mirror of
https://github.com/brmlab/ledbar.git
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74 lines
1.8 KiB
Python
Executable file
74 lines
1.8 KiB
Python
Executable file
#!/usr/bin/python
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from __future__ import print_function
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from ledbar import Ledbar
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import math, time
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import sys
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WIDTH = 4
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HEIGHT = 5
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PIXELS = 20
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def lint(x, points, values):
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assert(len(points) == len(values))
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for i in range(len(points)-1):
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if x > points[i+1]:
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continue
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width = points[i+1] - points[i]
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assert(width > 0)
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t = (x - points[i]) / width
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t_1 = 1.0 - t
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return values[i]*t_1 + values[i+1]*t
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return values[len(values)-1]
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# Correction values
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corr_r_p = [0.0, 0.5, 0.7, 0.9, 1.0]
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corr_r_v = [0.0, 0.05, 0.15, 0.45, 1.0]
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corr_g_p = [0.0, 0.55, 0.9, 1.0]
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corr_g_v = [0.0, 0.08, 0.2, 1.0]
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corr_b_p = [0.0, 0.6, 0.75, 1.0]
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corr_b_v = [0.0, 0.13, 0.18, 1.0]
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def set_pixel_2d(bar, x, y, r, g, b):
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bar.set_pixel(WIDTH - x - 1 + y*WIDTH, r, g, b)
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def combine(*fncs):
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return lambda *args: reduce(
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id,
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reduce(
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lambda acc,fnc:(fnc(*acc),),
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reversed(fncs),
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args)
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)
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def flip(f):
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return lambda *a: f(*reversed(a))
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def cdist(center, point, scale):
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from operator import add,sub
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from math import sqrt
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from functools import partial
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return scale*sqrt(reduce(add, map(combine(partial(flip(pow),2),sub),center,point)))
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l = Ledbar(PIXELS)
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M = max(WIDTH, HEIGHT)
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center_b = [0,0]
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work = True
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t = 0
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while work:
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center_r = [math.sin(t)*(M/2)+WIDTH/2-1, math.cos(t)*(M/2)+HEIGHT/2-1]
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center_g = [math.sin(t*0.53234)*(M/2)+WIDTH/2-1, HEIGHT/2-1]
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print ("red: ", center_r[0], center_r[1], " green: ", center_g[0], center_g[1], end = " \r", file = sys.stderr)
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for x in range(WIDTH):
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for y in range(HEIGHT):
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r = cdist(center_r, [x,y], 0.2)
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r = lint(r, corr_r_p, corr_r_v)
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g = cdist(center_g, [x,y], 0.2)
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g = lint(g, corr_g_p, corr_g_v)
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set_pixel_2d(l, x, y, r, g, 0)
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work = l.update()
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t += 0.01
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