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Reference Guide
TMarker.cxx
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1// @(#)root/graf:$Id$
2// Author: Rene Brun 12/05/95
3
4/*************************************************************************
5 * Copyright (C) 1995-2000, 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 <cstdlib>
13#include <iostream>
14
15#include "TROOT.h"
16#include "TBuffer.h"
17#include "TVirtualPad.h"
18#include "TMarker.h"
19#include "TVirtualX.h"
20#include "TMath.h"
21#include "TPoint.h"
22#include "TText.h"
23#include "snprintf.h"
24
26
27
28/** \class TMarker
29\ingroup BasicGraphics
30
31Manages Markers.
32
33Use the TMarker constructor to create a marker.
34
35~~~ {.cpp}
36 TMarker(Double_t x,Double_t y,Int_t marker)
37~~~
38
39The parameters `x` and `y` are the marker coordinates and `marker` is the marker type.
40
41Use the TPolyMarker to create an array on N points in a 2D space.
42At each point `x[i]`, `y[i]` a marker is drawn.
43
44Use the TAttMarker class to change the attributes color, style and size of a marker.
45
46_**Example**_
47
48- Use the `TAttMarker::SetMarkerSize(size)` method to set the `size` of a marker.
49
50*/
51
52////////////////////////////////////////////////////////////////////////////////
53/// Marker default constructor.
54
56{
57 fX = 0;
58 fY = 0;
59}
60
61////////////////////////////////////////////////////////////////////////////////
62/// Marker normal constructor.
63
66{
67 fX = x;
68 fY = y;
69 fMarkerStyle = marker;
70}
71
72////////////////////////////////////////////////////////////////////////////////
73/// Marker default destructor.
74
76{
77}
78
79////////////////////////////////////////////////////////////////////////////////
80/// Marker copy constructor.
81
82TMarker::TMarker(const TMarker &marker) : TObject(marker), TAttMarker(marker), TAttBBox2D(marker)
83{
84 fX = 0;
85 fY = 0;
86 marker.TMarker::Copy(*this);
87}
88
89////////////////////////////////////////////////////////////////////////////////
90/// Copy this marker to marker.
91
92void TMarker::Copy(TObject &obj) const
93{
94 TObject::Copy(obj);
95 TAttMarker::Copy(((TMarker &)obj));
96 ((TMarker &)obj).fX = fX;
97 ((TMarker &)obj).fY = fY;
98}
99
100////////////////////////////////////////////////////////////////////////////////
101/// Display the table of markers with their numbers.
102
104{
105 TMarker marker;
106 TText text;
107 marker.SetMarkerSize(3);
108 text.SetTextFont(62);
109 text.SetTextAlign(22);
110 text.SetTextSize(0.1);
111 TString atext;
112 Double_t x = 0;
113 Double_t dx = 1/16.0;
114 for (Int_t i=1;i<16;i++) {
115 x += dx;
116 atext.Form("%d",i);
117 marker.SetMarkerStyle(i);
118 marker.DrawMarker(x,.25);
119 text.DrawText(x,.12,atext.Data());
120 atext.Form("%d",i+19);
121 marker.SetMarkerStyle(i+19);
122 marker.DrawMarker(x,.55);
123 text.DrawText(x,.42,atext.Data());
124 atext.Form("%d",i+34);
125 marker.SetMarkerStyle(i+34);
126 marker.DrawMarker(x,.85);
127 text.DrawText(x,.72,atext.Data());
128 }
129}
130
131////////////////////////////////////////////////////////////////////////////////
132/// Display the table of markers with different line widths and their numbers.
