Mercurial > gemma
annotate cmd/octree2contour/main.go @ 792:ce23a4192788
Removed dead code.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 27 Sep 2018 09:55:25 +0200 |
parents | 39b5cf9a6b8f |
children | 52cb0b82b490 |
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1 package main |
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2 |
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3 import ( |
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4 "flag" |
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5 "log" |
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6 "runtime" |
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7 "sort" |
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8 "sync" |
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9 "time" |
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10 |
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11 "gemma.intevation.de/gemma/pkg/octree" |
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12 ) |
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13 |
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14 var ( |
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15 one = flag.Bool("o", false, "create only a single contour") |
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16 step = flag.Float64("s", 0.5, "step with") |
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17 max = flag.Float64("m", 10, "max height from lowest point") |
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18 bottleneck = flag.String("bottleneck", "", "bottleneck id") |
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19 date = flag.String("date", "", "date info") |
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20 ) |
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21 |
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22 func processLevels( |
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23 tree *octree.Tree, |
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24 jobs <-chan float64, |
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25 results chan<- result, |
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26 wg *sync.WaitGroup, |
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27 ) { |
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28 defer wg.Done() |
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29 for h := range jobs { |
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30 var lines octree.MultiLineStringZ |
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31 tree.Horizontal(h, func(t *octree.Triangle) { |
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32 line := t.IntersectHorizontal(h) |
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33 if len(line) > 1 { |
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34 lines = append(lines, line) |
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35 } |
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36 }) |
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37 results <- result{h, lines} |
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38 } |
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39 } |
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40 |
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41 func process(tree *octree.Tree) []result { |
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42 |
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43 if *one { |
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44 var lines octree.MultiLineStringZ |
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45 tree.Horizontal(*step, func(t *octree.Triangle) { |
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46 line := t.IntersectHorizontal(*step) |
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47 if len(line) > 0 { |
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48 lines = append(lines, line) |
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49 } |
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50 }) |
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51 return []result{{*step, lines}} |
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52 } |
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53 |
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54 results := make(chan result) |
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55 done := make(chan struct{}) |
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56 |
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57 var all []result |
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58 go func() { |
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59 for { |
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60 select { |
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61 case r := <-results: |
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62 all = append(all, r) |
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63 case <-done: |
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64 return |
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65 } |
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66 } |
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67 }() |
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68 |
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69 var wg sync.WaitGroup |
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70 jobs := make(chan float64) |
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71 for i, n := 0, runtime.NumCPU(); i < n; i++ { |
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72 wg.Add(1) |
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73 go processLevels(tree, jobs, results, &wg) |
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74 } |
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75 for h := tree.Min.Z; h <= tree.Max.Z; h += *step { |
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76 jobs <- h |
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77 } |
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78 close(jobs) |
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79 wg.Wait() |
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80 done <- struct{}{} |
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81 |
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82 sort.Slice(all, func(i, j int) bool { |
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83 return all[i].h < all[j].h |
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84 }) |
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85 |
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86 return all |
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87 } |
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88 |
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89 func main() { |
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90 flag.Parse() |
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91 |
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92 if *bottleneck == "" || *date == "" { |
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93 log.Fatalln("missing bottleneck or date option.") |
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94 } |
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95 |
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96 dateInfo, err := time.Parse("2006-01-02", *date) |
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97 if err != nil { |
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98 log.Fatalf("error: %v\n", err) |
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99 } |
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100 |
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101 for _, fname := range flag.Args() { |
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102 log.Printf("processing %s\n", fname) |
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103 start := time.Now() |
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104 tree, err := octree.LoadTree(fname) |
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105 if err != nil { |
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106 log.Printf("error: %v\n", err) |
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107 continue |
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108 } |
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109 log.Printf("loading took: %v\n", time.Since(start)) |
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110 start = time.Now() |
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111 all := process(tree) |
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112 log.Printf("processing took: %v\n", time.Since(start)) |
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113 start = time.Now() |
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114 if err = store(all, tree.EPSG, *bottleneck, dateInfo); err != nil { |
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parents:
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115 log.Printf("error: %v\n", err) |
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parents:
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116 } |
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117 log.Printf("storing took: %v\n", time.Since(start)) |
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parents:
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118 } |
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parents:
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119 } |