Kstars

milkyway.cpp
1/*
2 SPDX-FileCopyrightText: 2005 Jason Harris <kstars@30doradus.org>
3
4 SPDX-License-Identifier: GPL-2.0-or-later
5*/
6
7#include "milkyway.h"
8
9#include "ksfilereader.h"
10#include "kstarsdata.h"
11#ifdef KSTARS_LITE
12#include "skymaplite.h"
13#else
14#include "skymap.h"
15#endif
16#include "Options.h"
17#include "skypainter.h"
18#include "skycomponents/skiphashlist.h"
19#include "skymapcomposite.h"
20#include "solarsystemcomposite.h"
21#include "kssun.h"
22
23#include <QtConcurrent>
24
25MilkyWay::MilkyWay(SkyComposite *parent) : LineListIndex(parent, i18n("Milky Way"))
26{
27 intro();
28 // Milky way
29 //loadContours("milkyway.dat", i18n("Loading Milky Way"));
30 // Magellanic clouds
31 //loadContours("lmc.dat", i18n("Loading Large Magellanic Clouds"));
32 //loadContours("smc.dat", i18n("Loading Small Magellanic Clouds"));
33 //summary();
34
35#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
36 QtConcurrent::run(&MilkyWay::loadContours, this, QString("milkyway.dat"), i18n("Loading Milky Way"));
37 QtConcurrent::run(&MilkyWay::loadContours, this, QString("lmc.dat"), i18n("Loading Large Magellanic Clouds"));
38 QtConcurrent::run(&MilkyWay::loadContours, this, QString("smc.dat"), i18n("Loading Small Magellanic Clouds"));
39#else
40 QtConcurrent::run(this, &MilkyWay::loadContours, QString("milkyway.dat"), i18n("Loading Milky Way"));
41 QtConcurrent::run(this, &MilkyWay::loadContours, QString("lmc.dat"), i18n("Loading Large Magellanic Clouds"));
42 QtConcurrent::run(this, &MilkyWay::loadContours, QString("smc.dat"), i18n("Loading Small Magellanic Clouds"));
43#endif
44}
45
46const IndexHash &MilkyWay::getIndexHash(LineList *lineList)
47{
48 SkipHashList *skipList = dynamic_cast<SkipHashList *>(lineList);
49 return skyMesh()->indexLine(skipList->points(), skipList->skipHash());
50}
51
52SkipHashList *MilkyWay::skipList(LineList *lineList)
53{
54 return dynamic_cast<SkipHashList *>(lineList);
55}
56
57bool MilkyWay::selected()
58{
59#ifndef KSTARS_LITE
60 return Options::showMilkyWay() && !(Options::hideOnSlew() && Options::hideMilkyWay() && SkyMap::IsSlewing());
61#else
62 return Options::showMilkyWay() && !(Options::hideOnSlew() && Options::hideMilkyWay() && SkyMapLite::IsSlewing());
63#endif
64}
65
66void MilkyWay::draw(SkyPainter *skyp)
67{
68 if (!selected())
69 return;
70
71 QColor color = KStarsData::Instance()->colorScheme()->colorNamed("MWColor");
72 if (Options::simulateDaytime())
73 {
74 KSSun *sun = KStarsData::Instance()->skyComposite()->solarSystemComposite()->sun();
75 if (sun)
76 {
77 // No Milky Way in the daytime. Blends into sky color.
78 QColor mwDayColor = KStarsData::Instance()->colorScheme()->colorNamed("SkyColorDaytime");
79 const double nightFraction = sun->nightFraction();
80 const double dayFraction = 1 - nightFraction;
81 color = QColor(nightFraction * color.red() + dayFraction * mwDayColor.red(),
82 nightFraction * color.green() + dayFraction * mwDayColor.green(),
83 nightFraction * color.blue() + dayFraction * mwDayColor.blue());
84 }
85 }
86
87 skyp->setPen(QPen(color, 3, Qt::SolidLine));
88 skyp->setBrush(QBrush(color));
89
90 if (Options::fillMilkyWay())
91 {
92 drawFilled(skyp);
93 }
94 else
95 {
96 drawLines(skyp);
97 }
98}
99
100void MilkyWay::loadContours(QString fname, QString greeting)
101{
102 KSFileReader fileReader;
103 std::shared_ptr<LineList> skipList;
104 int iSkip = 0;
105
106 if (!fileReader.open(fname))
107 return;
108
109 fileReader.setProgress(greeting, 2136, 5);
110 while (fileReader.hasMoreLines())
111 {
112 QString line = fileReader.readLine();
113 QChar firstChar = line.at(0);
114
115 fileReader.showProgress();
116 if (firstChar == '#')
117 continue;
118
119 bool okRA = false, okDec = false;
120 double ra = line.mid(2, 8).toDouble(&okRA);
121 double dec = line.mid(11, 8).toDouble(&okDec);
122
123 if (!okRA || !okDec)
124 {
125 qDebug() << Q_FUNC_INFO << QString("%1: conversion error on line: %2\n").arg(fname).arg(fileReader.lineNumber());
126 continue;
127 }
128
129 if (firstChar == 'M')
130 {
131 if (skipList.get())
132 appendBoth(skipList);
133 skipList.reset();
134 iSkip = 0;
135 }
136
137 if (!skipList.get())
138 skipList.reset(new SkipHashList());
139
140 std::shared_ptr<SkyPoint> point(new SkyPoint(ra, dec));
141
142 skipList->append(std::move(point));
143 if (firstChar == 'S')
144 static_cast<SkipHashList*>(skipList.get())->setSkip(iSkip);
145
146 iSkip++;
147 }
148 if (skipList.get())
149 appendBoth(skipList);
150}
ColorScheme::colorNamed
QColor colorNamed(const QString &name) const
Retrieve a color by name.
