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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 ((TMarker&)marker).Copy(*this);
87}
88
89////////////////////////////////////////////////////////////////////////////////
90/// Copy this marker to marker.
91
92void TMarker::Copy(TObject &obj) const
93{
94 TObject::Copy(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 = new TMarker();
106 marker->SetMarkerSize(3);
107 TText *text = new TText();
108 text->SetTextFont(62);
109 text->SetTextAlign(22);
110 text->SetTextSize(0.1);
111 char 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 snprintf(atext,7,"%d",i);
117 marker->SetMarkerStyle(i);
118 marker->DrawMarker(x,.25);
119 text->DrawText(x,.12,atext);
120 snprintf(atext,7,"%d",i+19);
121 marker->SetMarkerStyle(i+19);
122 marker->DrawMarker(x,.55);
123 text->DrawText(x,.42,atext);
124 snprintf(atext,7,"%d",i+34);
125 marker->SetMarkerStyle(i+34);
126 marker->DrawMarker(x,.85);
127 text->DrawText(x,.72,atext);
128 }
129 delete marker;
130 delete text;
131}
132
133////////////////////////////////////////////////////////////////////////////////
134/// Display the table of markers with different line widths and their numbers.
135
137{
138 TMarker *marker = new TMarker();
139 marker->SetMarkerSize(3);
140 TText *text = new TText();
141 text->SetTextFont(62);
142 text->SetTextAlign(22);
143 text->SetTextSize(0.075);
144 char atext[] = " ";
145 Double_t x = 0;
146 Double_t dx = 1/19.0;
147 for (Int_t i=1;i<19;i++) {
148 x += dx;
149 snprintf(atext,7,"%d",i+49);
150 marker->SetMarkerStyle(i+49);
151 marker->DrawMarker(x,0.19);
152 text->DrawText(x,0.08,atext);
153 snprintf(atext,7,"%d",i+67);
154 marker->SetMarkerStyle(i+67);
155 marker->DrawMarker(x,0.42);
156 text->DrawText(x,0.31,atext);
157 snprintf(atext,7,"%d",i+85);
158 marker->SetMarkerStyle(i+85);
159 marker->DrawMarker(x,0.65);
160 text->DrawText(x,0.54,atext);
161 snprintf(atext,7,"%d",i+103);
162 marker->SetMarkerStyle(i+103);
163 marker->DrawMarker(x,0.88);
164 text->DrawText(x,0.77,atext);
165 }
166 delete marker;
167 delete text;
168}
169
170////////////////////////////////////////////////////////////////////////////////
171/// Compute distance from point px,py to a marker.
172///
173/// Compute the closest distance of approach from point px,py to this marker.
174/// The distance is computed in pixels units.
175
177{
178 Int_t pxm, pym;
179 if (TestBit(kMarkerNDC)) {
180 pxm = gPad->UtoPixel(fX);
181 pym = gPad->VtoPixel(fY);
182 } else {
183 pxm = gPad->XtoAbsPixel(gPad->XtoPad(fX));
184 pym = gPad->YtoAbsPixel(gPad->YtoPad(fY));
185 }
186 Int_t dist = (Int_t)TMath::Sqrt((px-pxm)*(px-pxm) + (py-pym)*(py-pym));
187
188 //marker size = 1 is about 8 pixels
189 Int_t markerRadius = Int_t(4*fMarkerSize);
190 if (dist <= markerRadius) return 0;
191 if (dist > markerRadius+3) return 999;
192 return dist;
193}
194
195////////////////////////////////////////////////////////////////////////////////
196/// Draw this marker with its current attributes.
197
199{
201
202}
203
204////////////////////////////////////////////////////////////////////////////////
205/// Draw this marker with new coordinates.
206
208{
209 TMarker *newmarker = new TMarker(x, y, 1);
210 TAttMarker::Copy(*newmarker);
211 newmarker->SetBit(kCanDelete);
212 newmarker->AppendPad();
213 return newmarker;
214}
215
216////////////////////////////////////////////////////////////////////////////////
217/// Execute action corresponding to one event.
218///
219/// This member function is called when a marker is clicked with the locator
220///
221/// If Left button is clicked on a marker, the marker is moved to
222/// a new position when the mouse button is released.
223
225{
226 if (!gPad) return;
227
228 TPoint p;
229 static Int_t pxold, pyold;
230 static Bool_t ndcsav;
231 Double_t dpx, dpy, xp1,yp1;
232 Bool_t opaque = gPad->OpaqueMoving();
233
234 if (!gPad->IsEditable()) return;
235
236 switch (event) {
237
238 case kButton1Down:
239 ndcsav = TestBit(kMarkerNDC);
240 if (!opaque) {
241 gVirtualX->SetTextColor(-1); // invalidate current text color (use xor mode)
242 TAttMarker::Modify(); //Change marker attributes only if necessary
243 }
244 // No break !!!
