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545 lines
20 KiB
C++
545 lines
20 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2021 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/exoplanets/exoplanetshelper.h>
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#include <openspace/engine/globals.h>
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#include <openspace/query/query.h>
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#include <openspace/scene/scenegraphnode.h>
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#include <openspace/scripting/scriptengine.h>
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#include <openspace/util/distanceconstants.h>
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#include <openspace/util/timeconversion.h>
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#include <openspace/util/timemanager.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/fmt.h>
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#include <ghoul/glm.h>
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#include <ghoul/logging/logmanager.h>
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#include <ghoul/misc/assert.h>
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#include <fstream>
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#include <sstream>
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namespace {
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constexpr const char* _loggerCat = "ExoplanetsModule";
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} // namespace
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namespace openspace::exoplanets::luascriptfunctions {
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constexpr const char* ExoplanetsGuiPath = "/Milky Way/Exoplanets/Exoplanet Systems/";
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constexpr const char* LookUpTablePath = "${SYNC}/http/exoplanets_data/1/lookup.txt";
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constexpr const char* ExoplanetsDataPath =
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"${SYNC}/http/exoplanets_data/1/exoplanets_data.bin";
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constexpr const char* StarTextureFile = "${SYNC}/http/exoplanets_textures/1/sun.jpg";
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constexpr const char* NoDataTextureFile =
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"${SYNC}/http/exoplanets_textures/1/grid-32.png";
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constexpr const char* DiscTextureFile =
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"${SYNC}/http/exoplanets_textures/1/disc_texture.png";
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ExoplanetSystem findExoplanetSystemInData(std::string_view starName) {
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ExoplanetSystem system;
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std::ifstream data(absPath(ExoplanetsDataPath), std::ios::in | std::ios::binary);
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if (!data.good()) {
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LERROR(fmt::format(
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"Failed to open exoplanets data file: '{}'", absPath(ExoplanetsDataPath)
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));
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return ExoplanetSystem();
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}
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std::ifstream lut(absPath(LookUpTablePath));
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if (!lut.good()) {
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LERROR(fmt::format(
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"Failed to open exoplanets look-up table: '{}'", absPath(LookUpTablePath)
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));
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return ExoplanetSystem();
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}
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// 1. search lut for the starname and return the corresponding location
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// 2. go to that location in the data file
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// 3. read sizeof(exoplanet) bytes into an exoplanet object.
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ExoplanetDataEntry p;
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std::string line;
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while (getline(lut, line)) {
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std::istringstream ss(line);
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std::string name;
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getline(ss, name, ',');
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if (name.substr(0, name.length() - 2) == starName) {
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std::string location_s;
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getline(ss, location_s);
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long location = std::stol(location_s.c_str());
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data.seekg(location);
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data.read(reinterpret_cast<char*>(&p), sizeof(ExoplanetDataEntry));
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sanitizeNameString(name);
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if (!hasSufficientData(p)) {
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LWARNING(fmt::format("Insufficient data for exoplanet: '{}'", name));
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continue;
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}
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system.planetNames.push_back(name);
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system.planetsData.push_back(p);
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// Star data - Should not vary between planets, but one data entry might
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// lack data for the host star while another does not. So for every planet,
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// update star data if needed
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const glm::vec3 pos{ p.positionX, p.positionY, p.positionZ };
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if (system.starData.position != pos && isValidPosition(pos)) {
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system.starData.position = pos;
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}
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if (system.starData.bvColorIndex != p.bmv && !std::isnan(p.bmv)) {
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system.starData.bvColorIndex = p.bmv;
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}
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if (system.starData.radius != p.rStar && !std::isnan(p.rStar)) {
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system.starData.radius = p.rStar;
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}
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}
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}
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system.starName = starName;
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return system;
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}
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void createExoplanetSystem(const std::string& starName) {
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const std::string starIdentifier = createIdentifier(starName);
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std::string sanitizedStarName = starName;
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sanitizeNameString(sanitizedStarName);
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const std::string guiPath = ExoplanetsGuiPath + sanitizedStarName;
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SceneGraphNode* existingStarNode = sceneGraphNode(starIdentifier);
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if (existingStarNode) {
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LERROR(fmt::format(
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"Adding of exoplanet system '{}' failed. The system has already been added",
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starName
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));
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return;
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}
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ExoplanetSystem system = findExoplanetSystemInData(starName);
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if (system.planetNames.empty()) {