133
135{
136 TMarker marker;
137 TText text;
138 marker.SetMarkerSize(3);
139 text.SetTextFont(62);
140 text.SetTextAlign(22);
141 text.SetTextSize(0.075);
142 TString atext;
143 Double_t x = 0;
144 Double_t dx = 1/19.0;
145 for (Int_t i=1;i<19;i++) {
146 x += dx;
147 atext.Form("%d",i+49);
148 marker.SetMarkerStyle(i+49);
149 marker.DrawMarker(x,0.19);
150 text.DrawText(x,0.08,atext.Data());
151 atext.Form("%d",i+67);
152 marker.SetMarkerStyle(i+67);
153 marker.DrawMarker(x,0.42);
154 text.DrawText(x,0.31,atext.Data());
155 atext.Form("%d",i+85);
156 marker.SetMarkerStyle(i+85);
157 marker.DrawMarker(x,0.65);
158 text.DrawText(x,0.54,atext.Data());
159 atext.Form("%d",i+103);
160 marker.SetMarkerStyle(i+103);
161 marker.DrawMarker(x,0.88);
162 text.DrawText(x,0.77,atext.Data());
163 }
164}
165
166////////////////////////////////////////////////////////////////////////////////
167/// Compute distance from point px,py to a marker.
168///
169/// Compute the closest distance of approach from point px,py to this marker.
170/// The distance is computed in pixels units.
171
173{
174 Int_t pxm, pym;
175 if (TestBit(kMarkerNDC)) {
176 pxm = gPad->UtoPixel(fX);
177 pym = gPad->VtoPixel(fY);
178 } else {
179 pxm = gPad->XtoAbsPixel(gPad->XtoPad(fX));
180 pym = gPad->YtoAbsPixel(gPad->YtoPad(fY));
181 }
182 Int_t dist = (Int_t)TMath::Sqrt((px-pxm)*(px-pxm) + (py-pym)*(py-pym));
183
184 //marker size = 1 is about 8 pixels
185 Int_t markerRadius = Int_t(4*fMarkerSize);
186 if (dist <= markerRadius) return 0;
187 if (dist > markerRadius+3) return 999;
188 return dist;
189}
190
191////////////////////////////////////////////////////////////////////////////////
192/// Draw this marker with its current attributes.
193
195{
197
198}
199
200////////////////////////////////////////////////////////////////////////////////
201/// Draw this marker with new coordinates.
202
204{
205 TMarker *newmarker = new TMarker(x, y, 1);
206 TAttMarker::Copy(*newmarker);
207 newmarker->SetBit(kCanDelete);
208 newmarker->AppendPad();
209 return newmarker;
210}
211
212////////////////////////////////////////////////////////////////////////////////
213/// Execute action corresponding to one event.
214///
215/// This member function is called when a marker is clicked with the locator
216///
217/// If Left button is clicked on a marker, the marker is moved to
218/// a new position when the mouse button is released.
219
221{
222 if (!gPad) return;
223
224 TPoint p;
225 static Int_t pxold, pyold;
226 static Bool_t ndcsav;
227 Double_t dpx, dpy, xp1,yp1;
228 Bool_t opaque = gPad->OpaqueMoving();
229
230 if (!gPad->IsEditable()) return;
231
232 switch (event) {
233
234 case kButton1Down:
235 ndcsav = TestBit(kMarkerNDC);
236 if (!opaque) {
237 gVirtualX->SetTextColor(-1); // invalidate current text color (use xor mode)
238 TAttMarker::Modify(); //Change marker attributes only if necessary
239 }
240 // No break !!!
