//*CMZ : 2.20/05 15/12/98 09.17.19 by Rene Brun
//*CMZ : 1.03/09 06/12/97 16.45.59 by Fons Rademakers
//*-- Author : Rene Brun 17/10/95
//*KEEP,CopyRight,T=C.
/*************************************************************************
* Copyright(c) 1995-1999, The ROOT System, All rights reserved. *
* Authors: Rene Brun, Fons Rademakers. *
* For list of contributors see $ROOTSYS/AA_CREDITS. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation for non-commercial purposes is hereby granted without *
* fee, provided that the above copyright notice appears in all copies *
* and that both the copyright notice and this permission notice appear *
* in the supporting documentation. The authors make no claims about the *
* suitability of this software for any purpose. It is provided "as is" *
* without express or implied warranty. *
*************************************************************************/
//*KEND.
#include <fstream.h>
//*KEEP,TROOT.
#include "TROOT.h"
//*KEEP,TArrow.
#include "TArrow.h"
//*KEEP,TVirtualPad.
#include "TVirtualPad.h"
//*KEND.
ClassImp(TArrow)
//______________________________________________________________________________
// Different arrow formats as explained in TArrow::TArrow or in
// the picture below are provided.
// Once an arrow is drawn on the screen:
// - One can click on one of the edges and move this edge.
// - One can click on any other arrow part to move the entire arrow.
//
/*
*/
//
//
//______________________________________________________________________________
TArrow::TArrow(): TLine(),TAttFill()
{
//*-*-*-*-*-*-*-*-*-*-*arrow default constructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ========================
}
//______________________________________________________________________________
TArrow::TArrow(Coord_t x1, Coord_t y1,Coord_t x2, Coord_t y2,
Float_t arrowsize ,Option_t *option)
:TLine(x1,y1,x2,y2), TAttFill(0,1001)
{
//*-*-*-*-*-*-*-*-*-*-*arrow normal constructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ========================
// Define an arrow between points x1,y1 and x2,y2
// the arrowsize is in percentage of the pad height
// Opening angle between the two sides of the arrow is fAngle (60 degrees)
// option = ">" -------->
// option = "<" <--------
// option = "<>" <------->
// option = "<|>" <|-----|> arrow defined by a triangle
// If FillColor == 0 draw open triangle
// else draw full triangle with fillcolor
//
fAngle = 60;
fArrowSize = arrowsize;
fOption = option;
SetLineColor(1);
SetLineStyle(1);
}
//______________________________________________________________________________
TArrow::~TArrow()
{
//*-*-*-*-*-*-*-*-*-*-*arrow default destructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ========================
}
//______________________________________________________________________________
TArrow::TArrow(const TArrow &arrow)
{
((TArrow&)arrow).Copy(*this);
}
//______________________________________________________________________________
void TArrow::Copy(TObject &obj)
{
//*-*-*-*-*-*-*-*-*-*-*Copy this arrow to arrow*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ========================
TLine::Copy(obj);
TAttFill::Copy(((TArrow&)obj));
((TArrow&)obj).fAngle = fAngle;
((TArrow&)obj).fArrowSize = fArrowSize;
((TArrow&)obj).fOption = fOption;
}
//______________________________________________________________________________
void TArrow::Draw(Option_t *option)
{
//*-*-*-*-*-*-*-*-*-*-*Draw this arrow with its current attributes*-*-*-*-*-*-*
//*-* ===========================================
Option_t *opt;
if (strlen(option)) opt = option;
else opt = (char*)GetOption();
AppendPad(opt);
}
//______________________________________________________________________________
void TArrow::DrawArrow(Coord_t x1, Coord_t y1,Coord_t x2, Coord_t y2,
Float_t arrowsize ,Option_t *option)
{
//*-*-*-*-*-*-*-*-*-*-*Draw this arrow with new coordinates*-*-*-*-*-*-*-*-*-*
//*-* ====================================
TArrow *newarrow = new TArrow(x1,y1,x2,y2,arrowsize,option);
TAttLine::Copy(*newarrow);
TAttFill::Copy(*newarrow);
newarrow->AppendPad(option);
}
