#include <stdlib.h>
#include "Riostream.h"
#include "TROOT.h"
#include "TLine.h"
#include "TVirtualPad.h"
#include "TClass.h"
#include "TVirtualX.h"
#include "TMath.h"
ClassImp(TLine)
TLine::TLine(): TObject(), TAttLine()
{
}
TLine::TLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
:TObject(), TAttLine()
{
fX1=x1; fY1=y1; fX2=x2; fY2=y2;
}
TLine::~TLine()
{
}
TLine::TLine(const TLine &line) : TObject(line), TAttLine(line)
{
((TLine&)line).Copy(*this);
}
void TLine::Copy(TObject &obj) const
{
TObject::Copy(obj);
TAttLine::Copy(((TLine&)obj));
((TLine&)obj).fX1 = fX1;
((TLine&)obj).fY1 = fY1;
((TLine&)obj).fX2 = fX2;
((TLine&)obj).fY2 = fY2;
}
Int_t TLine::DistancetoPrimitive(Int_t px, Int_t py)
{
if (!TestBit(kLineNDC)) return DistancetoLine(px,py,gPad->XtoPad(fX1),gPad->YtoPad(fY1),gPad->XtoPad(fX2),gPad->YtoPad(fY2));
Double_t x1 = gPad->GetX1() + fX1*(gPad->GetX2()-gPad->GetX1());
Double_t y1 = gPad->GetY1() + fY1*(gPad->GetY2()-gPad->GetY1());
Double_t x2 = gPad->GetX1() + fX2*(gPad->GetX2()-gPad->GetX1());
Double_t y2 = gPad->GetY1() + fY2*(gPad->GetY2()-gPad->GetY1());
return DistancetoLine(px,py,x1,y1,x2,y2);
}
TLine *TLine::DrawLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
{
TLine *newline = new TLine(x1, y1, x2, y2);
TAttLine::Copy(*newline);
newline->SetBit(kCanDelete);
newline->AppendPad();
return newline;
}
TLine *TLine::DrawLineNDC(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
{
TLine *newline = DrawLine(x1, y1, x2, y2);
newline->SetBit(kLineNDC);
return newline;
}
void TLine::ExecuteEvent(Int_t event, Int_t px, Int_t py)
{
Int_t kMaxDiff = 20;
static Int_t d1,d2,px1,px2,py1,py2;
static Int_t pxold, pyold, px1old, py1old, px2old, py2old;
static Bool_t p1, p2, pL;
Double_t dpx,dpy,xp1,yp1;
Int_t dx, dy;
if (!gPad->IsEditable()) return;
switch (event) {
case kButton1Down:
gVirtualX->SetLineColor(-1);
TAttLine::Modify();
case kMouseMotion:
if (TestBit(kLineNDC)) {
px1 = gPad->UtoPixel(fX1);
py1 = gPad->VtoPixel(fY1);
px2 = gPad->UtoPixel(fX2);
py2 = gPad->VtoPixel(fY2);
} else {
px1 = gPad->XtoAbsPixel(gPad->XtoPad(fX1));
py1 = gPad->YtoAbsPixel(gPad->YtoPad(fY1));
px2 = gPad->XtoAbsPixel(gPad->XtoPad(fX2));
py2 = gPad->YtoAbsPixel(gPad->YtoPad(fY2));
}
p1 = p2 = pL = kFALSE;
d1 = abs(px1 - px) + abs(py1-py);
if (d1 < kMaxDiff) {
px1old = px1; py1old = py1;
p1 = kTRUE;
gPad->SetCursor(kPointer);
return;
}
d2 = abs(px2 - px) + abs(py2-py);
if (d2 < kMaxDiff) {
px2old = px2; py2old = py2;
p2 = kTRUE;
gPad->SetCursor(kPointer);
return;
}
pL = kTRUE;
pxold = px; pyold = py;
gPad->SetCursor(kMove);
break;
case kButton1Motion:
if (p1) {
gVirtualX->DrawLine(px1old, py1old, px2, py2);
gVirtualX->DrawLine(px, py, px2, py2);
px1old = px;
py1old = py;
}
if (p2) {
gVirtualX->DrawLine(px1, py1, px2old, py2old);
gVirtualX->DrawLine(px1, py1, px, py);
px2old = px;
py2old = py;
}
if (pL) {
gVirtualX->DrawLine(px1, py1, px2, py2);
dx = px-pxold; dy = py-pyold;
px1 += dx; py1 += dy; px2 += dx; py2 += dy;
gVirtualX->DrawLine(px1, py1, px2, py2);
pxold = px;
pyold = py;
}
break;
case kButton1Up:
if (gROOT->IsEscaped()) {
gROOT->SetEscape(kFALSE);
break;
}
if (TestBit(kLineNDC)) {
dpx = gPad->GetX2() - gPad->GetX1();
dpy = gPad->GetY2() - gPad->GetY1();
xp1 = gPad->GetX1();
yp1 = gPad->GetY1();
if (p1) {
fX1 = (gPad->AbsPixeltoX(px)-xp1)/dpx;
fY1 = (gPad->AbsPixeltoY(py)-yp1)/dpy;
}
if (p2) {
fX2 = (gPad->AbsPixeltoX(px)-xp1)/dpx;
fY2 = (gPad->AbsPixeltoY(py)-yp1)/dpy;
}
if (pL) {
fX1 = (gPad->AbsPixeltoX(px1)-xp1)/dpx;
fY1 = (gPad->AbsPixeltoY(py1)-yp1)/dpy;
