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Merge: Some improvement of benchmarks
[nit.git]
/
examples
/
rosettacode
/
perlin_noise.nit
diff --git
a/examples/rosettacode/perlin_noise.nit
b/examples/rosettacode/perlin_noise.nit
index
a3352da
..
0733bbf
100644
(file)
--- a/
examples/rosettacode/perlin_noise.nit
+++ b/
examples/rosettacode/perlin_noise.nit
@@
-33,9
+33,9
@@
class ImprovedNoise
# Noise value in [-1..1] at 3d coordinates `x, y, z`
fun noise(x, y, z: Float): Float
do
# Noise value in [-1..1] at 3d coordinates `x, y, z`
fun noise(x, y, z: Float): Float
do
- var xx = x.to_i.bin_and(255)
- var yy = y.to_i.bin_and(255)
- var zz = z.to_i.bin_and(255)
+ var xx = x.to_i & 255
+ var yy = y.to_i & 255
+ var zz = z.to_i & 255
x -= x.floor
y -= y.floor
x -= x.floor
y -= y.floor
@@
-65,10
+65,10
@@
class ImprovedNoise
# Value at a corner of the grid
fun grad(hash: Int, x, y, z: Float): Float
do
# Value at a corner of the grid
fun grad(hash: Int, x, y, z: Float): Float
do
- var h = hash.bin_and(15)
+ var h = hash & 15
var u = if h < 8 then x else y
var v = if h < 4 then y else if h == 12 or h == 14 then x else z
var u = if h < 8 then x else y
var v = if h < 4 then y else if h == 12 or h == 14 then x else z
- return (if h.is_even then u else -u) + (if h.bin_and(2) == 0 then v else -v)
+ return (if h.is_even then u else -u) + (if h & 2 == 0 then v else -v)
end
end
end
end