diff --git a/basegraph.cpp b/basegraph.cpp
index 24332e61..92fc2097 100644
--- a/basegraph.cpp
+++ b/basegraph.cpp
@@ -17,6 +17,8 @@ struct display_data {
   cell *precise_center;
   /** The current rotation, relative to precise_center. */
   transmatrix view_matrix;
+  /** Camera rotation, used in nonisotropic geometries. */
+  transmatrix local_perspective;
   /** The view relative to the player character. */
   transmatrix player_matrix;
   /** On-screen coordinates for all the visible cells. */
@@ -52,6 +54,7 @@ struct display_data {
 #define centerover (current_display->precise_center)
 #define gmatrix (current_display->cellmatrices)
 #define gmatrix0 (current_display->old_cellmatrices)
+#define NLP (current_display->local_perspective)
 
 #endif
 
diff --git a/graph.cpp b/graph.cpp
index d5f06338..923a0a26 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -3541,7 +3541,7 @@ void make_clipping_planes() {
     hyperpoint sx = point3(y1 * z2 - y2 * z1, z1 * x2 - z2 * x1, x1 * y2 - x2 * y1);
     sx /= hypot_d(3, sx);
     sx[3] = 0;
-    if(nisot::local_perspective_used()) sx = inverse(nisot::local_perspective) * sx;
+    if(nisot::local_perspective_used()) sx = inverse(NLP) * sx;
     clipping_planes.push_back(sx);
     };
   ld tx = current_display->tanfov;
@@ -4248,7 +4248,7 @@ EX void make_actual_view() {
     ld max = WDIM == 2 ? vid.camera : vid.yshift;
     if(max) {
       transmatrix Start = inverse(actual_view_transform * View);
-      ld d = wall_radar(centerover, Start, nisot::local_perspective, max);
+      ld d = wall_radar(centerover, Start, NLP, max);
       actual_view_transform = get_shift_view_of(ztangent(d), actual_view_transform * View) * inverse(View); 
       }
     camera_level = asin_auto(tC0(inverse(actual_view_transform * View))[2]);
@@ -4256,8 +4256,8 @@ EX void make_actual_view() {
   if(nonisotropic) {
     transmatrix T = actual_view_transform * View;
     transmatrix T2 = eupush( tC0(inverse(T)) );
-    nisot::local_perspective = T * T2;
-    actual_view_transform = inverse(nisot::local_perspective) * actual_view_transform;
+    NLP = T * T2;
+    actual_view_transform = inverse(NLP) * actual_view_transform;
     }
   #endif
   #if MAXMDIM >= 4
diff --git a/hyperpoint.cpp b/hyperpoint.cpp
index 3246cf29..780afb84 100644
--- a/hyperpoint.cpp
+++ b/hyperpoint.cpp
@@ -1171,11 +1171,11 @@ EX ld geo_dist(const hyperpoint h1, const hyperpoint h2, iePrecision p) {
   }
 
 EX hyperpoint lp_iapply(const hyperpoint h) {
-  return nisot::local_perspective_used() ? inverse(nisot::local_perspective) * h : h;
+  return nisot::local_perspective_used() ? inverse(NLP) * h : h;
   }
 
 EX hyperpoint lp_apply(const hyperpoint h) {
-  return nisot::local_perspective_used() ? nisot::local_perspective * h : h;
+  return nisot::local_perspective_used() ? NLP * h : h;
   }
 
 EX hyperpoint smalltangent() { return xtangent(.1); }
diff --git a/hypgraph.cpp b/hypgraph.cpp
index f423e8a4..89bce806 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -320,7 +320,7 @@ EX void applymodel(hyperpoint H, hyperpoint& ret) {
     H /= exp(zlev);
     hybrid::in_underlying_geometry([&] { applymodel(H, ret); });
     ret[2] = zlev * models::product_z_scale;
-    ret = nisot::local_perspective * ret;
+    ret = NLP * ret;
     return;    
     }
   
@@ -514,7 +514,7 @@ EX void applymodel(hyperpoint H, hyperpoint& ret) {
     case mdHyperboloid: {
 
       if(nonisotropic) {
-        // if(nisot::local_perspective_used()) H = nisot::local_perspective * H;
+        // if(nisot::local_perspective_used()) H = NLP * H;
         ret = lp_apply(H);
         break;
         }    
@@ -1369,7 +1369,7 @@ EX void centerpc(ld aspd) {
     int sl = snakelevel(cwt.at);
     if(sl && WDIM == 2) T = T * zpush(cgi.SLEV[sl] - cgi.FLOOR);
     View = inverse(T);
-    if(prod) nisot::local_perspective = inverse(pc->ori);
+    if(prod) NLP = inverse(pc->ori);
     if(WDIM == 2) rotate_view( cspin(0, 1, M_PI) * cspin(2, 1, M_PI/2 + shmup::playerturny[id]) * spin(-M_PI/2) );
     return;
     }
@@ -1486,7 +1486,7 @@ EX void resetview() {
     View = Id;
     }
   cwtV = View;
-  nisot::local_perspective = Id;
+  NLP = Id;
   // SDL_LockSurface(s);
   // SDL_UnlockSurface(s);
   }
@@ -2069,7 +2069,7 @@ EX int cone_side(const hyperpoint H) {
 
