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source: trunk/source/visualization/modeling/src/G4TrajectoryDrawerUtils.cc @ 834

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1	//
2	// ********************************************************************
3	// * License and Disclaimer *
4	// * *
5	// * The Geant4 software is copyright of the Copyright Holders of *
6	// * the Geant4 Collaboration. It is provided under the terms and *
7	// * conditions of the Geant4 Software License, included in the file *
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9	// * include a list of copyright holders. *
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14	// * regarding this software system or assume any liability for its *
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16	// * for the full disclaimer and the limitation of liability. *
17	// * *
18	// * This code implementation is the result of the scientific and *
19	// * technical work of the GEANT4 collaboration. *
20	// * By using, copying, modifying or distributing the software (or *
21	// * any work based on the software) you agree to acknowledge its *
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24	// ********************************************************************
25	//
26	// $Id: G4TrajectoryDrawerUtils.cc,v 1.11 2007/05/30 08:56:55 allison Exp $
27	// GEANT4 tag $Name: $
28	//
29	// Jane Tinslay, John Allison, Joseph Perl November 2005
30	//
31	#include "G4TrajectoryDrawerUtils.hh"
32	#include "G4Colour.hh"
33	#include "G4Polyline.hh"
34	#include "G4Polymarker.hh"
35	#include "G4VTrajectory.hh"
36	#include "G4VTrajectoryPoint.hh"
37	#include "G4VisAttributes.hh"
38	#include "G4VisTrajContext.hh"
39	#include "G4VVisManager.hh"
40	#include "G4UIcommand.hh"
41	#include "G4AttValue.hh"
42
43	namespace G4TrajectoryDrawerUtils {
44
45
46	void GetPoints(const G4VTrajectory& traj, G4Polyline& trajectoryLine,
47	G4Polymarker& auxiliaryPoints, G4Polymarker& stepPoints)
48	{
49	for (G4int i=0; i<traj.GetPointEntries(); i++) {
50	G4VTrajectoryPoint* aTrajectoryPoint = traj.GetPoint(i);
51
52	const std::vector<G4ThreeVector>* auxiliaries
53	= aTrajectoryPoint->GetAuxiliaryPoints();
54
55	if (0 != auxiliaries) {
56	for (size_t iAux=0; iAux<auxiliaries->size(); ++iAux) {
57	const G4ThreeVector pos((*auxiliaries)[iAux]);
58	trajectoryLine.push_back(pos);
59	auxiliaryPoints.push_back(pos);
60	}
61	}
62	const G4ThreeVector pos(aTrajectoryPoint->GetPosition());
63	trajectoryLine.push_back(pos);
64	stepPoints.push_back(pos);
65	}
66	}
67
68	void DrawLineAndPoints(const G4VTrajectory& traj, const G4int& i_mode, const G4Colour& colour, const G4bool& visible) {
69	// If i_mode>=0, draws a trajectory as a polyline (default is blue for
70	// positive, red for negative, green for neutral) and, if i_mode!=0,
71	// adds markers - yellow circles for step points and magenta squares
72	// for auxiliary points, if any - whose screen size in pixels is
73	// given by std::abs(i_mode)/1000. E.g: i_mode = 5000 gives easily
74	// visible markers.
75
76	G4VVisManager* pVVisManager = G4VVisManager::GetConcreteInstance();
77	if (0 == pVVisManager) return;
78
79	const G4double markerSize = std::abs(i_mode)/1000;
80	G4bool lineRequired (i_mode >= 0);
81	G4bool markersRequired (markerSize > 0.);
82
83	// Return if don't need to do anything
84	if (!lineRequired && !markersRequired) return;
85
86	// Get points to draw
87	G4Polyline trajectoryLine;
88	G4Polymarker stepPoints;
89	G4Polymarker auxiliaryPoints;
90
91	GetPoints(traj, trajectoryLine, auxiliaryPoints, stepPoints);
92
93	if (lineRequired) {
94	G4VisAttributes trajectoryLineAttribs(colour);
95	trajectoryLineAttribs.SetVisibility(visible);
96	trajectoryLine.SetVisAttributes(&trajectoryLineAttribs);
97	pVVisManager->Draw(trajectoryLine);
98	}
99
100	if (markersRequired) {
101	auxiliaryPoints.SetMarkerType(G4Polymarker::squares);
102	auxiliaryPoints.SetScreenSize(markerSize);
103	auxiliaryPoints.SetFillStyle(G4VMarker::filled);
104	G4VisAttributes auxiliaryPointsAttribs(G4Colour(0.,1.,1.)); // Magenta
105	auxiliaryPointsAttribs.SetVisibility(visible);
106	auxiliaryPoints.SetVisAttributes(&auxiliaryPointsAttribs);
107	pVVisManager->Draw(auxiliaryPoints);
108
109	stepPoints.SetMarkerType(G4Polymarker::circles);
110	stepPoints.SetScreenSize(markerSize);
111	stepPoints.SetFillStyle(G4VMarker::filled);
