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Submitted on September 13, 2018 at 12:41 PM

New Paste 1 (Lua)

function Spriter:draw( x, y )
	local canvas = self:getCanvas()

	--Only possible to use sprite batch if we used texture packer structure - default is series of disparate images
	if self.usingTexturePacker then
		self.spriteBatch:clear()
		self.spriteBatch:bind()
	end

	local frameData = self:getFrameData()

	--In my engine I had transformations active during rendering
	--I had to re-set everything to origin to render at origin of canvas
	--This should be safe
        love.graphics.push()
	love.graphics.origin()

	--Draw onto off-screen canvas for flipping
	--I'm sure there's an algorithmic solution to flipping the animation, but
	--This was easier to me initially
	--I'm not sure how to cleanly build a bounding rect to create a good canvas size, so I'm just doing screen w/h for now
	--All graphics operations from this point forward render to canvas instead of screen
	love.graphics.setCanvas(canvas)
	--Duh
	love.graphics.clear()

	--I believe this is the default, but in case it's set elsewhere:w
	love.graphics.setBlendMode('alpha')

	--Loop through framedata and render images (bones are also in array)
	for i = 1, # frameData do
		local imageData = frameData[i]
		if imageData.dataType == "image" then
			local x, y = self:spriterToScreen( imageData.x, imageData.y ) 

			love.graphics.setColor(255, 255, 255)

			--Pivot data is stored as 0-1, but actually represents an offset of 0-width or 0-height for rotation purposes
			local pivotX = imageData.pivotX or 0
			local pivotY = imageData.pivotY or 1

			if not self.usingTexturePacker then
				--Rescape pivot data from 0,1 to 0,w/h
				pivotX = rescale( pivotX, 0, 1, 0, imageData.image:getWidth() )
				--Love2D has Y inverted from Spriter behavior -- pivotY is height - pivotY value
				pivotY = imageData.image:getHeight() - rescale( pivotY, 0, 1, 0, imageData.image:getHeight() )
				love.graphics.draw(imageData.image, x, y, -imageData.angle, imageData.scale_x, imageData.scale_y, pivotX, pivotY)
			else
				assert(imageData.tile, "No imageData.tile")
				local w, h = imageData.tile.w, imageData.tile.h
				assert(w and h, "Error getting dimensions of " .. tostring(imageData.tile.fileName))
				pivotX = rescale( pivotX, 0, 1, 0, w )
				--Love2D has Y inverted from Spriter behavior -- pivotY is height - pivotY value
				pivotY = h - rescale( pivotY, 0, 1, 0, h )
				--love.graphics.draw(self.textureAtlas.texture, imageData.tile.quad, x, y, -imageData.angle, imageData.scale_x, imageData.scale_y, pivotX, pivotY)
				self.spriteBatch:add(imageData.tile.quad, x, y, -imageData.angle, imageData.scale_x, imageData.scale_y, pivotX, pivotY)
			end
		end
	end

	--Texturepacker rendering overhead
	if self.usingTexturePacker then
		self.spriteBatch:unbind()
		love.graphics.draw(self.spriteBatch)
	end

	if self:getDebug() then
		self:drawDebugInfo()
	end

	--Turn off canvas.  Graphics operations now apply to screen
	love.graphics.setCanvas()

	-- The rectangle from the Canvas was already alpha blended.
	-- Use the premultiplied blend mode when drawing the Canvas itself to prevent another blending.
	love.graphics.setBlendMode("multiply", 'premultiplied')

	--Return to transformations active prior to our draw
        love.graphics.pop()

	local scaleX, scaleY = self:getScale()
	local xOffset, yOffset = self:getOffset()
	local inversionOffset = self:getInversionOffset()

	x = x + xOffset
	y = y + yOffset

	local canvasOffsetX, canvasOffsetY = self:getCanvasOffset()

	--We offset things in the canvas purely to avoid clipping of the sprite.  If we do so,
	--We have to un-do the offset prior to rendering the canvas
	x = x - (canvasOffsetX * scaleX)
	y = y - (canvasOffsetY * scaleY)

	local inverted = self:getInverted()

	--I'm sure there's a more elegant way to handle this, but I'm being lazy.
	--Handle flips by rendering with -1 x scaling
	if not inverted then
		love.graphics.draw(canvas, x, y, 0, scaleX, scaleY)
	else
		--Need to offset x position due to scaling
		love.graphics.draw(canvas, x + inversionOffset, y, 0, -scaleX, scaleY)
	end

	--Turn default back on
	love.graphics.setBlendMode('alpha')

end --draw