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Planet.cpp
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/*
* Stellarium
* Copyright (C) 2002 Fabien Chereau
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*/
#include <QOpenGLFunctions_1_0>
#include "StelApp.hpp"
#include "StelSRGB.hpp"
#include "StelCore.hpp"
#include "StelFileMgr.hpp"
#include "StelTexture.hpp"
#include "StelSkyDrawer.hpp"
#include "SolarSystem.hpp"
#include "LandscapeMgr.hpp"
#include "Planet.hpp"
#include "Orbit.hpp"
#include "planetsephems/precession.h"
#include "planetsephems/EphemWrapper.hpp"
#include "StelObserver.hpp"
#include "StelProjector.hpp"
#include "sidereal_time.h"
#include "StelTextureMgr.hpp"
#include "StelModuleMgr.hpp"
#include "StelMovementMgr.hpp"
#include "StelPainter.hpp"
#include "StelTranslator.hpp"
#include "StelLocaleMgr.hpp"
#include "StelUtils.hpp"
#include "StelOpenGL.hpp"
#include "StelMainView.hpp"
#include "StelOBJ.hpp"
#include "StelOpenGLArray.hpp"
#include "StelHips.hpp"
#include "RefractionExtinction.hpp"
#include <limits>
#include <QByteArray>
#include <QTextStream>
#include <QString>
#include <QDebug>
#include <QVarLengthArray>
#include <QOpenGLBuffer>
#include <QOpenGLContext>
#include <QOpenGLVertexArrayObject>
#ifdef DEBUG_SHADOWMAP
#include <QOpenGLFramebufferObject>
#endif
#if (QT_VERSION>=QT_VERSION_CHECK(6,0,0))
#include <QOpenGLVersionFunctionsFactory>
#endif
#include <QOpenGLShader>
#include <QtConcurrent>
#include <QElapsedTimer>
const QString Planet::PLANET_TYPE = QStringLiteral("Planet");
bool Planet::shaderError = false;
Vec3f Planet::labelColor = Vec3f(0.4f,0.4f,0.8f);
Vec3f Planet::orbitColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitMajorPlanetsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitMoonsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitMinorPlanetsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitDwarfPlanetsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitCubewanosColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitPlutinosColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitScatteredDiscObjectsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitOortCloudObjectsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitSednoidsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitInterstellarColor = Vec3f(1.0f,0.2f,1.0f);
Vec3f Planet::orbitCometsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitMercuryColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitVenusColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitEarthColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitMarsColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitJupiterColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitSaturnColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitUranusColor = Vec3f(1.0f,0.6f,1.0f);
Vec3f Planet::orbitNeptuneColor = Vec3f(1.0f,0.6f,1.0f);
StelTextureSP Planet::hintCircleTex;
StelTextureSP Planet::texEarthShadow;
bool Planet::drawMoonHalo = true;
bool Planet::drawSunHalo = true;
bool Planet::permanentDrawingOrbits = false;
Planet::PlanetOrbitColorStyle Planet::orbitColorStyle = Planet::ocsOneColor;
int Planet::orbitsThickness = 1;
QOpenGLShaderProgram* Planet::planetShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::planetShaderVars;
QOpenGLShaderProgram* Planet::ringPlanetShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::ringPlanetShaderVars;
QOpenGLShaderProgram* Planet::moonShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::moonShaderVars;
QOpenGLShaderProgram* Planet::objShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::objShaderVars;
QOpenGLShaderProgram* Planet::objShadowShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::objShadowShaderVars;
QOpenGLShaderProgram* Planet::transformShaderProgram=Q_NULLPTR;
Planet::PlanetShaderVars Planet::transformShaderVars;
bool Planet::shadowInitialized = false;
Vec2f Planet::shadowPolyOffset = Vec2f(0.0f, 0.0f);
#ifdef DEBUG_SHADOWMAP
QOpenGLFramebufferObject* Planet::shadowFBO = Q_NULLPTR;
#else
GLuint Planet::shadowFBO = 0;
#endif
GLuint Planet::shadowTex = 0;
const QMap<Planet::PlanetType, QString> Planet::pTypeMap = // Maps type to english name.
{
{ Planet::isStar, N_("star") },
{ Planet::isPlanet, N_("planet") },
{ Planet::isMoon, N_("moon") },
{ Planet::isObserver, N_("observer") },
{ Planet::isArtificial, N_("artificial") },
{ Planet::isAsteroid, N_("asteroid") },
{ Planet::isPlutino, N_("plutino") },
{ Planet::isComet, N_("comet") },
{ Planet::isDwarfPlanet,N_("dwarf planet") },
{ Planet::isCubewano, N_("cubewano") },
{ Planet::isSDO, N_("scattered disc object") },
{ Planet::isOCO, N_("Oort cloud object") },
{ Planet::isSednoid, N_("sednoid") },
{ Planet::isInterstellar,N_("interstellar object") },
{ Planet::isUNDEFINED, "UNDEFINED" } // something must be broken before we ever see this!