Definition colorscheme.cpp:89
KSFileReader
I totally rewrote this because the earlier scheme of reading all the lines of a file into a buffer be...
Definition ksfilereader.h:55
KSFileReader::lineNumber
int lineNumber() const
returns the current line number
Definition ksfilereader.h:113
KSFileReader::setProgress
void setProgress(QString label, unsigned int lastLine, unsigned int numUpdates=10)
Prepares this instance to emit progress reports on how much of the file has been read (in percent).
Definition ksfilereader.cpp:73
KSFileReader::readLine
QString readLine()
increments the line number and returns the next line from the file as a QString.
Definition ksfilereader.h:106
KSFileReader::hasMoreLines
bool hasMoreLines() const
Definition ksfilereader.h:101
KSFileReader::open
bool open(const QString &fname)
opens the file fname from the QStandardPaths::AppLocalDataLocation directory and uses that file for t...
Definition ksfilereader.cpp:40
KSFileReader::showProgress
void showProgress()
emits progress reports when required and updates bookkeeping for when to send the next report.
Definition ksfilereader.cpp:85
KSSun
Child class of KSPlanetBase; encapsulates information about the Sun.
Definition kssun.h:24
KStarsData::colorScheme
ColorScheme * colorScheme()
Definition kstarsdata.h:174
KStarsData::skyComposite
SkyMapComposite * skyComposite()
Definition kstarsdata.h:168
LineListIndex
Contains almost all the code needed for indexing and drawing and clipping lines and polygons.
Definition linelistindex.h:30
LineListIndex::drawLines
void drawLines(SkyPainter *skyp)
Draws all the lines in m_listList as simple lines in float mode.
Definition linelistindex.cpp:180
LineListIndex::intro
void intro()
displays a message that we are loading m_name.
Definition linelistindex.cpp:234
LineListIndex::appendBoth
void appendBoth(const std::shared_ptr< LineList > &lineList)
a convenience method that adds a lineList to both the lineIndex and the polyIndex.
Definition linelistindex.cpp:100
LineListIndex::skyMesh
SkyMesh * skyMesh()
Returns the SkyMesh object.
Definition linelistindex.h:99
LineListIndex::drawFilled
void drawFilled(SkyPainter *skyp)
Draws all the lines in m_listList as filled polygons in float mode.
Definition linelistindex.cpp:203
LineList
A simple data container used by LineListIndex.
Definition linelist.h:25
LineList::points
SkyList * points()
return the list of points for iterating or appending (or whatever).
Definition linelist.h:33
MilkyWay::loadContours
void loadContours(QString fname, QString greeting)
Load skiplists from file.
Definition milkyway.cpp:100
MilkyWay::skipList
SkipHashList * skipList(LineList *lineList) override
Returns a boolean indicating whether to skip the i-th line segment in the SkipList skipList.
Definition milkyway.cpp:52
MilkyWay::selected
bool selected() override
Definition milkyway.cpp:57
MilkyWay::getIndexHash
const IndexHash & getIndexHash(LineList *skipList) override
Returns an IndexHash from the SkyMesh that contains the set of trixels that cover the SkipList lineLi...
Definition milkyway.cpp:46
MilkyWay::draw
void draw(SkyPainter *skyp) override
The top level draw routine.
Definition milkyway.cpp:66
MilkyWay::MilkyWay
MilkyWay(SkyComposite *parent)
Constructor parent pointer to the parent SkyComposite.
Definition milkyway.cpp:25
SkyComposite
SkyComposite is a kind of container class for SkyComponent objects.
Definition skycomposite.h:30
SkyMesh::indexLine
const IndexHash & indexLine(SkyList *points)
fills a QHash with the trixel indices needed to cover all the line segments specified in the QVector<...
Definition skymesh.cpp:126
SkyPainter
Draws things on the sky, without regard to backend.
Definition skypainter.h:40
SkyPainter::setBrush
virtual void setBrush(const QBrush &brush)=0
Set the brush of the painter.
SkyPainter::setPen
virtual void setPen(const QPen &pen)=0
Set the pen of the painter.
i18n
QString i18n(const char *text, const TYPE &arg...)
QColor::blue
int blue() const const
QColor::green
int green() const const
QColor::red
int red() const const
QString::arg
QString arg(Args &&... args) const const
QString::at
const QChar at(qsizetype position) const const
QString::mid
QString mid(qsizetype position, qsizetype n) const const
QString::toDouble
double toDouble(bool *ok) const const
Qt::SolidLine
SolidLine
QtConcurrent::run
QFuture< T > run(Function function,...)
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