 /** get the current orientation of the view */
 EX transmatrix& get_view_orientation() {
-  return prod ? nisot::local_perspective : View;
+  return prod ? NLP : View;
   }
 
 /** rotate the view using the given rotation matrix */
diff --git a/nonisotropic.cpp b/nonisotropic.cpp
index d2813cee..2e358f2e 100644
--- a/nonisotropic.cpp
+++ b/nonisotropic.cpp
@@ -13,7 +13,6 @@ EX namespace nisot {
   typedef array<float, 3> ptlow;
   #endif
 
-  EX transmatrix local_perspective;
   #if HDR
   inline bool local_perspective_used() { return nonisotropic || prod; }
   #endif
@@ -1674,7 +1673,7 @@ EX namespace rots {
     auto g = std::move(gmatrix);
     auto g0 = std::move(gmatrix0);
     
-    ld alpha = atan2(inverse(nisot::local_perspective) * point3(1, 0, 0));
+    ld alpha = atan2(inverse(NLP) * point3(1, 0, 0));
     
     bool inprod = prod;
     transmatrix pView = View;
diff --git a/radar.cpp b/radar.cpp
index aa72cee7..0e1cd64f 100644
--- a/radar.cpp
+++ b/radar.cpp
@@ -32,7 +32,7 @@ pair<bool, hyperpoint> makeradar(hyperpoint h) {
     else return {false, h};
     }
   if(prod) h = product::inverse_exp(h);
-  if(nisot::local_perspective_used()) h = nisot::local_perspective * h;
+  if(nisot::local_perspective_used()) h = NLP * h;
   
   if(WDIM == 3) {
     if(d >= vid.radarrange) return {false, h};
@@ -141,7 +141,7 @@ EX void draw_radar(bool cornermode) {
   
   if(scompass) {
     auto compassdir = [&] (char dirname, hyperpoint h) {
-      h = nisot::local_perspective * h * .8;
+      h = NLP * h * .8;
       queueline(atscreenpos(cx+rad * h[0], cy - rad * h[2] * si + rad * h[1] * co, 0)*C0, atscreenpos(cx+rad*h[0], cy - rad*h[2] * si, 0)*C0, 0xA0401040, -1);
       displaychr(int(cx+rad * h[0]), int(cy - rad * h[2] * si + rad * h[1] * co), 0, 8, dirname, 0xA04010);
       };
diff --git a/raycaster.cpp b/raycaster.cpp
index 1bbec120..e7988b80 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -817,7 +817,7 @@ EX void cast() {
   cell *cs = centerover;
 
   transmatrix T = cview();
-  if(nonisotropic) T = nisot::local_perspective * T;
+  if(nonisotropic) T = NLP * T;
   T = inverse(T);
 
   virtualRebase(cs, T, true);
@@ -849,7 +849,7 @@ EX void cast() {
   GLERR("uniform length");
   
   glUniformMatrix4fv(o->uStart, 1, 0, glhr::tmtogl_transpose3(T).as_array());
-  if(o->uLP != -1) glUniformMatrix4fv(o->uLP, 1, 0, glhr::tmtogl_transpose3(inverse(nisot::local_perspective)).as_array());
+  if(o->uLP != -1) glUniformMatrix4fv(o->uLP, 1, 0, glhr::tmtogl_transpose3(inverse(NLP)).as_array());
   GLERR("uniform start");
   uniform2(o->uStartid, enc(ids[cs], 0));
   GLERR("uniform startid");
diff --git a/shaders.cpp b/shaders.cpp
index d57abbd3..b0379fa4 100644
--- a/shaders.cpp
+++ b/shaders.cpp
@@ -358,7 +358,7 @@ void display_data::set_projection(int ed) {
     else M[2][2] /= 1000;
     glhr::projection_multiply(M);
     if(nisot::local_perspective_used() && (shader_flags & SF_BOX))
-      glhr::projection_multiply(glhr::tmtogl_transpose(nisot::local_perspective));
+      glhr::projection_multiply(glhr::tmtogl_transpose(NLP));
     if(ed) {
       glhr::glmatrix m = glhr::id;
       m[2][0] -= ed;
@@ -374,10 +374,10 @@ void display_data::set_projection(int ed) {
     glhr::projection_multiply(glhr::scale(1, -1, -1));
     if(nisot::local_perspective_used()) {
       if(prod) {
-        for(int i=0; i<3; i++) nisot::local_perspective[3][i] = nisot::local_perspective[i][3] = 0;
-        nisot::local_perspective[3][3] = 1;
+        for(int i=0; i<3; i++) NLP[3][i] = NLP[i][3] = 0;
+        NLP[3][3] = 1;
         }
-      glhr::projection_multiply(glhr::tmtogl_transpose(nisot::local_perspective));
+      glhr::projection_multiply(glhr::tmtogl_transpose(NLP));
       }
     if(ed) {
       glhr::using_eyeshift = true;