ddocg Posted October 8, 2003 Share Posted October 8, 2003 Can someone explain to me the basics of lighting. I draw in Autocad and was wondering if i need to represent a physical light fitting, which would be used by max. I have drawn fluorescent light tubes underneath a glass floor. At final render the light is not represented. If anyone can point me in the direction of some tutorials this would be greatly appreciated. David. Link to comment Share on other sites More sharing options...
Fran Posted October 8, 2003 Share Posted October 8, 2003 Hi David, Just in case this isn't obvious (and sometimes I forget), make sure your flo. tube geometry doesn't cast shadows (in Object Properties, both in General and Radiosity tabs). Okay. Then you'll want your tubes to glow. Create a material that has Self-illumination enabled and has Ambient and Diffuse set to pure white. For the light itself, I'd use one of the photometric presets for 4-ft flo. Another option would be to use a Radiosity Override material and jack the luminance scale way up. It depends on the look you're after, but I think shadows from a self-emitter can't be raytraced, so they won't be sharp. Any idea what happened to your previous thread about Lighting? Link to comment Share on other sites More sharing options...
ddocg Posted October 9, 2003 Author Share Posted October 9, 2003 Good morning Fran and thanks for the reply, I will try your advice later on today as i have been a little busy with drawings for work. My posts have been moved into 3DS Max forum by the moderator, so i will start posting in here from now on, again thank you for your help with Max. David. Link to comment Share on other sites More sharing options...
ddocg Posted October 9, 2003 Author Share Posted October 9, 2003 Hi Fran, I have tried your advice and i am seeing some changes to my light though unfortunately it is not right. First, when you said about using a photometric preset, I am lost as to where i would find this preset light. After following your advice about switching off cast shadows in object properties for both general and advanced lighting tabs and preparing a self illuminating colour with ambient and diffuse set to pure white and then applying this to my tube i then selected a free area light and selected the tube, in the perspective viewport i can see the light reflecting on the wall and i can see it change when i make alterations in the modify tab this is all great, my problem is when i render the perspective viewport the finished result shows just a plain white tube, I am obviously missing a setting somewhere and hopefully you can advise on this. David. Link to comment Share on other sites More sharing options...
ddocg Posted October 9, 2003 Author Share Posted October 9, 2003 I have included 2 screenshots 1 is a copy of the render and the other is the perspective view. i would appreciate any comments regarding the lack of light on the render. http://www.cgarchitect.com/forum/filepush.asp?file=Untitled-3copy.jpg http://www.cgarchitect.com/forum/filepush.asp?file=Untitled-1copy_1.jpg Link to comment Share on other sites More sharing options...
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