Mercurial > gemma
annotate cmd/octree2contour/loader.go @ 675:1cb565d244cf octree
octree: Allocate 8 child nodes per node not 4.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
---|---|
date | Wed, 19 Sep 2018 15:37:37 +0200 |
parents | 120a82bd9953 |
children | 7bb961d750b6 |
rev | line source |
---|---|
674
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
1 package main |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
2 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
3 import ( |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
4 "bufio" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
5 "encoding/binary" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
6 "io" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
7 "log" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
8 "math" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
9 "os" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
10 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
11 "github.com/golang/snappy" |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
12 ) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
13 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
14 type octree struct { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
15 epsg uint32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
16 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
17 vertices []vertex |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
18 triangles [][]int32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
19 index []int32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
20 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
21 min vertex |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
22 max vertex |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
23 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
24 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
25 func (v *vertex) read(r io.Reader) error { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
26 var buf [8]byte |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
27 b := buf[:] |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
28 if _, err := io.ReadFull(r, b); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
29 return nil |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
30 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
31 v.x = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
32 if _, err := io.ReadFull(r, b); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
33 return nil |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
35 v.y = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
36 if _, err := io.ReadFull(r, b); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
37 return nil |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
38 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
39 v.z = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
40 return nil |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
41 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
42 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
43 type byteReader interface { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
44 io.ByteReader |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
45 io.Reader |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
46 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
47 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
48 func loadOctreeReader(r byteReader) (*octree, error) { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
49 tree := new(octree) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
50 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
51 if err := binary.Read(r, binary.LittleEndian, &tree.epsg); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
52 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
53 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
54 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
55 if err := tree.min.read(r); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
56 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
57 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
58 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
59 if err := tree.max.read(r); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
60 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
61 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
62 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
63 var numVertices uint32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
64 if err := binary.Read(r, binary.LittleEndian, &numVertices); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
65 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
66 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
67 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
68 log.Printf("vertices: %d\n", numVertices) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
69 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
70 vertices := make([]vertex, numVertices) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
71 tree.vertices = vertices |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
72 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
73 for i := range vertices { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
74 if err := vertices[i].read(r); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
75 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
76 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
77 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
78 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
79 var numTriangles uint32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
80 if err := binary.Read(r, binary.LittleEndian, &numTriangles); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
81 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
82 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
83 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
84 log.Printf("triangles: %d\n", numTriangles) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
85 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
86 indices := make([]int32, 3*numTriangles) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
87 triangles := make([][]int32, numTriangles) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
88 tree.triangles = triangles |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
89 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
90 var last int32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
91 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
92 for i := range triangles { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
93 tri := indices[:3] |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
94 indices = indices[3:] |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
95 triangles[i] = tri |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
96 for j := range tri { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
97 v, err := binary.ReadVarint(r) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
98 if err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
99 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
100 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
101 value := int32(v) + last |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
102 tri[j] = value |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
103 last = value |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
104 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
105 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
106 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
107 var numNodes uint32 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
108 if err := binary.Read(r, binary.LittleEndian, &numNodes); err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
109 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
110 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
111 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
112 log.Printf("num nodes: %d\n", numNodes) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
113 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
114 tree.index = make([]int32, numNodes) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
115 entries := tree.index[1:] |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
116 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
117 last = 0 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
118 for i := range entries { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
119 v, err := binary.ReadVarint(r) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
120 if err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
121 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
122 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
123 value := int32(v) + last |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
124 entries[i] = value |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
125 last = value |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
126 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
127 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
128 return tree, nil |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
129 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
130 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
131 func loadOctree(fname string) (*octree, error) { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
132 |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
133 f, err := os.Open(fname) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
134 if err != nil { |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
135 return nil, err |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
136 } |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
137 defer f.Close() |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
138 return loadOctreeReader(bufio.NewReader(snappy.NewReader(f))) |
120a82bd9953
octree: Added loading frame for contour generation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
139 } |