};
const QMap<QString, QString> Planet::nPlanetMap =
{
{ "E", "Earth" }, { "M", "Mars" }, { "J", "Jupiter" },
{ "S", "Saturn" }, { "U", "Uranus" }, { "N", "Neptune" },
{ "P", "(134340) Pluto" }
};
const QMap<Planet::ApparentMagnitudeAlgorithm, QString> Planet::vMagAlgorithmMap =
{
{Planet::MallamaHilton_2018, "Mallama2018"},
{Planet::ExplanatorySupplement_2013, "ExpSup2013"},
{Planet::ExplanatorySupplement_1992, "ExpSup1992"},
{Planet::Mueller_1893, "Mueller1893"},
{Planet::AstronomicalAlmanac_1984, "AstrAlm1984"},
{Planet::Generic, "Generic"},
{Planet::UndefinedAlgorithm, ""}
};
Planet::ApparentMagnitudeAlgorithm Planet::vMagAlgorithm;
#define STRINGIFY2(a) #a
#define STRINGIFY(a) STRINGIFY2(a)
#define SM_SIZE 1024
Planet::PlanetOBJModel::PlanetOBJModel()
: needsRescale(true), projPosBuffer(new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer)), obj(new StelOBJ()), arr(new StelOpenGLArray())
{
//The buffer is refreshed completely before each draw, so StreamDraw should be ok
projPosBuffer->setUsagePattern(QOpenGLBuffer::StreamDraw);
}
Planet::PlanetOBJModel::~PlanetOBJModel()
{
delete projPosBuffer;
delete obj;
delete arr;
}
bool Planet::PlanetOBJModel::loadGL()
{
if(arr->load(obj,false))
{
//delete StelOBJ because the data is no longer needed
delete obj;
obj = Q_NULLPTR;
//make sure the vector has enough space to hold the projected data
projectedPosArray.resize(posArray.size());
//create the GL buffer for the projection
return projPosBuffer->create();
}
return false;
}
void Planet::PlanetOBJModel::performScaling(double scale)
{
scaledArray = posArray;
//pre-scale the cpu-side array
float aScale=static_cast<float>(scale);
for(int i = 0; i<posArray.size();++i)
{
scaledArray[i]*=aScale;
}
needsRescale = false;
}
Planet::Planet(const QString& englishName,
double radius,
double oblateness,
Vec3f halocolor,
float albedo,
float roughness,
const QString& atexMapName,
const QString& anormalMapName,
const QString& ahorizonMapName,
const QString& aobjModelName,
posFuncType coordFunc,
Orbit* anOrbitPtr,
OsculatingFunctType *osculatingFunc,
bool acloseOrbit,
bool hidden,
bool hasAtmosphere,
bool hasHalo,
const QString& pTypeStr)
: flagNativeName(true),
deltaJDE(StelCore::JD_SECOND),
deltaOrbitJDE(0.0),
closeOrbit(acloseOrbit),
englishName(englishName),
nameI18(englishName),
nativeName(""),
texMapName(atexMapName),
normalMapName(anormalMapName),
horizonMapName(ahorizonMapName),
siderealPeriod(0.),
equatorialRadius(radius),
oneMinusOblateness(1.0-oblateness),
eclipticPos(0.,0.,0.),
eclipticVelocity(0.,0.,0.),
aberrationPush(0.,0.,0.),
haloColor(halocolor),
absoluteMagnitude(-99.0f),
massKg(0.),
albedo(albedo),
roughness(roughness),
outgas_intensity(0.f),
outgas_falloff(0.f),
rotLocalToParent(Mat4d::identity()),
axisRotation(0.f),
objModel(Q_NULLPTR),
objModelLoader(Q_NULLPTR),
survey(Q_NULLPTR),
rings(Q_NULLPTR),
distance(0.0),
sphereScale(1.),
lastJDE(J2000),
coordFunc(coordFunc),
orbitPtr(anOrbitPtr),
osculatingFunc(osculatingFunc),
parent(Q_NULLPTR),
flagLabels(true),
hidden(hidden),
atmosphere(hasAtmosphere),
halo(hasHalo),
multisamplingEnabled_(StelApp::getInstance().getSettings()->value("video/multisampling", 0).toUInt() != 0),
planetShadowsSupersampEnabled_(StelApp::getInstance().getSettings()->value("video/planet_shadows_supersampling",false).toBool()),
gl(Q_NULLPTR),
iauMoonNumber(""),
b_v(99.f),
discoverer(""),
discoveryDate(""),
orbitPositionsCache(ORBIT_SEGMENTS * 2)
{
// Initialize pType with the key found in pTypeMap, or mark planet type as undefined.
// The latter condition should obviously never happen.
pType = pTypeMap.key(pTypeStr, Planet::isUNDEFINED);
if (pType==Planet::isUNDEFINED)
{
qCritical() << "Planet " << englishName << "has no type. Please edit one of ssystem_major.ini or ssystem_minor.ini to ensure operation.";
exit(-1);
}
Q_ASSERT(pType != Planet::isUNDEFINED);
auto& texMan = StelApp::getInstance().getTextureManager();
//only try loading textures when there is actually something to load!