245
246 case kMouseMotion:
247 pxold = px; pyold = py;
248 gPad->SetCursor(kMove);
249 break;
250
251 case kButton1Motion:
252 p.fX = pxold; p.fY = pyold;
253 if (!opaque) gVirtualX->DrawPolyMarker(1, &p);
254 p.fX = px; p.fY = py;
255 if (!opaque) gVirtualX->DrawPolyMarker(1, &p);
256 pxold = px; pyold = py;
257 if (opaque) {
258 if (ndcsav) this->SetNDC(kFALSE);
259 this->SetX(gPad->PadtoX(gPad->AbsPixeltoX(px)));
260 this->SetY(gPad->PadtoY(gPad->AbsPixeltoY(py)));
261 gPad->ShowGuidelines(this, event, 'i', true);
262 gPad->Modified(kTRUE);
263 gPad->Update();
264 }
265 break;
266
267 case kButton1Up:
268 if (opaque) {
269 if (ndcsav && !this->TestBit(kMarkerNDC)) {
270 this->SetX((fX - gPad->GetX1())/(gPad->GetX2()-gPad->GetX1()));
271 this->SetY((fY - gPad->GetY1())/(gPad->GetY2()-gPad->GetY1()));
272 this->SetNDC();
273 }
274 gPad->ShowGuidelines(this, event);
275 } else {
276 if (TestBit(kMarkerNDC)) {
277 dpx = gPad->GetX2() - gPad->GetX1();
278 dpy = gPad->GetY2() - gPad->GetY1();
279 xp1 = gPad->GetX1();
280 yp1 = gPad->GetY1();
281 fX = (gPad->AbsPixeltoX(pxold)-xp1)/dpx;
282 fY = (gPad->AbsPixeltoY(pyold)-yp1)/dpy;
283 } else {
284 fX = gPad->PadtoX(gPad->AbsPixeltoX(px));
285 fY = gPad->PadtoY(gPad->AbsPixeltoY(py));
286 }
287 gPad->Modified(kTRUE);
288 gPad->Update();
289 gVirtualX->SetTextColor(-1);
290 }
291 break;
292 }
293}
294
295////////////////////////////////////////////////////////////////////////////////
296/// List this marker with its attributes.
297
299{
301 printf("Marker X=%f Y=%f marker type=%d\n",fX,fY,fMarkerStyle);
302}
303
304////////////////////////////////////////////////////////////////////////////////
305/// Paint this marker with its current attributes.
306
308{
309 if (!gPad) return;
310 if (TestBit(kMarkerNDC)) {
311 Double_t u = gPad->GetX1() + fX*(gPad->GetX2()-gPad->GetX1());
312 Double_t v = gPad->GetY1() + fY*(gPad->GetY2()-gPad->GetY1());
313 PaintMarker(u,v);
314 } else {
315 PaintMarker(gPad->XtoPad(fX),gPad->YtoPad(fY));
316 }
317}
318
319////////////////////////////////////////////////////////////////////////////////
320/// Draw this marker with new coordinates.
321
323{
324 TAttMarker::Modify(); //Change line attributes only if necessary
325 if (gPad) gPad->PaintPolyMarker(-1,&x,&y,"");
326}
327
328////////////////////////////////////////////////////////////////////////////////
329/// Draw this marker with new coordinates in NDC.
330
332{
333}
334
335////////////////////////////////////////////////////////////////////////////////
336/// Dump this marker with its attributes.
337
339{
340 printf("Marker X=%f Y=%f",fX,fY);
341 if (GetMarkerColor() != 1) printf(" Color=%d",GetMarkerColor());
342 if (GetMarkerStyle() != 1) printf(" MarkerStyle=%d",GetMarkerStyle());
343 if (GetMarkerSize() != 1) printf(" MarkerSize=%f",GetMarkerSize());
344 printf("\n");
345}
346
347////////////////////////////////////////////////////////////////////////////////
348/// Save primitive as a C++ statement(s) on output stream out
349
350void TMarker::SavePrimitive(std::ostream &out, Option_t * /*= ""*/)
351{
352 if (gROOT->ClassSaved(TMarker::Class())) {
353 out<<" ";
354 } else {
355 out<<" TMarker *";
356 }
357 out<<"marker = new TMarker("<<fX<<","<<fY<<","<<fMarkerStyle<<");"<<std::endl;
358
359 SaveMarkerAttributes(out,"marker",1,1,1);
360
361 out<<" marker->Draw();"<<std::endl;
362}
363
364////////////////////////////////////////////////////////////////////////////////
365/// Set NDC mode on if isNDC = kTRUE, off otherwise
366
368{
370 if (isNDC) SetBit(kMarkerNDC);
371}
372
373////////////////////////////////////////////////////////////////////////////////
374/// Stream an object of class TMarker.
