diff options
| -rw-r--r-- | libdimension/prtree.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/libdimension/prtree.c b/libdimension/prtree.c index 69fac24..4df8c63 100644 --- a/libdimension/prtree.c +++ b/libdimension/prtree.c @@ -627,8 +627,8 @@ dmnsn_delete_prtree(dmnsn_prtree *tree) /** A line with pre-calculated reciprocals to avoid divisions. */ typedef struct dmnsn_optimized_line { - dmnsn_line line; - dmnsn_vector n_inv; + dmnsn_vector x0; /**< The origin of the line. */ + dmnsn_vector n_inv; /**< The inverse of each component of the line's slope .*/ } dmnsn_optimized_line; /** Precompute inverses for faster ray-box intersection tests. */ @@ -636,7 +636,7 @@ static inline dmnsn_optimized_line dmnsn_optimize_line(dmnsn_line line) { dmnsn_optimized_line optline = { - .line = line, + .x0 = line.x0, .n_inv = dmnsn_new_vector(1.0/line.n.x, 1.0/line.n.y, 1.0/line.n.z) }; return optline; @@ -656,20 +656,20 @@ dmnsn_ray_box_intersection(dmnsn_optimized_line optline, * unchanged. */ - double tx1 = (box.min.x - optline.line.x0.x)*optline.n_inv.x; - double tx2 = (box.max.x - optline.line.x0.x)*optline.n_inv.x; + double tx1 = (box.min.x - optline.x0.x)*optline.n_inv.x; + double tx2 = (box.max.x - optline.x0.x)*optline.n_inv.x; double tmin = dmnsn_min(tx1, tx2); double tmax = dmnsn_max(tx1, tx2); - double ty1 = (box.min.y - optline.line.x0.y)*optline.n_inv.y; - double ty2 = (box.max.y - optline.line.x0.y)*optline.n_inv.y; + double ty1 = (box.min.y - optline.x0.y)*optline.n_inv.y; + double ty2 = (box.max.y - optline.x0.y)*optline.n_inv.y; tmin = dmnsn_max(tmin, dmnsn_min(ty1, ty2)); tmax = dmnsn_min(tmax, dmnsn_max(ty1, ty2)); - double tz1 = (box.min.z - optline.line.x0.z)*optline.n_inv.z; - double tz2 = (box.max.z - optline.line.x0.z)*optline.n_inv.z; + double tz1 = (box.min.z - optline.x0.z)*optline.n_inv.z; + double tz2 = (box.max.z - optline.x0.z)*optline.n_inv.z; tmin = dmnsn_max(tmin, dmnsn_min(tz1, tz2)); tmax = dmnsn_min(tmax, dmnsn_max(tz1, tz2)); |