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Implemented image:scaledImage() and image:copy() #71

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Implemented image:scaledImage() and image:copy() #71

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2aa7e89
implemented image:copy() and image:scaledImage()
Feb 2, 2026
5a3f53d
fixed drawing functions to support scaled images
Feb 2, 2026
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57 changes: 40 additions & 17 deletions playdate/image.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -28,11 +28,22 @@ function meta:load(path)
end

function meta:copy()
error("[ERR] playdate.graphics.image:copy() is not yet implemented.")
local img = setmetatable({}, meta)
img.data = self.data
img.sx = self.sx
img.sy = self.sy
return img
end

function meta:getSize()
return self.data:getWidth(), self.data:getHeight()
local w, h = self.data:getWidth(), self.data:getHeight()

if self.sx then
w = math.floor(w * self.sx)
h = math.floor(h * self.sy)
end

return w, h
end

function module.imageSizeAtPath(path)
Expand All @@ -50,8 +61,7 @@ function meta:draw(x, y, flip, qx, qy, qw, qh)
local sx = 1
local sy = 1
if flip then
local w = self.data:getWidth()
local h = self.data:getHeight()
local w, h = self:getSize()
if flip == playdate.graphics.kImageFlippedX then
sx = -1
x = x + w
Expand All @@ -65,12 +75,16 @@ function meta:draw(x, y, flip, qx, qy, qw, qh)
y = y + h
end
end

if qx and qy and qw and qh then
local w, h = self:getSize()
playbit.graphics.quad:setViewport(qx, qy, qw, qh, w, h)
love.graphics.draw(self.data, playbit.graphics.quad, x, y, sx, sy)
love.graphics.draw(self.data, playbit.graphics.quad, x, y, 0, sx, sy)
else
if self.sx then
sx = sx * self.sx
sy = sy * self.sy
end
love.graphics.draw(self.data, x, y, 0, sx, sy)
end

Expand Down Expand Up @@ -103,18 +117,17 @@ function meta:drawRotated(x, y, angle, scale, yscale)
love.graphics.setColor(1, 1, 1, 1)

-- playdate.image.drawRotated() draws the texture centered, so emulate that
love.graphics.push()
local w = self.data:getWidth() * 0.5
local h = self.data:getHeight() * 0.5

-- using fractional numbers will cause jitter and artifacting
w = math.floor(w)
h = math.floor(h)

love.graphics.translate(x, y)
love.graphics.rotate(math.rad(angle))
love.graphics.draw(self.data, -w, -h)
love.graphics.pop()
local sx = self.sx or 1
local sy = self.sy or 1

love.graphics.draw(self.data, x, y, math.rad(angle), sx, sy, w, h)

love.graphics.setColor(r, g, b, 1)
playbit.graphics.updateContext()
Expand All @@ -131,18 +144,28 @@ function meta:drawScaled(x, y, scale, yscale)
local r, g, b = love.graphics.getColor()
love.graphics.setColor(1, 1, 1, 1)

love.graphics.push()
love.graphics.translate(x, y)
love.graphics.scale(scale, yscale)
love.graphics.draw(self.data, 0, 0)
love.graphics.pop()
local sx = self.sx or 1
local sy = self.sy or 1

sx = sx * scale
sy = sy * (yscale or scale)

love.graphics.draw(self.data, x, y, 0, sx, sy)

love.graphics.setColor(r, g, b, 1)
playbit.graphics.updateContext()
end

function meta:scaledImage(scale, yscale)
error("[ERR] playdate.graphics.image:scaledImage() is not yet implemented.")
local img = self:copy()

local sx = img.sx or 1
local sy = img.sy or 1

img.sx = sx * scale
img.sy = sy * (yscale or scale)

return img
end


Expand Down