//______________________________________________________________________________
void TArrow::Paint(Option_t *option)
{
//*-*-*-*-*-*-*-*-*-*-*Paint this arrow with its current attributes*-*-*-*-*-*-*
//*-* ============================================
PaintArrow(fX1, fY1, fX2, fY2, fArrowSize, option);
}
//______________________________________________________________________________
void TArrow::PaintArrow(Coord_t x1, Coord_t y1, Coord_t x2, Coord_t y2,
Float_t, Option_t *option)
{
//*-*-*-*-*-*-*-*-*-*-*Draw this arrow with new coordinates*-*-*-*-*-*-*-*-*-*
//*-* ====================================
//
// (P2)
// -
// . -
// . -
// . -
// -------------------------------------------.(P0)------- (P1)
// . -
// . -
// . -
// -
// (P3)
//
//
TString opt = option;
opt.ToLower();
TAttLine::Modify();
TAttFill::Modify();
//*-*- take u1,v1 as origin. take arrow line as new x axis
Int_t px1 = gPad->XtoAbsPixel(x1);
Int_t py1 = gPad->YtoAbsPixel(y1);
Int_t px2 = gPad->XtoAbsPixel(x2);
Int_t py2 = gPad->YtoAbsPixel(y2);
Float_t lp = TMath::Sqrt(Double_t((px2-px1)*(px2-px1) + (py2-py1)*(py2-py1)));
Float_t rSiz = fArrowSize*gPad->GetAbsHNDC()*gPad->GetWh();
Float_t dSiz = rSiz*TMath::Tan(3.141592*fAngle/360);
if (lp <= 0) return;
Float_t ct = (px2-px1)/lp;
Float_t st = (py1-py2)/lp;
Int_t P2x,P2y,P3x,P3y,P0x,P0y;
if (opt.Contains(">")) {
P2x = px2 - Int_t(rSiz*ct+st*dSiz-0.5);
P2y = py2 + Int_t(rSiz*st-ct*dSiz+0.5);
P3x = px2 - Int_t(rSiz*ct-st*dSiz-0.5);
P3y = py2 + Int_t(rSiz*st+ct*dSiz+0.5);
P0x = px2 - Int_t(rSiz*ct-0.5);
P0y = py2 + Int_t(rSiz*st+0.5);
} else {
P2x = px2;
P2y = py2;
P3x = px2;
P3y = py2;
P0x = px2;
P0y = py2;
}
Int_t P2xL,P2yL,P3xL,P3yL,P0xL,P0yL;
if (opt.Contains("<")) {
P2xL = px1 + Int_t(rSiz*ct-st*dSiz+0.5);
P2yL = py1 - Int_t(rSiz*st+ct*dSiz-0.5);
P3xL = px1 + Int_t(rSiz*ct+st*dSiz+0.5);
P3yL = py1 - Int_t(rSiz*st-ct*dSiz-0.5);
P0xL = px1 + Int_t(rSiz*ct+0.5);
P0yL = py1 - Int_t(rSiz*st-0.5);
} else {
P2xL = px1;
P2yL = py1;
P3xL = px1;
P3yL = py1;
P0xL = px1;
P0yL = py1;
}
Float_t XP2 = gPad->AbsPixeltoX(P2x);
Float_t YP2 = gPad->AbsPixeltoY(P2y);
Float_t XP3 = gPad->AbsPixeltoX(P3x);
Float_t YP3 = gPad->AbsPixeltoY(P3y);
Float_t XP2L = gPad->AbsPixeltoX(P2xL);
Float_t YP2L = gPad->AbsPixeltoY(P2yL);
Float_t XP3L = gPad->AbsPixeltoX(P3xL);
Float_t YP3L = gPad->AbsPixeltoY(P3yL);
Float_t XP0;
Float_t YP0;
Float_t XP0L;
Float_t YP0L;
if (opt.Contains("|")) {
XP0 = gPad->AbsPixeltoX(P0x);
YP0 = gPad->AbsPixeltoY(P0y);
XP0L = gPad->AbsPixeltoX(P0xL);
YP0L = gPad->AbsPixeltoY(P0yL);
}
else {
XP0 = gPad->AbsPixeltoX(px2);
YP0 = gPad->AbsPixeltoY(py2);
XP0L = gPad->AbsPixeltoX(px1);
YP0L = gPad->AbsPixeltoY(py1);
}
gPad->PaintLine(XP0,YP0,XP0L,YP0L);
//*-*- Convert points to pad reference system
Float_t xp1[4],yp1[4],xp2[4],yp2[4];
xp1[0] = XP2; yp1[0] = YP2;
xp1[1] = gPad->AbsPixeltoX(px2); yp1[1] = gPad->AbsPixeltoY(py2);
xp1[2] = XP3; yp1[2] = YP3;
xp1[3] = XP2; yp1[3] = YP2;
xp2[0] = XP2L; yp2[0] = YP2L;
xp2[1] = gPad->AbsPixeltoX(px1); yp2[1] = gPad->AbsPixeltoY(py1);
xp2[2] = XP3L; yp2[2] = YP3L;
xp2[3] = XP2L; yp2[3] = YP2L;
if (opt.Contains(">")) {
if (opt.Contains("|>")) {
if (GetFillColor()) {
gPad->PaintFillArea(3,xp1,yp1);
gPad->PaintPolyLine(4,xp1,yp1);
} else {
gPad->PaintPolyLine(4,xp1,yp1);
}
} else {
gPad->PaintPolyLine(3,xp1,yp1);
}
}
if (opt.Contains("<")) {
if (opt.Contains("<|")) {
if (GetFillColor()) {
gPad->PaintFillArea(3,xp2,yp2);
gPad->PaintPolyLine(4,xp2,yp2);
} else {
gPad->PaintPolyLine(4,xp2,yp2);
}
} else {
gPad->PaintPolyLine(3,xp2,yp2);
}
}
}
//______________________________________________________________________________
void TArrow::SavePrimitive(ofstream &out, Option_t *)
{
// Save primitive as a C++ statement(s) on output stream out
char quote = '"';
if (gROOT->ClassSaved(TArrow::Class())) {
out<<" ";
} else {
out<<" TArrow *";
}
out<<"arrow = new TArrow("<<fX1<<","<<fY1<<","<<fX2<<","<<fY2
<<","<<fArrowSize<<","<<quote<<fOption<<quote<<");"<<endl;
SaveFillAttributes(out,"arrow",0,1);
SaveLineAttributes(out,"arrow",1,1,1);
out<<" arrow->Draw();"<<endl;
}
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