//prevents some overhead when starting
texMapFileOrig = QString();
if(!texMapName.isEmpty())
{
// TODO: use StelFileMgr::findFileInAllPaths() after introducing an Add-On Manager
QString texMapFile = StelFileMgr::findFile("textures/"+texMapName, StelFileMgr::File);
if (!texMapFile.isEmpty())
{
texMap = texMan.createTextureThread(texMapFile, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT), false);
texMapFileOrig = texMapFile;
}
else
qWarning()<<"Cannot resolve path to texture file"<<texMapName<<"of object"<<englishName;
}
normalMapFileOrig = QString();
if(!normalMapName.isEmpty())
{
// TODO: use StelFileMgr::findFileInAllPaths() after introducing an Add-On Manager
QString normalMapFile = StelFileMgr::findFile("textures/"+normalMapName, StelFileMgr::File);
if (!normalMapFile.isEmpty())
{
normalMap = texMan.createTextureThread(normalMapFile, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT), false);
normalMapFileOrig = normalMapFile;
}
}
if(!horizonMapName.isEmpty())
{
// TODO: use StelFileMgr::findFileInAllPaths() after introducing an Add-On Manager
QString horizonMapFile = StelFileMgr::findFile("textures/"+horizonMapName, StelFileMgr::File);
if (!horizonMapFile.isEmpty())
{
horizonMap = texMan.createTextureThread(horizonMapFile, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT), false);
horizonMapFileOrig = horizonMapFile;
}
}
//the OBJ is lazily loaded when first required
if(!aobjModelName.isEmpty())
{
// TODO: use StelFileMgr::findFileInAllPaths() after introducing an Add-On Manager
objModelPath = StelFileMgr::findFile("models/"+aobjModelName, StelFileMgr::File);
if(objModelPath.isEmpty())
{
qWarning()<<"Cannot resolve path to model file"<<aobjModelName<<"of object"<<englishName;
}
}
if ((pType <= isDwarfPlanet) && (englishName!="Pluto")) // concentrate on "inner" objects, KBO etc. stay at 1/s recomputation.
{
deltaJDE = 0.001*StelCore::JD_SECOND;
}
propMgr = StelApp::getInstance().getStelPropertyManager();
Q_ASSERT_X(oneMinusOblateness<=1., "Planet.cpp", QString("1-oblateness too large: %1").arg(QString::number(oneMinusOblateness, 'f', 10)).toLatin1() );
}
// called in SolarSystem::init() before first planet is created. May initialize static variables.
void Planet::init()
{
RotationElements::updatePlanetCorrections(J2000, RotationElements::EarthMoon);
RotationElements::updatePlanetCorrections(J2000, RotationElements::Mars);
RotationElements::updatePlanetCorrections(J2000, RotationElements::Jupiter);
RotationElements::updatePlanetCorrections(J2000, RotationElements::Saturn);
RotationElements::updatePlanetCorrections(J2000, RotationElements::Uranus);
RotationElements::updatePlanetCorrections(J2000, RotationElements::Neptune);
}
Planet::~Planet()
{
delete rings;
delete objModel;
if(const auto ctx = QOpenGLContext::currentContext())
{
const auto gl = ctx->functions();
if(sphereVAO)
gl->glDeleteBuffers(1, &sphereVBO);
if(ringsVAO)
gl->glDeleteBuffers(1, &ringsVBO);
if(surveyVBO)
gl->glDeleteBuffers(1, &surveyVBO);
}
}
void Planet::setColorIndexBV(float bv)
{
b_v = bv;
}
void Planet::resetTextures()
{
auto& texMan = StelApp::getInstance().getTextureManager();
// restore texture
if (!texMapFileOrig.isEmpty())
texMap = texMan.createTextureThread(texMapFileOrig, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT));
// restore normal map
if (!normalMapFileOrig.isEmpty())
normalMap = texMan.createTextureThread(normalMapFileOrig, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT));
if (!horizonMapFileOrig.isEmpty())
horizonMap = texMan.createTextureThread(horizonMapFileOrig, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT));
}
void Planet::replaceTexture(const QString &texName)
{
if(!texName.isEmpty())
{
auto& texMan = StelApp::getInstance().getTextureManager();
QString texMapFile = StelFileMgr::findFile("scripts/" + texName, StelFileMgr::File);
if (!texMapFile.isEmpty())
texMap = texMan.createTextureThread(texMapFile, StelTexture::StelTextureParams(true, GL_LINEAR, GL_REPEAT));
else
qWarning()<<"Cannot resolve path to texture file"<<texName<<"of object"<<englishName;
}
}
void Planet::translateName(const StelTranslator& trans)
{
nameI18 = trans.qtranslate(englishName, getContextString());
nativeNameMeaningI18n = (!nativeNameMeaning.isEmpty() ? trans.qtranslate(nativeNameMeaning) : "");
}
void Planet::setIAUMoonNumber(const QString &designation)
{
if (!iauMoonNumber.isEmpty())
return;
iauMoonNumber = designation;
}
QString Planet::getEnglishName() const
{
if (!iauMoonNumber.isEmpty())
return QString("(%1) %2").arg(iauMoonNumber, englishName);
else
return englishName;
}
QString Planet::getIAUDesignation() const
{
if (iauMoonNumber.isEmpty())
return QString();
else
{
if (!iauMoonNumber.contains(" ")) // We use short designations for moons of major planets, so, no space char in this case!
