Viewer::Viewer(const char* title, const FilePath& applicationPath, const FilePath& settingsFilePath):
m_Path(settingsFilePath.directory()),
m_Settings(applicationPath.file(), settingsFilePath),
m_WindowManager(m_Settings.m_WindowSize.x, m_Settings.m_WindowSize.y,
title),
m_GUI(applicationPath.file(), m_WindowManager),
m_ShaderManager(applicationPath.directory() + "shaders"),
m_GLImageRenderer(m_ShaderManager),
m_ViewController(m_WindowManager.getWindow()) {
std::clog << "applicationPath = " << applicationPath << std::endl;
std::clog << "settingsFilePath = " << settingsFilePath << std::endl;
initScene();
initConfigManager();
m_ViewController.setSpeed(m_Settings.m_fSpeedFarRatio * length(size(m_pScene->getBBox())));
std::clog << "Number of system threads = " << getSystemThreadCount() << std::endl;
m_RenderModule.setUp(m_Path,
m_Settings.m_pCacheRoot,
m_Settings.m_FramebufferSize);
{
// Load current config
auto pConfig = m_Settings.m_pCacheRoot->FirstChildElement("Config");
if(pConfig) {
std::string name;
if(getAttribute(*pConfig, "name", name)) {
try {
ProjectiveCamera camera;
m_ConfigManager.loadConfig(name, camera, *m_pScene,
m_Settings.m_FramebufferSize.x, m_Settings.m_FramebufferSize.y,
m_ZNearFar.x, m_ZNearFar.y);
m_nCurrentConfig = m_ConfigManager.getConfigIndex(name);
} catch(...) {
std::cerr << "Unable to load previously cached configuration" << std::endl;
}
}
} else {
auto configCount = m_ConfigManager.getConfigs().size();
if(configCount > 0u) {
ProjectiveCamera camera;
m_ConfigManager.loadConfig(0, camera, *m_pScene,
m_Settings.m_FramebufferSize.x, m_Settings.m_FramebufferSize.y,
m_ZNearFar.x, m_ZNearFar.y);
m_nCurrentConfig = 0;
} else {
LOG(INFO) << "No configs for the scene, the program might eventually crash.";
}
}
}
}
Viewer::Settings::Settings(const std::string& applicationName, const FilePath& filepath):
m_FilePath(filepath) {
if(tinyxml2::XML_NO_ERROR != m_Document.LoadFile(filepath.c_str())) {
throw std::runtime_error("Unable to load viewer settings file");
}
if(nullptr == (m_pRoot = m_Document.RootElement())) {
throw std::runtime_error("Invalid viewer settings file format (no root element)");
}
auto pWindow = m_pRoot->FirstChildElement("Window");
if(!pWindow) {
throw std::runtime_error("Invalid viewer settings file format (no Window element)");
}
if(!getAttribute(*pWindow, "width", m_WindowSize.x) ||
!getAttribute(*pWindow, "height", m_WindowSize.y)) {
throw std::runtime_error("Invalid viewer settings file format (no width/height params)");
}
auto pViewController = m_pRoot->FirstChildElement("ViewController");
if(pViewController) {
if(!getAttribute(*pViewController, "speedFarRatio", m_fSpeedFarRatio)) {
throw std::runtime_error("Invalid viewer settings file format (no speedFarRatio params in ViewController)");
}
}
auto pFramebuffer = m_pRoot->FirstChildElement("Framebuffer");
if(!getAttribute(*pFramebuffer, "width", m_FramebufferSize.x) ||
!getAttribute(*pFramebuffer, "height", m_FramebufferSize.y)) {
throw std::runtime_error("Invalid viewer settings file format (no width/height params for the framebuffer)");
}
m_fFramebufferRatio = float(m_FramebufferSize.x) / m_FramebufferSize.y;
auto cacheDirectory = filepath.directory() + "cache";
createDirectory(cacheDirectory);
m_CacheFilePath = cacheDirectory + (applicationName + ".cache.bnz.xml");
if(tinyxml2::XML_NO_ERROR != m_CacheDocument.LoadFile(m_CacheFilePath.c_str())) {
auto pRoot = m_CacheDocument.NewElement("Cache");
m_CacheDocument.InsertFirstChild(pRoot);
}
m_pCacheRoot = m_CacheDocument.RootElement();
}