OpenSpace/modules/globebrowsing/other/TileProviderManager.cpp

/*****************************************************************************************
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* OpenSpace                                                                             *
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* Copyright (c) 2014-2016                                                               *
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#include <modules/globebrowsing/other/tileprovidermanager.h>
#include <ghoul/logging/logmanager.h>

#include "cpl_minixml.h"


namespace {
    const std::string _loggerCat = "TileProviderManager";

    const std::string keyColorTextures = "ColorTextures";
    const std::string keyHeightMaps = "HeightMaps";
}


namespace openspace {

    ThreadPool TileProviderManager::tileRequestThreadPool(1);


    TileProviderManager::TileProviderManager(const ghoul::Dictionary& texDict){

        ghoul::Dictionary colorTexturesDict;
        texDict.getValue(keyColorTextures, colorTexturesDict);

        TileProviderInitData colorInitData;
        colorInitData.minimumPixelSize = 1024;
        colorInitData.threads = 1;
        colorInitData.cacheSize = 500;
        colorInitData.framesUntilRequestQueueFlush = 60;
        colorInitData.preprocessTiles = false;

        initTexures(_colorTextureProviders, colorTexturesDict, colorInitData);


        ghoul::Dictionary heightTexturesDict;
        texDict.getValue(keyHeightMaps, heightTexturesDict);

        TileProviderInitData heightInitData;
        heightInitData.minimumPixelSize = 64;
        heightInitData.threads = 1;
        heightInitData.cacheSize = 500;
        heightInitData.framesUntilRequestQueueFlush = 60;
        heightInitData.preprocessTiles = true;

        initTexures(_heightMapProviders, heightTexturesDict, heightInitData);
    }

    TileProviderManager::~TileProviderManager()
    {
    }

    void TileProviderManager::initTexures(std::vector<TileProviderWithName>& dest,
        const ghoul::Dictionary& texturesDict, const TileProviderInitData& initData)
    {

        // Create TileProviders for all color textures
        for (size_t i = 0; i < texturesDict.size(); i++) {
            std::string name, path;
            std::string dictKey = std::to_string(i + 1);
            ghoul::Dictionary texDict = texturesDict.value<ghoul::Dictionary>(dictKey);
            texDict.getValue("Name", name);
            texDict.getValue("FilePath", path);


            std::shared_ptr<TileProvider> tileProvider = initProvider(path, initData);

            bool enabled = dest.size() == 0; // Only enable first layer
            dest.push_back({ name, tileProvider, enabled });
        }
    }


    std::shared_ptr<TileProvider> TileProviderManager::initProvider(const std::string& file,
        const TileProviderInitData& initData)
    {
        std::shared_ptr<TileProvider> tileProvider;
        CPLXMLNode * node = CPLParseXMLFile(file.c_str());
        if (std::string(node->pszValue) == "OpenSpaceTemporalGDALDataset") {
            tileProvider = std::shared_ptr<TileProvider>(
                new TemporalTileProvider(file, initData));
            return tileProvider;
        }

        std::shared_ptr<TileDataset> tileDataset = std::shared_ptr<TileDataset>(
            new TileDataset(file, initData.minimumPixelSize, initData.preprocessTiles));

        std::shared_ptr<ThreadPool> threadPool = std::shared_ptr<ThreadPool>(
            new ThreadPool(1));

        std::shared_ptr<AsyncTileDataProvider> tileReader = std::shared_ptr<AsyncTileDataProvider>(
            new AsyncTileDataProvider(tileDataset, threadPool));

        std::shared_ptr<TileCache> tileCache = std::shared_ptr<TileCache>(new TileCache(initData.cacheSize));

        tileProvider = std::shared_ptr<TileProvider>(
            new CachingTileProvider(tileReader, tileCache, initData.framesUntilRequestQueueFlush));

        return tileProvider;
    }

    std::vector<TileProviderManager::TileProviderWithName>&
        TileProviderManager::heightMapProviders()
    {
        return _heightMapProviders;
    }

    std::vector<TileProviderManager::TileProviderWithName>&
        TileProviderManager::colorTextureProviders()
    {
        return _colorTextureProviders;
    }

    void TileProviderManager::prerender() {
        for (auto it = _colorTextureProviders.begin(); it != _colorTextureProviders.end(); it++) {
            if (it->isActive) {
                it->tileProvider->prerender();
            }
        }

        for (auto it = _heightMapProviders.begin(); it != _heightMapProviders.end(); it++){
            if (it->isActive) {
                it->tileProvider->prerender();
            }
        }
    }


    const std::vector<std::shared_ptr<TileProvider> >
        TileProviderManager::getActiveHeightMapProviders()
    {
        std::vector<std::shared_ptr<TileProvider> > tileProviders;
        for (auto it = _heightMapProviders.begin(); it != _heightMapProviders.end(); it++)
        {
            if (it->isActive) {
                tileProviders.push_back(it->tileProvider);
            }
        }
        return tileProviders;
    }

    const std::vector<std::shared_ptr<TileProvider> >
        TileProviderManager::getActiveColorTextureProviders()
    {
        std::vector<std::shared_ptr<TileProvider> > tileProviders;
        for (auto it = _colorTextureProviders.begin(); it != _colorTextureProviders.end(); it++)
        {
            if (it->isActive) {
                tileProviders.push_back(it->tileProvider);
            }
        }
        return tileProviders;
    }


}  // namespace openspace