return QString("%1 %2").arg(nPlanetMap.value(iauMoonNumber.mid(0, 1).trimmed()), iauMoonNumber.mid(1).trimmed());
else
return QString();
}
}
QString Planet::getNameI18n() const
{
if (!iauMoonNumber.isEmpty())
return QString("(%1) %2").arg(iauMoonNumber, nameI18);
else
return nameI18;
}
QString Planet::getDiscoveryCircumstances() const
{
QString ddate = StelUtils::localeDiscoveryDateString(discoveryDate);
if (discoverer.isEmpty())
return ddate;
else
return QString("%1 (%2)").arg(ddate, discoverer);
}
const QString Planet::getContextString() const
{
static const QMap<PlanetType, QString>map={
{isStar, "star"},
{isPlanet, "major planet"},
{isMoon, "moon"},
{isObserver, "special celestial body"},
{isArtificial, "special celestial body"},
{isComet, "comet"},
{isUNDEFINED, ""}}; // should not happen, though
return map.value(getPlanetType(), "minor planet");
}
QString Planet::getPlanetLabel() const
{
QString str;
QTextStream oss(&str);
if (englishName=="Pluto") // We must prepend minor planet number here. Actually Dwarf Planet Pluto is still a "Planet" object in Stellarium...
oss << QString("(134340) ");
if (getFlagNativeName())
{
switch (propMgr->getStelPropertyValue("ConstellationMgr.constellationDisplayStyle").toInt())
{
case 1: // constellationsNative
oss << (nativeName.isEmpty() ? getNameI18n() : QString("%1 [%2]").arg(getNativeName(), getNameI18n()));
break;
case 2: // constellationsTranslated
oss << (nativeNameMeaningI18n.isEmpty() ? getNameI18n() : QString("%1 [%2]").arg(getNativeNameI18n(), getNameI18n()));
break;
case 3: // constellationsEnglish
oss << (nativeNameMeaning.isEmpty() ? getEnglishName() : QString("%1 [%2]").arg(nativeNameMeaning, getEnglishName()));
break;
default:
oss << getNameI18n();
break;
}
}
else
{
switch (propMgr->getStelPropertyValue("ConstellationMgr.constellationDisplayStyle").toInt())
{
case 3: // constellationsEnglish
oss << getEnglishName();
break;
case 1: // constellationsNative
case 2: // constellationsTranslated
default:
oss << getNameI18n();
break;
}
}
return str;
}
QString Planet::getInfoStringName(const StelCore *core, const InfoStringGroup& flags) const
{
Q_UNUSED(core) Q_UNUSED(flags)
QString str;
QTextStream oss(&str);
oss << "<h2>" << getPlanetLabel();
// NOTE: currently only moons have an IAU designation
QString iau = getIAUDesignation();
if (!iau.isEmpty())
oss << QString(" (%1)").arg(iau);
oss.setRealNumberNotation(QTextStream::FixedNotation);
oss.setRealNumberPrecision(2);
if (sphereScale != 1.)
oss << QString::fromUtf8(" (\xC3\x97") << sphereScale << ")";
oss << "</h2>";
return str;
}
QString Planet::getInfoStringAbsoluteMagnitude(const StelCore *core, const InfoStringGroup& flags) const
{
Q_UNUSED(core)
QString str;
QTextStream oss(&str);
if (flags&AbsoluteMagnitude && (getAbsoluteMagnitude() > -99.f))
{
oss << QString("%1: %2<br/>").arg(q_("Absolute Magnitude")).arg(getAbsoluteMagnitude(), 0, 'f', 2);
const float moMag=getMeanOppositionMagnitude();
if (moMag<50.f)
oss << QString("%1: %2<br/>").arg(q_("Mean Opposition Magnitude")).arg(moMag, 0, 'f', 2);
}
return str;
}
// Return the information string "ready to print" :)
QString Planet::getInfoString(const StelCore* core, const InfoStringGroup& flags) const
{
QString str;
QTextStream oss(&str);
const double distanceAu = getJ2000EquatorialPos(core).norm();
if (flags&Name)
{
oss << getInfoStringName(core, flags);
QStringList extraNames=getExtraInfoStrings(Name);
if (!extraNames.isEmpty())
oss << q_("Additional names: ") << extraNames.join(", ") << "<br/>";
}
if (flags&CatalogNumber)
{
QStringList extraCat=getExtraInfoStrings(CatalogNumber);
if (!extraCat.isEmpty())
oss << q_("Additional catalog numbers: ") << extraCat.join(", ") << "<br/>";
}
if (flags&ObjectType && getPlanetType()!=isUNDEFINED)
{
if (getPlanetType()==isComet)
{
QString cometType = qc_("non-periodic", "type of comet");
if (static_cast<KeplerOrbit*>(orbitPtr)->getEccentricity() < 1.0)
{
const double siderealPeriod = getSiderealPeriod(); // days required for revolution around parent.
if (siderealPeriod>0. && siderealPeriod<73050.) // period limit: 200a (200 years = 73050 days)
cometType = qc_("short-period", "type of comet");
else
cometType = qc_("periodic", "type of comet");
}
oss << QString("%1: <b>%2</b> (%3)<br/>").arg(q_("Type"), getObjectTypeI18n(), cometType);
}
else
oss << QString("%1: <b>%2</b><br/>").arg(q_("Type"), getObjectTypeI18n());
}
if (getPlanetType()==PlanetType::isObserver)
{
// Do not display meaningless data for observers!
