Fixed problems where BSDF evaluates to 0.

NREL · Feb 20, 2014 · 386ac65 · 386ac65
1 parent c9b9738
commit 386ac65
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Showing 2 changed files with 7 additions and 7 deletions.
diff --git a/src/cv/bsdf2rad.c b/src/cv/bsdf2rad.c
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: bsdf2rad.c,v 2.6 2014/02/17 21:56:22 greg Exp $";
+static const char RCSid[] = "$Id: bsdf2rad.c,v 2.7 2014/02/20 09:21:32 greg Exp $";
 #endif
 /*
  *  Plot 3-D BSDF output based on scattering interpolant or XML representation
@@ -131,7 +131,7 @@ main(int argc, char *argv[])
 			for (i = 0; i < rbf->nrbf; i++) {
 				ovec_from_pos(odir, rbf->rbfa[i].gx, rbf->rbfa[i].gy);
 				bsdf = eval_rbfrep(rbf, odir) / (output_orient*odir[2]);
-				bsdf = log(bsdf) - min_log;
+				bsdf = log(bsdf + 1e-5) - min_log;
 				printf("pmat sphere p%d\n0\n0\n4 %f %f %f %f\n",
 					i+1, odir[0]*bsdf, odir[1]*bsdf, odir[2]*bsdf,
 						.007*bsdf);
@@ -156,7 +156,7 @@ main(int argc, char *argv[])
 			} else
 				bsdf = eval_rbfrep(rbf, odir) /
 						(output_orient*odir[2]);
-			bsdf = log(bsdf) - min_log;
+			bsdf = log(bsdf + 1e-5) - min_log;
 			fprintf(fp, "%.8e %.8e %.8e\n",
 					odir[0]*bsdf, odir[1]*bsdf, odir[2]*bsdf);
 		    }

diff --git a/src/cv/pabopto2bsdf.c b/src/cv/pabopto2bsdf.c
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: pabopto2bsdf.c,v 2.13 2014/02/17 21:56:22 greg Exp $";
+static const char RCSid[] = "$Id: pabopto2bsdf.c,v 2.14 2014/02/20 09:21:32 greg Exp $";
 #endif
 /*
  * Load measured BSDF data in PAB-Opto format.
@@ -231,7 +231,7 @@ main(int argc, char *argv[])
 				(dsf_grid[i][j].nval*output_orient*dir[2]);
 			if (bsdf <= bsdf_min*.6)
 				continue;
-			bsdf = log(bsdf) - min_log;
+			bsdf = log(bsdf + 1e-5) - min_log;
 			ovec_from_pos(dir, i, j);
 			printf("yellow sphere s%04d\n0\n0\n", ++n);
 			printf("4 %.6g %.6g %.6g %.6g\n\n",
@@ -245,7 +245,7 @@ main(int argc, char *argv[])
 		RBFVAL	*rbf = &dsf_list->rbfa[n];
 		ovec_from_pos(dir, rbf->gx, rbf->gy);
 		bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]);
-		bsdf = log(bsdf) - min_log;
+		bsdf = log(bsdf + 1e-5) - min_log;
 		printf("red sphere p%04d\n0\n0\n", ++n);
 		printf("4 %.6g %.6g %.6g %.6g\n\n",
 				dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf,
@@ -265,7 +265,7 @@ main(int argc, char *argv[])
 	    for (j = 0; j < GRIDRES; j++) {
 		ovec_from_pos(dir, i, j);
 		bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]);
-		bsdf = log(bsdf) - min_log;
+		bsdf = log(bsdf + 1e-5) - min_log;
 		fprintf(pfp, "%.8e %.8e %.8e\n",
 				dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf);
 	    }