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Reference Guide
TEveBoxSet.cxx
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1 // @(#)root/eve:$Id$
2 // Authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #include "TEveBoxSet.h"
13 #include "TEveShape.h"
14 
15 #include "TRandom.h"
16 
17 /** \class TEveBoxSet
18 \ingroup TEve
19 Collection of 3D primitives (fixed-size boxes, boxes of different
20 sizes, or arbitrary sexto-epipeds, cones). Each primitive can be assigned
21 a signal value and a TRef.
22 
23 A collection of 3D-markers. The way how they are defined depends
24 on the fBoxType data-member.
25  - kBT_FreeBox arbitrary box: specify 8*(x,y,z) box corners
26  - kBT_AABox axis-aligned box: specify (x,y,z) and (w, h, d)
27  - kBT_AABoxFixedDim axis-aligned box w/ fixed dimensions: specify (x,y,z)
28  also set fDefWidth, fDefHeight and fDefDepth
29  - kBT_Cone cone defined with position, axis-vector and radius
30  - EllipticCone cone with elliptic base (specify another radius and angle in deg)
31 
32 Each primitive can be assigned:
33 
34  1. Color or signal value. Thresholds and signal-to-color mapping
35  can then be set dynamically via the TEveRGBAPalette class.
36  2. External TObject* (stored as TRef).
37 
38 See also base-class TEveDigitSet for more information.
39 Tutorial: tutorials/eve/boxset_test.C
40 */
41 
43 
44 ////////////////////////////////////////////////////////////////////////////////
45 
46 TEveBoxSet::TEveBoxSet(const char* n, const char* t) :
47  TEveDigitSet (n, t),
48 
49  fBoxType (kBT_Undef),
50  fDefWidth (1),
51  fDefHeight (1),
52  fDefDepth (1),
53 
54  fBoxSkip (0),
55 
56  fDrawConeCap (kFALSE)
57 {
58  // Constructor.
59 
60  // Override from TEveDigitSet.
62 }
63 
64 ////////////////////////////////////////////////////////////////////////////////
65 /// Return size of data-structure describing a box of type bt.
66 
68 {
69  static const TEveException eH("TEveBoxSet::SizeofAtom ");
70 
71  switch (bt) {
72  case kBT_Undef: return 0;
73  case kBT_FreeBox: return sizeof(BFreeBox_t);
74  case kBT_AABox: return sizeof(BAABox_t);
75  case kBT_AABoxFixedDim: return sizeof(BAABoxFixedDim_t);
76  case kBT_Cone: return sizeof(BCone_t);
77  case kBT_EllipticCone: return sizeof(BEllipticCone_t);
78  default: throw(eH + "unexpected atom type.");
79  }
80  return 0;
81 }
82 
83 ////////////////////////////////////////////////////////////////////////////////
84 /// Reset the data containers to zero size.
85 /// The arguments describe the basic parameters of data storage.
86 
87 void TEveBoxSet::Reset(TEveBoxSet::EBoxType_e boxType, Bool_t valIsCol, Int_t chunkSize)
88 {
89  fBoxType = boxType;
90  fValueIsColor = valIsCol;
91  fDefaultValue = valIsCol ? 0 : kMinInt;
92  if (fOwnIds)
93  ReleaseIds();
94  fPlex.Reset(SizeofAtom(fBoxType), chunkSize);
95 }
96 
97 ////////////////////////////////////////////////////////////////////////////////
98 /// Reset the data containers to zero size.
99 /// Keep the old data-storage parameters.
100 
102 {
103  if (fOwnIds)
104  ReleaseIds();
106 }
107 
108 ////////////////////////////////////////////////////////////////////////////////
109 /// Create a new box from a set of 8 vertices.
110 /// To be used for box-type kBT_FreeBox.
111 
112 void TEveBoxSet::AddBox(const Float_t* verts)
113 {
114  static const TEveException eH("TEveBoxSet::AddBox ");
115 
116  if (fBoxType != kBT_FreeBox)
117  throw(eH + "expect free box-type.");
118 
120  memcpy(b->fVertices, verts, sizeof(b->fVertices));
122 }
123 
124 ////////////////////////////////////////////////////////////////////////////////
125 /// Create a new axis-aligned box from at a given position and with
126 /// specified dimensions.
