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https://github.com/Mjokfox/color_picker.git
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1c1f7ae464
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1c1f7ae464 | ||
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b69064891d |
1 changed files with 105 additions and 14 deletions
119
init.lua
119
init.lua
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@ -3,7 +3,7 @@ local width = 64
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local height = 64;
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local max_value = 15
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local saturation = 0;
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local mapping_type_index = "1"
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local mapping_type_index = "2"
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local dropdown_index = "3"
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local bars = {"0","100","50"}
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local fs = {}
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@ -66,8 +66,54 @@ local function hsv_to_rgb(h, s, v)
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return math.floor(r * max_value), math.floor(g * max_value), math.floor(b * max_value)
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end
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-- magic oklab stuff
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local function lch_to_lab(L, C, h)
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local a = C * math.cos(h * math.pi / 180)
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local b = C * math.sin(h * math.pi / 180)
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return L, a, b
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end
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-- magic oklab stuff
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local function oklab_to_linear_srgb(L, a, b)
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local l_ = (L + 0.3963377774 * a + 0.2158037573 * b) ^ 3
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local m_ = (L - 0.1055613458 * a - 0.0638541728 * b) ^ 3
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local s_ = (L - 0.0894841775 * a - 1.2914855480 * b) ^ 3
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local r = 4.0767416621 * l_ - 3.3077115913 * m_ + 0.2309699292 * s_
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local g = -1.2684380046 * l_ + 2.6097574011 * m_ - 0.3413193965 * s_
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local b = -0.0041960863 * l_ - 0.7034186147 * m_ + 1.7076147010 * s_
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return r, g, b
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end
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-- magic oklab stuff
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local function linear_to_srgb(x)
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if x <= 0.0031308 then
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return 12.92 * x
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else
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return 1.055 * x^(1/2.4) - 0.055
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end
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end
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-- magic oklab stuff
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local function lch_to_rgb(L, C, h)
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local r, g, b = oklab_to_linear_srgb(lch_to_lab(L, C, h))
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r = linear_to_srgb(r)
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g = linear_to_srgb(g)
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b = linear_to_srgb(b)
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return math.floor(r * max_value), math.floor(g * max_value), math.floor(b * max_value)
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end
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-- helper function
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local function toHex(decimal)
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if (decimal < 0) then
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decimal = 0
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end
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if (decimal > max_value) then
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decimal = max_value
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end
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local hex = string.format("%01x", decimal)
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return hex
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end
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@ -87,13 +133,18 @@ local function assemble_sliders(x,y,w,h)
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else if (dropdown_index == "3") then
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labels[3] = "L"
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r,g,b = hsl_to_rgb(bars[1]/360,bars[2]/100,bars[3]/100)
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else if (dropdown_index == "4") then
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labels = {"L","C","h"}
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maxs = {100,100,360}
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units = {"%%","%%","\u{00B0}"}
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r,g,b = lch_to_rgb(bars[1]/100,bars[2]/100,bars[3])
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else
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labels = {"R","G","B"}
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units = {"","",""}
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maxs = {15,15,15}
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steps = {1,1,1}
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r,g,b = tonumber(bars[1]),tonumber(bars[2]),tonumber(bars[3])
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end end
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end end end
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local hexr,hexg,hexb = toHex(r),toHex(g),toHex(b)
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-- preview color
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buf[#buf + 1] = "label[".. x + w/3 ..",".. y + h/1.5 ..";click me!]"
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@ -121,9 +172,10 @@ end
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local function Assemble_Map(x_off,y_off)
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local buf = {}
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buf[#buf + 1] = "label[".. x_off + 2 ..",".. y_off + 0.5 ..";click any color!]"
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local label = "saturation"
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if (dropdown_index == "4") then label = "chroma" end
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if (dropdown_index ~= "1") then
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buf[#buf + 1] = "label[".. x_off + 6.6 ..",".. y_off + 0.5 ..";saturation]"
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buf[#buf + 1] = "label[".. x_off + 6.6 ..",".. y_off + 0.5 ..";".. label .."]"
