1 files changed, 45 insertions, 0 deletions
diff --git a/not/Layer.lua b/not/Layer.lua
new file mode 100644
index 0000000..14dac32
--- /dev/null
+++ b/not/Layer.lua
@@ -0,0 +1,45 @@
+--- A little bit more than just a Canvas.
+Layer = require "not.Object":extends()
+
+function Layer:new (width, height)
+	self.canvas = love.graphics.newCanvas(width, height)
+	self.transformScale = getScale()
+	self.transformRatio = 1
+	self.drawScale = 1
+end
+
+function Layer:delete ()
+	self.canvas = nil
+end
+
+--- Sets this layer as current canvas for drawing with love.graphics functions.
+-- @return old canvas used by love
+function Layer:setAsCanvas ()
+	local c = love.graphics.getCanvas()
+	love.graphics.setCanvas(self.canvas)
+	return c
+end
+
+function Layer:renderTo (func, ...)
+	local c = self:setAsCanvas()
+	func(...)
+	love.graphics.setCanvas(c)
+end
+
+function Layer:renderToWith (camera, func, ...)
+	camera:push()
+	camera:transform(self.transformScale, self.transformRatio, self.canvas:getDimensions())
+	self:renderTo(func, ...)
+	camera:pop()
+end
+
+function Layer:clear ()
+	self:renderTo(love.graphics.clear)
+end
+
+function Layer:draw ()
+	love.graphics.setColor(255, 255, 255, 255)
+	love.graphics.draw(self.canvas, nil, nil, nil, self.drawScale, self.drawScale)
+end
+
+return Layer