90 lines
2.4 KiB
Lua
90 lines
2.4 KiB
Lua
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local tv = get_trigger_variable(1)
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if tv == nil then return end
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local lux = tv.integer
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if lux == nil then return end
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if lux < 0 then lux = 0 end
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if lux > 200000 then lux = 200000 end
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lux_value = lux
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if lux_link_on == nil then lux_link_on = true end
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if not lux_link_on then return end
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if lux_poll_s == nil then lux_poll_s = 1 end
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local okt, now = pcall(function() return os.time() end)
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if okt and now ~= nil then
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if lux_last_adj ~= nil and now - lux_last_adj < lux_poll_s then return end
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lux_last_adj = now
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else
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lux_tick = (lux_tick or 0) + 1
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if lux_tick % lux_poll_s ~= 0 then return end
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end
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if lux_fade == nil then lux_fade = 1.0 end
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if lux_deadband == nil then lux_deadband = 1 end
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if lux_target == nil then lux_target = 500 end
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local TARGET_LUX = lux_target
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local DEADBAND = lux_deadband
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local MIN_LEVEL = 0.05
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local MAX_LEVEL = 1.0
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local STEP_MAX = 0.20
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local ok, grp = pcall(get_group, 0)
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if not ok or grp == nil then
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ok, grp = pcall(get_group, 'All Fixtures')
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end
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if not ok or grp == nil then return end
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local err = TARGET_LUX - lux
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if lux_prev_cmd ~= nil and lux_prev_cur ~= nil and lux_prev_lux ~= nil then
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local dl = lux_prev_cmd - lux_prev_cur
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local clamped = (lux_prev_cmd <= MIN_LEVEL + 0.001) or (lux_prev_cmd >= MAX_LEVEL - 0.001)
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if math.abs(dl) > 0.002 and not clamped then
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local ki = (lux - lux_prev_lux) / dl
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if ki > 100 and ki < 10000 then
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if lux_k == nil then
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lux_k = ki
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else
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lux_k = 0.7 * lux_k + 0.3 * ki
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end
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end
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end
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lux_prev_cmd = nil
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end
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if err >= -DEADBAND and err <= DEADBAND then
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lux_last_err = err
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return
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end
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local lv = grp.master_intensity_level
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local hw
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if lv ~= nil and lv.range ~= nil and lv.range > 0 then
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hw = lv.integer / lv.range
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end
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local cur = lux_cur_level
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if cur == nil or (hw ~= nil and math.abs(hw - cur) > 0.05) then
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cur = hw or 0.5
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end
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local k = lux_k or 500
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local delta = err / k
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if lux_last_err ~= nil and (err > 0) ~= (lux_last_err > 0) then
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delta = delta * 0.5
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end
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lux_last_err = err
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if delta > STEP_MAX then delta = STEP_MAX end
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if delta < -STEP_MAX then delta = -STEP_MAX end
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local new = cur + delta
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if new < MIN_LEVEL then new = MIN_LEVEL end
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if new > MAX_LEVEL then new = MAX_LEVEL end
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lux_prev_cur = cur
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lux_prev_cmd = new
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lux_prev_lux = lux
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lux_cur_level = new
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grp:set_master_intensity(new, lux_fade)
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