From d68ce01b63702d21c363d8db49bcdda35a198057 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 21 Oct 2019 22:34:37 +0200
Subject: [PATCH] gradient function considers 4 coordinates

---
 basegraph.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/basegraph.cpp b/basegraph.cpp
index d2a31102..7ed75bb8 100644
--- a/basegraph.cpp
+++ b/basegraph.cpp
@@ -922,7 +922,7 @@ EX void drawmessages() {
 EX color_t gradient(color_t c0, color_t c1, ld v0, ld v, ld v1) {
   int vv = int(256 * ((v-v0) / (v1-v0)));
   color_t c = 0;
-  for(int a=0; a<3; a++) {
+  for(int a=0; a<4; a++) {
     int p0 = part(c0, a);
     int p1 = part(c1, a);
     part(c, a) = (p0*(256-vv) + p1*vv + 127) >> 8;