Those diagrams are ridiculous. The sun's light does not work like that in the ball Earth model. On the ball Earth you can not even see the whole sun. Only that part of light that hits the Earth is seen, about the same size as the Earth coming in at straight line energy. The energy radiates out from the Sun like a radio wave, or rays. It is an ever expanding orb of energy. When it reaches Earth it is a ball 93,000,000 miles in diameter. That part that is not directed at Earth is not visible. You can not see light that is not shinning on you, same for the Earth.