Guest jodie Posted June 7, 2002 Share Posted June 7, 2002 Hey Guys, I'm from the Philippines and just got hooked on this site.. Anyway how do you create the rays of light shinning thru a window and having a sort of decay effect... I'm using 3ds max r3, any help would be appreciated. have no one here to ask since I'm self taught and don't know anyone who is in to this... jodie [ June 07, 2002, 10:12 AM: Message edited by: jodie ] Link to comment Share on other sites More sharing options...
STRAT Posted June 7, 2002 Share Posted June 7, 2002 volumetrics. your spot or omni needs to shine a volumetric light to create this effect. to get the fade effect use attenuation. and to get it shining through a window effect you must use raytraced shadows. try the F1 help option. all is easily explained in there. Link to comment Share on other sites More sharing options...
Guest jodie Posted June 8, 2002 Share Posted June 8, 2002 STRAT, Thanks for the tip. But I can’t seem to make light rays coming thru a window using raytrace shadows. I use spot or direct light but when I turn on volume light it fills the entire room. When I use shadowmap the light rays or volume light only fill with the light… with raytrace they fill the room... Link to comment Share on other sites More sharing options...
samp Posted June 8, 2002 Share Posted June 8, 2002 Is "cast shadows" checked in your light proporties ? And reduce the volume light effect Link to comment Share on other sites More sharing options...
STRAT Posted June 8, 2002 Share Posted June 8, 2002 samp is right - cast shadows must be switched on and they must be raytraced. Link to comment Share on other sites More sharing options...
nisus Posted June 8, 2002 Share Posted June 8, 2002 Hi jodie, A good tip is to add a noise map as a projector in your spot/sunlight. That way you'll really have rays instead of only one beam. If it's for a still, I'd do it in photoshop, because it only takes a few minutes to accomplish, whereas you can spent hours tweaking the thing in max. rgds nisus Link to comment Share on other sites More sharing options...
samp Posted June 8, 2002 Share Posted June 8, 2002 And as you probably may noticed, it renders damn slow ... Link to comment Share on other sites More sharing options...
nisus Posted June 8, 2002 Share Posted June 8, 2002 photoshop Link to comment Share on other sites More sharing options...
Guest jodie Posted June 8, 2002 Share Posted June 8, 2002 Thanks guys, I'll try toying with it once I get these projects out of the way w/c are all commercial exterior... and one more thing.. cast shadows is always checked.. but in raytrace, you can see the light comimg from a window casting a shadow but the volume light is all over the place... hhhhmmmm.... nisus is right when it comes to rendering times.. volume light slows it down.. really slow... thanks again... [ June 08, 2002, 10:08 AM: Message edited by: jodie ] Link to comment Share on other sites More sharing options...
STRAT Posted June 10, 2002 Share Posted June 10, 2002 DelfoZ - ur right, exclude the glass, but if using max and you want the volumn light to shine through the windows only and not the walls, you HAVE to use raytraced shads. Link to comment Share on other sites More sharing options...
STRAT Posted June 10, 2002 Share Posted June 10, 2002 ok. just tried a test. havent used volumetric lighting since viz 1 where raytraced shads were essential. now in viz and max 3.x raytraced shads seem to not work, and normal shadow maps do! - so appologies to DelfoZ this is a quick volumetric light test shining through a plate with a logo cut out of it. is this the effect you are after? Link to comment Share on other sites More sharing options...
DelfoZ Posted June 10, 2002 Share Posted June 10, 2002 Originally posted by jodie: Thanks guys, I'll try toying with it once I get these projects out of the way w/c are all commercial exterior... and one more thing.. cast shadows is always checked.. but in raytrace, you can see the light comimg from a window casting a shadow but the volume light is all over the place... hhhhmmmm.... nisus is right when it comes to rendering times.. volume light slows it down.. really slow... thanks again...exclude the glass window from the light emitor. and the volumen light come to the room . dont use raytraced shadows 4 volumen light . Link to comment Share on other sites More sharing options...
kid Posted June 11, 2002 Share Posted June 11, 2002 Have you tried Scatter VL. It is an atmospheric plugin which works better than Max's own volume light, but has the same limitation, in that it will only work with shadowmap and not raytrace shadows. Get it here - it's free too Link to comment Share on other sites More sharing options...
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