241
242 case kMouseMotion:
243 pxold = px; pyold = py;
244 gPad->SetCursor(kMove);
245 break;
246
247 case kButton1Motion:
248 p.fX = pxold; p.fY = pyold;
249 if (!opaque) gVirtualX->DrawPolyMarker(1, &p);
250 p.fX = px; p.fY = py;
251 if (!opaque) gVirtualX->DrawPolyMarker(1, &p);
252 pxold = px; pyold = py;
253 if (opaque) {
254 if (ndcsav) this->SetNDC(kFALSE);
255 this->SetX(gPad->PadtoX(gPad->AbsPixeltoX(px)));
256 this->SetY(gPad->PadtoY(gPad->AbsPixeltoY(py)));
257 gPad->ShowGuidelines(this, event, 'i', true);
258 gPad->Modified(kTRUE);
259 gPad->Update();
260 }
261 break;
262
263 case kButton1Up:
264 if (opaque) {
265 if (ndcsav && !this->TestBit(kMarkerNDC)) {
266 this->SetX((fX - gPad->GetX1())/(gPad->GetX2()-gPad->GetX1()));
267 this->SetY((fY - gPad->GetY1())/(gPad->GetY2()-gPad->GetY1()));
268 this->SetNDC();
269 }
270 gPad->ShowGuidelines(this, event);
271 } else {
272 if (TestBit(kMarkerNDC)) {
273 dpx = gPad->GetX2() - gPad->GetX1();
274 dpy = gPad->GetY2() - gPad->GetY1();
275 xp1 = gPad->GetX1();
276 yp1 = gPad->GetY1();
277 fX = (gPad->AbsPixeltoX(pxold)-xp1)/dpx;
278 fY = (gPad->AbsPixeltoY(pyold)-yp1)/dpy;
279 } else {
280 fX = gPad->PadtoX(gPad->AbsPixeltoX(px));
281 fY = gPad->PadtoY(gPad->AbsPixeltoY(py));
282 }
283 gPad->Modified(kTRUE);
284 gPad->Update();
285 gVirtualX->SetTextColor(-1);
286 }
287 break;
288 }
289}
290
291////////////////////////////////////////////////////////////////////////////////
292/// List this marker with its attributes.
293
295{
297 printf("Marker X=%f Y=%f marker type=%d\n",fX,fY,fMarkerStyle);
298}
299
300////////////////////////////////////////////////////////////////////////////////
301/// Paint this marker with its current attributes.
302
304{
305 if (!gPad) return;
306 if (TestBit(kMarkerNDC)) {
307 Double_t u = gPad->GetX1() + fX*(gPad->GetX2()-gPad->GetX1());
308 Double_t v = gPad->GetY1() + fY*(gPad->GetY2()-gPad->GetY1());
309 PaintMarker(u,v);
310 } else {
311 PaintMarker(gPad->XtoPad(fX),gPad->YtoPad(fY));
312 }
313}
314
315////////////////////////////////////////////////////////////////////////////////
316/// Draw this marker with new coordinates.
317
319{
320 TAttMarker::Modify(); //Change line attributes only if necessary
321 if (gPad) gPad->PaintPolyMarker(-1,&x,&y,"");
322}
323
324////////////////////////////////////////////////////////////////////////////////
325/// Draw this marker with new coordinates in NDC.
326
328{
329}
330
331////////////////////////////////////////////////////////////////////////////////
332/// Dump this marker with its attributes.
333
335{
336 printf("Marker X=%f Y=%f",fX,fY);
337 if (GetMarkerColor() != 1) printf(" Color=%d",GetMarkerColor());
338 if (GetMarkerStyle() != 1) printf(" MarkerStyle=%d",GetMarkerStyle());
339 if (GetMarkerSize() != 1) printf(" MarkerSize=%f",GetMarkerSize());
340 printf("\n");
341}
342
343////////////////////////////////////////////////////////////////////////////////
344/// Save primitive as a C++ statement(s) on output stream out
345
346void TMarker::SavePrimitive(std::ostream &out, Option_t * /*= ""*/)
347{
348 if (gROOT->ClassSaved(TMarker::Class())) {
349 out<<" ";
350 } else {
351 out<<" TMarker *";
352 }
353 out<<"marker = new TMarker("<<fX<<","<<fY<<","<<fMarkerStyle<<");"<<std::endl;
354
355 SaveMarkerAttributes(out,"marker",1,1,1);
356
357 out<<" marker->Draw();"<<std::endl;
358}
359
360////////////////////////////////////////////////////////////////////////////////
361/// Set NDC mode on if isNDC = kTRUE, off otherwise
362
364{
366 if (isNDC) SetBit(kMarkerNDC);
367}
368
369////////////////////////////////////////////////////////////////////////////////
370/// Stream an object of class TMarker.
