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Avoid initializing world in each call to get_color

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This commit is contained in:
Samrat Man Singh 2016-03-11 19:06:23 +05:45
parent 7b01a47c16
commit 7b75b7c2fc
1 changed files with 10 additions and 11 deletions
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21
src/raytracer.ml
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@ -63,16 +63,7 @@ and hit h ray (tmin, tmax) =
| World w -> hit_world w ray (tmin, tmax) | World w -> hit_world w ray (tmin, tmax)
let get_color ray = let get_color world ray =
let sphere1 = Sphere {center = Vec3.of_floats (0., 0., -1.);
radius = 0.5 } in
let sphere2 = Sphere {center = Vec3.of_floats (0., -100.5, -1.);
radius = 100.0 } in
let sphere3 = Sphere {center = Vec3.of_floats (-1.0, -0.75, -2.);
radius = 0.25 } in
let world = World [sphere2; sphere1; sphere3] in
match (hit world ray (0., Float.infinity)) with match (hit world ray (0., Float.infinity)) with
Some hit_result -> Some hit_result ->
let t = hit_result.t in let t = hit_result.t in
@ -90,6 +81,14 @@ let get_color ray =
let write_to_file filename = let write_to_file filename =
Random.self_init (); Random.self_init ();
let sphere1 = Sphere {center = Vec3.of_floats (0., 0., -1.);
radius = 0.5 } in
let sphere2 = Sphere {center = Vec3.of_floats (0., -100.5, -1.);
radius = 100.0 } in
let sphere3 = Sphere {center = Vec3.of_floats (-1.0, -0.75, -2.);
radius = 0.25 } in
let world = World [sphere2; sphere1; sphere3] in
let nx = 200 in let nx = 200 in
let ny = 100 in let ny = 100 in
@ -114,7 +113,7 @@ let write_to_file filename =
let r = { origin = origin; let r = { origin = origin;
dir = Vec3.add lower_left_corner (Vec3.add (Vec3.mul u horizontal) (Vec3.mul v vertical)) } in dir = Vec3.add lower_left_corner (Vec3.add (Vec3.mul u horizontal) (Vec3.mul v vertical)) } in
color := Vec3.add !color (get_color r); color := Vec3.add !color (get_color world r);
done; done;