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tree.py
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1 #
2 # This macro displays the Tree data structures
3 #
4 
5 from ROOT import TCanvas, TPaveLabel, TPaveText, TPavesText, TText
6 from ROOT import TArrow, TLine
7 from ROOT import gROOT, gBenchmark
8 
9 #gROOT.Reset()
10 
11 c1 = TCanvas('c1','Tree Data Structure',200,10,750,940)
12 c1.Range(0,-0.1,1,1.15)
13 
14 gBenchmark.Start('tree')
15 
16 branchcolor = 26
17 leafcolor = 30
18 basketcolor = 42
19 offsetcolor = 43
20 #title = TPaveLabel(.3,1.05,.8,1.13,c1.GetTitle())
21 title = TPaveLabel(.3,1.05,.8,1.13,'Tree Data Structure')
22 title.SetFillColor(16)
23 title.Draw()
24 tree = TPaveText(.01,.75,.15,1.00)
25 tree.SetFillColor(18)
26 tree.SetTextAlign(12)
27 tnt = tree.AddText('Tree')
28 tnt.SetTextAlign(22)
29 tnt.SetTextSize(0.030)
30 tree.AddText('fScanField')
31 tree.AddText('fMaxEventLoop')
32 tree.AddText('fMaxVirtualSize')
33 tree.AddText('fEntries')
34 tree.AddText('fDimension')
35 tree.AddText('fSelectedRows')
36 tree.Draw()
37 farm = TPavesText(.01,1.02,.15,1.1,9,'tr')
38 tfarm = farm.AddText('CHAIN')
39 tfarm.SetTextSize(0.024)
40 farm.AddText('Collection')
41 farm.AddText('of Trees')
42 farm.Draw()
43 link = TLine(.15,.92,.80,.92)
44 link.SetLineWidth(2)
45 link.SetLineColor(1)
46 link.Draw()
47 link.DrawLine(.21,.87,.21,.275)
48 link.DrawLine(.23,.87,.23,.375)
49 link.DrawLine(.25,.87,.25,.775)
50 link.DrawLine(.41,.25,.41,-.025)
51 link.DrawLine(.43,.25,.43,.075)
52 link.DrawLine(.45,.25,.45,.175)
53 branch0 = TPaveLabel(.20,.87,.35,.97,'Branch 0')
54 branch0.SetTextSize(0.35)
55 branch0.SetFillColor(branchcolor)
56 branch0.Draw()
57 branch1 = TPaveLabel(.40,.87,.55,.97,'Branch 1')
58 branch1.SetTextSize(0.35)
59 branch1.SetFillColor(branchcolor)
60 branch1.Draw()
61 branch2 = TPaveLabel(.60,.87,.75,.97,'Branch 2')
62 branch2.SetTextSize(0.35)
63 branch2.SetFillColor(branchcolor)
64 branch2.Draw()
65 branch3 = TPaveLabel(.80,.87,.95,.97,'Branch 3')
66 branch3.SetTextSize(0.35)
67 branch3.SetFillColor(branchcolor)
68 branch3.Draw()
69 leaf0 = TPaveLabel(.4,.75,.5,.8,'Leaf 0')
70 leaf0.SetFillColor(leafcolor)
71 leaf0.Draw()
72 leaf1 = TPaveLabel(.6,.75,.7,.8,'Leaf 1')
73 leaf1.SetFillColor(leafcolor)
74 leaf1.Draw()
75 leaf2 = TPaveLabel(.8,.75,.9,.8,'Leaf 2')
76 leaf2.SetFillColor(leafcolor)
77 leaf2.Draw()
78 firstevent = TPaveText(.4,.35,.9,.4)
79 firstevent.AddText('First event of each basket')
80 firstevent.AddText('Array of fMaxBaskets Integers')
81 firstevent.SetFillColor(basketcolor)
82 firstevent.Draw()
83 basket0 = TPaveLabel(.4,.25,.5,.3,'Basket 0')
84 basket0.SetFillColor(basketcolor)
85 basket0.Draw()
