Summary

The best way to initialise the drawing package is to call the HPLOT [] initialisation routine HPLINT. This will work independently of the basic graphic package used. The reader should consult the HPLOT documentation for more information on this routine. The drawing package is initialised by:

HPLINT

to initialise the basic graphics package and the HPLOT package;

GDINIT

to initialise the GEANT drawing package.

The main drawing routines are:

GDRAW

to draw a projection view of the detector -- Case 1

GDRVOL

to draw a projection view of the detector -- Case 2

GDRAWC

to draw a cut view of the detector (along one axis)

GDRAWX

to draw a cut view of the detector (from any point)

GDXYZ

to draw tracks at the end of the event

GDCXYZ

to draw tracks at tracking time

GDPART

to draw particle names and track numbers at end of tracks

GDAHIT

to draw one single hit

GDHITS

to draw hits for trajectory type detectors

GDCHIT

to draw hits for calorimeter type detectors

Routines that show how the detector has been modelled are:

GDTREE

to draw a picture with the geometrical tree

GDSPEC

to draw a picture with volume specifications

GDFSPC

to draw several GDSPEC pictures

Routines that perform control operations on view banks are:

GDOPEN

to open a given view bank, identified by a view number; in this way we enter in bank mode

GDCLOS

to close the current view bank, i.e. the last one opened, and restore screen mode

GDSHOW

to show all graphics information contained in a given view bank

GDLENS

to scan interactively the drawing contained in the view bank

GDELET

to delete a given view bank from memory

Routines that allow the visualisation of the detector with hidden line removal are:

GDCGOB

to create CG objects

GDCGSL

to create clipping objects

GDCGCL

to perform boolean operations

GDCGHI

to insert CG objects in HIDE and WIRE structures of faces

GDSHIF

to shift in the space a CG object

GDBOMB

to make the detector explode

Other routines are:

GDOPT

to set drawing options

GDZOOM

to set the zoom parameters

GDAXIS

to draw the axes of the MARS, oriented according to the current view parameters

GDSCAL

to draw the current scale

GDMAN

to draw a profile of a man within the current scale

GDRAWT

to draw text, with software characters

GDRAWV

to draw polylines in 2D user coordinates

GDHEAD

to draw a frame header

GDCOL

to set colour code

GDLW

to set line width

GDCURS

to have an input from the graphics cursor

GDFR3D

to convert from 3D coordinates (either in MARS or DRS) to 2D user coordinates

GD3D3D

to convert from 3D MARS coordinates to 3D Projection Reference System coordinates.

S.Giani, S.Ravndal DRAW010