slidergrid

commit 6fba7f184af58122623eadbe40e902759fef2a25
parent 24351f33993e14a88dd9cfb9787752bd4c912af2
Author: Anders Damsgaard <anders.damsgaard@geo.au.dk>
Date:   Wed, 16 Mar 2016 13:42:51 -0700

add file for centralized debug flags

Diffstat:
A
debug.h
 | 
8
++++++++
M
grid.c
 | 
12
+++++++++++-

2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/debug.h b/debug.h
@@ -0,0 +1,8 @@
+#ifndef DEBUG_H_
+#define DEBUG_H_
+
+// if defined, verbose information to stdout will be shown during the 
+// slider-bond initialization function
+#define DEBUG_FIND_AND_BOND_TO_NEIGHBORS
+
+#endif
diff --git a/grid.c b/grid.c
@@ -3,6 +3,7 @@
 #include "typedefs.h"
 #include "slider.h"
 #include "vector_math.h"
+#include "debug.h"
 
 slider* create_regular_slider_grid(
         const int nx,
@@ -49,11 +50,20 @@ void find_and_bond_to_neighbors_n2(
                 dist = subtract_float3(sliders[i].pos, sliders[j].pos);
                 dist_norm = norm_float3(dist);
 
+#ifdef DEBUG_FIND_AND_BOND_TO_NEIGHBORS
+                printf("i=%d, j=%d, dist = %f %f %f, dist_norm = %f, "
+                        "cutoff = %f\n",
+                        i, j,
+                        dist.x, dist.y, dist.z,
+                        dist_norm, cutoff);
+#endif
+
                 if (dist_norm < cutoff) {
                     sliders[i].neighbors[n_neighbors++] = j;
 
                     if (n_neighbors == MAX_NEIGHBORS - 1)
-                        fprintf(stderr, "Error: MAX_NEIGHBORS exceeded.\n");
+                        fprintf(stderr, "Error: MAX_NEIGHBORS exceeded for "
+                                "slider %d.\n", i);
                 }
             }
         }