86 basket1 = TPaveLabel(.6,.25,.7,.3,'Basket 1')
87 basket1.SetFillColor(basketcolor)
88 basket1.Draw()
89 basket2 = TPaveLabel(.8,.25,.9,.3,'Basket 2')
90 basket2.SetFillColor(basketcolor)
91 basket2.Draw()
92 
93 offset = TPaveText(.55,.15,.9,.2)
94 offset.AddText('Offset of events in fBuffer')
95 offset.AddText('Array of fEventOffsetLen Integers')
96 offset.AddText('(if variable length structure)')
97 offset.SetFillColor(offsetcolor)
98 offset.Draw()
99 buffer = TPaveText(.55,.05,.9,.1)
100 buffer.AddText('Basket buffer')
101 buffer.AddText('Array of fBasketSize chars')
102 buffer.SetFillColor(offsetcolor)
103 buffer.Draw()
104 zipbuffer = TPaveText(.55,-.05,.75,.0)
105 zipbuffer.AddText('Basket compressed buffer')
106 zipbuffer.AddText('(if compression)')
107 zipbuffer.SetFillColor(offsetcolor)
108 zipbuffer.Draw()
109 ar1 = TArrow()
110 ar1.SetLineWidth(2)
111 ar1.SetLineColor(1)
112 ar1.SetFillStyle(1001)
113 ar1.SetFillColor(1)
114 ar1.DrawArrow(.21,.275,.39,.275,0.015,'|>')
115 ar1.DrawArrow(.23,.375,.39,.375,0.015,'|>')
116 ar1.DrawArrow(.25,.775,.39,.775,0.015,'|>')
117 ar1.DrawArrow(.50,.775,.59,.775,0.015,'|>')
118 ar1.DrawArrow(.70,.775,.79,.775,0.015,'|>')
119 ar1.DrawArrow(.50,.275,.59,.275,0.015,'|>')
120 ar1.DrawArrow(.70,.275,.79,.275,0.015,'|>')
121 ar1.DrawArrow(.45,.175,.54,.175,0.015,'|>')
122 ar1.DrawArrow(.43,.075,.54,.075,0.015,'|>')
123 ar1.DrawArrow(.41,-.025,.54,-.025,0.015,'|>')
124 ldot = TLine(.95,.92,.99,.92)
125 ldot.SetLineStyle(3)
126 ldot.Draw()
127 ldot.DrawLine(.9,.775,.99,.775)
128 ldot.DrawLine(.9,.275,.99,.275)
129 ldot.DrawLine(.55,.05,.55,0)
130 ldot.DrawLine(.9,.05,.75,0)
131 pname = TText(.46,.21,'fEventOffset')
132 pname.SetTextFont(72)
133 pname.SetTextSize(0.018)
134 pname.Draw()
135 pname.DrawText(.44,.11,'fBuffer')
136 pname.DrawText(.42,.01,'fZipBuffer')
137 pname.DrawText(.26,.81,'fLeaves = TObjArray of TLeaf')
138 pname.DrawText(.24,.40,'fBasketEvent')
139 pname.DrawText(.22,.31,'fBaskets = TObjArray of TBasket')
140 pname.DrawText(.20,1.0,'fBranches = TObjArray of TBranch')
141 ntleaf = TPaveText(0.30,.42,.62,.7)
142 ntleaf.SetTextSize(0.014)
143 ntleaf.SetFillColor(leafcolor)
144 ntleaf.SetTextAlign(12)
145 ntleaf.AddText('fLen: number of fixed elements')
146 ntleaf.AddText('fLenType: number of bytes of data type')
147 ntleaf.AddText('fOffset: relative to Leaf0-fAddress')
148 ntleaf.AddText('fNbytesIO: number of bytes used for I/O')
149 ntleaf.AddText('fIsPointer: True if pointer')
150 ntleaf.AddText('fIsRange: True if leaf has a range')
151 ntleaf.AddText('fIsUnsigned: True if unsigned')
152 ntleaf.AddText('*fLeafCount: points to Leaf counter')
153 ntleaf.AddText(' ')
154 ntleaf.AddLine(0,0,0,0)
155 ntleaf.AddText('fName = Leaf name')
