mskin Posted February 22, 2007 Share Posted February 22, 2007 can anyone tell me why this happens? obviously the ball is supposed to generate a shadow for the tree. its properties are set to renderable and ast shadows.... thats it. some sort of an artifact is left behind during the render.... i dont get it. Link to comment Share on other sites More sharing options...
mskin Posted February 22, 2007 Author Share Posted February 22, 2007 This was my first shot with planes. i dont think this is an accurate interpretation of how the shadows would work... i dont think i would see the trunks shadow at this angle. regardless... i still get that weird artifact. Link to comment Share on other sites More sharing options...
Justin Hunt Posted February 22, 2007 Share Posted February 22, 2007 Its the way MR deals with the "Visible to camera" setting, as well as the max trace depth for transparancies. I can give you a definite answer. I get the same problem when "invisable to camera" objects are seen through transparent objects, they become visible JHV Link to comment Share on other sites More sharing options...
nisus Posted February 22, 2007 Share Posted February 22, 2007 I get the same problem when "invisable to camera" objects are seen through transparent objects, they become visible Yeah, same here... pretty shitty... nisus Link to comment Share on other sites More sharing options...
nisus Posted February 22, 2007 Share Posted February 22, 2007 forgot to tell you, but it's a really nice tree! I like the painterly look... almost like a tedious marker-drawing ,-) nisus Link to comment Share on other sites More sharing options...
mskin Posted February 22, 2007 Author Share Posted February 22, 2007 so whats the solution. exclude foliage from from mental ray renderings altogether? anyone looking for help in the midwest? Link to comment Share on other sites More sharing options...
nisus Posted February 22, 2007 Share Posted February 22, 2007 exclude foliage from from mental ray renderings altogether? I honestly don't know, because I don't do these things. We do all 3d-vegetation... rgds, nisus ps: Midwest: where are you located? Kansas, Missouri, Oklahoma? Link to comment Share on other sites More sharing options...
mskin Posted February 22, 2007 Author Share Posted February 22, 2007 just kidding.... im from new england. we (or im) under the impression there are few trees in the midwest, and since i use mental ray... it could be a good fit. anyway.... I tried to populate this scene im working on with 3d max trees. i understand they are no good, it was more for s&!Ts and giggles - but i was curious to see how the rendering went over. not well. completely shut down max. i've been contemplating askeing for a 3d tree package, but im afraid ill ask my boss to spend 500 for treestorm and i will keep crashing. im curious why i crashed.... polycount? and im curious how a professional tree package compairs to 3d max. what is a comparison between and onyx tree and a 3d max tree of similar comlpexity. anyway, thats why im screwing around with these xtrees. should i push for onyx trees? is there a better package than onyx. How do i know without being able to try? Link to comment Share on other sites More sharing options...
nisus Posted February 22, 2007 Share Posted February 22, 2007 lol about the midwest... I've been around there several times... I found it VERY green, especially the area around Kansas City... Anyway, why not ask for a few demo-trees from Xfrog? You can scatter them around... and try... (be careful on the LZW-tiff though... MR doesn't like that... ) rgds, nisus Link to comment Share on other sites More sharing options...
Justin Hunt Posted February 23, 2007 Share Posted February 23, 2007 I think is because the Visible to camera, visible to reflection and transpareany are all calculated by the same raytype. When I posted my problem I while ago on the Adesk max8 forum, I was amaized that "A" no-noe could understand the issue and "B" see that it was a problem in the first place. Unfortunatly no workrounds were found. This is what I posted then JHV Link to comment Share on other sites More sharing options...
vizwhiz Posted February 23, 2007 Share Posted February 23, 2007 imagecels has some good Trees for 2d bitmap planes http://www.imagecels.com/im01800.html is a Free download page link This is a good index page of links http://www.imagecels.com/100.html New! Foreground Plants - Zones 2-7 Foliage - 52 deciduous trees & shrubs partials for temperate climate renderings Foreground Plants - Zones 8-12 Foliage - 52 trees & shrubs partials for framing warm climate renderings Foreground Plants - Palms - 52 palm tree partials for framing renderings Professional Trees & Shrubs III - Zones 8-12 - 163 trees, palms, shrubs for warm climates Professional Trees & Shrubs II - Zones 2-7 - 159 trees & shrubs for temperate climates Professional Trees & Shrubs - 200 trees and shrubs for all zones Flowers & Blooming Plants - 172 blooming perennials, annuals, vines, shrubs & trees oops The urls didnt show up with The Text i am out in Arizona so i have used The Desert collection & Palm Trees hope This helps randy Link to comment Share on other sites More sharing options...
Justin Hunt Posted February 23, 2007 Share Posted February 23, 2007 The 2D option is good, as an added step, apply 2 bend modifiers to the plane. one to curve is sideways and the other to cuve it top to bottom. This will help pick up the lighting better. JHV Link to comment Share on other sites More sharing options...
nisus Posted February 23, 2007 Share Posted February 23, 2007 Hi Justin, I remember this post... I think is because the Visible to camera, visible to reflection and transpareany are all calculated by the same raytype What about the raymarching... What type of shadows are you using? Simple??? Maybe try and play around with these settings... pls, keep us updated rgds, nisus Link to comment Share on other sites More sharing options...
Justin Hunt Posted February 26, 2007 Share Posted February 26, 2007 Raytrace and area shadows, I don't use shadow maps as they are too slow, grainy and take up too much memory. JHV Link to comment Share on other sites More sharing options...
nisus Posted February 26, 2007 Share Posted February 26, 2007 Did you had any time to check the raymarching on transparant objects? nisus Link to comment Share on other sites More sharing options...
Justin Hunt Posted February 26, 2007 Share Posted February 26, 2007 please explain, I used the standard transparency settings of a standard material. As yet I havnt tried any other shader type. JHV Link to comment Share on other sites More sharing options...
nisus Posted February 27, 2007 Share Posted February 27, 2007 Hi Justin, It's no a shader, it's a setting in the RenderDialog/Renderer/Shadow&Displacement setting. Here you can en/disable the shadows, but also set a shadow 'mode': Simple, Sort or Segment. From what I've read and seen, this activates the raymarching (splitting a ray into several segments). rgds, nisus Link to comment Share on other sites More sharing options...
mskin Posted February 27, 2007 Author Share Posted February 27, 2007 i did play with those yesterday. didn't seam to change anything in terms ofthe tree. i just caved in and bought treestorm. actually about an hour ago... haven't recieved anything yet. Link to comment Share on other sites More sharing options...
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