X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=src%2Froam.c;h=d8bff628b33f939151e1def1c2c1f069a76b17d9;hb=5d4daa2b86d30c77c9828447ca1828a45713b5d6;hp=0f4995e0b56593d7bf3dc03f4d65015afb847e8e;hpb=22408daaad6f0c7b4075c2b0a725802b0659cfbe;p=grits

diff --git a/src/roam.c b/src/roam.c
index 0f4995e..d8bff62 100644
--- a/src/roam.c
+++ b/src/roam.c
@@ -21,8 +21,8 @@
  *
  * A spherical version of the Realtime Optimally-Adapting Meshes (ROAM)
  * algorithm is use for drawing the surface of the planet. ROAM provide a
- * continuous level-of-detail mesh of the planet which is used by #GisOpenGL
- * when drawing surface textures for GisTiles.
+ * continuous level-of-detail mesh of the planet which is used by #GritsOpenGL
+ * when drawing surface textures for GritsTiles.
  *
  * This implementation of the ROAM algorithm is based on an octahedron as the
  * base model.
@@ -35,7 +35,7 @@
 #include <GL/glu.h>
 
 #include "gpqueue.h"
-#include "gis-util.h"
+#include "grits-util.h"
 #include "roam.h"
 
 /*
@@ -206,27 +206,10 @@ RoamTriangle *roam_triangle_new(RoamPoint *l, RoamPoint *m, RoamPoint *r,
 	//		triangle->split->lat, l->lat);
 
 	/* Update normal */
-	double pa[3];
-	double pb[3];
-	pa[0] = triangle->p.l->x - triangle->p.m->x;
-	pa[1] = triangle->p.l->y - triangle->p.m->y;
-	pa[2] = triangle->p.l->z - triangle->p.m->z;
-
-	pb[0] = triangle->p.r->x - triangle->p.m->x;
-	pb[1] = triangle->p.r->y - triangle->p.m->y;
-	pb[2] = triangle->p.r->z - triangle->p.m->z;
-
-	triangle->norm[0] = pa[1] * pb[2] - pa[2] * pb[1];
-	triangle->norm[1] = pa[2] * pb[0] - pa[0] * pb[2];
-	triangle->norm[2] = pa[0] * pb[1] - pa[1] * pb[0];
-
-	double total = sqrt(triangle->norm[0] * triangle->norm[0] +
-	                    triangle->norm[1] * triangle->norm[1] +
-	                    triangle->norm[2] * triangle->norm[2]);
-
-	triangle->norm[0] /= total;
-	triangle->norm[1] /= total;
-	triangle->norm[2] /= total;
+	crossd3((gdouble*)triangle->p.l,
+	        (gdouble*)triangle->p.m,
+	        (gdouble*)triangle->p.r, triangle->norm);
+	normd(triangle->norm);
 
 	/* Store bounding box, for get_intersect */
 	RoamPoint *p[] = {l,m,r};
@@ -393,7 +376,7 @@ void roam_triangle_update_errors(RoamTriangle *triangle, RoamSphere *sphere)
 		if (roam_triangle_backface(triangle->t.l, sphere) ||
 		    roam_triangle_backface(triangle->t.b, sphere) ||
 		    roam_triangle_backface(triangle->t.r, sphere))
-			triangle->error *= 500;
+			triangle->error *= 50;
 	}
 }
 
@@ -777,6 +760,7 @@ void roam_sphere_merge_one(RoamSphere *sphere)
 gint roam_sphere_split_merge(RoamSphere *sphere)
 {
 	gint iters = 0, max_iters = 500;
+	//gint target = 20000;
 	//gint target = 4000;
 	gint target = 2000;
 	//gint target = 500;