blob: a3e2e5b228bc43f70511eaea346f7382a36a9056 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
// Copyright 2005 Google Inc. All Rights Reserved.
#include "s2regionunion.h"
#include "s2cap.h"
#include "s2cell.h"
#include "s2latlngrect.h"
S2RegionUnion::S2RegionUnion() { }
S2RegionUnion::S2RegionUnion(vector<S2Region*>* regions) {
Init(regions);
}
S2RegionUnion::~S2RegionUnion() {
/*
for (size_t i = 0; i < regions_.size(); ++i) {
delete regions_[i];
}
regions_.clear();
*/
}
void S2RegionUnion::Init(vector<S2Region*>* regions) {
DCHECK(regions_.empty());
// We copy the vector rather than calling swap() to optimize storage.
regions_ = *regions;
regions->clear();
}
S2RegionUnion::S2RegionUnion(S2RegionUnion const* src)
: regions_(src->num_regions()) {
for (int i = 0; i < num_regions(); ++i) {
regions_[i] = src->region(i)->Clone();
}
}
void S2RegionUnion::Release(vector<S2Region*>* regions) {
if (regions != NULL) {
regions->insert(regions->end(), regions_.begin(), regions_.end());
}
regions_.clear();
}
void S2RegionUnion::Add(S2Region* region) {
regions_.push_back(region);
}
S2RegionUnion* S2RegionUnion::Clone() const {
return new S2RegionUnion(this);
}
S2Cap S2RegionUnion::GetCapBound() const {
// TODO: This could be optimized to return a tighter bound, but doesn't
// seem worth it unless profiling shows otherwise.
return GetRectBound().GetCapBound();
}
S2LatLngRect S2RegionUnion::GetRectBound() const {
S2LatLngRect result = S2LatLngRect::Empty();
for (int i = 0; i < num_regions(); ++i) {
result = result.Union(region(i)->GetRectBound());
}
return result;
}
bool S2RegionUnion::VirtualContainsPoint(S2Point const& p) const {
return Contains(p); // The same as Contains(), just virtual.
}
bool S2RegionUnion::Contains(S2Cell const& cell) const {
// Note that this method is allowed to return false even if the cell
// is contained by the region.
for (int i = 0; i < num_regions(); ++i) {
if (region(i)->Contains(cell)) return true;
}
return false;
}
bool S2RegionUnion::Contains(S2Point const& p) const {
for (int i = 0; i < num_regions(); ++i) {
if (region(i)->VirtualContainsPoint(p)) return true;
}
return false;
}
bool S2RegionUnion::MayIntersect(S2Cell const& cell) const {
for (int i = 0; i < num_regions(); ++i) {
if (region(i)->MayIntersect(cell)) return true;
}
return false;
}
|