I still had this old macro laying around that shows how to draw polyline3d's
in a TView. And if you uncomment the TBRIK stuff you also get the brik.
Cheers, Fons.
void massimo( int numberOfPoints = 10, float range = 100.0 )
{
gROOT->Reset();
TStopwatch timer;
timer.Start();
TCanvas *c1 = gROOT->FindObject( "c1" );
if ( c1 ) c1->Delete();
// create and open the default canvas
TCanvas *c1 = new TCanvas( "c1" );
// create a view and set the range
TView *view = new TView( 1 );
view->SetRange( -110, -110, -110, range, range, range );
// create a PolyMarker3D
TPolyMarker3D *pm3d = new TPolyMarker3D( numberOfPoints );
// create a PolyLine3D
TPolyLine3D *pl3d = new TPolyLine3D( numberOfPoints );
// set the points
for( int i = 0; i < numberOfPoints; i++ ) {
float x = fmod( (double) rand(), (double) range );
float y = fmod( (double) rand(), (double) range );
float z = fmod( (double) rand(), (double) range );
pm3d->SetPoint( i, x, y, z );
pl3d->SetPoint( i, x, y, z );
}
// set the marker size, color & style
pm3d->SetMarkerSize( 2 );
pm3d->SetMarkerColor( 5 );
pm3d->SetMarkerStyle( 4 );
// set the line color & style
pl3d->SetLineColor( 6 );
//draw
pm3d->Draw();
pl3d->Draw();
/*
// Define some volumes
TBRIK *brik = new TBRIK( "BRIK", "BRIK", "void", 10, 20, 30 );
// Set shapes attributes
brik->SetLineColor( 2 );
// Build the geometry hierarchy
TNode *node1 = new TNode( "NODE1", "NODE1", "BRIK", 30, 30, 30 );
// Draw this geometry in the current canvas
node1->Draw("same");
c1->Update();
*/
TPaveText *text = new TPaveText( 0.1, 0.81, 0.9, 0.97 );
text->SetFillColor( 24 );
text->AddText("ROOT example: massimo.C");
char timeStr[60];
sprintf( timeStr, "Number of points: %d", numberOfPoints );
text->AddText(timeStr);
sprintf( timeStr, "Execution time: %g sec.", timer.CpuTime() );
text->AddText(timeStr);
text.Draw();
}
Michael Katz-Hyman wrote:
>
> When I input the following commands into the root interpreter, nothing
> happens, or at least from all i can tell, am i doing something horribly
> wrong with TPolylLine3D?
>
> Mike
>
> // code
>
> CINT/ROOT C/C++ Interpreter version 5.13.83, Dec 2 1998
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
> root [0] new TCanvas("c","c",500,500)
> (class TCanvas*)0x84c9968
> root [1] TPolyLine3D track(2);
> root [2] track.SetPoint(0,0,0,0);
> root [3] track.SetPoint(1,20,20,20);
> root [4] track.Draw();
> root [5]
>
> // end code
-- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7677910