Christiaan Posted March 16, 2012 Share Posted March 16, 2012 Is it possible to cast a shadow from an object without that object being visible? For instance I have two buildings next to each other and I've workgroup referenced one into the the other. Can I cast shadows from one building onto the other without turning on the visibility of that building. I don't want to make the other building visible in one elevation because it would mask the one I'm trying to show. Quote Link to comment
Dieter @ DWorks Posted March 16, 2012 Share Posted March 16, 2012 Can't you use a section viewport? Quote Link to comment
CipesDesign Posted March 16, 2012 Share Posted March 16, 2012 I have done this before by 1) Turn on the unwanted bldg, so that the shadows are visible; 2) trace the shadow(s) in the VP annotations - use a light gray polygon with the opacity set to 25-35% (you can play with that later). 3) turn off unwanted bldg. Quote Link to comment
Christiaan Posted March 16, 2012 Author Share Posted March 16, 2012 Peter I'm too lazy for that kind of thing. I'll just have to edit it! Dieter, I tried that but, alas, as I've noticed before, section viewports let the light leak in: http://techboard.vectorworks.net/ubbthreads.php?ubb=showflat&Number=167193 Quote Link to comment
CipesDesign Posted March 16, 2012 Share Posted March 16, 2012 That is lazy. It's one or two polygons. I could do it faster than I can explain how to do it... Quote Link to comment
bcd Posted March 16, 2012 Share Posted March 16, 2012 There was a post a while back about shadow casting - I can't seem to find it but as I remember there wasn't a solution in VW. I can't immediately think of a way that it could be done. Quote Link to comment
Dieter @ DWorks Posted March 17, 2012 Share Posted March 17, 2012 Peter I'm too lazy for that kind of thing. I'll just have to edit it! Dieter, I tried that but, alas, as I've noticed before, section viewports let the light leak in: http://techboard.vectorworks.net/ubbthreads.php?ubb=showflat&Number=167193 I think it's because you use a DLSVP. Try a SLSVP. I could be wrong on this, can't test it now. Quote Link to comment
Horst M. Posted March 17, 2012 Share Posted March 17, 2012 (edited) Looks like you are C4D ready. There are many Tags in Cinema that allow stuff like shadows of a ghost and other Tricks. Edited March 17, 2012 by Horst M. Quote Link to comment
Christiaan Posted March 17, 2012 Author Share Posted March 17, 2012 That is lazy. It's one or two polygons. I could do it faster than I can explain how to do it... To be lazy in this regard is a goal. It's more like an allergic reaction to techniques that involve static information outside the 3D workflow. Sure it might take a few moments to draw it once but what if you want to alter it tens of times? Maybe at the last minute on a deadline? Maybe involving multiple buildings and dozens of views? And what if other people besides yourself are involved in the editing (they all need to know a technique over and above the one they're already using, which someone needs to take the time to explain/show to them)? Quote Link to comment
CipesDesign Posted March 17, 2012 Share Posted March 17, 2012 Christiaan, I agree with all of that and I understand and I sympathize. However I still remember doing all that by hand, with a pencil. Oh, and an eraser! Quote Link to comment
bc Posted March 17, 2012 Share Posted March 17, 2012 Don't forget the erasing shield! Quote Link to comment
Christiaan Posted March 17, 2012 Author Share Posted March 17, 2012 Christiaan, I agree with all of that and I understand and I sympathize. However I still remember doing all that by hand, with a pencil. Oh, and an eraser! Hehe, hey I'm not that young! Me too, my first 5 years was on a board loved it but ever since I've also been dreaming of the day I would be creating a virtual model and producing everything from that. Glad to say I think I'm finally there. Don't forget the scalpel blade!! Quote Link to comment
browndoggio Posted November 3, 2012 Share Posted November 3, 2012 Shadows without any other objects is possible with the Artistic Renderworks, "Line and Shadow" option for the background render (no foreground render). Just use class overrides in your VP to change the pen color for all visible classes to "none"...all objects that cast shadows are still technically in the VP, but they're just not visible this way. Changing the "Edge Thickness" to the minimal value helps give the resulting shadows a more refined look. I use this technique as part of a two VP approach, with the shadows VP underneath a separate hidden line VP with annotations for line weight, hatches, color fills etc. Quote Link to comment
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