| 36 | boost::none_t const null = boost::none; |
| 37 | |
| 38 | class Node { |
| 39 | private: |
| 40 | typedef enum { |
| 41 | OP_ADD, OP_SUBTRACT, OP_INTERSECT, OP_TERMINAL |
| 42 | } Op; |
| 43 | typedef enum { |
| 44 | PRIM_BOX, PRIM_CONE, PRIM_CYLINDER, PRIM_PYRAMID, PRIM_SPHERE |
| 45 | } Prim; |
| 46 | |
| 47 | double x,y,z, zx,zy,zz, xx,xy,xz, a,b,c; |
| 48 | const Node *left, *right; |
| 49 | |
| 50 | Op op; |
| 51 | Prim prim; |
| 52 | |
| 53 | Node& operate(Op op, const Node& p) { |
| 54 | left = new Node(*this); |
| 55 | right = new Node(p); |
| 56 | this->op = op; |
| 57 | return *this; |
| 58 | } |
| 59 | |
| 60 | Node(Prim p, double la, double lb=0., double lc=0.) |
| 61 | : prim(p), op(OP_TERMINAL), |
| 62 | x(0.), y(0.), z(0.), |
| 63 | zx(0.), zy(0.), zz(1.), |
| 64 | xx(1.), xy(0.), xz(0.), |
| 65 | a(la), b(lb), c(lc) {} |
| 66 | public: |
| 67 | static Node Sphere(double r) { |
| 68 | return Node(PRIM_SPHERE, r); |
| 69 | } |
| 70 | static Node Box(double dx, double dy, double dz) { |
| 71 | return Node(PRIM_BOX, dx, dy, dz); |
| 72 | } |
| 73 | static Node Pyramid(double dx, double dy, double dz) { |
| 74 | return Node(PRIM_PYRAMID, dx, dy, dz); |
| 75 | } |
| 76 | static Node Cylinder(double r, double h) { |
| 77 | return Node(PRIM_CYLINDER, r, h); |
| 78 | } |
| 79 | static Node Cone(double r, double h) { |
| 80 | return Node(PRIM_CONE, r, h); |
| 81 | } |
| 82 | |
| 83 | Node& move( |
| 84 | double px = 0., double py = 0., double pz = 0., |
| 85 | double zx = 0., double zy = 0., double zz = 1., |
| 86 | double xx = 1., double xy = 0., double xz = 0.) |
| 87 | { |
| 88 | this->x = px; this->y = py; this->z = pz; |
| 89 | this->zx = zx; this->zy = zy; this->zz = zz; |
| 90 | this->xx = xx; this->xy = xy; this->xz = xz; |
| 91 | return *this; |
| 92 | } |
| 93 | |
| 94 | Node& add(const Node& p) { |
| 95 | return operate(OP_ADD, p); |