postProcessInfoString(str, flags);
return str;
}
if (flags&Magnitude)
{
static const QMap<ApparentMagnitudeAlgorithm, int>decMap={
{ Mueller_1893, 1 },
{ AstronomicalAlmanac_1984, 1 },
{ ExplanatorySupplement_1992, 1 },
{ ExplanatorySupplement_2013, 2 },
{ MallamaHilton_2018, 2 }};
if (!fuzzyEquals(getVMagnitude(core), std::numeric_limits<float>::infinity()))
oss << getMagnitudeInfoString(core, flags, decMap.value(vMagAlgorithm, 1));
oss << getExtraInfoStrings(Magnitude).join("");
}
if (flags&AbsoluteMagnitude)
{
oss << getInfoStringAbsoluteMagnitude(core, flags);
oss << getExtraInfoStrings(AbsoluteMagnitude).join("");
}
oss << getInfoStringExtraMag(core, flags);
oss << getCommonInfoString(core, flags);
#ifndef NDEBUG
// Debug help.
//oss << "Apparent Magnitude Algorithm: " << getApparentMagnitudeAlgorithmString() << " " << vMagAlgorithm << "<br>";
Vec3d sunAberr=GETSTELMODULE(SolarSystem)->getSun()->eclipticPos +GETSTELMODULE(SolarSystem)->getSun()->getAberrationPush() -GETSTELMODULE(SolarSystem)->getEarth()->eclipticPos;
double lon, lat;
StelUtils::rectToSphe(&lon, &lat, sunAberr);
oss << "Sun (light time and aberration corrected) at λ=" << StelUtils::radToDmsStr(StelUtils::fmodpos(lon, 2.*M_PI)) << " β=" << StelUtils::radToDmsStr(lat) << "<br>";
// This is mostly for debugging. Maybe also useful for letting people use our results to cross-check theirs, but we should not act as reference, currently...
// maybe separate this out into:
//if (flags&EclipticCoordXYZ)
// For now: add to EclipticCoordJ2000 group
if (flags&EclipticCoordJ2000)
{
QString algoName("VSOP87");
if (EphemWrapper::use_de440(core->getJDE())) algoName="DE440";
else if (EphemWrapper::use_de441(core->getJDE())) algoName="DE441";
else if (EphemWrapper::use_de430(core->getJDE())) algoName="DE430";
else if (EphemWrapper::use_de431(core->getJDE())) algoName="DE431";
else if (pType>=isAsteroid) algoName="Keplerian"; // TODO: observer/artificial?
// TRANSLATORS: Ecliptical rectangular coordinates
oss << QString("%1 XYZ J2000.0 (%2) without aberration: %3/%4/%5 AU").arg(qc_("Ecliptical","coordinates"), algoName, QString::number(eclipticPos[0], 'f', 7), QString::number(eclipticPos[1], 'f', 7), QString::number(eclipticPos[2], 'f', 7)) << "<br>";
Vec3d eclAb=eclipticPos+aberrationPush;
oss << QString("%1 XYZ J2000.0 (%2) with aberration: %3/%4/%5 AU").arg(qc_("Ecliptical","coordinates"), algoName, QString::number(eclAb[0], 'f', 7), QString::number(eclAb[1], 'f', 7), QString::number(eclAb[2], 'f', 7)) << "<br>";
}
#endif
// Second test avoids crash when observer is on spaceship
if (flags&ProperMotion && !core->getCurrentObserver()->isObserverLifeOver())
{
Vec4d properMotion = getHourlyProperMotion(core);
const bool withDecimalDegree = StelApp::getInstance().getFlagShowDecimalDegrees();
oss << QString("%1: %2 %3 %4%5<br/>").arg(q_("Hourly motion"), withDecimalDegree ? StelUtils::radToDecDegStr(properMotion[0]) : StelUtils::radToDmsStr(properMotion[0]), qc_("towards", "into the direction of"), QString::number(properMotion[1]*M_180_PI, 'f', 1), QChar(0x00B0));
oss << QString("%1: dα=%2 dδ=%3<br/>").arg(q_("Hourly motion"), withDecimalDegree ? StelUtils::radToDecDegStr(properMotion[2]) : StelUtils::radToDmsStr(properMotion[2]), withDecimalDegree ? StelUtils::radToDecDegStr(properMotion[3]) : StelUtils::radToDmsStr(properMotion[3]));
}
oss << getInfoStringEloPhase(core, flags, pType<=isMoon);
if (flags&Distance)
{
const double hdistanceAu = getHeliocentricEclipticPos().norm();
const double hdistanceKm = AU * hdistanceAu;
// TRANSLATORS: Unit of measure for distance - astronomical unit
QString au = qc_("AU", "distance, astronomical unit");
// TRANSLATORS: Unit of measure for distance - kilometers
QString km = qc_("km", "distance");
QString distAU, distKM;
if (englishName!="Sun")
{
if (hdistanceAu < 0.1)
{
distAU = QString::number(hdistanceAu, 'f', 6);
distKM = QString::number(hdistanceKm, 'f', 3);
}
else
{
distAU = QString::number(hdistanceAu, 'f', 3);
distKM = QString::number(hdistanceKm / 1.0e6, 'f', 3);
// TRANSLATORS: Unit of measure for distance - millions of kilometers
