comparison: src/geometry.cpp
src/geometry.cpp
- changeset 250
- 2837b549e616
- parent 223
- ce81db996275
- child 264
- 76a025db4948
equal
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replaced
| 249:37d3c819cafa | 250:2837b549e616 |
|---|---|
| 215 }); | 215 }); |
| 216 } | 216 } |
| 217 | 217 |
| 218 bool isConvex(const std::vector<glm::vec3>& polygon) | 218 bool isConvex(const std::vector<glm::vec3>& polygon) |
| 219 { | 219 { |
| 220 const int n = polygon.size(); | 220 const std::size_t n = polygon.size(); |
| 221 auto polygonRing = iter::ring(polygon, n); | 221 auto polygonRing = iter::ring(polygon, n); |
| 222 std::vector<glm::vec3> crosses; | 222 std::vector<glm::vec3> crosses; |
| 223 crosses.resize(n); | 223 crosses.resize(n); |
| 224 for (int i = 0; i < n; i += 1) | 224 for (std::size_t i = 0; i < n; i += 1) |
| 225 { | 225 { |
| 226 crosses[i] = glm::cross(polygonRing[i - 1] - polygonRing[i], polygonRing[i + 1] - polygonRing[i]); | 226 crosses[i] = glm::cross(polygonRing[i - 1] - polygonRing[i], polygonRing[i + 1] - polygonRing[i]); |
| 227 } | 227 } |
| 228 return not std::any_of( | 228 return not std::any_of( |
| 229 crosses.begin() + 1, | 229 crosses.begin() + 1, |
