1RTCHit(3)                Embree Ray Tracing Kernels 3                RTCHit(3)
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5   NAME
6              RTCHit - single hit structure
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8   SYNOPSIS
9              #include <embree3/rtcore.h>
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11              struct RTCHit
12              {
13                float Ng_x;                                        // x coordinate of geometry normal
14                float Ng_y;                                        // y coordinate of geometry normal
15                float Ng_z;                                        // z coordinate of geometry normal
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17                float u;                                           // barycentric u coordinate of hit
18                float v;                                           // barycentric v coordinate of hit
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20                unsigned int primID;                               // geometry ID
21                unsigned int geomID;                               // primitive ID
22                unsigned int instID[RTC_MAX_INSTANCE_LEVEL_COUNT]; // instance ID
23              };
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25   DESCRIPTION
26       The  RTCHit  type  defines the type of a ray/primitive intersection re‐
27       sult.  The hit contains the unnormalized  geometric  normal  in  object
28       space  at  the hit location (Ng_x, Ng_y, Ng_z members), the barycentric
29       u/v coordinates of the hit (u and v members), as well as the  primitive
30       ID  (primID member), geometry ID (geomID member), and instance ID stack
31       (instID member) of the hit.  The parametric  intersection  distance  is
32       not  stored  inside  the  hit, but stored inside the tfar member of the
33       ray.
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35       The embree3/rtcore_ray.h  header  additionally  defines  the  same  hit
36       structure  in structure of array (SOA) layout for hit packets of size 4
37       (RTCHit4 type), size 8 (RTCHit8 type), and  size  16  (RTCHit16  type).
38       The header additionally defines an RTCHitNt template for hit packets of
39       an arbitrary compile-time size.
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41   EXIT STATUS
42   SEE ALSO
43       [RTCRay], [Multi-Level Instancing]
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47                                                                     RTCHit(3)