371
373{
374 if (R__b.IsReading()) {
375 UInt_t R__s, R__c;
376 Version_t R__v = R__b.ReadVersion(&R__s, &R__c);
377 if (R__v > 1) {
378 R__b.ReadClassBuffer(TMarker::Class(), this, R__v, R__s, R__c);
379 return;
380 }
381 //====process old versions before automatic schema evolution
382 TObject::Streamer(R__b);
384 Float_t x,y;
385 R__b >> x; fX = x;
386 R__b >> y; fY = y;
387 //====end of old versions
388
389 } else {
390 R__b.WriteClassBuffer(TMarker::Class(),this);
391 }
392}
393
394////////////////////////////////////////////////////////////////////////////////
395/// Return the bounding Box of the Line
396
398{
399 Double_t size = this->GetMarkerSize();
400
401 Rectangle_t BBox;
402 BBox.fX = gPad->XtoPixel(fX)+(Int_t)(2*size);
403 BBox.fY = gPad->YtoPixel(fY)-(Int_t)(2*size);
404 BBox.fWidth = 2*size;
405 BBox.fHeight = 2*size;
406 return (BBox);
407}
408
409////////////////////////////////////////////////////////////////////////////////
410/// Return the center of the BoundingBox as TPoint in pixels
411
413{
414 TPoint p;
415 if (!gPad) return (p);
416 p.SetX(gPad->XtoPixel(fX));
417 p.SetY(gPad->YtoPixel(fY));
418 return(p);
419}
420
421////////////////////////////////////////////////////////////////////////////////
422/// Set center of the BoundingBox
423
425{
426 if (!gPad) return;
427 fX = gPad->PixeltoX(p.GetX());
428 fY = gPad->PixeltoY(p.GetY() - gPad->VtoPixel(0));
429}
430
431////////////////////////////////////////////////////////////////////////////////
432/// Set X coordinate of the center of the BoundingBox
433
435{
436 if (!gPad) return;
437 fX = gPad->PixeltoX(x);
438}
439
440////////////////////////////////////////////////////////////////////////////////
441/// Set Y coordinate of the center of the BoundingBox
442
444{
445 if (!gPad) return;
446 fY = gPad->PixeltoY(y - gPad->VtoPixel(0));
447}
448
449////////////////////////////////////////////////////////////////////////////////
450/// Set left hand side of BoundingBox to a value
451/// (resize in x direction on left)
452
454{
455 if (!gPad) return;
456 Double_t size = this->GetMarkerSize();
457 fX = gPad->PixeltoX(x + (Int_t)size);
458}
459
460////////////////////////////////////////////////////////////////////////////////
461/// Set right hand side of BoundingBox to a value
462/// (resize in x direction on right)
463
465{
466 if (!gPad) return;
467 Double_t size = this->GetMarkerSize();
468 fX = gPad->PixeltoX(x - (Int_t)size);
469}
470
471////////////////////////////////////////////////////////////////////////////////
472/// Set top of BoundingBox to a value (resize in y direction on top)
473
475{
476 if (!gPad) return;
477 Double_t size = this->GetMarkerSize();
478 fY = gPad->PixeltoY(y - (Int_t)size - gPad->VtoPixel(0));
479}
480
481////////////////////////////////////////////////////////////////////////////////
482/// Set bottom of BoundingBox to a value
483/// (resize in y direction on bottom)
484
486{
487 if (!gPad) return;
488 Double_t size = this->GetMarkerSize();
489 fY = gPad->PixeltoY(y + (Int_t)size - gPad->VtoPixel(0));
490}
@ kMouseMotion
Definition: Buttons.h:23
@ kButton1Motion
Definition: Buttons.h:20
@ kButton1Up
Definition: Buttons.h:19
@ kButton1Down
Definition: Buttons.h:17
@ kMove
Definition: GuiTypes.h:374
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
int Int_t
Definition: RtypesCore.h:45
short Version_t
Definition: RtypesCore.h:65
const Bool_t kFALSE
Definition: RtypesCore.h:101
float Float_t
Definition: RtypesCore.h:57
const Bool_t kTRUE
Definition: RtypesCore.h:100
const char Option_t
Definition: RtypesCore.h:66
#define ClassImp(name)
Definition: Rtypes.h:375
winID h TVirtualViewer3D TVirtualGLPainter p
Option_t Option_t option
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void pxm
Option_t Option_t TPoint TPoint const char text
#define gROOT
Definition: TROOT.h:404
#define gPad
Definition: TVirtualPad.h:288
#define gVirtualX
Definition: TVirtualX.h:338
Abstract base class for elements drawn in the editor.
