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1 | /** @file |
| 2 | @brief Implementation of an Axis in a Flow "histogram" */ |
| 3 | #include "flow/AliFMDFlowAxis.h" |
| 4 | #include <cmath> |
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5 | #include <iostream> |
| 6 | #include <iomanip> |
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7 | |
| 8 | //==================================================================== |
| 9 | AliFMDFlowAxis::AliFMDFlowAxis(UShort_t n, Double_t* bins) |
| 10 | : fN(n), |
| 11 | fBins(0) |
| 12 | { |
| 13 | fBins = new Double_t[fN+1]; |
| 14 | for (UInt_t i = 0; i <= fN; i++) fBins[i] = bins[i]; |
| 15 | } |
| 16 | //____________________________________________________________________ |
| 17 | AliFMDFlowAxis::AliFMDFlowAxis(UShort_t n, Double_t min, Double_t max) |
| 18 | : fN(n), |
| 19 | fBins(0) |
| 20 | { |
| 21 | fBins = new Double_t[fN+1]; |
| 22 | Double_t dx = (max-min)/fN; |
| 23 | for (UInt_t i = 0; i <= fN; i++) fBins[i] = min + i * dx; |
| 24 | } |
| 25 | //____________________________________________________________________ |
| 26 | AliFMDFlowAxis::AliFMDFlowAxis(const AliFMDFlowAxis& other) |
| 27 | : fN(other.fN), |
| 28 | fBins(0) |
| 29 | { |
| 30 | fBins = new Double_t[fN+1]; |
| 31 | for (UInt_t i = 0; i <= fN; i++) fBins[i] = other.fBins[i]; |
| 32 | } |
| 33 | //____________________________________________________________________ |
| 34 | AliFMDFlowAxis& |
| 35 | AliFMDFlowAxis::operator=(const AliFMDFlowAxis& other) |
| 36 | { |
| 37 | if (fBins) delete [] fBins; |
| 38 | fN = other.fN; |
| 39 | fBins = new Double_t[fN+1]; |
| 40 | for (UInt_t i = 0; i <= fN; i++) fBins[i] = other.fBins[i]; |
| 41 | return *this; |
| 42 | } |
| 43 | //____________________________________________________________________ |
| 44 | AliFMDFlowAxis::~AliFMDFlowAxis() |
| 45 | { |
| 46 | if (fBins) delete [] fBins; |
| 47 | fBins = 0; |
| 48 | } |
| 49 | //____________________________________________________________________ |
| 50 | Int_t |
| 51 | AliFMDFlowAxis::FindBin(Double_t x) const |
| 52 | { |
| 53 | if (x < fBins[0]) return -1; |
| 54 | if (x > fBins[fN]) return -1; |
| 55 | UInt_t above, below, middle; |
| 56 | above = fN+2; |
| 57 | below = 0; |
| 58 | while((above - below) > 1) { |
| 59 | middle = (above + below) / 2; |
| 60 | if (x == fBins[middle-1]) return middle-1; |
| 61 | if (x < fBins[middle-1]) above = middle; |
| 62 | else below = middle; |
| 63 | } |
| 64 | return below-1; |
| 65 | } |
| 66 | //____________________________________________________________________ |
| 67 | Double_t |
| 68 | AliFMDFlowAxis::BinWidth(UShort_t i) const |
| 69 | { |
| 70 | if (i >= fN) return 0; |
| 71 | return (fBins[i+1] - fBins[i]); |
| 72 | } |
| 73 | //____________________________________________________________________ |
| 74 | Double_t |
| 75 | AliFMDFlowAxis::BinCenter(UShort_t i) const |
| 76 | { |
| 77 | if (i >= fN) return 0; |
| 78 | return fBins[i] + BinWidth(i) / 2; |
| 79 | } |
| 80 | //____________________________________________________________________ |
| 81 | Double_t |
| 82 | AliFMDFlowAxis::BinLower(UShort_t i) const |
| 83 | { |
| 84 | if (i >= fN) return 0; |
| 85 | return fBins[i]; |
| 86 | } |
| 87 | //____________________________________________________________________ |
| 88 | Double_t |
| 89 | AliFMDFlowAxis::BinUpper(UShort_t i) const |
| 90 | { |
| 91 | if (i >= fN) return 0; |
| 92 | return fBins[i+1]; |
| 93 | } |
| 94 | |
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95 | //____________________________________________________________________ |
| 96 | void |
| 97 | AliFMDFlowAxis::Print(Option_t*) const |
| 98 | { |
| 99 | std::ios_base::fmtflags old_flags = std::cout.setf(std::ios_base::fixed, |
| 100 | std::ios_base::floatfield); |
| 101 | for (UShort_t i = 0; i < fN; i++) |
| 102 | std::cout << std::setw(5) << BinLower(i) << " - " |
| 103 | << std::setw(5) << BinUpper(i) << std::endl; |
| 104 | std::cout.setf(old_flags, std::ios_base::floatfield); |
| 105 | } |
| 106 | |
| 107 | |
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108 | //____________________________________________________________________ |
| 109 | // |
| 110 | // EOF |
| 111 | // |
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