M_Jaco Posted October 1, 2003 Share Posted October 1, 2003 Hi all I’ve just registered, but I was watching this forum for a while and got a lot of info, thanks all Now, here's my question I just started to try radiosity and this is what I made, but I can't get any shadows in the picture, can some one please help me Thanks http://www.cgarchitect.com/forum/filepush.asp?file=ClassRoom_1.jpg Link to comment Share on other sites More sharing options...
illyrianeye Posted October 1, 2003 Share Posted October 1, 2003 what lights are you using? Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 2, 2003 Share Posted October 2, 2003 Hi! Maybe you should post your light and radiosity settings. Maybe your scene is over exposed, but we can't be sure until you post your settings. [] Rick Link to comment Share on other sites More sharing options...
illyrianeye Posted October 2, 2003 Share Posted October 2, 2003 First, check to see if your shadows are actually on. make sure the box is checked. pick the light source, go to modify panel, and under shadows, check to see if they are on. Link to comment Share on other sites More sharing options...
M_Jaco Posted October 2, 2003 Author Share Posted October 2, 2003 illyrianeye, yes it's on Rick here's my settings, Initial Quality =85% Refine Iterations (All Obj) = 5 Refine Iterations selected Obj = 0 Filtering = 1 Global Subdivision settings = 1' Logarithmic Exposure Control is on Brightness = 75 Contrast=65 Mid Tones=0.5 Physical scale 1500 affect indirect only is checked [ October 02, 2003, 11:57 AM: Message edited by: M_Jaco ] Link to comment Share on other sites More sharing options...
M_Jaco Posted October 2, 2003 Author Share Posted October 2, 2003 Free Area, and for the shadows I used ray traced shadows. Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 2, 2003 Share Posted October 2, 2003 How many lights do you have in there and what are their multipliers? Are you using the "regather" option? [] Rick Link to comment Share on other sites More sharing options...
M_Jaco Posted October 2, 2003 Author Share Posted October 2, 2003 I've got 8 light on the roof, with Intensity of cd 4799,and color D65 white , and an IES Sun and a IES Sky. Thanks so much for trying to help Link to comment Share on other sites More sharing options...
RezMAN Posted October 2, 2003 Share Posted October 2, 2003 Perhaps, try adjusting your materail first. Looks like your using only constant materials, this makes everything look flat... Link to comment Share on other sites More sharing options...
M_Jaco Posted October 2, 2003 Author Share Posted October 2, 2003 Thanks Rezman, That sure helped for the materials, but still no shadows, does anybody have another idea please. Link to comment Share on other sites More sharing options...
Arnel Posted October 2, 2003 Share Posted October 2, 2003 Try to check you model scale. Its very important to check the scale of your model if you are using ies lights it should correspond to real word dimension. Was the model imported from cad program or it is a native max? If it is imported from cad be sure that your cad file unit match with the system unit in max in order that lights give correct illumination and shadows. Hope this helps. Link to comment Share on other sites More sharing options...
LEE Posted October 2, 2003 Share Posted October 2, 2003 YOU HAVE A LOT OF LIGHTS IN THAT SCENE! TRY TURNING OFF ALL BUT ONE SPOT OFF. CHECK THE LIGHT TO MAKE SURE IT IS CASTING SHADOWS CHECK THE PROPERTIES OF THE DESKS AND THE FLOOR TO MAKE SURE THEY CAN CAST AND RECEIVE SHADOWS. Link to comment Share on other sites More sharing options...
Jeremy Blumel Posted October 3, 2003 Share Posted October 3, 2003 If you are using 3DSMAX, your brightness and contrast settings are way up there ... I'd recommend leaving them at 50/50. Increasing your Filtering setting will give you a smoother result too. Edit: And your Physical Scale should be the same value as the brightest Photometric light you have in the scene (most likely your sun). Link to comment Share on other sites More sharing options...
RezMAN Posted October 3, 2003 Share Posted October 3, 2003 I know that I’ve mentioned the materials before, but if the ground plane is a constant material then it cannot receive any shadows. This is because it only has one colour property. Btw, I hope you don’t mind me posting visual references... Link to comment Share on other sites More sharing options...
M_Jaco Posted October 8, 2003 Author Share Posted October 8, 2003 Thanx for all your advice. Sorry for the delay in replying - I've gotten tied up with another work project. Will use your input as soon as I can get back to this picture. :ngesmile: Link to comment Share on other sites More sharing options...
quizzy Posted October 9, 2003 Share Posted October 9, 2003 You might want to share the max/viz file with us... so we can help more directly... Link to comment Share on other sites More sharing options...
illyrianeye Posted October 9, 2003 Share Posted October 9, 2003 in the exposure control try using the direct and indirect as well see what happens Link to comment Share on other sites More sharing options...
Wilson Iwazawa Posted October 9, 2003 Share Posted October 9, 2003 affect indirect only is checked try uncheck it Other thing is to be sure that on the Rollout "Rendering Parameters" of Advanced Lighting menu, "Render Direct Illumination" is checked. Link to comment Share on other sites More sharing options...
M_Jaco Posted October 21, 2003 Author Share Posted October 21, 2003 Ok, I am back Here is an update that I did with all your advice, I don't know if the shadows under the table are like in real life or is something still wrong, Please comment Thanks http://www.cgarchitect.com/forum/filepush.asp?file=ClassRoomRadiasitytest_1.jpg Link to comment Share on other sites More sharing options...
JHalton Posted November 4, 2003 Share Posted November 4, 2003 There is a few things wrong here. 1. You could be using planes for the ceiling and the floor. Try to keep these solid objects if poss. 2. You have to Override the materials with Advanced lighting override. Or Radiosity override in Earlier versions. 3. Check that you shadow are actually activated. 4. Use a regather in your radiosity solution. 5. Make sure that the scale of your exposure matches the scale of your brightest light. e.g. 4000 or whatever you have it at. And make sure its on Logarithmic. 6. Again Overide Materials is very important. 7. Read user help twice. You'll know how to do it then! Cheers James Link to comment Share on other sites More sharing options...
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