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523 lines
19 KiB
C++
523 lines
19 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2020 *
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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/engine/moduleengine.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/spicemanager.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 <glm/gtc/quaternion.hpp>
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#include <glm/gtx/quaternion.hpp>
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#include <glm/gtx/transform.hpp>
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#include <cfloat>
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#include <cmath>
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#include <fstream>
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#include <iostream>
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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 = "${SYNC}/http/exoplanets_textures/1/sun.jpg";
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constexpr const char* DiscTextureFile =
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"${SYNC}/http/exoplanets_textures/1/disc_texture.png";
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void createExoplanetSystem(std::string_view starName) {
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// If user have given name as in EOD, change it to speck-name
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const std::string starNameSpeck = std::string(speckStarName(starName));
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const std::string starIdentifier = createIdentifier(starNameSpeck);
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const std::string guiPath = ExoplanetsGuiPath + starNameSpeck;
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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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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;
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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;
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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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Exoplanet p;
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std::string line;
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bool found = false;
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std::vector<Exoplanet> planetSystem;
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std::vector<std::string> planetNames;
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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.compare(0, name.length() - 2, starNameSpeck) == 0) {
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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(Exoplanet));
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planetNames.push_back(name);
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planetSystem.push_back(p);
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found = true;
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}
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}
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data.close();
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lut.close();
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if (!found) {
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LERROR(fmt::format("No star with the provided name was found: '{}'", starName));
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return;
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}
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bool notEnoughData = std::isnan(p.positionX) || std::isnan(p.a) || std::isnan(p.per);
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if (notEnoughData) {
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LERROR(fmt::format(
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"Insufficient data available for representing the exoplanet system: '{}'",
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starName
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));
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return;
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}
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const glm::dvec3 starPosition = glm::dvec3(
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p.positionX * distanceconstants::Parsec,
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p.positionY * distanceconstants::Parsec,
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p.positionZ * distanceconstants::Parsec
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);
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const glm::dvec3 sunPosition = glm::dvec3(0.0, 0.0, 0.0);
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const glm::dvec3 starToSunVec = glm::normalize(sunPosition - starPosition);
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const glm::dvec3 galacticNorth = glm::dvec3(0.0, 0.0, 1.0);
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const glm::dmat3 galaxticToCelestialMatrix =
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SpiceManager::ref().positionTransformMatrix("GALACTIC", "J2000", 0.0);
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const glm::dvec3 celestialNorth = glm::normalize(
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galaxticToCelestialMatrix * galacticNorth
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);
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// Earth's north vector projected onto the skyplane, the plane perpendicular to the
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// viewing vector (starToSunVec)
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const float celestialAngle = static_cast<float>(glm::dot(
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celestialNorth,
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starToSunVec
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));
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glm::dvec3 northProjected = glm::normalize(
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celestialNorth - (celestialAngle / glm::length(starToSunVec)) * starToSunVec
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);
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const glm::dvec3 beta = glm::normalize(glm::cross(starToSunVec, northProjected));
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const glm::dmat3 exoplanetSystemRotation = glm::dmat3(
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northProjected.x,
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northProjected.y,
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northProjected.z,
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beta.x,
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beta.y,
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beta.z,
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starToSunVec.x,
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starToSunVec.y,
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starToSunVec.z
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);
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// Star renderable globe, if we have a radius and bv color index
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std::string starGlobeRenderableString;
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if (!std::isnan(p.rStar)) {
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const float radiusInMeter =
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p.rStar * static_cast<float>(distanceconstants::SolarRadius);
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std::string layers = "";
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if (!std::isnan(p.bmv)) {
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// @TODO (emmbr, 2020-10-12) should also check the bv value for the siblings.
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// The data on the planets is derived from different sources, so while this
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// planet has a nan value, another might not
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const std::string color = starColor(p.bmv);
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if (color.empty()) {
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LERROR("Error occurred when computing star color");
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return;
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}
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layers = "ColorLayers = {"
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"{"
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"Identifier = 'StarColor',"
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"Type = 'SolidColor',"
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"Color = " + 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 = 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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}
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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 = {" + layers + "}"
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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(starPosition) + ""
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"}"
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"},"
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"GUI = {"
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"Name = '" + starNameSpeck + " (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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openspace::scripting::ScriptEngine::RemoteScripting::Yes
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);
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// Planets
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for (size_t i = 0; i < planetSystem.size(); i++) {
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Exoplanet planet = planetSystem[i];
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const std::string planetName = 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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if (std::isnan(planet.i)) {
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planet.i = 90.f;
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}
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if (std::isnan(planet.bigOmega)) {
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planet.bigOmega = 180.f;
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}
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if (std::isnan(planet.omega)) {
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planet.omega = 90.f;
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}
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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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float planetRadius;
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std::string enabled;
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const float astronomicalUnit = static_cast<float>(distanceconstants::AstronomicalUnit);
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const float solarRadius = static_cast<float>(distanceconstants::SolarRadius);
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const float jupiterRadius = static_cast<float>(distanceconstants::JupiterRadius);
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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 period = 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) + "," //ECC
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"SemiMajorAxis = " + std::to_string(semiMajorAxisInKm) + ","
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"Inclination = " + std::to_string(planet.i) + "," //I
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"AscendingNode = " + std::to_string(planet.bigOmega) + "," //BIGOM
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"ArgumentOfPeriapsis = " + std::to_string(planet.omega) + "," //OM
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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(period) + ""
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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) + "," //R. 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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openspace::global::scriptEngine.queueScript(
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"openspace.addSceneGraphNode(" + planetNode + ");",
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openspace::scripting::ScriptEngine::RemoteScripting::Yes
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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::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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openspace::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.hasKeyAndValue<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 starNameSpeck = std::string(speckStarName(starName));
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const std::string starIdentifier = createIdentifier(starNameSpeck);
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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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int listAvailableExoplanetSystems(lua_State* L) {
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ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::listAvailableExoplanetSystems");
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std::ifstream file(absPath(LookUpTablePath));
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if (!file.good()) {
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return ghoul::lua::luaError(
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L,
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fmt::format("Failed to open file '{}'", LookUpTablePath)
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);
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}
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std::vector<std::string> names;
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// As of 2020 there are about 4000 confirmed exoplanets, so use this number
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// as a guess for the vector size
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const int nExoplanetsGuess = 4000;
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names.reserve(nExoplanetsGuess);
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std::string line;
|
|
while (getline(file, line)) {
|
|
std::stringstream ss(line);
|
|
std::string name;
|
|
getline(ss, name, ',');
|
|
// Remove the last two characters, that specify the planet
|
|
name = name.substr(0, name.size() - 2);
|
|
|
|
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());
|
|
|
|
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
|