Kstars

dsosymbolnode.cpp
1 /*
2  SPDX-FileCopyrightText: 2016 Artem Fedoskin <[email protected]>
3  SPDX-License-Identifier: GPL-2.0-or-later
4 */
5 
6 #include "dsosymbolnode.h"
7 
8 #include "deepskyobject.h"
9 #include "Options.h"
10 #include "nodes/ellipsenode.h"
11 
12 #include <QSGFlatColorMaterial>
13 
14 void SymbolNode::updateSymbol(float x, float y, float e, float size)
15 {
16  zoom = Options::zoomFactor();
17  x = 0;
18  y = 0;
19  isize = int(size);
20 
21  dx1 = -0.5 * size;
22  dx2 = 0.5 * size;
23  dy1 = -1.0 * e * size / 2.;
24  dy2 = e * size / 2.;
25  x1 = x + dx1;
26  x2 = x + dx2;
27  y1 = y + dy1;
28  y2 = y + dy2;
29 
30  dxa = -size / 4.;
31  dxb = size / 4.;
32  dya = -1.0 * e * size / 4.;
33  dyb = e * size / 4.;
34  xa = x + dxa;
35  xb = x + dxb;
36  ya = y + dya;
37  yb = y + dyb;
38 }
39 
40 StarSymbol::StarSymbol(const QColor &color) : m_ellipse(new EllipseNode(color))
41 {
42  appendChildNode(m_ellipse);
43 }
44 
45 void StarSymbol::updateSymbol(float x, float y, float e, float size)
46 {
47  SymbolNode::updateSymbol(x, y, e, size);
48  if (size < 2.)
49  size = 2.;
50  if (Options::useAntialias())
51  m_ellipse->updateGeometry(0, 0, size, e * size, false);
52  else
53  m_ellipse->updateGeometry(0, 0, int(size / 2), int(size / 2), false);
54 }
55 
56 AsterismSymbol::AsterismSymbol(const QColor &color)
57 {
58  e1 = new EllipseNode(color);
59  e2 = new EllipseNode(color);
60  e3 = new EllipseNode(color);
61  e4 = new EllipseNode(color);
62  e5 = new EllipseNode(color);
63  e6 = new EllipseNode(color);
64  e7 = new EllipseNode(color);
65  e8 = new EllipseNode(color);
66  appendChildNode(e1);
67  appendChildNode(e2);
68  appendChildNode(e3);
69  appendChildNode(e4);
70  appendChildNode(e5);
71  appendChildNode(e6);
72  appendChildNode(e7);
73  appendChildNode(e8);
74 }
75 
76 void AsterismSymbol::updateSymbol(float x, float y, float e, float size)
77 {
78  SymbolNode::updateSymbol(x, y, e, size);
79  psize = 2.;
80  if (size > 50.)
81  psize *= 2.;
82  if (size > 100.)
83  psize *= 2.;
84 
85  e1->updateGeometry(xa, y1, psize, psize, true);
86  e2->updateGeometry(xb, y1, psize, psize, true);
87  e3->updateGeometry(xa, y2, psize, psize, true);
88  e4->updateGeometry(xb, y2, psize, psize, true);
89  e5->updateGeometry(x1, ya, psize, psize, true);
90  e6->updateGeometry(x1, yb, psize, psize, true);
91  e7->updateGeometry(x2, ya, psize, psize, true);
92  e8->updateGeometry(x2, yb, psize, psize, true);
93 }
94 
95 GlobularClusterSymbol::GlobularClusterSymbol(const QColor &color) : e1(new EllipseNode(color))
96 {
97  appendChildNode(e1);
98 
99  lines = new QSGGeometryNode;
100  appendChildNode(lines);
101 
102  QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 0);
103  geometry->setDrawingMode(GL_LINES);
104  geometry->allocate(4);
105 
106  lines->setGeometry(geometry);
107  lines->setFlag(QSGNode::OwnsGeometry);
108 
109  QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
110  material->setColor(color);
111  lines->setOpaqueMaterial(material);
112  lines->setFlag(QSGNode::OwnsMaterial);
113 }
114 
115 void GlobularClusterSymbol::updateSymbol(float x, float y, float e, float size)
116 {
117  SymbolNode::updateSymbol(x, y, e, size);
118 
119  if (size < 2.)