112	G4VisAttributes stepPointsAttribs(G4Colour(1.,1.,0.)); // Yellow.
113	stepPoints.SetVisAttributes(&stepPointsAttribs);
114	pVVisManager->Draw(stepPoints);
115	}
116
117	}
118
119	static void GetTimes(const G4VTrajectory& traj,
120	std::vector<G4double>& trajectoryLineTimes,
121	std::vector<G4double>& auxiliaryPointTimes,
122	std::vector<G4double>& stepPointTimes)
123	{
124	// It is important check that the sizes of times vectors produced
125	// by this function matches those of points vectors from
126	// GetPoints. If not, assume that the time information is
127	// invalid.
128
129	G4ThreeVector lastTrajectoryPointPosition;
130	for (G4int i=0; i<traj.GetPointEntries(); i++) {
131	G4VTrajectoryPoint* aTrajectoryPoint = traj.GetPoint(i);
132
133	// Pre- and Post-Point times from the trajectory point...
134	G4double trajectoryPointPreTime = -DBL_MAX;
135	G4double trajectoryPointPostTime = DBL_MAX;
136	std::vector<G4AttValue>* trajectoryPointAttValues =
137	aTrajectoryPoint->CreateAttValues();
138	if (!trajectoryPointAttValues) {
139	G4cout << "G4TrajectoryDrawerUtils::GetTimes: no att values."
140	<< G4endl;
141	return;
142	} else {
143	G4bool foundPreTime = false, foundPostTime = false;
144	for (std::vector<G4AttValue>::iterator i =
145	trajectoryPointAttValues->begin();
146	i != trajectoryPointAttValues->end(); ++i) {
147	if (i->GetName() == "PreT") {
148	trajectoryPointPreTime =
149	G4UIcommand::ConvertToDimensionedDouble(i->GetValue());
150	foundPreTime = true;
151	}
152	if (i->GetName() == "PostT") {
153	trajectoryPointPostTime =
154	G4UIcommand::ConvertToDimensionedDouble(i->GetValue());
155	foundPostTime = true;
156	}
157	}
158	if (!foundPreTime \|\| !foundPostTime) {
159	static G4bool warnedTimesNotFound = false;
160	if (!warnedTimesNotFound) {
161	G4cout <<
162	"WARNING: G4TrajectoryDrawerUtils::GetTimes: times not found."
163	<< G4endl;
164	warnedTimesNotFound = true;
165	}
166	return;
167	}
168	}
169
170	const G4ThreeVector& trajectoryPointPosition =
171	aTrajectoryPoint->GetPosition();
172
173	const std::vector<G4ThreeVector>* auxiliaries
174	= aTrajectoryPoint->GetAuxiliaryPoints();
175
176	if (0 != auxiliaries) {
177	for (size_t iAux=0; iAux<auxiliaries->size(); ++iAux) {
178	// Interpolate time for auxiliary points...
179	const G4ThreeVector pos((*auxiliaries)[iAux]);
180	G4double s1 = (pos - lastTrajectoryPointPosition).mag();
181	G4double s2 = (trajectoryPointPosition - pos).mag();
182	G4double t = trajectoryPointPreTime +
183	(trajectoryPointPostTime - trajectoryPointPreTime) *
184	(s1 / (s1 + s2));
185	trajectoryLineTimes.push_back(t);
186	auxiliaryPointTimes.push_back(t);
187	}
188	}
189
190	trajectoryLineTimes.push_back(trajectoryPointPostTime);
191	stepPointTimes.push_back(trajectoryPointPostTime);
192
193	lastTrajectoryPointPosition = trajectoryPointPosition;
194	}
195	}
196
197	static void SliceLine(G4double timeIncrement,
198	G4Polyline& trajectoryLine,
199	std::vector<G4double>& trajectoryLineTimes)
200	{
201	// Assumes valid arguments from GetPoints and GetTimes.