Definition: TAttBBox2D.h:19
Marker Attributes class.
Definition: TAttMarker.h:19
virtual void SaveMarkerAttributes(std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t sizdef=1)
Save line attributes as C++ statement(s) on output stream out.
Definition: TAttMarker.cxx:345
virtual void Modify()
Change current marker attributes if necessary.
Definition: TAttMarker.cxx:320
virtual Style_t GetMarkerStyle() const
Return the marker style.
Definition: TAttMarker.h:32
virtual Color_t GetMarkerColor() const
Return the marker color.
Definition: TAttMarker.h:31
virtual Size_t GetMarkerSize() const
Return the marker size.
Definition: TAttMarker.h:33
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition: TAttMarker.h:40
void Copy(TAttMarker &attmarker) const
Copy this marker attributes to a new TAttMarker.
Definition: TAttMarker.cxx:241
virtual void Streamer(TBuffer &)
virtual void SetMarkerSize(Size_t msize=1)
Set the marker size.
Definition: TAttMarker.h:41
Size_t fMarkerSize
Marker size.
Definition: TAttMarker.h:24
Style_t fMarkerStyle
Marker style.
Definition: TAttMarker.h:23
Buffer base class used for serializing objects.
Definition: TBuffer.h:43
virtual Int_t ReadClassBuffer(const TClass *cl, void *pointer, const TClass *onfile_class=0)=0
virtual Version_t ReadVersion(UInt_t *start=0, UInt_t *bcnt=0, const TClass *cl=0)=0
Bool_t IsReading() const
Definition: TBuffer.h:86
virtual Int_t WriteClassBuffer(const TClass *cl, void *pointer)=0
Manages Markers.
Definition: TMarker.h:22
void Streamer(TBuffer &) override
Stream an object of class TMarker.
Definition: TMarker.cxx:372
Double_t fX
X position of marker (left,center,etc..)
Definition: TMarker.h:25
void ExecuteEvent(Int_t event, Int_t px, Int_t py) override
Execute action corresponding to one event.
Definition: TMarker.cxx:220
void ls(Option_t *option="") const override
List this marker with its attributes.
Definition: TMarker.cxx:294
virtual void SetX(Double_t x)
Definition: TMarker.h:53
void SetBBoxCenterY(const Int_t y) override
Set Y coordinate of the center of the BoundingBox.
Definition: TMarker.cxx:443
virtual void SetNDC(Bool_t isNDC=kTRUE)
Set NDC mode on if isNDC = kTRUE, off otherwise.
Definition: TMarker.cxx:363
void SavePrimitive(std::ostream &out, Option_t *option="") override
Save primitive as a C++ statement(s) on output stream out.
Definition: TMarker.cxx:346
void Draw(Option_t *option="") override
Draw this marker with its current attributes.
Definition: TMarker.cxx:194
TMarker()
Marker default constructor.
Definition: TMarker.cxx:55
Double_t fY
Y position of marker (left,center,etc..)
Definition: TMarker.h:26
TPoint GetBBoxCenter() override
Return the center of the BoundingBox as TPoint in pixels.
Definition: TMarker.cxx:412
virtual void SetY(Double_t y)
Definition: TMarker.h:54
void SetBBoxCenterX(const Int_t x) override
Set X coordinate of the center of the BoundingBox.
