magnum/src/Magnum/Trade/AbstractSceneConverter.cpp

/*
    This file is part of Magnum.

    Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
                2020 Vladimír Vondruš <mosra@centrum.cz>

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.
*/

#include "AbstractSceneConverter.h"

#include <Corrade/Containers/Array.h>
#include <Corrade/Containers/EnumSet.hpp>
#include <Corrade/Containers/Optional.h>
#include <Corrade/Utility/DebugStl.h>
#include <Corrade/Utility/Directory.h>

#include "Magnum/Trade/ArrayAllocator.h"
#include "Magnum/Trade/MeshData.h"

#ifndef CORRADE_PLUGINMANAGER_NO_DYNAMIC_PLUGIN_SUPPORT
#include "Magnum/Trade/configure.h"
#endif

namespace Magnum { namespace Trade {

std::string AbstractSceneConverter::pluginInterface() {
    return "cz.mosra.magnum.Trade.AbstractSceneConverter/0.1";
}

#ifndef CORRADE_PLUGINMANAGER_NO_DYNAMIC_PLUGIN_SUPPORT
std::vector<std::string> AbstractSceneConverter::pluginSearchPaths() {
    return PluginManager::implicitPluginSearchPaths(
        #ifndef MAGNUM_BUILD_STATIC
        Utility::Directory::libraryLocation(&pluginInterface),
        #else
        {},
        #endif
        #ifdef CORRADE_IS_DEBUG_BUILD
        MAGNUM_PLUGINS_SCENECONVERTER_DEBUG_DIR,
        #else
        MAGNUM_PLUGINS_SCENECONVERTER_DIR,
        #endif
        #ifdef CORRADE_IS_DEBUG_BUILD
        "magnum-d/"
        #else
        "magnum/"
        #endif
        "sceneconverters");
}
#endif

AbstractSceneConverter::AbstractSceneConverter() = default;

AbstractSceneConverter::AbstractSceneConverter(PluginManager::Manager<AbstractSceneConverter>& manager): PluginManager::AbstractManagingPlugin<AbstractSceneConverter>{manager} {}

AbstractSceneConverter::AbstractSceneConverter(PluginManager::AbstractManager& manager, const std::string& plugin): PluginManager::AbstractManagingPlugin<AbstractSceneConverter>{manager, plugin} {}

SceneConverterFeatures AbstractSceneConverter::features() const {
    const SceneConverterFeatures features = doFeatures();
    CORRADE_ASSERT(features, "Trade::AbstractSceneConverter::features(): implementation reported no features", {});
    return features;
}

void AbstractSceneConverter::setFlags(SceneConverterFlags flags) {
    _flags = flags;
    doSetFlags(flags);
}

void AbstractSceneConverter::doSetFlags(SceneConverterFlags) {}

Containers::Optional<MeshData> AbstractSceneConverter::convert(const MeshData& mesh) {
    CORRADE_ASSERT(features() & SceneConverterFeature::ConvertMesh,
        "Trade::AbstractSceneConverter::convert(): mesh conversion not supported", {});

    Containers::Optional<MeshData> out = doConvert(mesh);
    CORRADE_ASSERT(!out || (
        (!out->_indexData.deleter() || out->_indexData.deleter() == Implementation::nonOwnedArrayDeleter || out->_indexData.deleter() == ArrayAllocator<char>::deleter) &&
        (!out->_vertexData.deleter() || out->_vertexData.deleter() == Implementation::nonOwnedArrayDeleter || out->_vertexData.deleter() == ArrayAllocator<char>::deleter) &&
        (!out->_attributes.deleter() || out->_attributes.deleter() == reinterpret_cast<void(*)(MeshAttributeData*, std::size_t)>(Implementation::nonOwnedArrayDeleter))),
        "Trade::AbstractSceneConverter::convert(): implementation is not allowed to use a custom Array deleter", {});
    return out;
}

