diff --git a/cell.cpp b/cell.cpp
index 71cb8ed6..b531b6a6 100644
--- a/cell.cpp
+++ b/cell.cpp
@@ -917,7 +917,7 @@ EX cdata *arcmCdata(cell *c) {
   }
 
 EX int getCdata(cell *c, int j) {
-  if(prod) { c = hybrid::get_where(c).first; return PIU(getBits(c)); }
+  if(hybri) { c = hybrid::get_where(c).first; return PIU(getBits(c)); }
   else if(euc::in()) return getEuclidCdata(euc2_coordinates(c))->val[j];
   else if(arcm::in() && euclid)
     return getEuclidCdata(pseudocoords(c))->val[j];
@@ -935,7 +935,7 @@ EX int getCdata(cell *c, int j) {
   }
 
 EX int getBits(cell *c) {
-  if(prod) { c = hybrid::get_where(c).first; return PIU(getBits(c)); }
+  if(hybri) { c = hybrid::get_where(c).first; return PIU(getBits(c)); }
   else if(euc::in()) return getEuclidCdata(euc2_coordinates(c))->bits;
   else if(arcm::in() && euclid)
     return getEuclidCdata(pseudocoords(c))->bits;
diff --git a/hyperpoint.cpp b/hyperpoint.cpp
index c9ec5e2c..1847f4f9 100644
--- a/hyperpoint.cpp
+++ b/hyperpoint.cpp
@@ -384,6 +384,30 @@ EX ld hypot_d(int d, const hyperpoint& h) {
   return sqrt(sqhypot_d(d, h));
   }
 
+/** @brief h1 and h2 define a line; to_other_side(h1,h2)*x is x moved orthogonally to this line, by double the distance from C0 
+ *  (I suppose it could be done better)
+ */
+EX transmatrix to_other_side(hyperpoint h1, hyperpoint h2) {
+
+  ld d = hdist(h1, h2);
+  
+  hyperpoint v;  
+  if(euclid)
+    v = (h2 - h1) / d;    
+  else
+    v = (h1 * cos_auto(d) - h2) / sin_auto(d);
+
+  ld d1;
+  if(euclid)
+    d1 = -(v|h1) / (v|v);
+  else
+    d1 = atan_auto(-v[LDIM] / h1[LDIM]);
+  
+  hyperpoint hm = h1 * cos_auto(d1) + v * sin_auto(d1);
+  
+  return rspintox(hm) * xpush(-hdist0(hm) * 2) * spintox(hm);
+  }
+
 /** @brief positive for a material vertex, 0 for ideal vertex, negative for ultra-ideal vertex */
 EX ld material(const hyperpoint& h) {
   if(sphere) return intval(h, Hypc);
diff --git a/nonisotropic.cpp b/nonisotropic.cpp
index d0b00c93..9b4570e0 100644
--- a/nonisotropic.cpp
+++ b/nonisotropic.cpp
@@ -1072,12 +1072,7 @@ EX namespace hybrid {
       transmatrix T;
       cell *cw = hybrid::get_where(c).first;
       hybrid::in_underlying_geometry([&] {
-        hyperpoint h0 = get_corner_position(cw, i);
-        hyperpoint h1 = get_corner_position(cw, (i+1));
-        hyperpoint hm = mid(h0, h1);
-        ld d = hdist0(hm);
-        d *= 2;
-        T = xpush(-d) * spintox(hm);
+        T = to_other_side(get_corner_position(cw, i), get_corner_position(cw, (i+1)));
         });
       return T;
       }
diff --git a/raycaster.cpp b/raycaster.cpp
index a37af553..9a2f8428 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -74,7 +74,7 @@ EX bool available() {
     return true;
   if(euclid && pmodel == mdPerspective && !bt::in())
     return true;
-  if(prod && (PURE || BITRUNCATED))
+  if(prod)
     return true;
   if(pmodel == mdPerspective && stretch::in())
     return true;
@@ -199,7 +199,7 @@ void enable_raycaster() {
     bool asonov = hr::asonov::in();
     bool use_reflect = reflect_val && !nil && !levellines;
     
-    bool bi = BITRUNCATED;
+    bool bi = arcm::in() || kite::in() || arb::in() || !PURE;
 
     string vsh = 
       "attribute mediump vec4 aPosition;\n"