Palette

local palette = Palette(16)
local defaultPalette = Palette()  -- 256 colors

local copy = Palette(originalPalette)

local palette = Palette{ fromFile="palette.gpl" }

local palette = Palette{ fromResource="DB32" }

palette:resize(32)

local color = palette:getColor(0)
print("First color:", color.red, color.green, color.blue)

palette:setColor(0, Color{ r=255, g=0, b=0 })
palette:setColor(1, Color{ r=0, g=255, b=0 })

palette:saveAs("my-palette.gpl")

local size = #palette
print("Palette has", size, "colors")

local palette = Palette(8)

-- Set colors
palette:setColor(0, Color{ r=0, g=0, b=0 })         -- Black
palette:setColor(1, Color{ r=255, g=255, b=255 })   -- White
palette:setColor(2, Color{ r=255, g=0, b=0 })       -- Red
palette:setColor(3, Color{ r=0, g=255, b=0 })       -- Green
palette:setColor(4, Color{ r=0, g=0, b=255 })       -- Blue
palette:setColor(5, Color{ r=255, g=255, b=0 })     -- Yellow
palette:setColor(6, Color{ r=255, g=0, b=255 })     -- Magenta
palette:setColor(7, Color{ r=0, g=255, b=255 })     -- Cyan

local sprite = Sprite(32, 32, ColorMode.INDEXED)
sprite:setPalette(palette)

local palette = Palette(256)

for i=0,255 do
  local t = i / 255
  palette:setColor(i, Color{
    r = math.floor(t * 255),
    g = math.floor((1-t) * 255),
    b = 128
  })
end

palette:saveAs("gradient.gpl")

local sprite = app.sprite
local palette = sprite.palettes[1]

print("Palette size:", #palette)

-- Modify palette
for i=0,#palette-1 do
  local color = palette:getColor(i)
  -- Darken all colors
  color.hsvValue = color.hsvValue * 0.8
  palette:setColor(i, color)
end

-- Load built-in palette
local db32 = Palette{ fromResource="DB32" }
local sprite = Sprite(64, 64, ColorMode.INDEXED)
sprite:setPalette(db32)

local palette = sprite.palettes[1]

for i=0,#palette-1 do
  local color = palette:getColor(i)
  print(string.format(
    "Color %d: RGB(%d, %d, %d)",
    i, color.red, color.green, color.blue
  ))
end