Kstars

horizontalcoordinategrid.cpp
1/*
2 SPDX-FileCopyrightText: 2012 Jerome SONRIER <jsid@emor3j.fr.eu.org>
3
4 SPDX-License-Identifier: GPL-2.0-or-later
5*/
6
7#include "horizontalcoordinategrid.h"
8
9#include "kstarsdata.h"
10#include "Options.h"
11#include "linelist.h"
12#ifdef KSTARS_LITE
13#include "skymaplite.h"
14#else
15#include "skymap.h"
16#endif
17#include "skypainter.h"
18
20 : CoordinateGrid(parent, i18n("Horizontal Coordinate Grid"))
21{
22 //KStarsData *data = KStarsData::Instance();
23
24 intro();
25
26 double eps = 0.1;
27 double minAz = 0.0;
28 double maxAz = 359.0;
29 double dAz = 30.0;
30 double minAlt = -80.0;
31 double maxAlt = 90.0;
32 double dAlt = 20.0;
33 double dAlt2 = 4.0;
34 double dAz2 = 0.2;
35
36 double max, alt, alt2, az, az2;
37
38 std::shared_ptr<LineList> lineList;
39
40 for (az = minAz; az < maxAz; az += dAz)
41 {
42 for (alt = -90.0; alt < maxAlt - eps; alt += dAlt)
43 {
44 lineList.reset(new LineList());
45 max = alt + dAlt;
46 if (max > 90.0)
47 max = 90.0;
48 for (alt2 = alt; alt2 <= max + eps; alt2 += dAlt2)
49 {
50 std::shared_ptr<SkyPoint> p(new SkyPoint());
51
52 p->setAz(az);
53 p->setAlt(alt2);
54 //p->HorizontalToEquatorial( data->lst(), data->geo()->lat() );
55 lineList->append(std::move(p));
56 }
57 appendLine(lineList);
58 }
59 }
60
61 for (alt = minAlt; alt < maxAlt + eps; alt += dAlt)
62 {
63 // Do not paint the line on the horizon
64 if (alt < 0.1 && alt > -0.1)
65 continue;
66
67 // Adjust point density
68 int nPoints = int(round(fabs(cos(alt * dms::PI / 180.0)) * dAz / dAz2));
69 if (nPoints < 5)
70 nPoints = 5;
71 double dAz3 = dAz / nPoints;
72
73 for (az = minAz; az < maxAz + eps; az += dAz)
74 {
75 lineList.reset(new LineList());
76 for (az2 = az; az2 <= az + dAz + eps; az2 += dAz3)
77 {
78 std::shared_ptr<SkyPoint> p(new SkyPoint());
79
80 p->setAz(az2);
81 p->setAlt(alt);
82 //p->HorizontalToEquatorial( data->lst(), data->geo()->lat() );
83 lineList->append(std::move(p));
84 }
85 appendLine(lineList);
86 }
87 }
88 summary();
89}
90
92{
93 if (Options::autoSelectGrid())
94 return (Options::useAltAz());
95 else
96#ifndef KSTARS_LITE
97 return (Options::showHorizontalGrid() &&
98 !(Options::hideOnSlew() && Options::hideGrids() && SkyMap::IsSlewing()));
99#else
100 return (Options::showHorizontalGrid() &&
101 !(Options::hideOnSlew() && Options::hideGrids() && SkyMapLite::IsSlewing()));
102#endif
103}
104
106{
107 KStarsData *data = KStarsData::Instance();
108 QColor color = data->colorScheme()->colorNamed("HorizontalGridColor");
109
110 skyp->setPen(QPen(QBrush(color), 2, Qt::DotLine));
111}
112
114{
115 KStarsData *data = KStarsData::Instance();
116
117 for (int i = 0; i < listList().count(); i++)
118 {
119 for (int j = 0; j < listList().at(i)->points()->count(); j++)
120 {
121 listList().at(i)->points()->at(j)->HorizontalToEquatorial(data->lst(), data->geo()->lat());
122 }
123 }
124}
QColor colorNamed(const QString &name) const
Retrieve a color by name.
Collection of all the circles in the coordinate grid.
const CachingDms * lat() const
Definition geolocation.h:70
HorizontalCoordinateGrid(SkyComposite *parent)
Constructor Simply adds all of the coordinate grid circles (meridians and parallels) parent Pointer t...
void update(KSNumbers *) override
Update the sky position(s) of this component.
void preDraw(SkyPainter *skyp) override
Gives the subclasses access to the top of the draw() method.
There are several time-dependent values used in position calculations, that are not specific to an ob...
Definition ksnumbers.h:43
KStarsData is the backbone of KStars.
Definition kstarsdata.h:72
CachingDms * lst()
Definition kstarsdata.h:224
ColorScheme * colorScheme()
Definition kstarsdata.h:172
GeoLocation * geo()
Definition kstarsdata.h:230
void intro()
displays a message that we are loading m_name.
void summary()
prints out some summary statistics if the skyMesh debug is greater than 1.
void appendLine(const std::shared_ptr< LineList > &lineList)
Typically called from within a subclasses constructors.
A simple data container used by LineListIndex.
Definition linelist.h:25
SkyComposite is a kind of container class for SkyComponent objects.
Draws things on the sky, without regard to backend.
Definition skypainter.h:40
The sky coordinates of a point in the sky.
Definition skypoint.h:45
static constexpr double PI
PI is a const static member; it's public so that it can be used anywhere, as long as dms....
Definition dms.h:385
QString i18n(const char *text, const TYPE &arg...)
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