diff --git a/control.cpp b/control.cpp
index 97dc9b26..d859792b 100644
--- a/control.cpp
+++ b/control.cpp
@@ -392,11 +392,17 @@ EX void full_rotate_camera(int dir, ld val) {
   else if(GDIM == 3) {
     val *= camera_rot_speed;
     if(third_person_rotation) shift_view(ctangent(2, -third_person_rotation)), didsomething = true, playermoved = false;
-    if(keep_vertical()) {
+    ld max_angle = quarter_circle - 1e-4;
+    if(walking::on && dir == 1) {
+      max_angle /= degree;
+      walking::eye_angle += val * walking::eye_angle_scale / degree;
+      if(walking::eye_angle > max_angle) walking::eye_angle = max_angle;
+      if(walking::eye_angle < -max_angle) walking::eye_angle = -max_angle;
+      }
+    else if(keep_vertical()) {
       hyperpoint vv = vertical_vector();
       ld alpha = -atan2(vv[2], vv[1]);
       rotate_view(cspin(2, 1, alpha));
-      ld max_angle = quarter_circle - 1e-4;
       if(dir == 1 && alpha + val > max_angle)
         val = max_angle - alpha;
       if(dir == 1 && alpha + val < -max_angle)
diff --git a/intra.cpp b/intra.cpp
index ec417d61..8269ac5f 100644
--- a/intra.cpp
+++ b/intra.cpp
@@ -139,8 +139,8 @@ hyperpoint portal_data::from_poco(hyperpoint h) const {
   }
 
 EX portal_data make_portal(cellwalker cw, int spin) {
-  if(debug_portal & 33)
-    println(hlog, "working in: ", full_geometry_name());
+  if(debug_portal & 289)
+    println(hlog, "working in: ", full_geometry_name(), " wall no ", cw.spin, "/", cw.at->type);
   auto& ss = currentmap->get_cellshape(cw.at);
   auto fac = ss.faces_local[cw.spin];
   portal_data id;
@@ -261,6 +261,23 @@ EX portal_data make_portal(cellwalker cw, int spin) {
     println(hlog, "chosen edge is ", first, "--", second);
     }
 
+  if(debug_portal & 256) {
+    println(hlog, "portal scale = ", id.scale);
+    auto res = [&] (ld x, ld y, ld z) {
+      hyperpoint h = hyperpoint(x, y, z, 1);
+      return id.from_poco(h);
+      };
+    for(int x=0; x<5; x++) {
+      println(hlog, "horizontal ", x, " = ", hdist(res(x*.1,0,0), res(x*.1+.001,0,0)));
+      println(hlog, "vertical   ", x, " = ", hdist(res(x*.1,0,0), res(x*.1,0.001,0)));
+      println(hlog, "deep       ", x, " = ", hdist(res(x*.1,0,0), res(x*.1,0,0.001)));
+      }
+    hyperpoint a = hyperpoint(.4, .2, .1, 1);
+    println(hlog, "a = ", a);
+    println(hlog, "b = ", id.from_poco(a));
+    println(hlog, "c = ", id.to_poco(id.from_poco(a)));
+    }
+
   if(debug_portal & 1) {
     for(auto p: fac) {
       auto p2 = id.to_poco(p);