120  size = 2.;
121  e1->updateGeometry(0, 0, size, e * size, false);
122 
123  QSGGeometry::Point2D *vertex = lines->geometry()->vertexDataAsPoint2D();
124  //First line
125  vertex[0].set(dx1, 0);
126  vertex[1].set(dx2, 0);
127 
128  //Second line
129  vertex[2].set(0, dy1);
130  vertex[3].set(0, dy2);
131 
132  lines->markDirty(QSGNode::DirtyGeometry);
133 }
134 
135 DarkNebulaSymbol::DarkNebulaSymbol(const QColor &color)
136 {
137  lines = new QSGGeometryNode;
138  appendChildNode(lines);
139 
140  QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 0);
141  geometry->setDrawingMode(GL_LINES);
142  geometry->allocate(8);
143 
144  lines->setGeometry(geometry);
145  lines->setFlag(QSGNode::OwnsGeometry);
146 
147  QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
148  material->setColor(color);
149  lines->setOpaqueMaterial(material);
150  lines->setFlag(QSGNode::OwnsMaterial);
151 }
152 
153 void DarkNebulaSymbol::updateSymbol(float x, float y, float e, float size)
154 {
155  SymbolNode::updateSymbol(x, y, e, size);
156 
157  QSGGeometry::Point2D *vertex = lines->geometry()->vertexDataAsPoint2D();
158  //First line
159  vertex[0].set(dx1, dy1);
160  vertex[1].set(dx2, dy1);
161 
162  //Second line
163  vertex[2].set(dx2, dy1);
164  vertex[3].set(dx2, dy2);
165 
166  //Third line
167  vertex[4].set(dx2, dy2);
168  vertex[5].set(dx1, dy2);
169 
170  //Fourth line
171  vertex[6].set(dx1, dy2);
172  vertex[7].set(dx1, dy1);
173 
174  lines->markDirty(QSGNode::DirtyGeometry);
175 }
176 
177 PlanetaryNebulaSymbol::PlanetaryNebulaSymbol(const QColor &color)
178 {
179  e1 = new EllipseNode(color);
180  appendChildNode(e1);
181 
182  lines = new QSGGeometryNode;
183  appendChildNode(lines);
184 
185  QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 0);
186  geometry->setDrawingMode(GL_LINES);
187  geometry->allocate(8);
188 
189  lines->setGeometry(geometry);
190  lines->setFlag(QSGNode::OwnsGeometry);
191 
192  QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
193  material->setColor(color);
194  lines->setOpaqueMaterial(material);
195  lines->setFlag(QSGNode::OwnsMaterial);
196 }
197 
198 void PlanetaryNebulaSymbol::updateSymbol(float x, float y, float e, float size)
199 {
200  SymbolNode::updateSymbol(x, y, e, size);
201 
202  if (size < 2.)
203  size = 2.;
204 
205  e1->updateGeometry(0, 0, size, e * size, false);
206 
207  QSGGeometry::Point2D *vertex = lines->geometry()->vertexDataAsPoint2D();
208  //First line
209  vertex[0].set(0., dy1);
210  vertex[1].set(0., dy1 - e * size / 2.);
211 
212  //Second line
213  vertex[2].set(0., dy2);
214  vertex[3].set(0., dy2 + e * size / 2.);
215 
216  //Third line
217  vertex[4].set(dx1, 0.);
218  vertex[5].set(dx1 - size / 2., 0.);
219 
220  //Fourth line
221  vertex[6].set(dx2, 0.);
222  vertex[7].set(dx2 + size / 2., 0.);
223 
224  lines->markDirty(QSGNode::DirtyGeometry);
225 }
226 
227 SupernovaRemnantSymbol::SupernovaRemnantSymbol(const QColor &color)
228 {
229  lines = new QSGGeometryNode;
230  appendChildNode(lines);
231 
232  QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 0);
233  geometry->setDrawingMode(GL_LINES);
234  geometry->allocate(8);
235 
236  lines->setGeometry(geometry);
237  lines->setFlag(QSGNode::OwnsGeometry);
238 
239  QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
240  material->setColor(color);
241  lines->setOpaqueMaterial(material);
242  lines->setFlag(QSGNode::OwnsMaterial);
243 }
244 
245 void SupernovaRemnantSymbol::updateSymbol(float x, float y, float e, float size)
246 {
247  SymbolNode::updateSymbol(x, y, e, size);
248 
249  QSGGeometry::Point2D *vertex = lines->geometry()->vertexDataAsPoint2D();
250 
251  //First line
252  vertex[0].set(0., dy1);
253  vertex[1].set(dx2, 0.);
254 
255  //Second line
256  vertex[2].set(dx2, 0.);
257  vertex[3].set(0., dy2);
258 
259  //Third line
260  vertex[4].set(0., dy2);
261  vertex[5].set(dx1, 0.);
262 
263  //Fourth line
264  vertex[6].set(dx1, 0.);
265  vertex[7].set(0., dy1);
266 
267  lines->markDirty(QSGNode::DirtyGeometry);
268 }
269 
270 GalaxySymbol::GalaxySymbol(const QColor &color) : e1(new EllipseNode(color))
271 {
272  appendChildNode(e1);
273 }
274 
275 void GalaxySymbol::updateSymbol(float x, float y, float e, float size)
276 {
277  SymbolNode::updateSymbol(x, y, e, size);
278 
279  if (size < 1. && zoom > 20 * MINZOOM)
280  size = 3.; //force ellipse above zoomFactor 20
281  if (size < 1. && zoom > 5 * MINZOOM)
282  size = 1.; //force points above zoomFactor 5
283  if (size > 2.)