km = qc_("M km", "distance");
}
oss << QString("%1: %2 %3 (%4 %5)<br/>").arg(q_("Distance from Sun"), distAU, au, distKM, km);
}
const double distanceKm = AU * distanceAu;
if (distanceAu < 0.1)
{
distAU = QString::number(distanceAu, 'f', 6);
distKM = QString::number(distanceKm, 'f', 3);
// TRANSLATORS: Unit of measure for distance - kilometers
km = qc_("km", "distance");
}
else
{
distAU = QString::number(distanceAu, 'f', 3);
distKM = QString::number(distanceKm / 1.0e6, 'f', 3);
// TRANSLATORS: Unit of measure for distance - millions of kilometers
km = qc_("M km", "distance");
}
oss << QString("%1: %2 %3 (%4 %5)<br/>").arg(q_("Distance"), distAU, au, distKM, km);
// TRANSLATORS: Distance measured in terms of the speed of light
oss << QString("%1: %2 <br/>").arg(q_("Light time"), StelUtils::hoursToHmsStr(distanceKm/SPEED_OF_LIGHT/3600.) );
oss << getExtraInfoStrings(Distance).join("");
}
if (flags&Velocity)
{
// TRANSLATORS: Unit of measure for speed - kilometers per second
QString kms = qc_("km/s", "speed");
const Vec3d orbitalVel=getEclipticVelocity();
const double orbVel=orbitalVel.norm();
if (orbVel>0.)
{ // AU/d * km/AU /24
const double orbVelKms=orbVel* AU/86400.;
oss << QString("%1: %2 %3<br/>").arg(q_("Orbital velocity")).arg(orbVelKms, 0, 'f', 3).arg(kms);
const double helioVel=getHeliocentricEclipticVelocity().norm();
if (!fuzzyEquals(helioVel, orbVel))
oss << QString("%1: %2 %3<br/>").arg(q_("Heliocentric velocity")).arg(helioVel* AU/86400., 0, 'f', 3).arg(kms);
}
oss << getExtraInfoStrings(Velocity).join("");
}
oss << getInfoStringPeriods(core, flags);
oss << getInfoStringSize(core, flags);
oss << getInfoStringExtra(core, flags);
oss << getSolarLunarInfoString(core, flags);
if (!hasValidPositionalData(core->getJDE(), PositionQuality::Position))
{
if (orbitPtr && pType>=isArtificial)
{
StelLocaleMgr* localeMgr = &StelApp::getInstance().getLocaleMgr();
double JDE = static_cast<KeplerOrbit*>(orbitPtr)->getEpochJDE();
oss << q_("NOTE: elements for epoch %1 probably outdated. Consider updating data!").arg(localeMgr->getPrintableDateLocal(JDE)) << "<br/>";
}
}
postProcessInfoString(str, flags);
return str;
}
// Print apparent and equatorial diameters
QString Planet::getInfoStringSize(const StelCore *core, const InfoStringGroup& flags) const
{
const bool withDecimalDegree = StelApp::getInstance().getFlagShowDecimalDegrees();
QString str;
QTextStream oss(&str);
const double angularSize = getAngularRadius(core)*(2.*M_PI_180);
if (flags&Size && angularSize>=4.8e-8)
{
QString s1, s2, sizeStr = "";
if (rings)
{
const double withoutRings = 2.*getSpheroidAngularRadius(core)*M_PI/180.;
if (withDecimalDegree)
{
s1 = StelUtils::radToDecDegStr(withoutRings, 5, false, true);
s2 = StelUtils::radToDecDegStr(angularSize, 5, false, true);
}
else
{
s1 = StelUtils::radToDmsPStr(withoutRings, 2);
s2 = StelUtils::radToDmsPStr(angularSize, 2);
}
sizeStr = QString("%1, %2: %3").arg(s1, q_("with rings"), s2);
}
else
{
if (sphereScale!=1.) // We must give correct diameters even if upscaling (e.g. Moon)
{
if (withDecimalDegree)
{
s1 = StelUtils::radToDecDegStr(angularSize / sphereScale, 5, false, true);
s2 = StelUtils::radToDecDegStr(angularSize, 5, false, true);
}
else
{
s1 = StelUtils::radToDmsPStr(angularSize / sphereScale, 2);
s2 = StelUtils::radToDmsPStr(angularSize, 2);
}
sizeStr = QString("%1, %2: %3").arg(s1, q_("scaled up to"), s2);
}
else
{
if (withDecimalDegree)
sizeStr = StelUtils::radToDecDegStr(angularSize, 5, false, true);
else
sizeStr = StelUtils::radToDmsPStr(angularSize, 2);
}
}
oss << QString("%1: %2<br/>").arg(q_("Apparent diameter"), sizeStr);
}
if (flags&Size)
{
QString diam = (getPlanetType()==isPlanet ? q_("Equatorial diameter") : q_("Diameter")); // Many asteroids have irregular shape (Currently unhandled)
oss << QString("%1: %2 %3<br/>").arg(diam, QString::number(AU * getEquatorialRadius() * 2.0, 'f', 1) , qc_("km", "distance"));
oss << getExtraInfoStrings(Size).join("");
}
return str;
}
QString Planet::getInfoStringExtraMag(const StelCore *core, const InfoStringGroup& flags) const
{
Q_UNUSED(core)
if (flags&Extra && b_v<99.f)
