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sceneconverter: support chaining converters.

pull/445/head
Vladimír Vondruš 6 years ago
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7100e3b6d8
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749ae985b1
1 changed files with 92 additions and 24 deletions
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  1. 116
      src/Magnum/MeshTools/sceneconverter.cpp

116
src/Magnum/MeshTools/sceneconverter.cpp
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@ -64,9 +64,10 @@ information.
@section magnum-sceneconverter-usage Usage
@code{.sh}
magnum-sceneconverter [-h|--help] [--importer IMPORTER] [--converter CONVERTER]
[--plugin-dir DIR] [-i|--importer-options key=val,key2=val2,…]
[-c|--converter-options key=val,key2=val2,…] [--info] [-v|--verbose]
magnum-sceneconverter [-h|--help] [--importer IMPORTER]
[--converter CONVERTER]... [--plugin-dir DIR]
[-i|--importer-options key=val,key2=val2,…]
[-c|--converter-options key=val,key2=val2,…]... [--info] [-v|--verbose]
[--profile] [--] input output
@endcode
@ -77,13 +78,12 @@ Arguments:
- `-h`, `--help` --- display this help message and exit
- `--importer IMPORTER` --- scene importer plugin (default:
@ref Trade::AnySceneImporter "AnySceneImporter")
- `--converter CONVERTER` --- scene converter plugin (default:
@ref Trade::AnyImageConverter "AnySceneConverter")
- `--converter CONVERTER` --- scene converter plugin(s)
- `--plugin-dir DIR` --- override base plugin dir
- `-i`, `--importer-options key=val,key2=val2,…` --- configuration options to
pass to the importer
- `-c`, `--converter-options key=val,key2=val2,…` --- configuration options
to pass to the converter
to pass to the converter(s)
- `--info` --- print info about the input file and exit
- `-v`, `--verbose` --- verbose output from importer plugins
- `--profile` --- measure import and conversion time
@ -97,6 +97,32 @@ converter plugin configuration. If the `=` character is omitted, it's
equivalent to saying `key=true`; configuration subgroups are delimited with
`/`.
It's possible to specify the `--converter` option (and correspondingly also
`-c` / `--converter-options`) multiple times in order to chain more converters
together. All converters in the chain have to support the
@ref Trade::SceneConverterFeature::ConvertMesh feature,
the last converter either @ref Trade::SceneConverterFeature::ConvertMesh or
@ref Trade::SceneConverterFeature::ConvertMeshToFile. If the last converter
doesn't support conversion to a file,
@ref Trade::AnySceneConverter "AnySceneConverter" is used to save its output;
if no `--converter` is specified, @ref Trade::AnySceneConverter "AnySceneConverter"
is used.
@section magnum-sceneconverter-example Example usage
Printing info about all meshes in a glTF file:
@code{.sh}
magnum-sceneconverter --info scene.gltf
@endcode
Converting an OBJ file to a PLY, using @ref Trade::StanfordSceneConverter "StanfordSceneConverter"
picked by @ref Trade::AnySceneConverter "AnySceneConverter":
@code{.sh}
magnum-sceneconverter chair.obj chair.ply
@endcode
@see @ref magnum-imageconverter
*/
@ -125,10 +151,10 @@ int main(int argc, char** argv) {
args.addArgument("input").setHelp("input", "input file")
.addArgument("output").setHelp("output", "output file")
.addOption("importer", "AnySceneImporter").setHelp("importer", "scene importer plugin")
.addOption("converter", "AnySceneConverter").setHelp("converter", "scene converter plugin")
.addArrayOption("converter").setHelp("converter", "scene converter plugin(s)")
.addOption("plugin-dir").setHelp("plugin-dir", "override base plugin dir", "DIR")
.addOption('i', "importer-options").setHelp("importer-options", "configuration options to pass to the importer", "key=val,key2=val2,…")
.addOption('c', "converter-options").setHelp("converter-options", "configuration options to pass to the converter", "key=val,key2=val2,…")
.addArrayOption('c', "converter-options").setHelp("converter-options", "configuration options to pass to the converter(s)", "key=val,key2=val2,…")
.addBooleanOption("info").setHelp("info", "print info about the input file and exit")
.addBooleanOption('v', "verbose").setHelp("verbose", "verbose output from importer and converter plugins")
.addBooleanOption("profile").setHelp("profile", "measure import and conversion time")