202
203	G4Polyline newTrajectoryLine;
204	std::vector<G4double> newTrajectoryLineTimes;
205
206	newTrajectoryLine.push_back(trajectoryLine[0]);
207	newTrajectoryLineTimes.push_back(trajectoryLineTimes[0]);
208	size_t lineSize = trajectoryLine.size();
209	if (lineSize > 1) {
210	for (size_t i = 1; i < trajectoryLine.size(); ++i) {
211	G4double deltaT = trajectoryLineTimes[i] - trajectoryLineTimes[i - 1];
212	if (deltaT > 0.) {
213	G4double practicalTimeIncrement =
214	std::max(timeIncrement, deltaT / 100.);
215	for (G4double t =
216	(int(trajectoryLineTimes[i - 1]/practicalTimeIncrement) + 1) *
217	practicalTimeIncrement;
218	t <= trajectoryLineTimes[i];
219	t += practicalTimeIncrement) {
220	G4ThreeVector pos = trajectoryLine[i - 1] +
221	(trajectoryLine[i] - trajectoryLine[i - 1]) *
222	((t - trajectoryLineTimes[i - 1]) / deltaT);
223	newTrajectoryLine.push_back(pos);
224	newTrajectoryLineTimes.push_back(t);
225	}
226	}
227	newTrajectoryLine.push_back(trajectoryLine[i]);
228	newTrajectoryLineTimes.push_back(trajectoryLineTimes[i]);
229	}
230	}
231
232	trajectoryLine = newTrajectoryLine;
233	trajectoryLineTimes = newTrajectoryLineTimes;
234	}
235
236	static void DrawWithoutTime(const G4VisTrajContext& myContext,
237	G4Polyline& trajectoryLine,
238	G4Polymarker& auxiliaryPoints,
239	G4Polymarker& stepPoints)
240	{
241	// Draw without time slice information
242
243	G4VVisManager* pVVisManager = G4VVisManager::GetConcreteInstance();
244	if (0 == pVVisManager) return;
245
246	if (myContext.GetDrawLine()) {
247	G4VisAttributes trajectoryLineAttribs(myContext.GetLineColour());
248	trajectoryLineAttribs.SetVisibility(myContext.GetLineVisible());
249	trajectoryLine.SetVisAttributes(&trajectoryLineAttribs);
250
251	pVVisManager->Draw(trajectoryLine);
252	}
253
254	if (myContext.GetDrawAuxPts() && (auxiliaryPoints.size() > 0)) {
255	auxiliaryPoints.SetMarkerType(myContext.GetAuxPtsType());
256	auxiliaryPoints.SetScreenSize(myContext.GetAuxPtsSize());
257	auxiliaryPoints.SetFillStyle(myContext.GetAuxPtsFillStyle());
258
259	G4VisAttributes auxiliaryPointsAttribs(myContext.GetAuxPtsColour());
260	auxiliaryPointsAttribs.SetVisibility(myContext.GetAuxPtsVisible());
261	auxiliaryPoints.SetVisAttributes(&auxiliaryPointsAttribs);
262
263	pVVisManager->Draw(auxiliaryPoints);
264	}
265
266	if (myContext.GetDrawStepPts() && (stepPoints.size() > 0)) {
267	stepPoints.SetMarkerType(myContext.GetStepPtsType());
268	stepPoints.SetScreenSize(myContext.GetStepPtsSize());
269	stepPoints.SetFillStyle(myContext.GetStepPtsFillStyle());
270
271	G4VisAttributes stepPointsAttribs(myContext.GetStepPtsColour());
272	stepPointsAttribs.SetVisibility(myContext.GetStepPtsVisible());
273	stepPoints.SetVisAttributes(&stepPointsAttribs);
274
275	pVVisManager->Draw(stepPoints);
276	}
277	}
278
279	static void DrawWithTime(const G4VisTrajContext& myContext,
280	G4Polyline& trajectoryLine,
281	G4Polymarker& auxiliaryPoints,
282	G4Polymarker& stepPoints,
283	std::vector<G4double>& trajectoryLineTimes,
284	std::vector<G4double>& auxiliaryPointTimes,
285	std::vector<G4double>& stepPointTimes)
286	{
287	// Draw with time slice information
288
289	G4VVisManager* pVVisManager = G4VVisManager::GetConcreteInstance();
290	if (0 == pVVisManager) return;
291
292	if (myContext.GetDrawLine()) {
293	G4VisAttributes trajectoryLineAttribs(myContext.GetLineColour());
294	trajectoryLineAttribs.SetVisibility(myContext.GetLineVisible());
295
296	for (size_t i = 1; i < trajectoryLine.size(); ++i ) {
297	G4Polyline slice;
298	slice.push_back(trajectoryLine[i -1]);
299	slice.push_back(trajectoryLine[i]);
300	trajectoryLineAttribs.SetStartTime(trajectoryLineTimes[i - 1]);
301	trajectoryLineAttribs.SetEndTime(trajectoryLineTimes[i]);