return QString("%1: <b>%2</b><br/>").arg(q_("Color Index (B-V)"), QString::number(b_v, 'f', 2));
else
return "";
}
QString Planet::getInfoStringEloPhase(const StelCore *core, const InfoStringGroup& flags, const bool withIllum) const
{
QString str;
QTextStream oss(&str);
if ((flags&Elongation) && (englishName!="Sun") && (core->getCurrentPlanet()->englishName!="Sun"))
{
const bool withTables = StelApp::getInstance().getFlagUseFormattingOutput();
const bool withDecimalDegree = StelApp::getInstance().getFlagShowDecimalDegrees();
const Vec3d& observerHelioPos = core->getObserverHeliocentricEclipticPos();
const double elongation = getElongation(observerHelioPos);
// some users require not "modern elongation" but just the DeltaLambda (GH:#1786)
static SolarSystem* ssystem = GETSTELMODULE(SolarSystem);
double raSun, deSun, ra, de, lSun, ecLong, bSun, ecLat;
double obl=ssystem->getEarth()->getRotObliquity(core->getJDE());
if (core->getUseNutation())
{
double dEps, dPsi;
getNutationAngles(core->getJDE(), &dPsi, &dEps);
obl+=dEps;
}
StelUtils::rectToSphe(&raSun, &deSun, ssystem->getSun()->getEquinoxEquatorialPos(core));
StelUtils::rectToSphe(&ra, &de, getEquinoxEquatorialPos(core));
StelUtils::equToEcl(raSun, deSun, obl, &lSun, &bSun);
StelUtils::equToEcl(ra, de, obl, &ecLong, &ecLat);
double elongAlongEcliptic = StelUtils::fmodpos(ecLong-lSun, M_PI*2.);
if (elongAlongEcliptic > M_PI) elongAlongEcliptic-=2.*M_PI;
double elongationDecDeg=elongAlongEcliptic*M_180_PI;
QString pha, elo, dLam;
if (withDecimalDegree)
{
pha = StelUtils::radToDecDegStr(getPhaseAngle(observerHelioPos),4,false,true);
elo = StelUtils::radToDecDegStr(elongation,4,false,true);
dLam = StelUtils::decDegToLongitudeStr(elongationDecDeg, true, true, false);
}
else
{
pha = StelUtils::radToDmsStr(getPhaseAngle(observerHelioPos), true);
elo = StelUtils::radToDmsStr(elongation, true);
dLam = StelUtils::decDegToLongitudeStr(elongationDecDeg);
}
elo.replace("+","",Qt::CaseInsensitive); // remove sign
if (withTables)
{
oss << "<table style='margin:0em 0em 0em -0.125em;border-spacing:0px;border:0px;'>";
oss << QString("<tr><td>%1:</td><td align=\"right\">%2</td></tr>").arg(q_("Elongation"), elo);
oss << QString("<tr><td>%1 (Δλ<sub>s</sub>):</td><td align=\"right\">%2</td></tr>").arg(q_("Elongation"), dLam);
oss << QString("<tr><td>%1:</td><td align=\"right\">%2</td></tr>").arg(q_("Phase angle"), pha);
if (withIllum)
oss << QString("<tr><td>%1:</td><td align=\"right\">%2%</td></tr>").arg(q_("Illuminated"), QString::number(getPhase(observerHelioPos) * 100., 'f', 1));
oss << "</table>";
}
else
{
oss << QString("%1: %2<br/>").arg(q_("Elongation"), elo);
oss << QString("%1: %2<br/>").arg(q_("Elong. in Ecl.Long."), dLam);
oss << QString("%1: %2<br/>").arg(q_("Phase angle"), pha);
if (withIllum)
oss << QString("%1: %2%<br/>").arg(q_("Illuminated"), QString::number(getPhase(observerHelioPos) * 100., 'f', 1));
}
if (getPlanetType()==isMoon && this->parent!=core->getCurrentPlanet())
{
QString ad;
const double angularDistance = getJ2000EquatorialPos(core).angle(this->parent->getJ2000EquatorialPos(core));
if (withDecimalDegree)
ad = StelUtils::radToDecDegStr(angularDistance,4,false,true);
else
ad = StelUtils::radToDmsStr(angularDistance, true);
oss << QString("%1 %2 — %3: %4<br/>").arg(q_("Angular distance"), getNameI18n(), this->parent->getNameI18n(), ad);
}
}
return str;
}
QString Planet::getInfoStringPeriods(const StelCore *core, const InfoStringGroup& flags) const
{
QString str;
QTextStream oss(&str);
if (flags&Extra)
{
const bool withTables = StelApp::getInstance().getFlagUseFormattingOutput();
if (withTables)
oss << "<table style='margin:0em 0em 0em -0.125em;border-spacing:0px;border:0px;'>";
const QByteArray fmt=withTables ? "<tr><td>%1:</td><td style='text-align: right;'> %2</td><td> %3 (%4 a)</td></tr>" : "%1: %2 %3 (%4 a)<br/>";
// TRANSLATORS: Unit of measure for period - days
QString days = qc_("days", "duration");
// Sidereal and synodic periods are better sorted here
PlanetP currentPlanet = core->getCurrentPlanet();
const double siderealPeriod = getSiderealPeriod(); // days required for revolution around parent.
