From 8b7ae8db808d76ddea503f94e142c7d37c1b43d3 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Thu, 5 Jun 2025 19:42:36 -0700
Subject: more  work on fog & c30

---
 math.cginc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'math.cginc')

diff --git a/math.cginc b/math.cginc
index bb01823..f4e8f3a 100644
--- a/math.cginc
+++ b/math.cginc
@@ -8,6 +8,10 @@
 #define HALF_PI (PI * 0.5)
 #define PHI 1.618033989
 #define SQRT_2_RCP 0.707106781
+#define TWO_OVER_THREE  0.6666666666666666f
+#define SQRT_3_OVER_2   0.8660254037844386f
+#define EULERS_CONSTANT 2.718281828
+
 
 float pow5(float x)
 {
@@ -285,9 +289,6 @@ float3 cmykToRgb(float4 cmyk) {
 
 // Cartesian to cube hexagonal coordinates.
 // Based on this: https://backdrifting.net/post/064_hex_grids
-#define TWO_OVER_THREE  0.6666666666666666f
-#define SQRT_3_OVER_2   0.8660254037844386f
-
 float3 cart_to_hex(float2 cart) {
   float p = cart.x;
   float q = dot(cart, float2(0.5f, SQRT_3_OVER_2));
-- 
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