diff options
| -rw-r--r-- | src/main.zig | 2 | ||||
| -rw-r--r-- | src/rtw/texture.zig | 7 |
2 files changed, 5 insertions, 4 deletions
diff --git a/src/main.zig b/src/main.zig index e2553b5..a0b0fd2 100644 --- a/src/main.zig +++ b/src/main.zig @@ -165,7 +165,7 @@ fn generateTwoSpheres(rng: Random, allocator: anytype) !Hittable { fn generateTwoPerlinSpheres(rng: Random, allocator: anytype) !Hittable { var hittable_objects = ArrayList(Hittable).init(allocator); - const perlin = Texture.makeNoise(rng); + const perlin = Texture.makeNoise(4.0, rng); var mat1 = try allocator.create(Material); var mat2 = try allocator.create(Material); diff --git a/src/rtw/texture.zig b/src/rtw/texture.zig index 63b8f46..cf2b08b 100644 --- a/src/rtw/texture.zig +++ b/src/rtw/texture.zig @@ -29,8 +29,8 @@ pub const Texture = union(TextureTag) { ) }; } - pub fn makeNoise(rng: Random) Texture { - return .{ .noise = .{ .perlin = Perlin.init(rng) } }; + pub fn makeNoise(scale: f64, rng: Random) Texture { + return .{ .noise = .{ .perlin = Perlin.init(rng), .scale = scale } }; } pub fn value(tx: Texture, u: f64, v: f64, p: Vec3) Color { @@ -83,10 +83,11 @@ pub const CheckerTexture = struct { pub const NoiseTexture = struct { perlin: Perlin, + scale: f64, fn value(tx: NoiseTexture, u: f64, v: f64, p: Vec3) Color { _ = u; _ = v; - return rgb(1, 1, 1).mul(tx.perlin.noise(p)); + return rgb(1, 1, 1).mul(tx.perlin.noise(p.mul(tx.scale))); } }; |