Skip to content

New app: Noise #2467

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

New app: Noise #2467

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions apps/noise/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
# Noise

Pleasing visuals of colorful, generated Simplex noise.

<img src="./noise.gif" width="640" height="320">

Configurable `Foreground`, `Background`, `Scale`, `Speed`, and an optional `Random Seed` to generate a new pattern.

6 changes: 6 additions & 0 deletions apps/noise/manifest.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
---
id: noise
name: Noise
summary: Animated digital noise
desc: Set the vibe with beautiful, complex, colorful animated noise produced with math!
author: rektdeckard
264 changes: 264 additions & 0 deletions apps/noise/noise.star
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,264 @@
"""
Applet: Noise
Summary: Animated digital noise
Description: Set the vibe with beautiful, complex, colorful animated noise produced with math!
Author: rektdeckard
"""

load("math.star", "math")
load("render.star", "render")
load("schema.star", "schema")

SCALE = 20
SPEED = 1 / 30
HUE = "#4040A0"
FRAMES = 48
FRAMES_PER_VIEW = 1

def get_schema():
scale_options = [
schema.Option(display = "Small", value = "10"),
schema.Option(display = "Medium", value = "20"),
schema.Option(display = "Large", value = "40"),
]

speed_options = [
schema.Option(display = "Slow", value = "60"),
schema.Option(display = "Normal", value = "30"),
schema.Option(display = "Fast", value = "10"),
]

return schema.Schema(
version = "1",
fields = [
schema.Color(
id = "fg",
name = "Foreground",
desc = "Hue of the noise.",
icon = "sprayCan",
default = HUE,
),
schema.Color(
id = "bg",
name = "Background",
desc = "The base color.",
icon = "sprayCan",
default = "#000000",
),
schema.Dropdown(
id = "scale",
name = "Scale",
desc = "The relative size of the noise pattern.",
icon = "ruler",
default = scale_options[1].value,
options = scale_options,
),
schema.Dropdown(
id = "speed",
name = "Speed",
desc = "The relative speed of the noise pattern.",
icon = "gaugeHigh",
default = speed_options[1].value,
options = speed_options,
),
schema.Text(
id = "seedval",
name = "Random Seed",
desc = "A string to seed the noise generator (alphanumeric only, no spaces).",
icon = "dice",
default = "amanaplanacanalpanama",
),
],
)

PERMUTATION = [151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250, 124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9, 129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145, 235, 249, 14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72, 243, 141, 128, 195, 78, 66, 215, 61, 156, 180]

GRAD_3 = [[1.0, 1.0, 0.0], [-1.0, 1.0, 0.0], [1.0, -1.0, 0.0], [-1.0, -1.0, 0.0], [1.0, 0.0, 1.0], [-1.0, 0.0, 1.0], [1.0, 0.0, -1.0], [-1.0, 0.0, -1.0], [0.0, 1.0, 1.0], [0.0, -1.0, 1.0], [0.0, 1.0, -1.0], [0.0, -1.0, -1.0]]

F2 = 0.5 * (math.sqrt(3) - 1)
G2 = (3 - math.sqrt(3)) / 6
F3 = 1 / 3
G3 = 1 / 6

def grad_dot2(grad, a, b):
return grad[0] * a + grad[1] * b

def grad_dot3(grad, a, b, c):
return grad[0] * a + grad[1] * b + grad[2] * c

def lerp(mn, mx, v):
return (mn + (mx - mn) * v)

def flatten(iter):
list = []
if type(iter) != "list":
list.append(iter)
else:
for it in iter:
if type(it) != "list":
list.append(it)
else:
list.extend(flatten(it))
return list

def mirror(iter):
list = []
ct = len(iter)
for idx in range(ct):
list.append(iter[ct - idx - 1])
list.extend(iter)
return list

def main(config):
perm = [0 for x in range(512)]
grads = [0 for x in range(512)]

