gridlines in radar

graph.cpp

@@ -721,13 +721,13 @@ bool drawing_usershape_on(cell *c, mapeditor::eShapegroup sg) {
 ld max_eu_dist = 0;
 transmatrix radar_transform;
 
-void addradar(const transmatrix& V, char ch, color_t col, color_t outline) {
-  hyperpoint h = tC0(V);
-  if(GDIM == 3 && WDIM == 2) h = tC0(radar_transform * V);
+pair<bool, hyperpoint> makeradar(hyperpoint h) {
+  if(GDIM == 3 && WDIM == 2) h = radar_transform * h;
 
   using namespace hyperpoint_vec;
   ld d = hdist0(h);
-  if(d > sightranges[geometry]) return;
+  if(d >= sightranges[geometry]) return {false, h};
+  
   if(WDIM == 3) {
     if(d) h = h * (d / sightranges[geometry] / hypot_d(3, h));
     }
@@ -741,7 +741,21 @@ void addradar(const transmatrix& V, char ch, color_t col, color_t outline) {
     if(d > max_eu_dist) max_eu_dist = d;
     if(d) h = h * (d / (max_eu_dist + cgi.scalefactor/4) / hypot_d(3, h));
     }
-  radarpoints.emplace_back(radarpoint{h, ch, col, outline});
+  return {true, h};
+  }
+
+void addradar(const transmatrix& V, char ch, color_t col, color_t outline) {
+  hyperpoint h = tC0(V);
+  auto hp = makeradar(h);
+  if(hp.first)
+    radarpoints.emplace_back(radarpoint{hp.second, ch, col, outline});
+  }
+
+void addradar(const hyperpoint h1, const hyperpoint h2, color_t col) {
+  auto hp1 = makeradar(h1);
+  auto hp2 = makeradar(h2);
+  if(hp1.first && hp2.first)
+    radarlines.emplace_back(radarline{hp1.second, hp2.second, col});
   }
 
 color_t kind_outline(eItem it) {
@@ -4431,6 +4445,12 @@ void gridline(const transmatrix& V, const hyperpoint h1, const hyperpoint h2, co
   gridline(V, h1, V, h2, col, prec);
   }
 
+void radar_grid(cell *c, const transmatrix& V) {
+  for(int t=0; t<c->type; t++)
+    if(c->move(t) && c->move(t) < c)
+      addradar(V*get_corner_position(c, t%c->type), V*get_corner_position(c, (t+1)%c->type), gridcolor(c, c->move(t)));
+  }
+
 void draw_grid_at(cell *c, const transmatrix& V) {
   dynamicval<ld> lw(vid.linewidth, vid.linewidth);
 
@@ -6285,7 +6305,9 @@ void drawcell(cell *c, transmatrix V, int spinv, bool mirrored) {
     
     if(vid.grid || (c->land == laAsteroids && !(WDIM == 2 && GDIM == 3))) draw_grid_at(c, V);
     
-    if(onradar && WDIM == 2) addradar(V, ch, darkenedby(asciicol, darken), 0);
+    if(onradar && WDIM == 2 && GDIM == 3) addradar(V, ch, darkenedby(asciicol, darken), 0);
+    
+    if(WDIM == 2 && GDIM == 3) radar_grid(c, V);
     #endif
 
     if(!euclid) {
@@ -6861,6 +6883,7 @@ void drawthemap() {
 
   if(DIM == 3) make_clipping_planes();
   radarpoints.clear();
+  radarlines.clear();
   if(!(cmode & sm::NORMAL)) max_eu_dist = 0;
   callhooks(hooks_drawmap);
 

hud.cpp

@@ -4,6 +4,7 @@
 namespace hr {
 
 vector<radarpoint> radarpoints;
+vector<radarline> radarlines;
 
 purehookset hooks_stats;
 
@@ -396,18 +397,32 @@ void draw_radar(bool cornermode) {
     queueline(atscreenpos(cx+rad * r.h[0], cy - rad * r.h[2] * si + rad * r.h[1] * co, 0)*C0, atscreenpos(cx+rad*r.h[0], cy - rad*r.h[2] * si, 0)*C0, r.line, -1);
     }
 
+  auto locate = [&] (hyperpoint h) {
+    if(sph)
+      return point3(cx + (rad-10) * h[0], cy + (rad-10) * h[2] * si + (rad-10) * h[1] * co, +h[1] * si > h[2] * co ? 8 : 16);
+    else if(hyp) 
+      return point3(cx + rad * h[0], cy + rad * h[1], 1/(1+h[3]) * cgi.scalefactor * current_display->radius / (inHighQual ? 10 : 6));
+    else
+      return point3(cx + rad * h[0], cy + rad * h[1], rad * cgi.scalefactor / (max_eu_dist + cgi.scalefactor/4) * 0.8);
+    };
+  
+  for(auto& r: radarlines) {
+    hyperpoint h1 = locate(r.h1);
+    hyperpoint h2 = locate(r.h2);
+    h1 = tC0(atscreenpos(h1[0], h1[1], 1));
+    h2 = tC0(atscreenpos(h2[0], h2[1], 1));
+    queueline(h1, h2, r.line, -1);
+    }
+
   quickqueue();
   glflush();
   
-  for(auto& r: radarpoints)
+  for(auto& r: radarpoints) {
     if(d3) displaychr(int(cx + rad * r.h[0]), int(cy - rad * r.h[2] * si + rad * r.h[1] * co), 0, 8, r.glyph, r.color);
-    else if(sph) displaychr(int(cx + (rad-10) * r.h[0]), int(cy + (rad-10) * r.h[2] * si + (rad-10) * r.h[1] * co), 0, +r.h[1] * si > r.h[2] * co ? 8 : 16, r.glyph, r.color);
-    else if(hyp) {
-      int siz = 1/(1+r.h[3]) * cgi.scalefactor * current_display->radius / (inHighQual ? 10 : 6);
-      displaychr(int(cx + rad * r.h[0]), int(cy + rad * r.h[1]), 0, siz, r.glyph, r.color);
-      }
     else {
-      displaychr(int(cx + rad * r.h[0]), int(cy + rad * r.h[1]), 0, rad * cgi.scalefactor / (max_eu_dist + cgi.scalefactor/4) * 0.8, r.glyph, r.color);
+      hyperpoint h = locate(r.h);
+      displaychr(int(h[0]), int(h[1]), 0, int(h[2]), r.glyph, r.color);
+      }
     }
   }
 

hyper.h

@@ -1185,7 +1185,13 @@ struct radarpoint {
   color_t line;
   };
 
+struct radarline {
+  hyperpoint h1, h2;
+  color_t line;
+  };
+
 extern vector<radarpoint> radarpoints;
+extern vector<radarline> radarlines;
 
 extern vector< function<void()> > screens;