Method set_viewport

imagepy/core/myvi/manager.py:242–244

(self, x, y, width, height)

		self.mvp = (lookat, proj)
		
	def set_viewport(self, x, y, width, height):
		self.ctx.viewport = (x, y, width, height)
		self.ratio = width*1.0/height

	def set_background(self, rgb): self.background = rgb