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LERROR(fmt::format("Exoplanet system '{}' could not be found", starName));
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return;
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}
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const glm::vec3 starPosInParsec = system.starData.position;
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if (!isValidPosition(starPosInParsec)) {
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LERROR(fmt::format(
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"Insufficient data available for exoplanet system: '{}'. "
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"Could not determine star position", starName
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));
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return;
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}
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const glm::dvec3 starPos =
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static_cast<glm::dvec3>(starPosInParsec) * distanceconstants::Parsec;
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const glm::dmat3 exoplanetSystemRotation = computeSystemRotation(starPos);
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const float solarRadius = static_cast<float>(distanceconstants::SolarRadius);
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// Star
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float radiusInMeter = solarRadius;
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if (!std::isnan(system.starData.radius)) {
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radiusInMeter *= system.starData.radius;
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}
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std::string colorLayers;
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const float bv = system.starData.bvColorIndex;
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if (!std::isnan(bv)) {
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const glm::vec3 color = starColor(bv);
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colorLayers =
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"{"
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"Identifier = 'StarColor',"
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"Type = 'SolidColor',"
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"Color = " + ghoul::to_string(color) + ","
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"BlendMode = 'Normal',"
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"Enabled = true"
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"},"
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"{"
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"Identifier = 'StarTexture',"
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"FilePath = " +
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fmt::format("openspace.absPath('{}')", StarTextureFile) + ","
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"BlendMode = 'Color',"
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"Enabled = true"
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"}";
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}
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else {
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colorLayers =
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"{"
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"Identifier = 'NoDataStarTexture',"
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"FilePath = " +
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fmt::format("openspace.absPath('{}')", NoDataTextureFile) + ","
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"BlendMode = 'Color',"
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"Enabled = true"
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"}";
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}
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const std::string starGlobeRenderableString = "Renderable = {"
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"Type = 'RenderableGlobe',"
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"Radii = " + std::to_string(radiusInMeter) + ","
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"SegmentsPerPatch = 64,"
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"PerformShading = false,"
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"Layers = {"
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"ColorLayers = { " + colorLayers + "}"
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"}"
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"},";
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const std::string starParent = "{"
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"Identifier = '" + starIdentifier + "',"
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"Parent = 'SolarSystemBarycenter',"
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"" + starGlobeRenderableString + ""
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"Transform = {"
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"Rotation = {"
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"Type = 'StaticRotation',"
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"Rotation = " + ghoul::to_string(exoplanetSystemRotation) + ""
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"},"
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"Translation = {"
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"Type = 'StaticTranslation',"
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"Position = " + ghoul::to_string(starPos) + ""
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"}"
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"},"
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"Tag = {'exoplanet_system'},"
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"GUI = {"
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"Name = '" + sanitizedStarName + " (Star)',"
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"Path = '" + guiPath + "'"
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"}"
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"}";
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openspace::global::scriptEngine->queueScript(
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"openspace.addSceneGraphNode(" + starParent + ");",
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scripting::ScriptEngine::RemoteScripting::Yes
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);
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// Planets
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for (size_t i = 0; i < system.planetNames.size(); i++) {
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ExoplanetDataEntry planet = system.planetsData[i];
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const std::string planetName = system.planetNames[i];
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if (std::isnan(planet.ecc)) {
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planet.ecc = 0.f;
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}
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// KeplerTranslation requires angles in range [0, 360]
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auto validAngle = [](float angle, float defaultValue) {
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if (std::isnan(angle)) { return defaultValue; }
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if (angle < 0.f) { return angle + 360.f; }
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if (angle > 360.f) { return angle - 360.f; }
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return angle;
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};
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planet.i = validAngle(planet.i, 90.f);
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planet.bigOmega = validAngle(planet.bigOmega, 180.f);
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planet.omega = validAngle(planet.omega, 90.f);
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Time epoch;
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std::string sEpoch;
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if (!std::isnan(planet.tt)) {
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epoch.setTime("JD " + std::to_string(planet.tt));
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sEpoch = std::string(epoch.ISO8601());
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}
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else {
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sEpoch = "2009-05-19T07:11:34.080";
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}
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const float astronomicalUnit =
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static_cast<float>(distanceconstants::AstronomicalUnit);