284  {
285  e1->updateGeometry(0, 0, size, e * size, false);
286  }
287  else if (size > 0.)
288  {
289  e1->updateGeometry(0, 0, 1, 1, false);
290  }
291 }
292 
293 GalaxyClusterSymbol::GalaxyClusterSymbol(const QColor &color) : lines(new QSGGeometryNode)
294 {
295  QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 0);
296  geometry->setDrawingMode(GL_LINES);
297  geometry->allocate(32);
298 
299  lines->setGeometry(geometry);
300  lines->setFlag(QSGNode::OwnsGeometry);
301 
302  QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
303  material->setColor(color);
304  lines->setOpaqueMaterial(material);
305  lines->setFlag(QSGNode::OwnsMaterial);
306 
307  appendChildNode(lines);
308 }
309 
310 void GalaxyClusterSymbol::updateSymbol(float x, float y, float e, float size)
311 {
312  SymbolNode::updateSymbol(x, y, e, size);
313 
314  psize = 1.;
315  if (size > 50.)
316  psize *= 2.;
317 
318  QSGGeometry::Point2D *vertex = lines->geometry()->vertexDataAsPoint2D();
319 
320  vertex[0].set(xa - psize, y1);
321  vertex[1].set(xa + psize, y1);
322  vertex[2].set(xa, y1 - psize);
323  vertex[3].set(xa, y1 + psize);
324  vertex[4].set(xb - psize, y1);
325  vertex[5].set(xb + psize, y1);
326  vertex[6].set(xb, y1 - psize);
327  vertex[7].set(xb, y1 + psize);
328  vertex[8].set(xa - psize, y2);
329  vertex[9].set(xa + psize, y2);
330  vertex[10].set(xa, y2 - psize);
331  vertex[11].set(xa, y2 + psize);
332  vertex[12].set(xb - psize, y2);
333  vertex[13].set(xb + psize, y2);
334  vertex[14].set(xb, y2 - psize);
335  vertex[15].set(xb, y2 + psize);
336  vertex[16].set(x1 - psize, ya);
337  vertex[17].set(x1 + psize, ya);
338  vertex[18].set(x1, ya - psize);
339  vertex[19].set(x1, ya + psize);
340  vertex[20].set(x1 - psize, yb);
341  vertex[21].set(x1 + psize, yb);
342  vertex[22].set(x1, yb - psize);
343  vertex[23].set(x1, yb + psize);
344  vertex[24].set(x2 - psize, ya);
345  vertex[25].set(x2 + psize, ya);
346  vertex[26].set(x2, ya - psize);
347  vertex[27].set(x2, ya + psize);
348  vertex[28].set(x2 - psize, yb);
349  vertex[29].set(x2 + psize, yb);
350  vertex[30].set(x2, yb - psize);
351  vertex[31].set(x2, yb + psize);
352 
353  lines->markDirty(QSGNode::DirtyGeometry);
354 }
355 
356 DSOSymbolNode::DSOSymbolNode(DeepSkyObject *skyObject, const QColor &color)
357  : m_color(color), m_dso(skyObject)
358 {
359 }
360 
361 void DSOSymbolNode::initSymbol()
362 {
363  if (!m_symbol)
364  {
365  int type = m_dso->type();
366  switch (type)
367  {
368  case 0:
369  case 1:
370  //catalog star
371  m_symbol = new StarSymbol(m_color);
372  break;
373  case 3: //Open cluster; draw circle of points
374  case 13: // Asterism
375  m_symbol = new AsterismSymbol(m_color);
376  break;
377  case 4: //Globular Cluster
378  m_symbol = new GlobularClusterSymbol(m_color);
379  m_rotate = true;
380  break;
381  case 5: //Gaseous Nebula
382  case 15: // Dark Nebula
383  m_symbol = new DarkNebulaSymbol(m_color);
