polyadvent

A game engine from scratch in C
git clone git://jb55.com/polyadvent
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half-edge.c (401B)

      1 
      2 
      3 #include "half-edge.h"
      4 
      5 // NOTE: end = start(next(e))
      6 
      7 inline u32 he_start(struct half_edge *he)
      8 {
      9     return he->start;
     10 }
     11 
     12 inline struct half_edge *he_next(struct half_edge *edges, struct half_edge *he)
     13 {
     14     return &edges[he->next];
     15 }
     16 
     17 inline u32 he_end(struct half_edge *edges, struct half_edge *he)
     18 {
     19     return he_start(he_next(edges, he));
     20 }
     21 
     22 inline u32 he_prev_vert(struct half_edge *he)
     23 {
     24 }