{
"cells": [
{
"cell_type": "markdown",
"id": "b19e19dc",
"metadata": {},
"source": [
"# shapes\n",
" Draw the geometry using the x3d viewver.\n",
" Note that this viewver may also be invoked from the \"View\" menu in\n",
" the canvas tool bar\n",
"\n",
"once in x3d viewer, type m to see the menu.\n",
"For example typing r will show a solid model of this geometry.\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Wim Lavrijsen \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:20 PM."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "a9ff7af6",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:20:24.711641Z"
}
},
"outputs": [],
"source": [
"import ROOT\n",
"\n",
"c1 = ROOT.TCanvas( 'c1', 'Geometry Shapes', 200, 10, 700, 500 )"
]
},
{
"cell_type": "markdown",
"id": "7a1eb487",
"metadata": {},
"source": [
"delete previous geometry objects in case this script is reexecuted"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "996466f4",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:20:24.713894Z",
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"shell.execute_reply": "2026-05-19T20:20:24.825639Z"
}
},
"outputs": [],
"source": [
"if hasattr(ROOT, 'gGeometry') and ROOT.gGeometry:\n",
" ROOT.gGeometry.GetListOfNodes().Delete()\n",
" ROOT.gGeometry.GetListOfShapes().Delete()"
]
},
{
"cell_type": "markdown",
"id": "1abb7ec7",
"metadata": {},
"source": [
" Define some volumes"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "ff6185b6",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:20:24.985642Z"
}
},
"outputs": [],
"source": [
"brik = ROOT.TBRIK( 'BRIK', 'BRIK', 'void', 200, 150, 150 )\n",
"trd1 = ROOT.TTRD1( 'TRD1', 'TRD1', 'void', 200, 50, 100, 100 )\n",
"trd2 = ROOT.TTRD2( 'TRD2', 'TRD2', 'void', 200, 50, 200, 50, 100 )\n",
"trap = ROOT.TTRAP( 'TRAP', 'TRAP', 'void', 190, 0, 0, 60, 40, 90, 15, 120, 80, 180, 15 )\n",
"para = ROOT.TPARA( 'PARA', 'PARA', 'void', 100, 200, 200, 15, 30, 30 )\n",
"gtra = ROOT.TGTRA( 'GTRA', 'GTRA', 'void', 390, 0, 0, 20, 60, 40, 90, 15, 120, 80, 180, 15 )\n",
"tube = ROOT.TTUBE( 'TUBE', 'TUBE', 'void', 150, 200, 400 )\n",
"tubs = ROOT.TTUBS( 'TUBS', 'TUBS', 'void', 80, 100, 100, 90, 235 )\n",
"cone = ROOT.TCONE( 'CONE', 'CONE', 'void', 100, 50, 70, 120, 150 )\n",
"cons = ROOT.TCONS( 'CONS', 'CONS', 'void', 50, 100, 100, 200, 300, 90, 270 )\n",
"sphe = ROOT.TSPHE( 'SPHE', 'SPHE', 'void', 25, 340, 45, 135, 0, 270 )\n",
"sphe1 = ROOT.TSPHE( 'SPHE1', 'SPHE1', 'void', 0, 140, 0, 180, 0, 360 )\n",
"sphe2 = ROOT.TSPHE( 'SPHE2', 'SPHE2', 'void', 0, 200, 10, 120, 45, 145 )\n",
"\n",
"pcon = ROOT.TPCON( 'PCON', 'PCON', 'void', 180, 270, 4 )\n",
"pcon.DefineSection( 0, -200, 50, 100 )\n",
"pcon.DefineSection( 1, -50, 50, 80 )\n",
"pcon.DefineSection( 2, 50, 50, 80 )\n",
"pcon.DefineSection( 3, 200, 50, 100 )\n",
"\n",
"pgon = ROOT.TPGON( 'PGON', 'PGON', 'void', 180, 270, 8, 4 )\n",
"pgon.DefineSection( 0, -200, 50, 100 )\n",
"pgon.DefineSection( 1, -50, 50, 80 )\n",
"pgon.DefineSection( 2, 50, 50, 80 )\n",
"pgon.DefineSection( 3, 200, 50, 100 )"
]
},
{
"cell_type": "markdown",
"id": "aa7775ba",
"metadata": {},
"source": [
" Set shapes attributes"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "36ea8916",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:20:25.099940Z"
}
},
"outputs": [],
"source": [
"brik.SetLineColor( 1 )\n",