const double siderealPeriodCurrentPlanet = currentPlanet->getSiderealPeriod();
QString celestialObject = getEnglishName();
if ((siderealPeriod>0.0) && (celestialObject != "Sun"))
{
// Sidereal (orbital) period for solar system bodies in days and in Julian years (symbol: a)
oss << QString(fmt).arg(q_("Sidereal period"), QString::number(siderealPeriod, 'f', 2), days, QString::number(siderealPeriod/365.25, 'f', 3));
}
if (celestialObject!="Sun")
celestialObject = getParent()->getEnglishName();
// Synodic revolution period
if (siderealPeriodCurrentPlanet > 0.0 && siderealPeriod > 0.0 && currentPlanet->getPlanetType()==Planet::isPlanet && (getPlanetType()==Planet::isPlanet || currentPlanet->getEnglishName()==celestialObject))
{
double synodicPeriod = qAbs(1/(1/siderealPeriodCurrentPlanet - 1/siderealPeriod));
// Synodic period for major planets in days and in Julian years (symbol: a)
oss << QString(fmt).arg(q_("Synodic period"), QString::number(synodicPeriod, 'f', 2), days, QString::number(synodicPeriod/365.25, 'f', 3));
}
if (withTables)
oss << "</table>";
}
return str;
}
Vec4d Planet::getHourlyProperMotion(const StelCore *core) const
{
if (core->getCurrentObserver()->isTraveling())
return Vec4d(0.);
else
{
// Setting/resetting the time causes a significant slowdown. We must apply some trickery to keep time in sync.
const Vec3d equPos=getEquinoxEquatorialPos(core);
double dec_equ, ra_equ;
StelUtils::rectToSphe(&ra_equ,&dec_equ,equPos);
StelCore* core1 = StelApp::getInstance().getCore(); // we need non-const reference here.
const double currentJD=core1->getJDOfLastJDUpdate();
const qint64 millis=core1->getMilliSecondsOfLastJDUpdate();
StelCore* core2 = StelApp::getInstance().getCore(); // use to fix hourly motion
const double JD2=core2->getJD();
core2->setJD(JD2-StelCore::JD_HOUR*.1);
core2->update(0);
Vec3d equPosPrev=getEquinoxEquatorialPos(core2);
const double deltaEq=equPos.angle(equPosPrev);
double dec_equPrev, ra_equPrev;
StelUtils::rectToSphe(&ra_equPrev,&dec_equPrev,equPosPrev);
double pa=atan2(ra_equ-ra_equPrev, dec_equ-dec_equPrev); // position angle: From North counterclockwise!
if (pa<0) pa += 2.*M_PI;
core1->setJD(currentJD); // this calls sync() which sets millis
core1->setMilliSecondsOfLastJDUpdate(millis); // restore millis.
core1->update(0);
return Vec4d(deltaEq*10., pa, (ra_equ-ra_equPrev)*10., (dec_equ-dec_equPrev)*10.);
}
}
SolarEclipseBessel::SolarEclipseBessel(double &besX, double &besY,
double &besD, double &bestf1, double &bestf2, double &besL1, double &besL2, double &besMu)
{
// Besselian elements
// Source: Explanatory Supplement to the Astronomical Ephemeris
// and the American Ephemeris and Nautical Almanac (1961)
StelCore* core = StelApp::getInstance().getCore();
static SolarSystem* ssystem = GETSTELMODULE(SolarSystem);
core->setUseTopocentricCoordinates(false);
core->update(0);
double raMoon, deMoon, raSun, deSun;
StelUtils::rectToSphe(&raSun, &deSun, ssystem->getSun()->getEquinoxEquatorialPos(core));
StelUtils::rectToSphe(&raMoon, &deMoon, ssystem->getMoon()->getEquinoxEquatorialPos(core));
double sdistanceAu = ssystem->getSun()->getEquinoxEquatorialPos(core).norm();
const double earthRadius = ssystem->getEarth()->getEquatorialRadius()*AU;
// Moon's distance in Earth's radius
double mdistanceER = ssystem->getMoon()->getEquinoxEquatorialPos(core).norm() * AU / earthRadius;
// Greenwich Apparent Sidereal Time
const double gast = get_apparent_sidereal_time(core->getJD(), core->getJDE());
// Avoid bug for special cases happen around Vernal Equinox
double raDiff = StelUtils::fmodpos(raMoon-raSun, 2.*M_PI);
if (raDiff>M_PI) raDiff-=2.*M_PI;
constexpr double SunEarth = 109.12278;
// ratio of Sun-Earth radius : 109.12278 = 696000/6378.1366
// Another value is 109.075744787 = 695700/6378.1366
// Earth's equatorial radius = 6378.1366
// Source: IERS Conventions (2003)
// https://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn32.html