127 /// To be used for box-type kBT_AABox.
128 
130 {
131  static const TEveException eH("TEveBoxSet::AddBox ");
132 
133  if (fBoxType != kBT_AABox)
134  throw(eH + "expect axis-aligned box-type.");
135 
136  BAABox_t* box = (BAABox_t*) NewDigit();
137  box->fA = a; box->fB = b; box->fC = c;
138  box->fW = w; box->fH = h; box->fD = d;
139 }
140 
141 ////////////////////////////////////////////////////////////////////////////////
142 /// Create a new axis-aligned box from at a given position.
143 /// To be used for box-type kBT_AABoxFixedDim.
144 
146 {
147  static const TEveException eH("TEveBoxSet::AddBox ");
148 
150  throw(eH + "expect axis-aligned fixed-dimension box-type.");
151 
153  box->fA = a; box->fB = b; box->fC = c;
154 }
155 
156 ////////////////////////////////////////////////////////////////////////////////
157 /// Create a cone with apex at pos, axis dir and radius r.
158 /// To be used for box-type kBT_Cone.
159 
160 void TEveBoxSet::AddCone(const TEveVector& pos, const TEveVector& dir, Float_t r)
161 {
162  static const TEveException eH("TEveBoxSet::AddCone ");
163 
164  if (fBoxType != kBT_Cone)
165  throw(eH + "expect cone box-type.");
166 
167  BCone_t* cone = (BCone_t*) NewDigit();
168  cone->fPos = pos;
169  cone->fDir = dir;
170  cone->fR = r;
171 }
172 
173 ////////////////////////////////////////////////////////////////////////////////
174 /// Create a cone with apex at pos, axis dir and radius r.
175 /// To be used for box-type kBT_EllipticCone.
176 
178  Float_t r, Float_t r2, Float_t angle)
179 {
180  static const TEveException eH("TEveBoxSet::AddEllipticCone ");
181 
182  if (fBoxType != kBT_EllipticCone)
183  throw(eH + "expect elliptic-cone box-type.");
184 
186  cone->fPos = pos;
187  cone->fDir = dir;
188  cone->fR = r;
189  cone->fR2 = r2;
190  cone->fAngle = angle;
191 }
192 
193 ////////////////////////////////////////////////////////////////////////////////
194 /// Fill bounding-box information of the base-class TAttBBox (virtual method).
195 /// If member 'TEveFrameBox* fFrame' is set, frame's corners are used as bbox.
196 
198 {
199  static const TEveException eH("TEveBoxSet::ComputeBBox ");
200 
201  if (fFrame != 0)
202  {
203  BBoxInit();
204  Int_t n = fFrame->GetFrameSize() / 3;
205  Float_t *bbps = fFrame->GetFramePoints();
206  for (int i=0; i<n; ++i, bbps+=3)
207  BBoxCheckPoint(bbps);
208  return;
209  }
210 
211  if(fPlex.Size() == 0)
212  {
213  BBoxZero();
214  return;
215  }
216 
217  BBoxInit();
218 
220  switch (fBoxType)
221  {
222 
223  case kBT_FreeBox:
224  {
225  while (bi.next()) {
226  BFreeBox_t& b = * (BFreeBox_t*) bi();
227  for (Int_t i = 0; i < 8; ++i)
229  }
230  break;
231  }
232 
233  case kBT_AABox:
234  {
235  while (bi.next()) {
236  BAABox_t& b = * (BAABox_t*) bi();
237  BBoxCheckPoint(b.fA, b.fB, b.fC);
238  BBoxCheckPoint(b.fA + b.fW, b.fB + b.fH , b.fC + b.fD);
239  }
240  break;
241  }
242 
243  case kBT_AABoxFixedDim:
244  {
245  while (bi.next()) {
