tailieunhanh - 3ds max Lighting phần 2

có khả năng sẽ gửi ra thời gian qua mái nhà . Một lưu ý cuối cùng về nội thất và ngoại thất ánh sáng: Khi chúng ta nói về các nguồn bên ngoài, chúng ta thường đề cập đến "tự nhiên" như ánh nắng mặt trời. Trong khi thảo luận về các nguồn nội thất, chúng ta thường đề cập đến "nhân tạo" nguồn như bóng đèn. | What Where When 3ds max is equipped with a robust and full-featured lighting toolkit to help you mimic all the lighting events in the scene without having to create a physically accurate lighting model which while it may look marginally superior will likely send render times through the roof. One last note about interior and exterior lighting When we talk about exterior sources we are usually referring to natural sources such as the sun. While discussing interior sources we are usually referring to artificial sources such as lightbulbs. Of course sunlight can pass through a window into a room and tiki lamps or neon signs are usually found outdoors but don t be confused. Don t start arguments with your friends about the technical differences in definitions. I d hate to be the cause of a lifelong friendship breaking up. Worry not By the time you are finished with this book you ll know how to create a neon source whether indoors or outdoors and how to create a sunny day whether on the beach or viewed through a tiny basement window. Just remember to think about whether your camera is interior or exterior and the sources will fall into place. Time of Day Figure A nighttime lighting environment Figure A daytime lighting environment What time of day is it Is it midday or sunset Is it midnight or early morning Each of these situations requires a completely different lighting solution. Midday might require a bright hard-shadowed light source at a high angle to represent direct sunlight while sunset might also require a hard-shadowed light source but with less intensity more color 23 Chapter 2 saturation and a much more obtuse angle or direction. Early morning could mean the sun has not yet risen so all the light in the scene is indirect diffused and colored according to atmospheric conditions. Midnight on the other hand might be lit by the moon which acts as a direct lighting source although it is in fact a diffuse reflected source and displays the properties of .

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