def reseed(seed):
if seed > 0 and seed < 1:
seed *= 655536
se = math.floor(seed)
if se < 256:
se |= se << 8
for i in range(256):
v = 0
if i & 1:
v = PERMUTATION[i] ^ (se & 255)
else:
v = PERMUTATION[i] ^ ((se >> 8) & 255)
perm[i + 256] = v
perm[i] = v
grads[i + 256] = GRAD_3[v % 12]
grads[i] = grads[i + 256]

def simp(x, y, z):
s = (x + y + z) * F3
i = math.floor(x + s)
j = math.floor(y + s)
k = math.floor(z + s)
t = (i + j + k) * G3
x0 = x - i + t
y0 = y - j + t
z0 = z - k + t
i1 = 0
j1 = 0
k1 = 0
i2 = 0
j2 = 0
k2 = 0
if x0 > y0:
if y0 > z0:
i1 = 1
j1 = 0
k1 = 0
i2 = 1
j2 = 1
k2 = 0
elif x0 > z0:
i1 = 1
j1 = 0
k1 = 0
i2 = 1
j2 = 0
k2 = 1
else:
i1 = 0
j1 = 0
k1 = 1
i2 = 1
j2 = 0
k2 = 1
elif y0 < z0:
i1 = 0
j1 = 0
k1 = 1
i2 = 0
j2 = 1
k2 = 1
elif x0 < z0:
i1 = 0
j1 = 1
k1 = 0
i2 = 0
j2 = 1
k2 = 1
else:
i1 = 0
j1 = 1
k1 = 0
i2 = 1
j2 = 1
k2 = 0
x1 = x0 - i1 + G3
y1 = y0 - j1 + G3
z1 = z0 - k1 + G3
x2 = x0 - i2 + 2 * G3
y2 = y0 - j2 + 2 * G3
z2 = z0 - k2 + 2 * G3
x3 = x0 - 1 + 3 * G3
y3 = y0 - 1 + 3 * G3
z3 = z0 - 1 + 3 * G3
ii = math.floor(i) & 255
jj = math.floor(j) & 255
kk = math.floor(k) & 255
gi0 = grads[ii + perm[jj + perm[kk]]]
gi1 = grads[ii + i1 + perm[jj + j1 + perm[kk + k1]]]
gi2 = grads[ii + i2 + perm[jj + j2 + perm[kk + k2]]]
gi3 = grads[ii + 1 + perm[jj + 1 + perm[kk + 1]]]
t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0
if t0 < 0.0:
n0 = 0.0
else:
t0 *= t0
n0 = t0 * t0 * grad_dot3(gi0, x0, y0, z0)
t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1
if t1 < 0.0:
n1 = 0.0
else:
t1 *= t1
n1 = t1 * t1 * grad_dot3(gi1, x1, y1, z1)
t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2
if t2 < 0.0:
n2 = 0.0
else:
t2 *= t2
n2 = t2 * t2 * grad_dot3(gi2, x2, y2, z2)
t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3
if t3 < 0.0:
n3 = 0.0
else:
t3 *= t3
n3 = t3 * t3 * grad_dot3(gi3, x3, y3, z3)
return 32 * (n0 + n1 + n2 + n3)

def color_for_pixel(x, y, t, scale, speed, c):
b = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"]
val = simp(x / scale, y / scale, t * (1.0 / speed))
val = math.floor((val + 1) * 128)
h = (val & 0xF0) >> 4
l = val & 0x0F
return c + b[h] + b[l]

fg = config.str("fg", HUE)
bg = config.str("bg", "#000000")
scale = int(config.str("scale", "20"))
speed = int(config.str("speed", "30"))
seedval = int(config.str("seedval", "coolbeans"), 36)

reseed(seedval)

return render.Root(
child = render.Stack(
children = [
render.Box(color = bg),
render.Animation(
children = mirror(flatten([
[render.Column([
render.Row([render.Box(color = color_for_pixel(x, y, t, scale, speed, fg), width = 1, height = 1) for x in range(64)])
for y in range(32)
])] * FRAMES_PER_VIEW
for t in range(FRAMES)
])),
),
],
),
)
Loading