "<unnamed>" : name)
<< " (" << dim[0] << " x " << dim[1] << " x " << dim[2]
<< " voxels)" << std::endl;
}
};
openvdb::GridCPtrVec allGrids;
// Load VDB grids from stdin stream
if (hasInput) {
openvdb::io::Stream s(std::cin);
openvdb::GridPtrVecPtr grids = s.getGrids();
if (printInfo) print_info(grids);
allGrids.insert(allGrids.end(), grids->begin(), grids->end());
}
// Load VDB grid from files.
for (size_t n = 0; n < numFiles; ++n) {
openvdb::io::File file(filenames[n]);
file.open();
openvdb::GridPtrVecPtr grids = file.getGrids();
if (grids->empty()) {
OPENVDB_LOG_WARN(filenames[n] << " is empty");
continue;
}
allGrids.insert(allGrids.end(), grids->begin(), grids->end());
if (printInfo) {
if (numFiles > 1) std::cout << filenames[n] << ":\n";
print_info(grids);
}
}
viewer.open();
viewer.view(allGrids);
openvdb_viewer::exit();
} catch (const char* s) {
OPENVDB_LOG_FATAL(s);
status = EXIT_FAILURE;
} catch (std::exception& e) {
OPENVDB_LOG_FATAL(e.what());
status = EXIT_FAILURE;
} catch (...) {
OPENVDB_LOG_FATAL("Exception caught (unexpected type)");
std::terminate();
}
return status;
}
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