Perhaps I should add to my post below. I was a bit hasty in many aspects. Lol.
What I cant recommend is the tweaking I needed to do to balance the horizontal rectangle light sensitivity with the vertical back drop light sensitivity. The two planes are at different angles to the main light source as indicated by the shadows in the back drop picture and so they receive light at different values. Since I had balance this by eye I suggest it is not ideal. But firstly, while I couldnt get Arjo's recommendation of self illumination to work is probably my error and would overcome the issue above. Secondly, the light sensitivity source does not have to be in the same place as the image target light source. So if it was a distance light at 45 degrees to both planes, balancing by eye wouldnt be needed. The problem with balancing by eye is that the light sensitivity source must not move - it would be tricky maintain balance of light input on the two planes. But again, a constant angle equidistant could sort this plus that particular light source doesnt have to move at all. The image mapping to both the back vertical plane and the ground plane must always be aligned to the camera POV of course so limited panning might be Ok but again animation might be tricky. No issue for stills of course. Lastly, turn of "casts shadows" in the light sens light source as well as the two mapped planes. Perhaps Arjo or someone could go a bit further on the self illumination trick. I just couldnt get it to work like that. N. ________________________________ From: Neil Cooke <[email protected]> To: [email protected] Sent: Sun, 16 May, 2010 2:37:10 AM Subject: Re: Matte shadows Got it, thanks Arjo, I attach a jpg but not sure it will get to the list. And while it's a solution, I cant recommend it. Lol. In any case, uses light sensitivity controller material rather than self illumination (on left). N. ________________________________ From: Arjo Rozendaal <[email protected]> To: [email protected] Sent: Sun, 16 May, 2010 1:10:44 AM Subject: RE: Matte shadows Hi Neil, I guess he means a shadow from an object on a background plate. So the car is 3D, the road is a picture. But you should see a shadow of the object on the background picture. What you need is a horizontal rectangle. Project the image on this rectangle from the camera viewpoint. The material should be self illuminating, so that regular lights have no influence on it. Put the car on top of this plane, and it will drop a shadow on it. Of course you need another vertical rectangle with the same camera mapped picture to serve as a background. I hope this answer is clear enough. Arjo. Van:[email protected] [mailto:[email protected]] Namens Neil Cooke Verzonden: zaterdag 15 mei 2010 2:23 Aan: [email protected] Onderwerp: Re: Matte shadows I dont know what a matte shadow is. Matte, to me means "excluded by shape" ... some shape is not included in some part of the effect. But all this is easy in RS.. For soft edge shadows I use a rectangle as a special light ... I would use this to get a soft edge shadow under a car for example. If any of the above is any use, let me know and I'll give more detail, but I dont think it's what you are after. Sorry I cant help. Neico ________________________________ From:Ville Tirronen <[email protected]> To: [email protected] Sent: Sat, 15 May, 2010 11:48:57 AM Subject: Re: Matte shadows Just normal matte shadows for composition. I recall I saw one tut from internet which had a car and pavement made with RS, but now I cannot find it anymore. I tried tut from manual, but it gives incorrect shadows. Perhaps I should export only shadows for composition. Only problem is that I don't know how to do that. Ville > > On 05/15/2010 01:06 AM, Matthias Kappenberg wrote: >> Maybe my mail was not beeing forwarded: >> >> Which tutorial do you mean, >> and what should be the result / is exspected ? >> >> Matthias >> >> ----- Original Message ----- >> From:<[email protected]> >> To:<[email protected]> >> Sent: Tuesday, May 11, 2010 9:25 PM >> Subject: Matte shadows >> >> >>> Any good tutorials for correct soft matte shadows? >>> Tutorial in the manual shows shadows incorrectly. >>> >>> Ville >>> >> >
