directvt#571 WIP: Revise title rendering (shadows + fix overbright)

o-sdn-o · Apr 19, 2024 · 6659c6f · 6659c6f
1 parent 37012c2
commit 6659c6f
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Showing 4 changed files with 95 additions and 90 deletions.
diff --git a/src/netxs/desktopio/canvas.hpp b/src/netxs/desktopio/canvas.hpp
@@ -2962,7 +2962,10 @@ namespace netxs
             digest++;
         }
     };
+}
 
+namespace netxs::misc
+{
     template<si32 Repeat = 2, bool InnerGlow = faux, class T = vrgb, class P = noop, si32 Ratio = 1>
     void boxblur(auto& image, si32 r, T&& cache = {}, P shade = {})
     {
@@ -2998,4 +3001,20 @@ namespace netxs
                                                      d_width, Ratio, s_point,
                                                                      d_point, shade);
     }
+    void contour(auto& image)
+    {
+        static auto shadows_cache = std::vector<fp32>{};
+        static auto boxblur_cache = std::vector<fp32>{};
+        auto r = image.area();
+        auto v = r.size.x * r.size.y;
+        boxblur_cache.resize(v);
+        shadows_cache.resize(v);
+        auto shadows_image = netxs::raster<std::span<fp32>, rect>{ shadows_cache, r };
+        shadows_image.step(-dot_11);
+        netxs::onbody(image, shadows_image, [](auto& src, auto& dst){ dst = src ? 255.f * 3.f : 0.f; });
+        shadows_image.step(dot_11);
+        shadows_image.clip(r);
+        netxs::misc::boxblur<2>(shadows_image, 1, boxblur_cache);
+        netxs::oncopy(image, shadows_image, [](auto& src, auto& dst){ src.chan.a = src ? 0xFF : (byte)std::clamp(dst, 0.f, 255.f); });
+    }
 }
diff --git a/src/netxs/desktopio/geometry.hpp b/src/netxs/desktopio/geometry.hpp
@@ -211,6 +211,7 @@ namespace netxs
         twod   map             (twod p) const { return p - coor;                              }
         rect   shift           (twod p) const { return { coor + p, size };                    }
         auto&  shift_itself    (twod p)       { coor += p; return *this;                      }
+        auto&  moveto          (twod p)       { coor = p;  return *this;                      }
         rect   operator |      (rect r) const { return unite(r, *this);                       }
         auto&  operator +=     (rect r)       { coor += r.coor; size += r.size; return *this; }
         auto&  operator -=     (rect r)       { coor -= r.coor; size -= r.size; return *this; }