on.draw = function()
				love.graphics.setColor(1,0,0)
				for y=0,1000,100 do
					love.graphics.line(vx(-5),vy(y), vx(5),vy(y))
				end
				for x=0,1000,100 do
					love.graphics.line(vx(x),vy(-5), vx(x),vy(5))
				end
	for _,obj in ipairs(Surface) do
		love.graphics.setColor(obj.r or 0, obj.g or 0, obj.b or 0)
		if obj.type == 'rectangle' then
			love.graphics.rectangle(obj.drawmode or 'fill', vx(obj.x),vy(obj.y), scale(obj.w),scale(obj.h))
		elseif obj.type == 'line' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.zdata = {}
				for i=1,#obj.data,2 do
					table.insert(obj.zdata, vx(obj.data[i]))
					table.insert(obj.zdata, vy(obj.data[i+1]))
				end
			end
			love.graphics.line(unpack(obj.zdata))
		elseif obj.type == 'circle' then
			love.graphics.circle(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radius))
		elseif obj.type == 'arc' then
			love.graphics.arc(obj.drawmode or 'line', obj.arctype or 'open', vx(obj.x), vy(obj.y), scale(obj.radius), obj.angle1, obj.angle2, obj.segments)
		elseif obj.type == 'ellipse' then
			love.graphics.ellipse(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radiusx), scale(obj.radiusy))
		elseif obj.type == 'bezier' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				zdata = {}
				for i=1,#obj.data,2 do
					table.insert(zdata, vx(obj.data[i]))
					table.insert(zdata, vy(obj.data[i+1]))
				end
				obj.zdata = love.math.newBezierCurve(zdata):render()
			end
			love.graphics.line(unpack(obj.zdata))
		elseif obj.type == 'text' then
			local scaled_fontsize = scale(obj.fontsize or 20)
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y or obj.scaled_fontsize ~= scaled_fontsize then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.scaled_fontsize = scaled_fontsize
print('setting font', scaled_fontsize)
				love.graphics.setFont(font(scaled_fontsize))
				obj.text = love.graphics.newText(love.graphics.getFont(), obj.data)
				initialize_editor(obj)
			end
			if obj.w == nil then
				love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
			else
				edit.draw(obj.editor, obj.fg or {r=0,g=0,b=0}, not obj.show_cursor)
			end
		end
	end
end