mirror of
https://github.com/clockworkpi/PicoCalc.git
synced 2026-03-19 18:42:38 +01:00
51 lines
956 B
Lua
51 lines
956 B
Lua
-- Bubble Universe
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-- inspired by https://forum.clockworkpi.com/t/bubble-universe/19907
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local w = 320
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local w2 = w/2
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local rad = 70
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local n = 20
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local nc = 120
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local step = 2
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local r = math.pi*2/n
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local x,y,t = 0,0,6
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local u,v,px,py
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local res = 100
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local sint = {}
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for i = 1, math.floor(math.pi*2*res) do
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sint[i] = math.sin(i/res)
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end
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local function fsin(i)
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return sint[(math.floor(i*res)%#sint)+1]
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end
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local function fcos(i)
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return sint[((math.floor((math.pi/2-i)*res))%#sint)+1]
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end
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draw.enableBuffer(2)
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while true do
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if keys.getState(keys.esc) then break end
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draw.clear()
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for i = 0, n-1 do
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for c = 0, nc-1, step do
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u = fsin(i+y)+fsin(r*i+x)
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v = fcos(i+y)+fcos(r*i+x)
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x = u + t
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y = v
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px = u * rad + w2
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py = y * rad + w2
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draw.point(px, py,
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--draw.rectFill(px, py, 2, 2,
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colors.fromRGB(math.floor(63+i/n*192),
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math.floor(63+c/nc*192),168))
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end
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end
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t=t+0.02
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draw.blitBuffer()
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end
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draw.enableBuffer(false)
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