diff --git a/interface.xcodeproj/project.xcworkspace/xcuserdata/philip.xcuserdatad/UserInterfaceState.xcuserstate b/interface.xcodeproj/project.xcworkspace/xcuserdata/philip.xcuserdatad/UserInterfaceState.xcuserstate
index 3777b3430e..ffc75fe28f 100644
Binary files a/interface.xcodeproj/project.xcworkspace/xcuserdata/philip.xcuserdatad/UserInterfaceState.xcuserstate and b/interface.xcodeproj/project.xcworkspace/xcuserdata/philip.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/lattice.cpp b/lattice.cpp
index f6b67fe639..58ecb95093 100644
--- a/lattice.cpp
+++ b/lattice.cpp
@@ -11,7 +11,7 @@
 Lattice::Lattice(int w, int h) {
     width = w;
     height = h;
-    tilegap = 3;
+    tilegap = 2;
     lastindex = -1;
     tiles = new Tile[width*height];
     for (int i = 0; i < (width*height); i++) {
diff --git a/main.cpp b/main.cpp
index b1b3f06690..5f79193e59 100644
--- a/main.cpp
+++ b/main.cpp
@@ -110,7 +110,7 @@ Cloud cloud(0,                             //  Particles
 
 VoxelSystem voxels(0, box);
 
-Lattice lattice(15,10);
+Lattice lattice(160,100);
 Finger myFinger(WIDTH, HEIGHT);
 
 #define RENDER_FRAME_MSECS 8
@@ -119,7 +119,7 @@ int steps_per_frame = 0;
 
 float yaw =0.f;                         //  The yaw, pitch for the avatar head
 float pitch = 0.f;                      //      
-float start_yaw = 135.0;
+float start_yaw = 116;
 float render_yaw = start_yaw;
 float render_pitch = 0.f;
 float render_yaw_rate = 0.f;
@@ -129,7 +129,10 @@ float lateral_vel = 0.f;
 // Manage speed and direction of motion
 GLfloat fwd_vec[] = {0.0, 0.0, 1.0};
 //GLfloat start_location[] = { WORLD_SIZE*1.5, -WORLD_SIZE/2.0, -WORLD_SIZE/3.0};
-GLfloat start_location[] = { 0.1, -0.15, 0.1};
+//GLfloat start_location[] = { 0.1, -0.15, 0.1};
+
+GLfloat start_location[] = {6.1, -2.0, 1.4};
+
 GLfloat location[] = {start_location[0], start_location[1], start_location[2]};
 float fwd_vel = 0.0f;
 
@@ -253,10 +256,12 @@ void display_stats(void)
     }
 #endif
     
-    
     char adc[200];
-	sprintf(adc, "location = %3.1f,%3.1f,%3.1f", 
-            location[0], location[1], location[2] 
+	sprintf(adc, "location = %3.1f,%3.1f,%3.1f, angle_to 0,0,0 = %3.1f, head yaw = %3.1f, render_yaw = %3.1f, together = %3.1f",
+            -location[0], -location[1], -location[2],
+            azimuth_to(myHead.getPos()*-1.f, glm::vec3(0,0,0)),
+            myHead.getYaw(), render_yaw,
+            angle_to(myHead.getPos()*-1.f, glm::vec3(0,0,0), render_yaw, myHead.getYaw())
             );
     drawtext(10, 50, 0.10, 0, 1.0, 0, adc);
      
@@ -560,7 +565,7 @@ void display(void)
         glMaterialfv(GL_FRONT, GL_SPECULAR, specular_color);
         glMateriali(GL_FRONT, GL_SHININESS, 96);
            
-        //  Rotate, translate to camera location 
+        //  Rotate, translate to camera location
         glRotatef(render_pitch, 1, 0, 0);
         glRotatef(render_yaw, 0, 1, 0);
         glTranslatef(location[0], location[1], location[2]);
@@ -592,11 +597,16 @@ void display(void)
      
     
         if (!display_head) balls.render();
-            
+    
         //  Render the world box 
         if (!display_head && stats_on) render_world_box();
     
-        //glm::vec3 test(0.5, 0.5, 0.5); 
+    glPushMatrix();
+    glTranslatef(2,2,2);
+    glColor3f(1,0,0);
+    glutSolidCube(1.0);
+    glPopMatrix();
+        //glm::vec3 test(0.5, 0.5, 0.5);
         //render_vector(&test);
 
     glPopMatrix();
@@ -609,7 +619,7 @@ void display(void)
         glDisable(GL_DEPTH_TEST);
         glDisable(GL_LIGHTING);
 
-        lattice.render(WIDTH, HEIGHT);
+        //lattice.render(WIDTH, HEIGHT);
         //drawvec3(100, 100, 0.15, 0, 1.0, 0, myHead.getPos(), 0, 1, 0);
         glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, pointer_attenuation_quadratic );
 
diff --git a/util.cpp b/util.cpp
index 35933b85a5..91ff2124fa 100644
--- a/util.cpp
+++ b/util.cpp
@@ -19,6 +19,17 @@ float randFloat () {
     return (rand()%10000)/10000.f;
 }
 
+//  Return the azimuth angle in degrees between a head position and a sound source,
+//  given the two positions.
+float azimuth_to(glm::vec3 head_pos, glm::vec3 source_pos) {
+    return atan2(head_pos.x - source_pos.x, head_pos.z - source_pos.z) * 180 / PI;
+}
+
+float angle_to(glm::vec3 head_pos, glm::vec3 source_pos, float render_yaw, float head_yaw) {
+    return atan2(head_pos.x - source_pos.x, head_pos.z - source_pos.z) * 180 / PI + render_yaw + head_yaw;
+}
+
+
 
 void render_vector(glm::vec3 * vec)
 {
diff --git a/util.h b/util.h
index 963d2edff7..3bd3898661 100644
--- a/util.h
+++ b/util.h
@@ -11,6 +11,9 @@
 
 #include "glm/glm.hpp"
 
+float azimuth_to(glm::vec3 head_pos, glm::vec3 source_pos);
+float angle_to(glm::vec3 head_pos, glm::vec3 source_pos, float render_yaw, float head_yaw);
+
 void outstring(char * string, int length);
 float randFloat();
 void render_world_box();