"trd1.SetLineColor( 2 )\n",
"trd2.SetLineColor( 3 )\n",
"trap.SetLineColor( 4 )\n",
"para.SetLineColor( 5 )\n",
"gtra.SetLineColor( 7 )\n",
"tube.SetLineColor( 6 )\n",
"tubs.SetLineColor( 7 )\n",
"cone.SetLineColor( 2 )\n",
"cons.SetLineColor( 3 )\n",
"pcon.SetLineColor( 6 )\n",
"pgon.SetLineColor( 2 )\n",
"sphe.SetLineColor(\"kRed\")\n",
"sphe1.SetLineColor(\"black\")\n",
"sphe2.SetLineColor(\"kBlue\")"
]
},
{
"cell_type": "markdown",
"id": "0b0ffab1",
"metadata": {},
"source": [
" Build the geometry hierarchy"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "0fdd310d",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:20:25.101985Z",
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"iopub.status.idle": "2026-05-19T20:20:25.218444Z",
"shell.execute_reply": "2026-05-19T20:20:25.218009Z"
}
},
"outputs": [],
"source": [
"node1 = ROOT.TNode( 'NODE1', 'NODE1', 'BRIK' )\n",
"node1.cd()\n",
"\n",
"node2 = ROOT.TNode( 'NODE2', 'NODE2', 'TRD1', 0, 0, -1000 )\n",
"node3 = ROOT.TNode( 'NODE3', 'NODE3', 'TRD2', 0, 0, 1000 )\n",
"node4 = ROOT.TNode( 'NODE4', 'NODE4', 'TRAP', 0, -1000, 0 )\n",
"node5 = ROOT.TNode( 'NODE5', 'NODE5', 'PARA', 0, 1000, 0 )\n",
"node6 = ROOT.TNode( 'NODE6', 'NODE6', 'TUBE', -1000, 0, 0 )\n",
"node7 = ROOT.TNode( 'NODE7', 'NODE7', 'TUBS', 1000, 0, 0 )\n",
"node8 = ROOT.TNode( 'NODE8', 'NODE8', 'CONE', -300, -300, 0 )\n",
"node9 = ROOT.TNode( 'NODE9', 'NODE9', 'CONS', 300, 300, 0 )\n",
"node10 = ROOT.TNode( 'NODE10', 'NODE10', 'PCON', 0, -1000, -1000 )\n",
"node11 = ROOT.TNode( 'NODE11', 'NODE11', 'PGON', 0, 1000, 1000 )\n",
"node12 = ROOT.TNode( 'NODE12', 'NODE12', 'GTRA', 0, -400, 700 )\n",
"node13 = ROOT.TNode( 'NODE13', 'NODE13', 'SPHE', 10, -400, 500 )\n",
"node14 = ROOT.TNode( 'NODE14', 'NODE14', 'SPHE1', 10, 250, 300 )\n",
"node15 = ROOT.TNode( 'NODE15', 'NODE15', 'SPHE2', 10, -100, -200 )"
]
},
{
"cell_type": "markdown",
"id": "cb384036",
"metadata": {},
"source": [
"for memory management"
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "0ae4d6fa",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:20:25.219997Z",
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"shell.execute_reply": "2026-05-19T20:20:25.322904Z"
}
},
"outputs": [],
"source": [
"list_of_locals = dict(locals())\n",
"for l, o in list_of_locals.items():\n",
" if isinstance( o, ROOT.TShape ) or isinstance( o, ROOT.TNode ):\n",
" ROOT.SetOwnership( o, False )"
]
},
{
"cell_type": "markdown",
"id": "8a066773",
"metadata": {},
"source": [
"Draw this geometry in the current canvas"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "ee8fe03e",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:20:25.324843Z",
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"output_type": "display_data"
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],
"source": [
"node1.cd()\n",
"node1.Draw( 'gl' )\n",
"c1.Update()"
]
},
{
"cell_type": "markdown",
"id": "df33e8a4",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "7aca5a14",
"metadata": {
"collapsed": false,
"execution": {
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],
"source": [
"from ROOT import gROOT \n",
"gROOT.GetListOfCanvases().Draw()"
]
}
],
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"kernelspec": {
"display_name": "Python 3",
"language": "python",
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