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Trying new intensity computations...

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ADAM David Alan Martin
2022-06-04 10:43:09 -04:00
parent 2737fbb288
commit 2a330591cb
1 changed files with 20 additions and 5 deletions
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25
bin/__build_sgr_code
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@ -10,6 +10,9 @@
debug=0 debug=0
boost=128
intensity_threshold=255
# This is the named color map. Just add new entries and they'll be supported... # This is the named color map. Just add new entries and they'll be supported...
declare -A map declare -A map
@ -195,19 +198,31 @@ function rgb_color()
# We probably don't have to compute all the unused color states. We only have to compute # We probably don't have to compute all the unused color states. We only have to compute
# the color state we're signed up for by CSHENV_TERMINAL_COLORS... but whatever... # the color state we're signed up for by CSHENV_TERMINAL_COLORS... but whatever...
# We round up by 128 points of colour, so that if we're above a certain intensity, we get the top # We round up by a bunch of points of colour, so that if we're above a certain intensity, we get the top
# bit set. # bit set.
red_1_bit=$(( ( ( ${red_dec} + 128 ) >> 8 ) & 1 )) red_1_bit=$(( ( ( ${red_dec} + ${boost} ) >> 8 ) & 1 ))
green_1_bit=$(( ( ( ${green_dec} + 128 ) >> 8 ) & 1 )) green_1_bit=$(( ( ( ${green_dec} + ${boost} ) >> 8 ) & 1 ))
blue_1_bit=$(( ( ( ${blue_dec} + 128 ) >> 8 ) & 1 )) blue_1_bit=$(( ( ( ${blue_dec} + ${boost} ) >> 8 ) & 1 ))
intensity_1_bit=0 intensity_1_bit=0
# If we can support an intensity bit, we'll turn that on too... # If we can support an intensity bit, we'll turn that on too...
# But we're going to stop using bold to set the colour "intense" # But we're going to stop using bold to set the colour "intense"
# We'll use the 9x and 10x forms... # We'll use the 9x and 10x forms...
if (( ${red_dec} >= 192 || ${green_dec} >= 192 || ${blue_dec} >= 192 )) if (( ( ${red_dec} + ${green_dec} + ${blue_dec} ) >= 3 * ${intensity_threshold} )) \
|| \
(( ( ${green_dec} + ${blue_dec} ) >= 2 * ${intensity_threshold} )) \
|| \
(( ( ${red_dec} + ${green_dec} ) >= 2 * ${intensity_threshold} )) \
|| \
(( ( ${red_dec} + ${blue_dec} ) >= 2 * ${intensity_threshold} )) \
|| \
(( ${red_dec} >= ${intensity_threshold} )) \
|| \
(( ${green_dec} >= ${intensity_threshold} )) \
|| \
(( ${blue_dec} >= ${intensity_threshold} ))
then then
intensity_1_bit=1 intensity_1_bit=1
fi fi