make min_distance argument to intersect_node() optional.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesh.h b/src/mesh.h
index 0622144..0afe1c9 100644
--- a/src/mesh.h
+++ b/src/mesh.h
@@ -12,7 +12,7 @@
    less than `min_distance`, return true, else return false. */
 __device__ bool
 intersect_node(const float3 &origin, const float3 &direction,
-	       Geometry *geometry, const int &i, const float &min_distance)
+	       Geometry *geometry, const int &i, float min_distance=-1.0f)
 {
     /* assigning these to local variables is faster for some reason */
     float3 lower_bound = geometry->lower_bounds[i];