From a813887de43a672975cec78d56632f5b80b5addb Mon Sep 17 00:00:00 2001
From: Tim Vaughan <timv@ughan.xyz>
Date: Fri, 17 Mar 2023 15:45:19 +0100
Subject: [PATCH] Reduced Render.eps.

---
 Render.lua   | 5 ++---
 Textures.lua | 1 +
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Render.lua b/Render.lua
index 57cb407..f690ab7 100644
--- a/Render.lua
+++ b/Render.lua
@@ -12,12 +12,12 @@ local O = Operations
 require "Textures"
 local T = Textures
 
-local eps = 0.01
+local eps = 0.001
 local max_dist2 = 30^2
 local bg_col = {0.1,0.1,0.1}
 
 local function calculate_normal(sdf, l)
-   local delta = 1e-3;
+   local delta = eps/10
    return V.new{sdf(l+V.x*delta).dist-sdf(l-V.x*delta).dist,
                 sdf(l+V.y*delta).dist-sdf(l-V.y*delta).dist,
                 sdf(l+V.z*delta).dist-sdf(l-V.z*delta).dist}/(2*delta)
@@ -54,7 +54,6 @@ local function render(scene, width, height, filename)
    local normalize = V.normalize -- optimization
    
    for y=1,height do
-
       if y % math.floor(height/10) == 0 then
          print(y/math.floor(height/10) * 10 .. "%")
       end
diff --git a/Textures.lua b/Textures.lua
index bfa1262..ad805a6 100644
--- a/Textures.lua
+++ b/Textures.lua
@@ -29,6 +29,7 @@ local function make_phong_texture(lights, mapped_pigment, amb, diff, spec, shiny
          local light_dir = (light-location)/light_dist
 
          local vis = light_visibility(location + light_dir*eps, light_dir, eps, light_dist, 1, sdf)
+         -- local vis = 1.0
 
          local Idiff = math.max(normal*light_dir, 0)
          local Ispec = math.pow(math.max(light_dir*reflected_ray,0),shiny)
-- 
2.20.1