375
377{
378 if (R__b.IsReading()) {
379 UInt_t R__s, R__c;
380 Version_t R__v = R__b.ReadVersion(&R__s, &R__c);
381 if (R__v > 1) {
382 R__b.ReadClassBuffer(TMarker::Class(), this, R__v, R__s, R__c);
383 return;
384 }
385 //====process old versions before automatic schema evolution
386 TObject::Streamer(R__b);
388 Float_t x,y;
389 R__b >> x; fX = x;
390 R__b >> y; fY = y;
391 //====end of old versions
392
393 } else {
394 R__b.WriteClassBuffer(TMarker::Class(),this);
395 }
396}
397
398////////////////////////////////////////////////////////////////////////////////
399/// Return the bounding Box of the Line
400
402{
403 Double_t size = this->GetMarkerSize();
404
405 Rectangle_t BBox;
406 BBox.fX = gPad->XtoPixel(fX)+(Int_t)(2*size);
407 BBox.fY = gPad->YtoPixel(fY)-(Int_t)(2*size);
408 BBox.fWidth = 2*size;
409 BBox.fHeight = 2*size;
410 return (BBox);
411}
412
413////////////////////////////////////////////////////////////////////////////////
414/// Return the center of the BoundingBox as TPoint in pixels
415
417{
418 TPoint p;
419 if (!gPad) return (p);
420 p.SetX(gPad->XtoPixel(fX));
421 p.SetY(gPad->YtoPixel(fY));
422 return(p);
423}
424
425////////////////////////////////////////////////////////////////////////////////
426/// Set center of the BoundingBox
427
429{
430 if (!gPad) return;
431 fX = gPad->PixeltoX(p.GetX());
432 fY = gPad->PixeltoY(p.GetY() - gPad->VtoPixel(0));
433}
434
435////////////////////////////////////////////////////////////////////////////////
436/// Set X coordinate of the center of the BoundingBox
437
439{
440 if (!gPad) return;
441 fX = gPad->PixeltoX(x);
442}
443
444////////////////////////////////////////////////////////////////////////////////
445/// Set Y coordinate of the center of the BoundingBox
446
448{
449 if (!gPad) return;
450 fY = gPad->PixeltoY(y - gPad->VtoPixel(0));
451}
452
453////////////////////////////////////////////////////////////////////////////////
454/// Set left hand side of BoundingBox to a value
455/// (resize in x direction on left)
456
458{
459 if (!gPad) return;
460 Double_t size = this->GetMarkerSize();
461 fX = gPad->PixeltoX(x + (Int_t)size);
462}
463
464////////////////////////////////////////////////////////////////////////////////
465/// Set right hand side of BoundingBox to a value
466/// (resize in x direction on right)
467
469{
470 if (!gPad) return;
471 Double_t size = this->GetMarkerSize();
472 fX = gPad->PixeltoX(x - (Int_t)size);
473}
474
475////////////////////////////////////////////////////////////////////////////////
476/// Set top of BoundingBox to a value (resize in y direction on top)
477
479{
480 if (!gPad) return;
481 Double_t size = this->GetMarkerSize();
482 fY = gPad->PixeltoY(y - (Int_t)size - gPad->VtoPixel(0));
483}
484
485////////////////////////////////////////////////////////////////////////////////
486/// Set bottom of BoundingBox to a value
487/// (resize in y direction on bottom)
488
490{
491 if (!gPad) return;
492 Double_t size = this->GetMarkerSize();
493 fY = gPad->PixeltoY(y + (Int_t)size - gPad->VtoPixel(0));
494}
@ 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
#define snprintf
Definition: civetweb.c:1540
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:376
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:224
void ls(Option_t *option="") const override
List this marker with its attributes.
Definition: TMarker.cxx:298
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:447
virtual void SetNDC(Bool_t isNDC=kTRUE)
Set NDC mode on if isNDC = kTRUE, off otherwise.
Definition: TMarker.cxx:367
void SavePrimitive(std::ostream &out, Option_t *option="") override
Save primitive as a C++ statement(s) on output stream out.
Definition: TMarker.cxx:350
void Draw(Option_t *option="") override
Draw this marker with its current attributes.
Definition: TMarker.cxx:198
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:416
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:438
void SetBBoxY1(const Int_t y) override
Set top of BoundingBox to a value (resize in y direction on top)
Definition: TMarker.cxx:478
void SetBBoxY2(const Int_t y) override
Set bottom of BoundingBox to a value (resize in y direction on bottom)
Definition: TMarker.cxx:489
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:307
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:207
virtual void PaintMarker(Double_t x, Double_t y)
Draw this marker with new coordinates.
Definition: TMarker.cxx:322
Rectangle_t GetBBox() override
Return the bounding Box of the Line.
Definition: TMarker.cxx:401
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:457
static TClass * Class()
static void DisplayMarkerLineWidths()
Display the table of markers with different line widths and their numbers.
Definition: TMarker.cxx:136
void Print(Option_t *option="") const override
Dump this marker with its attributes.
Definition: TMarker.cxx:338
void SetBBoxCenter(const TPoint &p) override
Set center of the BoundingBox.
Definition: TMarker.cxx:428
Int_t DistancetoPrimitive(Int_t px, Int_t py) override
Compute distance from point px,py to a marker.
Definition: TMarker.cxx:176
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:468
@ 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:331
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:696
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
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)
Definition: TMath.h:641
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