384  m_rotate = true;
385  break;
386  case 6: //Planetary Nebula
387  m_symbol = new PlanetaryNebulaSymbol(m_color);
388  m_rotate = true;
389  break;
390  case 7: //Supernova remnant
391  m_symbol = new SupernovaRemnantSymbol(m_color);
392  m_rotate = true;
393  break;
394  case 8: //Galaxy
395  case 16: // Quasar
396  m_symbol = new GalaxySymbol(m_color);
397  m_rotate = true;
398  break;
399  case 14: // Galaxy cluster - draw a circle of + marks
400  m_symbol = new GalaxyClusterSymbol(m_color);
401  m_rotate = true;
402  break;
403  default:
404  break;
405  }
406  if (m_symbol)
407  addChildNode(m_symbol);
408  }
409 }
410 
411 void DSOSymbolNode::changePos(const QPointF &pos, float positionangle)
412 {
413  QMatrix4x4 m(1, 0, 0, pos.x(), 0, 1, 0, pos.y(), 0, 0, 1, 0, 0, 0, 0, 1);
414  //FIXME: this is probably incorrect (inherited from drawDeepSkyImage())
415  if (m_rotate)
416  {
417  m.rotate(positionangle, 0, 0, 1);
418  }
419 
420  setMatrix(m);
421  markDirty(QSGNode::DirtyMatrix);
422 }
423 
424 void DSOSymbolNode::update(float size, const QPointF &pos, float positionangle)
425 {
426  initSymbol();
427 
428  if (m_symbol)
429  {
430  m_symbol->updateSymbol(pos.x(), pos.y(), m_dso->e(), size);
431  show();
432  changePos(pos, positionangle);
433  }
434  else
435  {
436  qDebug() << "Symbol for object " << m_dso->name() << " wasn't created. Check DSOSymbolNode::initSymbol()";
437  }
438 }
DSOSymbolNode::changePos
void changePos(const QPointF &pos, float positionangle)
Changes position and rotation angle of the symbol.
Definition: dsosymbolnode.cpp:411
QSGGeometry::Point2D::set
void set(float x, float y)
QSGNode::appendChildNode
void appendChildNode(QSGNode *node)
SkyNode::update
virtual void update()
Updates coordinate of the object on SkyMapLite.
Definition: skynode.h:48
QSGGeometry::defaultAttributes_Point2D
const QSGGeometry::AttributeSet & defaultAttributes_Point2D()
QSGTransformNode::setMatrix
void setMatrix(const QMatrix4x4 &matrix)
QSGNode::markDirty
void markDirty(QSGNode::DirtyState bits)
QSGFlatColorMaterial::setColor
void setColor(const QColor &color)
EllipseNode
QSGTransformNode derived node used to draw ellipses.
Definition: ellipsenode.h:22
QMatrix4x4::rotate
void rotate(float angle, const QVector3D &vector)
QSGNode::type
QSGNode::NodeType type() const const
SymbolNode::updateSymbol
virtual void updateSymbol(float x, float y, float e, float size)
Update size and the symbol itself.
Definition: dsosymbolnode.cpp:14
DSOSymbolNode::DSOSymbolNode
DSOSymbolNode(DeepSkyObject *skyObject, const QColor &color=QColor())
Constructor.
Definition: dsosymbolnode.cpp:356
SkyNode::show
virtual void show()
shows all child nodes (sets opacity of m_opacity to 1)
Definition: skynode.cpp:27
DSOSymbolNode::initSymbol
void initSymbol()
Create SymbolNode based on the type of m_dso.
Definition: dsosymbolnode.cpp:361
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