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const float jupiterRadius = static_cast<float>(distanceconstants::JupiterRadius);
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float planetRadius;
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std::string enabled;
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if (std::isnan(planet.r)) {
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if (std::isnan(planet.rStar)) {
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planetRadius = planet.a * 0.001f * astronomicalUnit;
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}
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else {
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planetRadius = planet.rStar * 0.1f * solarRadius;
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}
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enabled = "false";
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}
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else {
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planetRadius = static_cast<float>(planet.r) * jupiterRadius;
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enabled = "true";
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}
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const float periodInSeconds = static_cast<float>(planet.per * SecondsPerDay);
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const float semiMajorAxisInMeter = planet.a * astronomicalUnit;
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const float semiMajorAxisInKm = semiMajorAxisInMeter * 0.001f;
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const std::string planetIdentifier = createIdentifier(planetName);
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const std::string planetKeplerTranslation = "{"
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"Type = 'KeplerTranslation',"
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"Eccentricity = " + std::to_string(planet.ecc) + ","
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"SemiMajorAxis = " + std::to_string(semiMajorAxisInKm) + ","
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"Inclination = " + std::to_string(planet.i) + ","
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"AscendingNode = " + std::to_string(planet.bigOmega) + ","
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"ArgumentOfPeriapsis = " + std::to_string(planet.omega) + ","
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"MeanAnomaly = 0.0,"
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"Epoch = '" + sEpoch + "'," //TT. JD to YYYY MM DD hh:mm:ss
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"Period = " + std::to_string(periodInSeconds) + ""
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"}";
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const std::string planetNode = "{"
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"Identifier = '" + planetIdentifier + "',"
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"Parent = '" + starIdentifier + "',"
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"Enabled = true,"
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"Renderable = {"
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"Type = 'RenderableGlobe',"
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"Enabled = " + enabled + ","
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"Radii = " + std::to_string(planetRadius) + "," // in meters
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"SegmentsPerPatch = 64,"
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"PerformShading = false,"
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"Layers = {}"
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"},"
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"Transform = { "
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"Translation = " + planetKeplerTranslation + ""
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"},"
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"GUI = {"
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"Name = '" + planetName + "',"
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"Path = '" + guiPath + "'"
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"}"
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"}";
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int trailResolution = 1000;
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// Increase the resolution for highly eccentric orbits
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const float eccentricityThreshold = 0.85f;
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if (planet.ecc > eccentricityThreshold) {
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trailResolution *= 2;
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}
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const std::string planetTrailNode = "{"
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"Identifier = '" + planetIdentifier + "_Trail',"
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"Parent = '" + starIdentifier + "',"
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"Enabled = true,"
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"Renderable = {"
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"Type = 'RenderableTrailOrbit',"
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"Period = " + std::to_string(planet.per) + ","
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"Resolution = " + std::to_string(trailResolution) + ","
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"Translation = " + planetKeplerTranslation + ","
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"Color = { 1, 1, 1 }"
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"},"
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"GUI = {"
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"Name = '" + planetName + " Trail',"
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"Path = '" + guiPath + "'"
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"}"
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"}";
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openspace::global::scriptEngine->queueScript(
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"openspace.addSceneGraphNode(" + planetTrailNode + ");"
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"openspace.addSceneGraphNode(" + planetNode + ");",
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scripting::ScriptEngine::RemoteScripting::Yes
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);
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bool hasUpperAUncertainty = !std::isnan(planet.aUpper);
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bool hasLowerAUncertainty = !std::isnan(planet.aLower);
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if (hasUpperAUncertainty && hasLowerAUncertainty) {
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// Get the orbit plane of the planet trail orbit from the KeplerTranslation
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const glm::dmat4 orbitPlaneRotationMatrix = computeOrbitPlaneRotationMatrix(
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planet.i,
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planet.bigOmega,
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planet.omega
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);
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const glm::dmat3 rotation = orbitPlaneRotationMatrix;
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const std::string discNode = "{"
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"Identifier = '" + planetIdentifier + "_Disc',"
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"Parent = '" + starIdentifier + "',"
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"Enabled = true,"
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"Renderable = {"
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"Type = 'RenderableOrbitDisc',"
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"Texture = openspace.absPath('" + DiscTextureFile + "'),"
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"Size = " + std::to_string(semiMajorAxisInMeter) + ","
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"Eccentricity = " + std::to_string(planet.ecc) + ","
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"Offset = { " +
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std::to_string(planet.aLower) + ", " +
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std::to_string(planet.aUpper) +
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"}," //min / max extend
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"Opacity = 0.3"
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"},"
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"Transform = {"
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"Rotation = {"
