| 17 | } |
| 18 | |
| 19 | Sphere from_cone(const Vector3 &tip, const Vector3 &dir, f32 range, f32 angle) |
| 20 | { |
| 21 | const f32 sin_a = fsin(angle); |
| 22 | const f32 cos_a = fcos(angle); |
| 23 | const f32 slant = range / cos_a; |
| 24 | const f32 sotca = slant / (2.0f * cos_a); |
| 25 | Sphere s; |
| 26 | |
| 27 | if (angle > PI_FOURTH) { |
| 28 | s.c = tip + dir * range; |
| 29 | s.r = sin_a * slant; |
| 30 | } else { |
| 31 | s.c = tip + dir * sotca; |
| 32 | s.r = sotca; |
| 33 | } |
| 34 | |
| 35 | return s; |
| 36 | } |
| 37 | |
| 38 | Sphere merge(const Sphere &a, const Sphere &b) |
| 39 | { |