From c72572cc5005f4c99b8f4cb69bdf9c920cb14987 Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Mon, 31 May 2021 17:11:58 -0400
Subject: [PATCH] blitsets: break up egcs/plotegcs, use latter for plots #1490

---
 src/lib/blit.c     | 27 ++++++++++++++++++---------
 src/lib/internal.h |  1 +
 src/lib/plot.c     |  2 +-
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/src/lib/blit.c b/src/lib/blit.c
index 57a8354db3..228839ac9d 100644
--- a/src/lib/blit.c
+++ b/src/lib/blit.c
@@ -857,23 +857,32 @@ braille_blit(ncplane* nc, int linesize, const void* data,
 // always be the full block █ (note that this will be rendered as a space, so
 // it's safe to use even in the NCBLIT_1x1 ASCII case).
 static struct blitset notcurses_blitters[] = {
-   { .geom = NCBLIT_8x1,     .width = 1, .height = 8, .egcs = L" ▁▂▃▄▅▆▇█",
+   { .geom = NCBLIT_8x1,     .width = 1, .height = 8,
+     .egcs = NULL,           .plotegcs = L" ▁▂▃▄▅▆▇█",
      .blit = tria_blit,      .name = "eightstep",     .fill = false, },
-   { .geom = NCBLIT_1x1,     .width = 1, .height = 1, .egcs = L" █",
+   { .geom = NCBLIT_1x1,     .width = 1, .height = 1,
+     .egcs = L" █",          .plotegcs = L" █",
      .blit = tria_blit_ascii,.name = "ascii",         .fill = false, },
-   { .geom = NCBLIT_2x1,     .width = 1, .height = 2, .egcs = L" ▀▄█",
+   { .geom = NCBLIT_2x1,     .width = 1, .height = 2,
+     .egcs = L" ▀▄█",        .plotegcs = L" ▄█",
      .blit = tria_blit,      .name = "half",          .fill = false, },
-   { .geom = NCBLIT_2x2,     .width = 2, .height = 2, .egcs = L" ▘▝▀▖	▌▞▛▗▚▐▜▄▙▟█",
+   { .geom = NCBLIT_2x2,     .width = 2, .height = 2,
+     .egcs = L" ▗▐▖▄▟▌▙█",   .plotegcs = L" ▘▝▀▖▌▞▛▗▚▐▜▄▙▟█",
      .blit = quadrant_blit,  .name = "quad",          .fill = false, },
-   { .geom = NCBLIT_3x2,     .width = 2, .height = 3, .egcs = L" 🬞🬦▐🬏🬭🬵🬷🬓🬱🬹🬻▌🬲🬺█",
+   { .geom = NCBLIT_3x2,     .width = 2, .height = 3,
+     .egcs = L" 🬞🬦▐🬏🬭🬵🬷🬓🬱🬹🬻▌🬲🬺█", .plotegcs = NULL,
      .blit = sextant_blit,   .name = "sex",           .fill = false, },
-   { .geom = NCBLIT_4x1,     .width = 1, .height = 4, .egcs = L" ▂▄▆█",
+   { .geom = NCBLIT_4x1,     .width = 1, .height = 4,
+     .egcs = NULL,           .plotegcs = L" ▂▄▆█",
      .blit = tria_blit,      .name = "fourstep",      .fill = false, },
-   { .geom = NCBLIT_BRAILLE, .width = 2, .height = 4, .egcs = L"⠀⢀⢠⢰⢸⡀⣀⣠⣰⣸⡄⣄⣤⣴⣼⡆⣆⣦⣶⣾⡇⣇⣧⣷⣿",
+   { .geom = NCBLIT_BRAILLE, .width = 2, .height = 4,
+     .egcs = L"⠀⢀⢠⢰⢸⡀⣀⣠⣰⣸⡄⣄⣤⣴⣼⡆⣆⣦⣶⣾⡇⣇⣧⣷⣿", .plotegcs = NULL,
      .blit = braille_blit,   .name = "braille",       .fill = true,  },
-   { .geom = NCBLIT_PIXEL,   .width = 1, .height = 1, .egcs = L"",
+   { .geom = NCBLIT_PIXEL,   .width = 1, .height = 1,
+     .egcs = L"",            .plotegcs = L"",
      .blit = sixel_blit,     .name = "pixel",         .fill = true,  },
-   { .geom = 0,              .width = 0, .height = 0, .egcs = NULL,
+   { .geom = 0,              .width = 0, .height = 0,
+     .egcs = NULL,           .plotegcs = NULL,
      .blit = NULL,           .name = NULL,            .fill = false,  },
 };
 
diff --git a/src/lib/internal.h b/src/lib/internal.h
index 33015810e5..2db2750bb0 100644
--- a/src/lib/internal.h
+++ b/src/lib/internal.h
@@ -542,6 +542,7 @@ struct blitset {
   // quickly, i.e. it can be indexed as height arrays of 1 + height glyphs. i.e.
   // the first five braille EGCs are all 0 on the left, [0..4] on the right.
   const wchar_t* egcs;
+  const wchar_t* plotegcs;
   ncblitter blit;
   const char* name;
   bool fill;
diff --git a/src/lib/plot.c b/src/lib/plot.c
index e29ce5d2d9..ca06f6e863 100644
--- a/src/lib/plot.c
+++ b/src/lib/plot.c
@@ -124,7 +124,7 @@ int redraw_plot_##T(nc##X##plot* ncp){ \
        direction, drawing egcs from the grid specification, aborting early if \
        we can't draw anything in a given cell. */ \
     T intervalbase = ncp->miny; \
-    const wchar_t* egc = ncp->bset->egcs; \
+    const wchar_t* egc = ncp->bset->plotegcs; \
     bool done = !ncp->bset->fill; \
     for(int y = 0 ; y < dimy ; ++y){ \
       uint64_t channels = 0; \