302	slice.SetVisAttributes(&trajectoryLineAttribs);
303	pVVisManager->Draw(slice);
304	}
305	}
306
307	if (myContext.GetDrawAuxPts() && (auxiliaryPoints.size() > 0)) {
308	G4VisAttributes auxiliaryPointsAttribs(myContext.GetAuxPtsColour());
309	auxiliaryPointsAttribs.SetVisibility(myContext.GetAuxPtsVisible());
310
311	for (size_t i = 0; i < auxiliaryPoints.size(); ++i ) {
312	G4Polymarker point;
313	point.push_back(auxiliaryPoints[i]);
314	point.SetMarkerType(myContext.GetAuxPtsType());
315	point.SetScreenSize(myContext.GetAuxPtsSize());
316	point.SetFillStyle(myContext.GetAuxPtsFillStyle());
317	auxiliaryPointsAttribs.SetStartTime(auxiliaryPointTimes[i]);
318	auxiliaryPointsAttribs.SetEndTime(auxiliaryPointTimes[i]);
319	point.SetVisAttributes(&auxiliaryPointsAttribs);
320	pVVisManager->Draw(point);
321	}
322	}
323
324	if (myContext.GetDrawStepPts() && (stepPoints.size() > 0)) {
325	G4VisAttributes stepPointsAttribs(myContext.GetStepPtsColour());
326	stepPointsAttribs.SetVisibility(myContext.GetStepPtsVisible());
327
328	for (size_t i = 0; i < stepPoints.size(); ++i ) {
329	G4Polymarker point;
330	point.push_back(stepPoints[i]);
331	point.SetMarkerType(myContext.GetStepPtsType());
332	point.SetScreenSize(myContext.GetStepPtsSize());
333	point.SetFillStyle(myContext.GetStepPtsFillStyle());
334	stepPointsAttribs.SetStartTime(stepPointTimes[i]);
335	stepPointsAttribs.SetEndTime(stepPointTimes[i]);
336	point.SetVisAttributes(&stepPointsAttribs);
337	pVVisManager->Draw(point);
338	}
339	}
340	}
341
342	void DrawLineAndPoints(const G4VTrajectory& traj, const G4VisTrajContext& context, const G4int& i_mode)
343	{
344	// Extra copy while i_mode is still around
345	G4VisTrajContext myContext(context);
346
347	if (i_mode != 0) {
348	const G4double markerSize = std::abs(i_mode)/1000;
349	G4bool lineRequired (i_mode >= 0);
350	G4bool markersRequired (markerSize > 0.);
351
352	myContext.SetDrawLine(lineRequired);
353	myContext.SetDrawAuxPts(markersRequired);
354	myContext.SetDrawStepPts(markersRequired);
355
356	myContext.SetAuxPtsSize(markerSize);
357	myContext.SetStepPtsSize(markerSize);
358
359	static G4bool warnedAboutIMode = false;
360
361	if (!warnedAboutIMode) {
362	G4cout<<"Trajectory drawing configuration will be based on imode value of "<<i_mode<<G4endl;
363	warnedAboutIMode = true;
364	}
365	}
366
367	// Return if don't need to do anything
368	if (!myContext.GetDrawLine() && !myContext.GetDrawAuxPts() && !myContext.GetDrawStepPts()) return;
369
370	// Get points to draw
371	G4Polyline trajectoryLine;
372	G4Polymarker stepPoints;
373	G4Polymarker auxiliaryPoints;
374
375	GetPoints(traj, trajectoryLine, auxiliaryPoints, stepPoints);
376
377	if (myContext.GetTimeSliceInterval()) {
378
379	// Get corresponding track time information, if any
380	std::vector<G4double> trajectoryLineTimes;
381	std::vector<G4double> stepPointTimes;
382	std::vector<G4double> auxiliaryPointTimes;
383
384	GetTimes(traj, trajectoryLineTimes, auxiliaryPointTimes, stepPointTimes);
385
386	// Check validity
387	if (trajectoryLineTimes.size() != trajectoryLine.size() \|\|
388	stepPointTimes.size() != stepPoints.size() \|\|
389	auxiliaryPointTimes.size() != auxiliaryPoints.size()) {
390
391	// Revert to drawing without time information...
392	DrawWithoutTime(myContext, trajectoryLine, auxiliaryPoints, stepPoints);
393	} else {
394
395	SliceLine(myContext.GetTimeSliceInterval(),
396	trajectoryLine, trajectoryLineTimes);
397
398	DrawWithTime(myContext,
399	trajectoryLine, auxiliaryPoints, stepPoints,
400	trajectoryLineTimes, auxiliaryPointTimes, stepPointTimes);
401	}
402
403	} else {
404
405	DrawWithoutTime(myContext, trajectoryLine, auxiliaryPoints, stepPoints);
406
407	}
408	}
409	}

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