246  BAABoxFixedDim_t& b = * (BAABoxFixedDim_t*) bi();
247  BBoxCheckPoint(b.fA, b.fB, b.fC);
249  }
250  break;
251  }
252  case kBT_Cone:
253  {
254  Float_t mag2=0, mag2Max=0, rMax=0;
255  while (bi.next()) {
256  BCone_t& b = * (BCone_t*) bi();
257  BBoxCheckPoint(b.fPos.fX, b.fPos.fY, b.fPos.fZ);
258  mag2 = b.fDir.Mag2();
259  if (mag2>mag2Max) mag2Max=mag2;
260  if (b.fR>rMax) rMax=b.fR;
261  }
262  Float_t off = TMath::Sqrt(mag2Max + rMax*rMax);
263  fBBox[0] -= off;fBBox[2] -= off;fBBox[4] -= off;
264  fBBox[1] += off;fBBox[3] += off;fBBox[5] += off;
265  break;
266  }
267  case kBT_EllipticCone:
268  {
269  Float_t mag2=0, mag2Max=0, rMax=0;
270  while (bi.next()) {
271  BEllipticCone_t& b = * (BEllipticCone_t*) bi();
272  BBoxCheckPoint(b.fPos.fX, b.fPos.fY, b.fPos.fZ);
273  mag2 = b.fDir.Mag2();
274  if (mag2>mag2Max) mag2Max=mag2;
275  if (b.fR > rMax) rMax = b.fR;
276  if (b.fR2 > rMax) rMax = b.fR2;
277  }
278  Float_t off = TMath::Sqrt(mag2Max + rMax*rMax);
279  fBBox[0] -= off;fBBox[2] -= off;fBBox[4] -= off;
280  fBBox[1] += off;fBBox[3] += off;fBBox[5] += off;
281  break;
282  }
283  default:
284  {
285  throw(eH + "unsupported box-type.");
286  }
287 
288  } // end switch box-type
289 }
290 
291 ////////////////////////////////////////////////////////////////////////////////
292 /// Fill the structure with a random set of boxes.
293 
295 {
296  Reset(kBT_AABox, kTRUE, nboxes);
297  TRandom rnd(0);
298  const Float_t origin = 10, size = 2;
299  Int_t color;
300  for(Int_t i=0; i<nboxes; ++i)
301  {
302  AddBox(origin * rnd.Uniform(-1, 1),
303  origin * rnd.Uniform(-1, 1),
304  origin * rnd.Uniform(-1, 1),
305  size * rnd.Uniform(0.1, 1),
306  size * rnd.Uniform(0.1, 1),
307  size * rnd.Uniform(0.1, 1));
308 
309  TEveUtil::ColorFromIdx(rnd.Integer(256), (UChar_t*)&color);
310  DigitValue(color);
311  }
312 }
TEveChunkManager fPlex
Definition: TEveDigitSet.h:65
void Test(Int_t nboxes)
Fill the structure with a random set of boxes.
Definition: TEveBoxSet.cxx:294
DigitBase_t * NewDigit()
Function providing highlight tooltips when always-sec-select is active.
float Float_t
Definition: RtypesCore.h:53
Collection of 3D primitives (fixed-size boxes, boxes of different sizes, or arbitrary sexto-epipeds...
Definition: TEveBoxSet.h:21
Int_t fDefaultValue
Definition: TEveDigitSet.h:60
TH1 * h
Definition: legend2.C:5
void AddEllipticCone(const TEveVector &pos, const TEveVector &dir, Float_t r, Float_t r2, Float_t angle=0)
Create a cone with apex at pos, axis dir and radius r.
Definition: TEveBoxSet.cxx:177
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
TArc * a
Definition: textangle.C:12
void box(Int_t pat, Double_t x1, Double_t y1, Double_t x2, Double_t y2)
Definition: fillpatterns.C:1
Float_t * fBBox
Definition: TAttBBox.h:20
Float_t * GetFramePoints() const
Definition: TEveFrameBox.h:61
static void CheckAndFixBoxOrientationFv(Float_t box[8][3])
Make sure box orientation is consistent with standard arrangement.