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"Type = 'StaticRotation',"
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"Rotation = " + ghoul::to_string(rotation) + ""
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"}"
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"},"
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"GUI = {"
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"Name = '" + planetName + " Disc',"
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"Path = '" + guiPath + "'"
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"}"
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"}";
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openspace::global::scriptEngine->queueScript(
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"openspace.addSceneGraphNode(" + discNode + ");",
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scripting::ScriptEngine::RemoteScripting::Yes
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);
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}
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}
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}
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int addExoplanetSystem(lua_State* L) {
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ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::addExoplanetSystem");
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const int t = lua_type(L, 1);
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if (t == LUA_TSTRING) {
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// The user provided a single name
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const std::string& starName = ghoul::lua::value<std::string>(L, 1);
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createExoplanetSystem(starName);
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}
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else if (t == LUA_TTABLE) {
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// A list of names was provided
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ghoul::Dictionary d;
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ghoul::lua::luaDictionaryFromState(L, d);
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for (size_t i = 1; i <= d.size(); ++i) {
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if (!d.hasValue<std::string>(std::to_string(i))) {
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return ghoul::lua::luaError(
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L, fmt::format("List item {} is of invalid type", i)
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);
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}
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const std::string& starName = d.value<std::string>(std::to_string(i));
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createExoplanetSystem(starName);
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}
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lua_pop(L, 1);
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}
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else {
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return ghoul::lua::luaError(L, "Invalid input");
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}
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lua_settop(L, 0);
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ghoul_assert(lua_gettop(L) == 0, "Incorrect number of items left on stack");
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return 0;
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}
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int removeExoplanetSystem(lua_State* L) {
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ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::removeExoplanetSystem");
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const int StringLocation = -1;
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const std::string starName = luaL_checkstring(L, StringLocation);
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const std::string starIdentifier = createIdentifier(starName);
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openspace::global::scriptEngine->queueScript(
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"openspace.removeSceneGraphNode('" + starIdentifier + "');",
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scripting::ScriptEngine::RemoteScripting::Yes
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);
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return 0;
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}
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std::vector<std::string> hostStarsWithSufficientData() {
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std::vector<std::string> names;
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std::string line;
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std::ifstream lookupTableFile(absPath(LookUpTablePath));
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if (!lookupTableFile.good()) {
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LERROR(fmt::format("Failed to open lookup table file '{}'", LookUpTablePath));
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return {};
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}
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std::ifstream data(absPath(ExoplanetsDataPath), std::ios::in | std::ios::binary);
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if (!data.good()) {
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LERROR(fmt::format("Failed to open data file '{}'", ExoplanetsDataPath));
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return {};
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}
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// Read number of lines
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int nExoplanets = 0;
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while (getline(lookupTableFile, line)) {
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++nExoplanets;
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}
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lookupTableFile.clear();
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lookupTableFile.seekg(0);
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names.reserve(nExoplanets);
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ExoplanetDataEntry p;
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while (getline(lookupTableFile, line)) {
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std::stringstream ss(line);
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std::string name;
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getline(ss, name, ',');
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// Remove the last two characters, that specify the planet
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name = name.substr(0, name.size() - 2);
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// Don't want to list systems where there is not enough data to visualize.
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// So, test if there is before adding the name to the list.
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std::string location_s;
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getline(ss, location_s);
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long location = std::stol(location_s.c_str());
|
|
|
|
data.seekg(location);
|
|
data.read(reinterpret_cast<char*>(&p), sizeof(ExoplanetDataEntry));
|
|
|
|
if (hasSufficientData(p)) {
|
|
names.push_back(name);
|
|
}
|
|
}
|
|
|
|
// For easier read, sort by names and remove duplicates
|
|
std::sort(names.begin(), names.end());
|
|
names.erase(std::unique(names.begin(), names.end()), names.end());
|
|
|
|
return names;
|
|
}
|
|
|
|
int getListOfExoplanets(lua_State* L) {
|
|
ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::getListOfExoplanets");
|
|
|
|
std::vector<std::string> names = hostStarsWithSufficientData();
|
|
|
|
lua_newtable(L);
|
|
int number = 1;
|
|
for (const std::string& s : names) {
|
|
lua_pushstring(L, s.c_str());
|
|
lua_rawseti(L, -2, number);
|
|
++number;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int listAvailableExoplanetSystems(lua_State* L) {
|
|
ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::listAvailableExoplanetSystems");
|
|
|
|
std::vector<std::string> names = hostStarsWithSufficientData();
|
|
|
|
std::string output;
|
|
for (auto it = names.begin(); it != names.end(); ++it) {
|
|
if (it != names.end()) {
|
|
output += *it + ", ";
|
|
}
|
|
}
|
|
|
|
LINFO(fmt::format(
|
|
"There is data available for the following {} exoplanet systems: {}",
|
|
names.size(), output
|
|
));
|
|
|
|
return 0;
|
|
}
|
|
|
|
} //namespace openspace::exoplanets::luascriptfunctions
|