comparison: src/ldrawalgorithm.h
src/ldrawalgorithm.h
- changeset 232
- 8efa3a33172e
- parent 206
- 654661eab7f3
- child 250
- 2837b549e616
equal
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inserted
replaced
| 231:a9bf6bab5ea2 | 232:8efa3a33172e |
|---|---|
| 17 | 17 |
| 18 /* | 18 /* |
| 19 void makeUnofficial(ModelEditor &editor); | 19 void makeUnofficial(ModelEditor &editor); |
| 20 */ | 20 */ |
| 21 | 21 |
| 22 constexpr float circleAngle(int divisions, int i) | |
| 23 { | |
| 24 constexpr float ofs = 0.5 * pi<>; | |
| 25 float factor = -2.0f * pi<> / divisions; | |
| 26 return i * factor + ofs; | |
| 27 } | |
| 28 | |
| 29 constexpr glm::vec2 rimpoint(int divisions, int i) | |
| 30 { | |
| 31 const float angle = circleAngle(divisions, i); | |
| 32 return glm::vec2{std::sin(angle), std::cos(angle)}; | |
| 33 } | |
| 34 | |
| 35 template<typename Fn> | |
| 36 void circleAngles(int segments, int divisions, Fn&& fn) | |
| 37 { | |
| 38 for (int i = 0; i < segments; i += 1) | |
| 39 { | |
| 40 const float a1 = circleAngle(divisions, i - 1); | |
| 41 const float a2 = circleAngle(divisions, i); | |
| 42 const float a3 = circleAngle(divisions, i + 1); | |
| 43 fn(a1, a2, a3); | |
| 44 } | |
| 45 } | |
| 46 | |
| 22 template<typename Fn> | 47 template<typename Fn> |
| 23 void circle(int segments, int divisions, Fn&& fn) | 48 void circle(int segments, int divisions, Fn&& fn) |
| 24 { | 49 { |
| 25 float factor = 2.0f * pi<> / divisions; | 50 circleAngles(segments, divisions, [&fn]( |
| 26 for (int i = 0; i < segments; i += 1) | 51 const float a1, |
| 27 { | 52 const float a2, |
| 53 const float a3 | |
| 54 ){ | |
| 28 fn( | 55 fn( |
| 29 glm::vec2{std::sin((i - 1) * factor), std::cos((i - 1) * factor)}, | 56 glm::vec2{std::sin(a1), std::cos(a1)}, |
| 30 glm::vec2{std::sin(i * factor), std::cos(i * factor)}, | 57 glm::vec2{std::sin(a2), std::cos(a2)}, |
| 31 glm::vec2{std::sin((i + 1) * factor), std::cos((i - 1) * factor)} | 58 glm::vec2{std::sin(a3), std::cos(a3)} |
| 32 ); | 59 ); |
| 33 } | 60 }); |
| 34 } | 61 } |
| 35 } | 62 } |
| 36 | 63 |
| 37 ModelElement inverted(const ModelElement &element); | 64 ModelElement inverted(const ModelElement &element); |