@ -148,7 +174,14 @@ images present in the file.
The -i / --importer-options and -c / --converter-options arguments accept a
comma-separated list of key/value pairs to set in the importer / converter
plugin configuration. If the = character is omitted, it's equivalent to saying
key=true; configuration subgroups are delimited with /.)")
key=true; configuration subgroups are delimited with /.
It's possible to specify the --converter option (and correspondingly also
-c / --converter-options) multiple times in order to chain more converters
together. All converters in the chain have to support the ConvertMesh feature,
the last converter either ConvertMesh or ConvertMeshToFile. If the last
converter doesn't support conversion to a file, AnySceneConverter is used to
save its output; if no --converter is specified, AnySceneConverter is used.)")
.parse(argc, argv);
PluginManager::Manager<Trade::AbstractImporter> importerManager{
@ -315,24 +348,59 @@ key=true; configuration subgroups are delimited with /.)")
PluginManager::Manager<Trade::AbstractSceneConverter> converterManager{
args.value("plugin-dir").empty() ? std::string{} :
Utility::Directory::join(args.value("plugin-dir"), Trade::AbstractSceneConverter::pluginSearchPaths()[0])};
Containers::Pointer<Trade::AbstractSceneConverter> converter = converterManager.loadAndInstantiate(args.value("converter"));
if(!converter) {
Debug{} << "Available converter plugins:" << Utility::String::join(converterManager.aliasList(), ", ");
return 2;
}
/* Set options, if passed */
if(args.isSet("verbose")) converter->setFlags(Trade::SceneConverterFlag::Verbose);
Trade::Implementation::setOptions(*converter, args.value("converter-options"));
std::chrono::high_resolution_clock::duration conversionTime;
/* Save output file */
{
Duration d{conversionTime};
if(!converter->convertToFile(args.value("output"), *mesh)) {
Error{} << "Cannot save file" << args.value("output");
return 5;
/* Assume there's always one passed --converter option less, and the last
is implicitly AnySceneConverter. All converters except the last one are
expected to support ConvertMesh and the mesh is "piped" from one to the
other. If the last converter supports ConvertMeshToFile instead of
ConvertMesh, it's used instead of the last implicit AnySceneConverter. */
for(std::size_t i = 0, converterCount = args.arrayValueCount("converter"); i <= converterCount; ++i) {
const std::string converterName = i == converterCount ?
"AnySceneConverter" : args.arrayValue("converter", i);
Containers::Pointer<Trade::AbstractSceneConverter> converter = converterManager.loadAndInstantiate(converterName);
if(!converter) {
Debug{} << "Available converter plugins:" << Utility::String::join(converterManager.aliasList(), ", ");
return 2;
}
/* Set options, if passed */
if(args.isSet("verbose")) converter->setFlags(Trade::SceneConverterFlag::Verbose);
if(i < args.arrayValueCount("converter-options"))
Trade::Implementation::setOptions(*converter, args.arrayValue("converter-options", i));
/* This is the last --converter (or the implicit AnySceneConverter at
the end), output to a file and exit the loop */
if(i + 1 >= converterCount && (converter->features() & Trade::SceneConverterFeature::ConvertMeshToFile)) {
if(converterCount > 1 && args.isSet("verbose"))
Debug{} << "Saving output with" << converterName << Debug::nospace << "...";
Duration d{conversionTime};
if(!converter->convertToFile(args.value("output"), *mesh)) {
Error{} << "Cannot save file" << args.value("output");
return 5;
}
break;
/* This is not the last converter, expect that it's capable of
ConvertMesh */
} else {
CORRADE_INTERNAL_ASSERT(i < converterCount);
if(converterCount > 1 && args.isSet("verbose"))
Debug{} << "Processing (" << Debug::nospace << (i+1) << Debug::nospace << "/" << Debug::nospace << converterCount << Debug::nospace << ") with" << converterName << Debug::nospace << "...";
if(!(converter->features() & Trade::SceneConverterFeature::ConvertMesh)) {
Error{} << converterName << "doesn't support mesh conversion, only" << converter->features();
return 6;
}
Duration d{conversionTime};
if(!(mesh = converter->convert(*mesh))) {
Error{} << converterName << "cannot convert the mesh";
return 7;
}
}
}

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