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y_off=y_off+1
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-- saturation slider
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buf[#buf + 1] = "scrollbaroptions[min=0;max=10;smallstep=1;largestep=3]"
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@ -133,23 +185,62 @@ local function Assemble_Map(x_off,y_off)
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end
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-- full map
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local size = 0.1
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for x = 0,width-1 do
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for y = 0,height-1 do
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local y_axis,x_axis = "lightness","hue"
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local hexr,hexg,hexb
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local ohexr,ohexg,ohexb
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local temp_width = 1;
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local old_x = 0;
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local map_optimization = true;
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for y = 0,height-1 do
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for x = 0,width-1 do
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-- set r,g,b using the selected mapping method
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local r,g,b = 0,0,0;
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if (dropdown_index == "2") then
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y_axis,x_axis = "value","hue"
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r,g,b = hsv_to_rgb(x / width,1-saturation/10,(height-y) / height)
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else if (dropdown_index == "3") then
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r,g,b = hsl_to_rgb(x / width,1-saturation/10,(height-y) / height)
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else if (dropdown_index == "4") then
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y_axis = "p lightness"
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r,g,b = lch_to_rgb((height-y) / height, 1-saturation/10, 360*(x / width))
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else
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y_axis,x_axis = "",""
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r,g,b = math.floor(x/(width/4))+math.floor(y/(width/4))*(width/16),y%16,x%16
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end end
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local hexr,hexg,hexb = toHex(r),toHex(g),toHex(b)
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-- use hexcol mod to display the buttons as their blocks
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buf[#buf + 1] = "item_image_button[".. x*size + x_off + 0.0001 ..",".. y*size + y_off + 0.0001 ..";"..size..","..size..";hexcol:".. hexr .. hexg .. hexb ..";hexcol:".. hexr .. hexg .. hexb ..";]"
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end end end
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hexr,hexg,hexb = toHex(r),toHex(g),toHex(b)
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if (x==0) then
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ohexr,ohexg,ohexb = hexr,hexg,hexb
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end
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if (map_optimization) then
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if (ohexr == hexr and ohexg == hexg and ohexb == hexb) then
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temp_width = temp_width + 1
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if (temp_width == 2) then old_x = x end
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else
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-- use hexcol mod to display the buttons as their blocks
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if temp_width == 1 then
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old_x = x
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end
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buf[#buf + 1] = "item_image_button[".. old_x*size + x_off + 0.0001 ..",".. y*size + y_off + 0.0001 ..";"..size*temp_width..","..size..";hexcol:".. ohexr .. ohexg .. ohexb ..";hexcol:".. ohexr .. ohexg .. ohexb ..";]"
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temp_width = 1
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old_x = x;
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end
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ohexr,ohexg,ohexb = hexr,hexg,hexb
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else
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buf[#buf + 1] = "item_image_button[".. x*size + x_off + 0.0001 ..",".. y*size + y_off + 0.0001 ..";"..size..","..size..";hexcol:".. hexr .. hexg .. hexb ..";hexcol:".. hexr .. hexg .. hexb ..";]"
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end
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end
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if (map_optimization) then
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if (temp_width>1) then
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buf[#buf + 1] = "item_image_button[".. old_x*size + x_off + 0.0001 ..",".. y*size + y_off + 0.0001 ..";"..size*(temp_width-1)..","..size..";hexcol:".. ohexr .. ohexg .. ohexb ..";hexcol:".. ohexr .. ohexg .. ohexb ..";]"
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temp_width = 1;
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end
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end
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end
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buf[#buf + 1] = "vertlabel[".. x_off-0.3 ..",".. y_off + (height*size)/(string.len(y_axis)/1.3) ..";".. y_axis .."]"
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buf[#buf + 1] = "label[".. x_off + (width*size)/(string.len(x_axis)/1.3) ..",".. y_off+(height*size)+0.3 ..";".. x_axis .."]"
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return buf
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end
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@ -168,7 +259,7 @@ local function assemble_colorspace()
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"size[10.7,14]",
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"padding[0.05, 0.05]",
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"dropdown[2,0.3;3,0.7;mapping_type;map,sliders;" .. mapping_type_index ..";true]" ,
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"dropdown[5.5,0.3;3,0.7;color_space;rgb,hsv,hsl;" .. dropdown_index ..";true]" ,
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"dropdown[5.5,0.3;3,0.7;color_space;rgb,hsv,hsl,Oklab;" .. dropdown_index ..";true]" ,
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"container[1,1]"
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}
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local x_off,y_off = 1,0
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@ -200,10 +291,10 @@ minetest.register_craftitem("color_picker:picker", {
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-- register button in inventory
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if unified_inventory then
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unified_inventory.register_button("hexcol_picker", {
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unified_inventory.register_button("color_picker:picker", {
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type = "image",
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image = "cspace.png",
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tooltip = "Colour Picker",
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tooltip = "Color Picker",
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action = function (player)
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color_picker.show_formspec(player)
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end,
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