Definition: TMarker.cxx:434
void SetBBoxY1(const Int_t y) override
Set top of BoundingBox to a value (resize in y direction on top)
Definition: TMarker.cxx:474
void SetBBoxY2(const Int_t y) override
Set bottom of BoundingBox to a value (resize in y direction on bottom)
Definition: TMarker.cxx:485
void Copy(TObject &marker) const override
Copy this marker to marker.
Definition: TMarker.cxx:92
void Paint(Option_t *option="") override
Paint this marker with its current attributes.
Definition: TMarker.cxx:303
virtual ~TMarker()
Marker default destructor.
Definition: TMarker.cxx:75
virtual TMarker * DrawMarker(Double_t x, Double_t y)
Draw this marker with new coordinates.
Definition: TMarker.cxx:203
virtual void PaintMarker(Double_t x, Double_t y)
Draw this marker with new coordinates.
Definition: TMarker.cxx:318
Rectangle_t GetBBox() override
Return the bounding Box of the Line.
Definition: TMarker.cxx:397
void SetBBoxX1(const Int_t x) override
Set left hand side of BoundingBox to a value (resize in x direction on left)
Definition: TMarker.cxx:453
static TClass * Class()
static void DisplayMarkerLineWidths()
Display the table of markers with different line widths and their numbers.
Definition: TMarker.cxx:134
void Print(Option_t *option="") const override
Dump this marker with its attributes.
Definition: TMarker.cxx:334
void SetBBoxCenter(const TPoint &p) override
Set center of the BoundingBox.
Definition: TMarker.cxx:424
Int_t DistancetoPrimitive(Int_t px, Int_t py) override
Compute distance from point px,py to a marker.
Definition: TMarker.cxx:172
void SetBBoxX2(const Int_t x) override
Set right hand side of BoundingBox to a value (resize in x direction on right)
Definition: TMarker.cxx:464
@ kMarkerNDC
Marker position is in NDC.
Definition: TMarker.h:31
static void DisplayMarkerTypes()
Display the table of markers with their numbers.
Definition: TMarker.cxx:103
virtual void PaintMarkerNDC(Double_t u, Double_t v)
Draw this marker with new coordinates in NDC.
Definition: TMarker.cxx:327
Mother of all ROOT objects.
Definition: TObject.h:37
R__ALWAYS_INLINE Bool_t TestBit(UInt_t f) const
Definition: TObject.h:187
virtual void Streamer(TBuffer &)
Stream an object of class TObject.
Definition: TObject.cxx:806
virtual void AppendPad(Option_t *option="")
Append graphics object to current pad.
Definition: TObject.cxx:107
void SetBit(UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f.
Definition: TObject.cxx:698
virtual void Copy(TObject &object) const
Copy this to obj.
Definition: TObject.cxx:63
void ResetBit(UInt_t f)
Definition: TObject.h:186
@ kCanDelete
if object in a list can be deleted
Definition: TObject.h:58
Definition: TPoint.h:31
static void IndentLevel()
Functions used by ls() to indent an object hierarchy.
Definition: TROOT.cxx:2807
Basic string class.
Definition: TString.h:136
const char * Data() const
Definition: TString.h:369
void Form(const char *fmt,...)
Formats a string using a printf style format descriptor.
Definition: TString.cxx:2319
Base class for several text objects.
Definition: TText.h:22
Double_t y[n]
Definition: legend1.C:17
Double_t x[n]
Definition: legend1.C:17
double dist(Rotation3D const &r1, Rotation3D const &r2)
Definition: 3DDistances.cxx:48
Double_t Sqrt(Double_t x)
Returns the square root of x.
Definition: TMath.h:660
Rectangle structure (maps to the X11 XRectangle structure)
Definition: GuiTypes.h:361
Short_t fX
Definition: GuiTypes.h:362
UShort_t fHeight
Definition: GuiTypes.h:363
Short_t fY
Definition: GuiTypes.h:362
UShort_t fWidth
Definition: GuiTypes.h:363