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Make VU meter symmetrical to center module

This commit is contained in:
Thomas Kolb 2012-07-29 23:45:14 +02:00
parent c15d815da9
commit bac8df287c
1 changed files with 16 additions and 4 deletions
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20
vumeter.lua
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@ -1,5 +1,5 @@
COOLDOWN_FACTOR = 0.9998 COOLDOWN_FACTOR = 0.9998
FACTOR = 0.2 FACTOR = 0.033
num_modules = 20 num_modules = 20
center_module = 10 center_module = 10
@ -44,21 +44,33 @@ function periodic()
local brightness = rms / maxRMS local brightness = rms / maxRMS
for i = 1,num_modules do for i = 1,num_modules do
if i <= num_modules * redEnergy / maxRedEnergy then if i <= center_module and
center_module - i < center_module * redEnergy / maxRedEnergy or
i > center_module and
i - (center_module + 1) < (num_modules-center_module) * redEnergy / maxRedEnergy
then
redTarget = brightness redTarget = brightness
else else
redTarget = 0 redTarget = 0
end end
red[i] = (1 - FACTOR) * red[i] + FACTOR * redTarget; red[i] = (1 - FACTOR) * red[i] + FACTOR * redTarget;
if i <= num_modules * greenEnergy / maxGreenEnergy then if i <= center_module and
center_module - i < center_module * greenEnergy / maxGreenEnergy or
i > center_module and
i - (center_module + 1) < (num_modules-center_module) * greenEnergy / maxGreenEnergy
then
greenTarget = brightness greenTarget = brightness
else else
greenTarget = 0 greenTarget = 0
end end
green[i] = (1 - FACTOR) * green[i] + FACTOR * greenTarget; green[i] = (1 - FACTOR) * green[i] + FACTOR * greenTarget;
if i <= num_modules * blueEnergy / maxBlueEnergy then if i <= center_module and
center_module - i < center_module * blueEnergy / maxBlueEnergy or
i > center_module and
i - (center_module + 1) < (num_modules-center_module) * blueEnergy / maxBlueEnergy
then
blueTarget = brightness blueTarget = brightness
else else
blueTarget = 0 blueTarget = 0