diff options
| -rw-r--r-- | libdimension/prtree.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libdimension/prtree.c b/libdimension/prtree.c index 15bc997..04e7de9 100644 --- a/libdimension/prtree.c +++ b/libdimension/prtree.c @@ -529,7 +529,7 @@ dmnsn_ray_box_intersection(dmnsn_line line, dmnsn_bounding_box box, double t) { double tmin = -INFINITY, tmax = INFINITY; - if (line.n.x != 0.0) { + if (line.n.x != 0.0 && box.min.x < box.max.x) { double tx1 = (box.min.x - line.x0.x)/line.n.x; double tx2 = (box.max.x - line.x0.x)/line.n.x; @@ -543,7 +543,7 @@ dmnsn_ray_box_intersection(dmnsn_line line, dmnsn_bounding_box box, double t) return false; } - if (line.n.y != 0.0) { + if (line.n.y != 0.0 && box.min.y < box.max.y) { double ty1 = (box.min.y - line.x0.y)/line.n.y; double ty2 = (box.max.y - line.x0.y)/line.n.y; @@ -557,7 +557,7 @@ dmnsn_ray_box_intersection(dmnsn_line line, dmnsn_bounding_box box, double t) return false; } - if (line.n.z != 0.0) { + if (line.n.z != 0.0 && box.min.z < box.max.z) { double tz1 = (box.min.z - line.x0.z)/line.n.z; double tz2 = (box.max.z - line.x0.z)/line.n.z; |