156 ntleaf.AddText('fTitle = Leaf type (see Type codes)')
157 ntleaf.Draw()
158 type = TPaveText(.65,.42,.95,.7)
159 type.SetTextAlign(12)
160 type.SetFillColor(leafcolor)
161 type.AddText(' ')
162 type.AddText('C : a character string')
163 type.AddText('B : an 8 bit signed integer')
164 type.AddText('b : an 8 bit unsigned integer')
165 type.AddText('S : a 16 bit signed short integer')
166 type.AddText('s : a 16 bit unsigned short integer')
167 type.AddText('I : a 32 bit signed integer')
168 type.AddText('i : a 32 bit unsigned integer')
169 type.AddText('F : a 32 bit floating point')
170 type.AddText('D : a 64 bit floating point')
171 type.AddText('TXXXX : a class name TXXXX')
172 type.Draw()
173 typecode = TPaveLabel(.7,.68,.9,.72,'fType codes')
174 typecode.SetFillColor(leafcolor)
175 typecode.Draw()
176 ldot.DrawLine(.4,.75,.30,.7)
177 ldot.DrawLine(.5,.75,.62,.7)
178 ntbasket = TPaveText(0.02,-0.07,0.35,.25)
179 ntbasket.SetFillColor(basketcolor)
180 ntbasket.SetTextSize(0.014)
181 ntbasket.SetTextAlign(12)
182 ntbasket.AddText('fNbytes: Size of compressed Basket')
183 ntbasket.AddText('fObjLen: Size of uncompressed Basket')
184 ntbasket.AddText('fDatime: Date/Time when written to store')
185 ntbasket.AddText('fKeylen: Number of bytes for the key')
186 ntbasket.AddText('fCycle : Cycle number')
187 ntbasket.AddText('fSeekKey: Pointer to Basket on file')
188 ntbasket.AddText('fSeekPdir: Pointer to directory on file')
189 ntbasket.AddText("fClassName: 'TBasket'")
190 ntbasket.AddText('fName: Branch name')
191 ntbasket.AddText('fTitle: Tree name')
192 ntbasket.AddText(' ')
193 ntbasket.AddLine(0,0,0,0)
194 ntbasket.AddText('fNevBuf: Number of events in Basket')
195 ntbasket.AddText('fLast: pointer to last used byte in Basket')
196 ntbasket.Draw()
197 ldot.DrawLine(.4,.3,0.02,0.25)
198 ldot.DrawLine(.5,.25,0.35,-.07)
199 ldot.DrawLine(.5,.3,0.35,0.25)
200 ntbranch = TPaveText(0.02,0.40,0.18,0.68)
201 ntbranch.SetFillColor(branchcolor)
202 ntbranch.SetTextSize(0.015)
203 ntbranch.SetTextAlign(12)
204 ntbranch.AddText('fBasketSize')
205 ntbranch.AddText('fEventOffsetLen')
206 ntbranch.AddText('fMaxBaskets')
207 ntbranch.AddText('fEntries')
208 ntbranch.AddText('fAddress of Leaf0')
209 ntbranch.AddText(' ')
210 ntbranch.AddLine(0,0,0,0)
211 ntbranch.AddText('fName: Branchname')
212 ntbranch.AddText('fTitle: leaflist')
213 ntbranch.Draw()
214 ldot.DrawLine(.2,.97,.02,.68)
215 ldot.DrawLine(.35,.97,.18,.68)
216 ldot.DrawLine(.35,.87,.18,.40)
217 basketstore = TPavesText(.8,-0.088,0.952,-0.0035,7,'tr')
218 basketstore.SetFillColor(28)
219 basketstore.AddText('Baskets')
220 basketstore.AddText('Stores')
221 basketstore.Draw()
222 c1.Update()
223 
224 gBenchmark.Show('tree')