kopia lustrzana https://github.com/jameshball/osci-render
39 wiersze
1.0 KiB
Lua
39 wiersze
1.0 KiB
Lua
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local X_SIZE = 0.35
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local STEM_WIDTH = 0.05
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local Y_SIZE = 0.02
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local HEIGHT = 2.0
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local OFFSET_Y = -1.0
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local LOOPS = 50
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local SHROOMS = 3 -- can be 1-4
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local MOVE_AMOUNT = 0.4
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local MOVE_FREQ = 0.3
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local SPREAD = 0.2
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local railroad_switch = SHROOMS * phase / (2 * math.pi)
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local drawing_phase = (phase * SHROOMS) % (2 * math.pi)
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local x = X_SIZE * math.cos(LOOPS * drawing_phase)
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local y = Y_SIZE * math.sin(LOOPS * drawing_phase)
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local sawtooth = (drawing_phase % (2 * math.pi)) / (2 * math.pi)
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y = y + (HEIGHT * sawtooth) + OFFSET_Y
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local sine_mod = math.sin(2 * math.pi * sawtooth)
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if sawtooth < 0.75 then
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sine_mod = 1
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x = x * (STEM_WIDTH / X_SIZE)
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end
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x = x * sine_mod
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local base_time = step/sample_rate * MOVE_FREQ
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local current_mushroom = math.floor(railroad_switch)
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local phase_offset = current_mushroom / SHROOMS
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local wiggle = math.sin(2 * math.pi * (sawtooth + base_time + phase_offset)) * sawtooth
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local outer_drift = SPREAD * sawtooth * wiggle
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x = x + (MOVE_AMOUNT * wiggle + outer_drift)
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return {x, y}
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