TerrainGen coverage

terraingen/
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layers/craters/crater.cpp
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1 #include "terraingen/layers/craters/crater.h"
2
3 #include "terraingen/random/philox.h"
4 #include "terraingen/random/stream.h"
5 #include "terraingen/util/checks.h"
6
7 #include <bit>
8 #include <cmath>
9 #include <stdexcept>
10 #include <string>
11
12 namespace terraingen {
13
14 81504 std::uint64_t ManualCraterId(double x, double y, double diameter) {
15 81504 const IdWords xBits = SplitId(std::bit_cast<std::uint64_t>(x));
16 81504 const IdWords yBits = SplitId(std::bit_cast<std::uint64_t>(y));
17 81504 const IdWords dBits = SplitId(std::bit_cast<std::uint64_t>(diameter));
18 const U32x4 block =
19 81504 Philox4x32({xBits.low, xBits.high, yBits.low, yBits.high}, {dBits.low, dBits.high});
20 81504 return (static_cast<std::uint64_t>(block.x) << 32) | block.y;
21 }
22
23 399053 void AppendManualCraters(const CraterList& manual, CraterList& craters,
24 const std::function<bool(const Crater&)>& keep) {
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 484949 for (std::size_t n = 0; n < manual.Size(); ++n) {
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 85902 Crater crater = manual.At(n);
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 171800 if (!(std::isfinite(crater.x) && std::isfinite(crater.y) && IsPositive(crater.diameter) &&
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 85898 IsNonNegative(crater.ageGyr))) {
29 throw std::invalid_argument("Manual craters need finite positions, positive diameters "
30
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 6 "and non-negative ages");
31 }
32 85896 crater.manual = true;
33
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 85896 if (crater.id == 0) {
34 81492 crater.id = ManualCraterId(crater.x, crater.y, crater.diameter);
35 }
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 85896 if (!keep || keep(crater)) {
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 34385 craters.Append(crater);
38 }
39 }
40 399047 }
41
42 582308 void CraterList::Reserve(std::size_t count) {
43 582308 x_.reserve(count);
44 582308 y_.reserve(count);
45 582308 diameter_.reserve(count);
46 582308 ageGyr_.reserve(count);
47 582308 id_.reserve(count);
48 582308 manual_.reserve(count);
49 582308 }
50
51 19390763 void CraterList::Append(const Crater& crater) {
52 19390763 x_.push_back(crater.x);
53 19390763 y_.push_back(crater.y);
54 19390763 diameter_.push_back(crater.diameter);
55 19390763 ageGyr_.push_back(crater.ageGyr);
56 19390763 id_.push_back(crater.id);
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 19390763 manual_.push_back(crater.manual ? 1 : 0);
58 19390763 }
59
60 141 void CraterList::Append(const CraterList& other) {
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 141 x_.insert(x_.end(), other.x_.begin(), other.x_.end());
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 141 y_.insert(y_.end(), other.y_.begin(), other.y_.end());
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 141 diameter_.insert(diameter_.end(), other.diameter_.begin(), other.diameter_.end());
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 141 ageGyr_.insert(ageGyr_.end(), other.ageGyr_.begin(), other.ageGyr_.end());
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 141 id_.insert(id_.end(), other.id_.begin(), other.id_.end());
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 141 manual_.insert(manual_.end(), other.manual_.begin(), other.manual_.end());
67 141 }
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69 133028821 Crater CraterList::At(std::size_t index) const {
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 133028821 if (index >= Size()) {
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 1 throw std::out_of_range("Crater index out of range");
72 }
73 133028820 return {x_[index], y_[index], diameter_[index],
74 133028820 ageGyr_[index], id_[index], manual_[index] != 0};
75 }
76
77 1389096 bool CraterSelection::Includes(const Crater& crater) const {
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 2778172 return !((crater.manual && !manual) || crater.diameter < minDiameter ||
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 1389076 crater.diameter > maxDiameter || crater.ageGyr < minAgeGyr ||
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 2766641 crater.ageGyr > maxAgeGyr);
81 }
82
83 247219 void ValidateCraterSelection(const CraterSelection& selection, std::string_view what) {
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 247219 if (!(selection.minDiameter >= 0.0 && selection.maxDiameter >= selection.minDiameter &&
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 247214 selection.minAgeGyr >= 0.0 && selection.maxAgeGyr >= selection.minAgeGyr)) {
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 22 throw std::invalid_argument(std::string(what) +
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 33 " size and age ranges must satisfy 0 <= min <= max");
88 }
89 247208 }
90
91 } // namespace terraingen
92