Containers::Optional<MeshData> AbstractSceneConverter::doConvert(const MeshData&) {
    CORRADE_ASSERT_UNREACHABLE("Trade::AbstractSceneConverter::convert(): mesh conversion advertised but not implemented", {});
}

bool AbstractSceneConverter::convertInPlace(MeshData& mesh) {
    CORRADE_ASSERT(features() & SceneConverterFeature::ConvertMeshInPlace,
        "Trade::AbstractSceneConverter::convertInPlace(): mesh conversion not supported", {});

    return doConvertInPlace(mesh);
}

bool AbstractSceneConverter::doConvertInPlace(MeshData&) {
    CORRADE_ASSERT_UNREACHABLE("Trade::AbstractSceneConverter::convertInPlace(): mesh conversion advertised but not implemented", {});
}

Containers::Array<char> AbstractSceneConverter::convertToData(const MeshData& mesh) {
    CORRADE_ASSERT(features() & SceneConverterFeature::ConvertMeshToData,
        "Trade::AbstractSceneConverter::convertToData(): mesh conversion not supported", {});

    Containers::Array<char> out = doConvertToData(mesh);
    CORRADE_ASSERT(!out || !out.deleter() || out.deleter() == Implementation::nonOwnedArrayDeleter || out.deleter() == ArrayAllocator<char>::deleter,
        "Trade::AbstractSceneConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
    return out;
}

Containers::Array<char> AbstractSceneConverter::doConvertToData(const MeshData&) {
    CORRADE_ASSERT_UNREACHABLE("Trade::AbstractSceneConverter::convertToData(): mesh conversion advertised but not implemented", {});
}

bool AbstractSceneConverter::convertToFile(const std::string& filename, const MeshData& mesh) {
    CORRADE_ASSERT(features() >= SceneConverterFeature::ConvertMeshToFile,
        "Trade::AbstractSceneConverter::convertToFile(): mesh conversion not supported", {});

    return doConvertToFile(filename, mesh);
}

bool AbstractSceneConverter::doConvertToFile(const std::string& filename, const MeshData& mesh) {
    CORRADE_ASSERT(features() >= SceneConverterFeature::ConvertMeshToData, "Trade::AbstractSceneConverter::convertToFile(): mesh conversion advertised but not implemented", false);

    const auto data = doConvertToData(mesh);
    /* No deleter checks as it doesn't matter here */
    if(!data) return false;

    /* Open file */
    if(!Utility::Directory::write(filename, data)) {
        Error() << "Trade::AbstractSceneConverter::convertToFile(): cannot write to file" << filename;
        return false;
    }

    return true;
}

Debug& operator<<(Debug& debug, const SceneConverterFeature value) {
    debug << "Trade::SceneConverterFeature" << Debug::nospace;

    switch(value) {
        /* LCOV_EXCL_START */
        #define _c(v) case SceneConverterFeature::v: return debug << "::" #v;
        _c(ConvertMesh)
        _c(ConvertMeshInPlace)
        _c(ConvertMeshToData)
        _c(ConvertMeshToFile)
        #undef _c
        /* LCOV_EXCL_STOP */
    }

    return debug << "(" << Debug::nospace << reinterpret_cast<void*>(UnsignedByte(value)) << Debug::nospace << ")";
}

Debug& operator<<(Debug& debug, const SceneConverterFeatures value) {
    return Containers::enumSetDebugOutput(debug, value, "Trade::SceneConverterFeatures{}", {
        SceneConverterFeature::ConvertMesh,
        SceneConverterFeature::ConvertMeshInPlace,
        SceneConverterFeature::ConvertMeshToData,
        /* Implied by ConvertMeshToData, has to be after */
        SceneConverterFeature::ConvertMeshToFile});
}

Debug& operator<<(Debug& debug, const SceneConverterFlag value) {
    debug << "Trade::SceneConverterFlag" << Debug::nospace;

    switch(value) {
        /* LCOV_EXCL_START */
        #define _c(v) case SceneConverterFlag::v: return debug << "::" #v;
        _c(Verbose)
        #undef _c
        /* LCOV_EXCL_STOP */
    }

    return debug << "(" << Debug::nospace << reinterpret_cast<void*>(UnsignedByte(value)) << Debug::nospace << ")";
}

Debug& operator<<(Debug& debug, const SceneConverterFlags value) {
    return Containers::enumSetDebugOutput(debug, value, "Trade::SceneConverterFlags{}", {
        SceneConverterFlag::Verbose});
}

}}