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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #ifndef SkRTree_DEFINED | 9 #ifndef SkRTree_DEFINED |
10 #define SkRTree_DEFINED | 10 #define SkRTree_DEFINED |
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34 SK_DECLARE_INST_COUNT(SkRTree) | 34 SK_DECLARE_INST_COUNT(SkRTree) |
35 | 35 |
36 /** | 36 /** |
37 * If you have some prior information about the distribution of bounds you'r
e expecting, you | 37 * If you have some prior information about the distribution of bounds you'r
e expecting, you |
38 * can provide an optional aspect ratio parameter. This allows the bulk-load
algorithm to | 38 * can provide an optional aspect ratio parameter. This allows the bulk-load
algorithm to |
39 * create better proportioned tiles of rectangles. | 39 * create better proportioned tiles of rectangles. |
40 */ | 40 */ |
41 explicit SkRTree(SkScalar aspectRatio = 1); | 41 explicit SkRTree(SkScalar aspectRatio = 1); |
42 virtual ~SkRTree() {} | 42 virtual ~SkRTree() {} |
43 | 43 |
44 void insert(const SkRect[], int N) SK_OVERRIDE; | 44 void insert(const SkRect[], int N) override; |
45 void search(const SkRect& query, SkTDArray<unsigned>* results) const SK_OVER
RIDE; | 45 void search(const SkRect& query, SkTDArray<unsigned>* results) const overrid
e; |
46 size_t bytesUsed() const SK_OVERRIDE; | 46 size_t bytesUsed() const override; |
47 | 47 |
48 // Methods and constants below here are only public for tests. | 48 // Methods and constants below here are only public for tests. |
49 | 49 |
50 // Return the depth of the tree structure. | 50 // Return the depth of the tree structure. |
51 int getDepth() const { return fCount ? fRoot.fSubtree->fLevel + 1 : 0; } | 51 int getDepth() const { return fCount ? fRoot.fSubtree->fLevel + 1 : 0; } |
52 // Insertion count (not overall node count, which may be greater). | 52 // Insertion count (not overall node count, which may be greater). |
53 int getCount() const { return fCount; } | 53 int getCount() const { return fCount; } |
54 | 54 |
55 // Get the root bound. | 55 // Get the root bound. |
56 SkRect getRootBound() const SK_OVERRIDE; | 56 SkRect getRootBound() const override; |
57 | 57 |
58 // These values were empirically determined to produce reasonable performanc
e in most cases. | 58 // These values were empirically determined to produce reasonable performanc
e in most cases. |
59 static const int kMinChildren = 6, | 59 static const int kMinChildren = 6, |
60 kMaxChildren = 11; | 60 kMaxChildren = 11; |
61 | 61 |
62 private: | 62 private: |
63 struct Node; | 63 struct Node; |
64 | 64 |
65 struct Branch { | 65 struct Branch { |
66 union { | 66 union { |
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89 // This is the count of data elements (rather than total nodes in the tree) | 89 // This is the count of data elements (rather than total nodes in the tree) |
90 int fCount; | 90 int fCount; |
91 SkScalar fAspectRatio; | 91 SkScalar fAspectRatio; |
92 Branch fRoot; | 92 Branch fRoot; |
93 SkTDArray<Node> fNodes; | 93 SkTDArray<Node> fNodes; |
94 | 94 |
95 typedef SkBBoxHierarchy INHERITED; | 95 typedef SkBBoxHierarchy INHERITED; |
96 }; | 96 }; |
97 | 97 |
98 #endif | 98 #endif |
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