Definition: TEveShape.cxx:261
Bool_t fOwnIds
Definition: TEveDigitSet.h:64
void BBoxCheckPoint(Float_t x, Float_t y, Float_t z)
Definition: TAttBBox.h:58
const Int_t kMinInt
Definition: RtypesCore.h:104
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27
virtual UInt_t Integer(UInt_t imax)
Returns a random integer on [ 0, imax-1 ].
Definition: TRandom.cxx:320
void Reset(Int_t atom_size, Int_t chunk_size)
Empty the container and reset it with given atom and chunk sizes.
Float_t fDefWidth
Definition: TEveBoxSet.h:53
Int_t Size() const
TEveFrameBox * fFrame
Definition: TEveDigitSet.h:70
TRandom2 r(17)
Bool_t fDisableLighting
Definition: TEveDigitSet.h:75
Bool_t fValueIsColor
Definition: TEveDigitSet.h:61
void BBoxZero(Float_t epsilon=0, Float_t x=0, Float_t y=0, Float_t z=0)
Create cube of volume (2*epsilon)^3 at (x,y,z).
Definition: TAttBBox.cxx:42
const Bool_t kFALSE
Definition: RtypesCore.h:92
Float_t fDefHeight
Definition: TEveBoxSet.h:54
EBoxType_e fBoxType
Definition: TEveBoxSet.h:51
#define ClassImp(name)
Definition: Rtypes.h:336
void AddCone(const TEveVector &pos, const TEveVector &dir, Float_t r)
Create a cone with apex at pos, axis dir and radius r.
Definition: TEveBoxSet.cxx:160
virtual void ComputeBBox()
Fill bounding-box information of the base-class TAttBBox (virtual method).
Definition: TEveBoxSet.cxx:197
virtual Double_t Uniform(Double_t x1=1)
Returns a uniform deviate on the interval (0, x1).
Definition: TRandom.cxx:606
TEveVector fDir
Definition: TEveBoxSet.h:46
TEveBoxSet(const TEveBoxSet &)
Bool_t next()
Go to next atom.
static void ColorFromIdx(Color_t ci, UChar_t col[4], Bool_t alpha=kTRUE)
Fill col with RGBA values corresponding to index ci.
Definition: TEveUtil.cxx:192
Int_t GetFrameSize() const
Definition: TEveFrameBox.h:60
static Int_t SizeofAtom(EBoxType_e bt)
Return size of data-structure describing a box of type bt.
Definition: TEveBoxSet.cxx:67
Short_t Max(Short_t a, Short_t b)
Definition: TMathBase.h:200
void Reset()
Reset the data containers to zero size.
Definition: TEveBoxSet.cxx:101
you should not use this method at all Int_t Int_t Double_t Double_t Double_t Int_t Double_t Double_t Double_t Double_t b
Definition: TRolke.cxx:630
Exception class thrown by TEve classes and macros.
Definition: TEveUtil.h:102
unsigned char UChar_t
Definition: RtypesCore.h:34
TEveVector fPos
Definition: TEveBoxSet.h:46
Float_t fDefDepth
Definition: TEveBoxSet.h:55
Double_t Sqrt(Double_t x)
Definition: TMath.h:591
void ReleaseIds()
Protected method.
void DigitValue(Int_t value)
Set signal value for the last digit added.
const Bool_t kTRUE
Definition: RtypesCore.h:91
TT Mag2() const
Definition: TEveVector.h:75
const Int_t n
Definition: legend1.C:16
void BBoxInit(Float_t infinity=1e6)
Dynamic Float_t[6] X(min,max), Y(min,max), Z(min,max)
Definition: TAttBBox.cxx:29
Base-class for storage of digit collections; provides transformation matrix (TEveTrans), signal to color mapping (TEveRGBAPalette) and visual grouping (TEveFrameBox).
Definition: TEveDigitSet.h:29
Float_t fVertices[8][3]
Definition: TEveBoxSet.h:38
unsigned int r2[N_CITIES]
Definition: simanTSP.cxx:322
Int_t N() const
void AddBox(const Float_t *verts)
Create a new box from a set of 8 vertices.
Definition: TEveBoxSet.cxx:112