From ef4dde6203d251741131f06824200c3d7f01f56d Mon Sep 17 00:00:00 2001
From: Tim Vaughan <timv@ughan.xyz>
Date: Thu, 23 Feb 2023 11:54:09 +0100
Subject: [PATCH] Render is now its own package.

---
 raymarch.lua => Render.lua | 38 +++++++++--------------------------
 holy_sphere.lua            | 41 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 29 deletions(-)
 rename raymarch.lua => Render.lua (64%)
 create mode 100644 holy_sphere.lua

diff --git a/raymarch.lua b/Render.lua
similarity index 64%
rename from raymarch.lua
rename to Render.lua
index 594645e..17f244d 100644
--- a/raymarch.lua
+++ b/Render.lua
@@ -1,3 +1,5 @@
+-- Main rendering functions
+
 require "Vector"
 local V = Vector
 
@@ -77,33 +79,11 @@ local function render(scene, width, height, filename)
    print("done")
 end
 
+Render = {
+   eps = eps,
+   max_dist2 = max_dist2,
+   bg_col = bg_col,
+   render = render
+}
 
-local lights = {V.new{3,-3,1}}
-
-local scene = {
-   sdf =
-      O.union(
-         O.diff(
-            O.diff(
-               O.diff(
-                  P.make_sphere(V.new{0,0,0}, 1,
-                                T.make_phong_texture(lights,
-                                                     T.make_solid_pigment({0,1,0}),
-                                                     0.2, 0.7, 1.0, 100)),
-                  P.make_sphere(V.new{0,0,0}, 0.8)),
-               P.make_pipe(V.new{0,0,0}, 0.5, V.new{0,1,0})),
-            P.make_pipe(V.new{0,0,0}, 0.5, V.new{1,0,0})),
-
-         P.make_plane(V.new{0,0,-1.0}, V.new{0,0,1},
-                      T.make_phong_texture(lights,
-                         T.make_checkered_pigment({0.5,0,0.2}, {1,1,1}),
-                         0.2, 1.0, 0, 1))),
-                      -- T.make_flat_texture(T.make_checkered_pigment({0,0,1}, {1,1,1})))),
-                               
-   camera = {location = V.new{2,-5,1},
-             point_at = V.new{0,0,0},
-             right = V.x,
-             fov = 1}}
-
--- render(scene, 320, 200, "test.ppm")
-render(scene, 640, 480, "test.ppm")
+return Render
diff --git a/holy_sphere.lua b/holy_sphere.lua
new file mode 100644
index 0000000..b26f67e
--- /dev/null
+++ b/holy_sphere.lua
@@ -0,0 +1,41 @@
+require "Vector"
+local V = Vector
+
+require "Primitives"
+local P = Primitives
+
+require "Operations"
+local O = Operations
+
+require "Textures"
+local T = Textures
+
+require "Render"
+
+local lights = {V.new{3,-3,1}}
+
+local scene = {
+   sdf =
+      O.union(
+         O.diff(
+            O.diff(
+               O.diff(
+                  P.make_sphere(V.new{0,0,0}, 1,
+                                T.make_phong_texture(lights,
+                                                     T.make_solid_pigment({0,1,0}),
+                                                     0.2, 0.7, 1.0, 100)),
+                  P.make_sphere(V.new{0,0,0}, 0.8)),
+               P.make_pipe(V.new{0,0,0}, 0.5, V.new{0,1,0})),
+            P.make_pipe(V.new{0,0,0}, 0.5, V.new{1,0,0})),
+
+         P.make_plane(V.new{0,0,-1.0}, V.new{0,0,1},
+                      T.make_phong_texture(lights,
+                         T.make_checkered_pigment({0.5,0,0.2}, {1,1,1}),
+                         0.2, 1.0, 0, 1))),
+                               
+   camera = {location = V.new{2,-5,1},
+             point_at = V.new{0,0,0},
+             right = V.x,
+             fov = 1}}
+
+Render.render(scene, 1280, 960, "holy_sphere.ppm")
-- 
2.20.1