fX2 = (gPad->AbsPixeltoX(px2)-xp1)/dpx;
fY2 = (gPad->AbsPixeltoY(py2)-yp1)/dpy;
}
} else {
if (p1) {
fX1 = gPad->PadtoX(gPad->AbsPixeltoX(px));
fY1 = gPad->PadtoY(gPad->AbsPixeltoY(py));
}
if (p2) {
fX2 = gPad->PadtoX(gPad->AbsPixeltoX(px));
fY2 = gPad->PadtoY(gPad->AbsPixeltoY(py));
}
if (pL) {
fX1 = gPad->PadtoX(gPad->AbsPixeltoX(px1));
fY1 = gPad->PadtoY(gPad->AbsPixeltoY(py1));
fX2 = gPad->PadtoX(gPad->AbsPixeltoX(px2));
fY2 = gPad->PadtoY(gPad->AbsPixeltoY(py2));
}
}
if (TestBit(kVertical)) {
if (p1) fX2 = fX1;
if (p2) fX1 = fX2;
}
if (TestBit(kHorizontal)) {
if (p1) fY2 = fY1;
if (p2) fY1 = fY2;
}
gPad->Modified(kTRUE);
gVirtualX->SetLineColor(-1);
break;
case kButton1Locate:
ExecuteEvent(kButton1Down, px, py);
while (1) {
px = py = 0;
event = gVirtualX->RequestLocator(1,1,px,py);
ExecuteEvent(kButton1Motion, px, py);
if (event != -1) {
ExecuteEvent(kButton1Up, px, py);
return;
}
}
}
}
void TLine::ls(Option_t *) const
{
TROOT::IndentLevel();
printf("%s X1=%f Y1=%f X2=%f Y2=%f\n",IsA()->GetName(),fX1,fY1,fX2,fY2);
}
void TLine::Paint(Option_t *)
{
if (TestBit(kLineNDC)) PaintLineNDC(fX1,fY1,fX2,fY2);
else PaintLine(gPad->XtoPad(fX1),gPad->YtoPad(fY1),gPad->XtoPad(fX2),gPad->YtoPad(fY2));
}
void TLine::PaintLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
{
TAttLine::Modify();
gPad->PaintLine(x1,y1,x2,y2);
}
void TLine::PaintLineNDC(Double_t u1, Double_t v1, Double_t u2, Double_t v2)
{
TAttLine::Modify();
gPad->PaintLineNDC(u1,v1,u2,v2);
}
void TLine::Print(Option_t *) const
{
printf("%s X1=%f Y1=%f X2=%f Y2=%f",IsA()->GetName(),fX1,fY1,fX2,fY2);
if (GetLineColor() != 1) printf(" Color=%d",GetLineColor());
if (GetLineStyle() != 1) printf(" Style=%d",GetLineStyle());
if (GetLineWidth() != 1) printf(" Width=%d",GetLineWidth());
printf("\n");
}
void TLine::SavePrimitive(ostream &out, Option_t * )
{
if (gROOT->ClassSaved(TLine::Class())) {
out<<" ";
} else {
out<<" TLine *";
}
out<<"line = new TLine("<<fX1<<","<<fY1<<","<<fX2<<","<<fY2
<<");"<<endl;
SaveLineAttributes(out,"line",1,1,1);
out<<" line->Draw();"<<endl;
}
Bool_t TLine::IsHorizontal()
{
return TestBit(kHorizontal);
}
Bool_t TLine::IsVertical()
{
return TestBit(kVertical);
}
void TLine::SetHorizontal(Bool_t set )
{
SetBit(kHorizontal, set);
if (set) {
SetVertical(kFALSE);
Int_t px1 = gPad->XtoAbsPixel(fX1);
Int_t px2 = gPad->XtoAbsPixel(fX2);
Int_t py1 = gPad->YtoAbsPixel(fY1);
Int_t py2 = gPad->YtoAbsPixel(fY2);
Int_t l = Int_t(TMath::Sqrt((px2-px1)*(px2-px1)+(py2-py1)*(py2-py1)));
if (fX2 >= fX1) fX2 = gPad->AbsPixeltoX(px1+l);
else fX2 = gPad->AbsPixeltoX(px1-l);
fY2 = fY1;
}
}
void TLine::SetVertical(Bool_t set )
{
SetBit(kVertical, set);
if (set) {
SetHorizontal(kFALSE);
Int_t px1 = gPad->XtoAbsPixel(fX1);
Int_t px2 = gPad->XtoAbsPixel(fX2);
Int_t py1 = gPad->YtoAbsPixel(fY1);
Int_t py2 = gPad->YtoAbsPixel(fY2);
Int_t l = Int_t(TMath::Sqrt((px2-px1)*(px2-px1)+(py2-py1)*(py2-py1)));
if (fY2 >= fY1) fY2 = gPad->AbsPixeltoY(py1-l);
else fY2 = gPad->AbsPixeltoY(py1+l);
fX2 = fX1;
}
}
void TLine::Streamer(TBuffer &R__b)
{
if (R__b.IsReading()) {
UInt_t R__s, R__c;
Version_t R__v = R__b.ReadVersion(&R__s, &R__c);
if (R__v > 1) {
R__b.ReadClassBuffer(TLine::Class(), this, R__v, R__s, R__c);
return;
}
TObject::Streamer(R__b);
TAttLine::Streamer(R__b);
Float_t x1,y1,x2,y2;
R__b >> x1; fX1 = x1;
R__b >> y1; fY1 = y1;
R__b >> x2; fX2 = x2;
R__b >> y2; fY2 = y2;
} else {
R__b.WriteClassBuffer(TLine::Class(),this);
}
}
Last change: Wed Jun 25 08:47:57 2008
Last generated: 2008-06-25 08:47
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