The viewing frustum has an origin (0,0) at the center of the screen, while screen coordinates have an origin at the upper left of the screen.是什么意思_The viewing frustum has an origin (0,0) at the center of the screen, while screen coordinates have an origin at the upper left of the screen.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句