make min_distance argument to intersect_node() optional.

2 files changed, 3 insertions, 3 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];
diff --git a/src/render.cu b/src/render.cu
index e5b4ac5..c1e8ea1 100644
--- a/src/render.cu
+++ b/src/render.cu
@@ -51,7 +51,7 @@ render(int nthreads, float3 *_origin, float3 *_direction, Geometry *geometry,
     float distance;
 
     if (n < 1 && !intersect_node(origin, direction, geometry,
-				 geometry->start_node, -1.0f)) {
+				 geometry->start_node)) {
 	pixels[id] = 0;
 	return;
     }
@@ -80,7 +80,7 @@ render(int nthreads, float3 *_origin, float3 *_direction, Geometry *geometry,
 		
 	if (*node >= geometry->first_node) {
 	    for (i=first_child; i < stop; i++) {
-		if (intersect_node(origin, direction, geometry, i, -1.0f)) {
+		if (intersect_node(origin, direction, geometry, i)) {
 		    *node = i;
 		    node++;
 		}