OpenSpace/modules/iswa/rendering/screenspacecygnet.cpp

/*****************************************************************************************
*                                                                                       *
* OpenSpace                                                                             *
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* Copyright (c) 2014-2016                                                               *
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#include <modules/iswa/rendering/screenspacecygnet.h>
#include <ghoul/io/texture/texturereader.h>
#include <ghoul/filesystem/filesystem>
#include <openspace/util/time.h>
#include <modules/iswa/util/iswamanager.h>

namespace {
    const std::string _loggerCat = "ScreenSpaceCygnet";
}

namespace openspace {

ScreenSpaceCygnet::ScreenSpaceCygnet(const ghoul::Dictionary& dictionary)
    : ScreenSpaceImage(dictionary)
    , _updateInterval("updateInterval", "Update Interval", 1.0, 0.0 , 10.0)
{
    // hacky, have to first get as float and then cast to int.
    float cygnetid;
    dictionary.getValue("CygnetId", cygnetid);
    _cygnetId = (int)cygnetid;
    
    float interval;
    dictionary.getValue("UpdateInterval", interval);
    _updateTime = (int) interval;
    // setName("iSWACygnet" + std::to_string(_cygnetId));
    // addProperty(_updateInterval);

    _updateRealWorldTime = (_updateTime == 0);
    if(_updateRealWorldTime){
        _minRealTimeUpdateInterval = 1000;
    }else{
        _minRealTimeUpdateInterval = 100;
    }

    _downloadImage = true;

    _url = IswaManager::ref().iswaUrl(_cygnetId);
        
    _openSpaceTime = Time::ref().currentTime();
    _lastUpdateOpenSpaceTime = _openSpaceTime;

    _realTime = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch());
    _lastUpdateRealTime = _realTime;

}

ScreenSpaceCygnet::~ScreenSpaceCygnet(){}

void ScreenSpaceCygnet::update(){
    _openSpaceTime = Time::ref().currentTime();
    _realTime = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch());

    bool timeToUpdate;

    if(_updateRealWorldTime){
        timeToUpdate = (((_realTime.count()-_lastUpdateRealTime.count()) > _minRealTimeUpdateInterval) &&
                        Time::ref().deltaTime() != 0);
    }else{
        timeToUpdate =  (fabs(_openSpaceTime-_lastUpdateOpenSpaceTime) >= _updateTime &&
                        (_realTime.count()-_lastUpdateRealTime.count()) > _minRealTimeUpdateInterval);
    }

    if((Time::ref().timeJumped() || timeToUpdate )){
        _url = IswaManager::ref().iswaUrl(_cygnetId);
        updateTexture();
        _lastUpdateRealTime = _realTime;
        _lastUpdateOpenSpaceTime = _openSpaceTime;
    }

    if(_futureImage.valid() && DownloadManager::futureReady(_futureImage)) {
        loadTexture();
    }
}
}