whiteout: better brackets in mathtext

src/demo/whiteout.c

@@ -26,15 +26,15 @@ mathplane(struct notcurses* nc){
   ncplane_set_fg(n, 0xd4af37); // metallic gold
   ncplane_set_bg(n, 0x0);
   if(n){
-    ncplane_printf_aligned(n, 0, NCALIGN_RIGHT, "∮E⋅da=Q,n→∞,∑f(i)=∏g(i)⎧⎡⎛       ⎞⎤⎫");
-    ncplane_printf_aligned(n, 1, NCALIGN_RIGHT, "⎪⎢⎜ 8πG   ⎟⎥⎪");
-    ncplane_printf_aligned(n, 2, NCALIGN_RIGHT, "∀x∈ℝ:⌈x⌉=−⌊−x⌋,α∧¬β=¬(¬α∨β)⎪⎢⎜ ───Tμν⎟⎥⎪");
-    ncplane_printf_aligned(n, 3, NCALIGN_RIGHT, "⎪⎢⎜  c⁴   ⎟⎥⎪");
-    ncplane_printf_aligned(n, 4, NCALIGN_RIGHT, "ℕ⊆ℕ₀⊂ℤ⊂ℚ⊂ℝ⊂ℂ(z̄=ℜ(z)−ℑ(z)⋅𝑖)⎨⎢⎜       ⎟⎥⎬");
-    ncplane_printf_aligned(n, 5, NCALIGN_RIGHT, "⎪⎢⎜ ∞     ⎟⎥⎪");
-    ncplane_printf_aligned(n, 6, NCALIGN_RIGHT, "⊥<a≠b≡c≤d≪⊤⇒(⟦A⟧⇔⟪B⟫)⎪⎢⎜ ⎲     ⎟⎥⎪");
-    ncplane_printf_aligned(n, 7, NCALIGN_RIGHT, "⎪⎢⎜ ⎳aⁱ-bⁱ⎟⎥⎪");
-    ncplane_printf_aligned(n, 8, NCALIGN_RIGHT, "2H₂+O₂⇌2H₂O,R=4.7kΩ,⌀200µm⎩⎣⎝i=1    ⎠⎦⎭");
+    ncplane_printf_aligned(n, 0, NCALIGN_RIGHT, "∮E⋅da=Q,n→∞,∑f(i)=∏g(i)╭╭╭       ╮╮╮");
+    ncplane_printf_aligned(n, 1, NCALIGN_RIGHT, "│││ 8πG   ││⎪");
+    ncplane_printf_aligned(n, 2, NCALIGN_RIGHT, "∀x∈ℝ:⌈x⌉=−⌊−x⌋,α∧¬β=¬(¬α∨β)│││ ───Tμν│││");
+    ncplane_printf_aligned(n, 3, NCALIGN_RIGHT, "│││  c⁴   │││");
+    ncplane_printf_aligned(n, 4, NCALIGN_RIGHT, "ℕ⊆ℕ₀⊂ℤ⊂ℚ⊂ℝ⊂ℂ(z̄=ℜ(z)−ℑ(z)⋅𝑖)⎨││       ││⎬");
+    ncplane_printf_aligned(n, 5, NCALIGN_RIGHT, "│││ ∞     │││");
+    ncplane_printf_aligned(n, 6, NCALIGN_RIGHT, "⊥<a≠b≡c≤d≪⊤⇒(⟦A⟧⇔⟪B⟫)│││ ⎲     │││");
+    ncplane_printf_aligned(n, 7, NCALIGN_RIGHT, "│││ ⎳aⁱ-bⁱ│││");
+    ncplane_printf_aligned(n, 8, NCALIGN_RIGHT, "2H₂+O₂⇌2H₂O,R=4.7kΩ,⌀200µm╰╰╰i=1    ╯╯╯");
   }
   return n;
 }

src/lib/render.c

@@ -151,20 +151,21 @@ cellcmp_and_dupfar(egcpool* dampool, cell* damcell,
 }
 
 // Extracellular state for a cell during the render process. This array is
-// passed along to rasterization, which uses only the 'damaged' bools.
+// passed along to rasterization, which uses only the 'damaged' bools. There
+// is one crender per rendered cell, and they are initialized to all zeroes.
 struct crender {
   const ncplane *p;
   unsigned fgblends;
   unsigned bgblends;
-  bool damaged;       // also used in rasterization
-  // if CELL_ALPHA_HIGHCONTRAST is in play, we apply the HSV flip once the
-  // background is locked in. set highcontrast to indicate this.
-  bool highcontrast;
   // we'll need recalculate the foreground relative to the solved background,
   // and then reapply any foreground shading from above the highcontrast
   // declaration. save the foreground state when we go highcontrast.
   unsigned hcfgblends; // number of foreground blends prior to HIGHCONTRAST
   uint32_t hcfg;       // foreground channel prior to HIGHCONTRAST
+  bool damaged;       // also used in rasterization
+  // if CELL_ALPHA_HIGHCONTRAST is in play, we apply the HSV flip once the
+  // background is locked in. set highcontrast to indicate this.
+  bool highcontrast;
 };
 
 // Emit fchannel with RGB changed to contrast effectively against bchannel.