Marc Posted January 24, 2005 Author Share Posted January 24, 2005 Does it give any error messages when you try and render? Or does it just render black? M Quote Link to comment Share on other sites More sharing options...
spice Posted January 24, 2005 Share Posted January 24, 2005 Does it give any error messages when you try and render? Or does it just render black?M 15903[/snapback] No, there is no error message, it renders 300 black images (mantra_1, 640x480) ! Quote Link to comment Share on other sites More sharing options...
mike Posted January 25, 2005 Share Posted January 25, 2005 enclosed you will find another version of the hairball. maybe this works for you. hairball.zip Quote Link to comment Share on other sites More sharing options...
spice Posted January 25, 2005 Share Posted January 25, 2005 enclosed you will find another version of the hairball.maybe this works for you. 15912[/snapback] Perfect, thanks !!!! I will post some results of my latest version (v1.2)... Arno arno_hair_far_field_v1_2.zip Quote Link to comment Share on other sites More sharing options...
spice Posted January 25, 2005 Share Posted January 25, 2005 enclosed you will find another version of the hairball.maybe this works for you. 15912[/snapback] Perfect, thanks !!!! I will post some results of my latest version (version 1.2)... Arno Quote Link to comment Share on other sites More sharing options...
spice Posted March 14, 2005 Share Posted March 14, 2005 This is the latest version.... (v1.4).... Cheers, Arno Quote Link to comment Share on other sites More sharing options...
djpeanut Posted March 14, 2005 Share Posted March 14, 2005 This is the latest version.... (v1.4)....Cheers, Arno 16803[/snapback] Did you by any chance mean to attach a file? Quote Link to comment Share on other sites More sharing options...
spice Posted March 15, 2005 Share Posted March 15, 2005 Did you by any chance mean to attach a file? 16813[/snapback] Yes.... [edit] Please reload the attachment, since there was still a bug due to the limited numerical precision of VEX.... Hope this is the final release !!! [edit] arno_hair_far_field_v1_4.zip Quote Link to comment Share on other sites More sharing options...
GregC Posted April 26, 2005 Share Posted April 26, 2005 Hello Folks I ａｍ ｔｒｙｉｎｇ ｔｏ wrtie a RSL shader using the ｆｏｒｍｕｌａｒ proposed by Marschner et al. 2003 at SIGGRAPH. But I ａｍ ｈａｖｉｎｇ ｔｒｏｕｂｌｅ ｕｎｄｅｒｓｔａｎｄｉｎｇ ｓｏｍｅ ｏｆ ｔｈｅ ｃｏｎｃｅｐｔ ｉｎ ｉｔ ． Ｉam more of a programmer than a mathmetician(my math background isnt that good at all). I am wondering if anyone could simply the formular for me, and post it here. Your help would be greatly appreciated. Thanks! Quote Link to comment Share on other sites More sharing options...
spice Posted April 26, 2005 Share Posted April 26, 2005 Hello Folks I ａｍ ｔｒｙｉｎｇ ｔｏ wrtie a RSL shader using the ｆｏｒｍｕｌａｒ proposed by Marschner et al. 2003 at SIGGRAPH. But I ａｍ ｈａｖｉｎｇ ｔｒｏｕｂｌｅ ｕｎｄｅｒｓｔａｎｄｉｎｇ ｓｏｍｅ ｏｆ ｔｈｅ ｃｏｎｃｅｐｔ ｉｎ ｉｔ ． Ｉam more of a programmer than a mathmetician(my math background isnt that good at all). I am wondering if anyone could simply the formular for me, and post it here. Your help would be greatly appreciated. Thanks! 17788[/snapback] Hi, I Quote Link to comment Share on other sites More sharing options...
GregC Posted April 26, 2005 Share Posted April 26, 2005 Hello Arno, Thanks for the quick respond. I wanted to write a renderman sl shader for Maya. I am having some problems implementing the concept. Maybe you could give me some hint on where I should start. The calculation of R, TT, and TRT seems quite hard for me to understand, the formular in the paper throws me off at some point. Is there a way you could explain to me how the R, TT, TRT is calculated? Sorry if my questions sound dumb. I want to write my shader using sl and use it with maya. Unfortunately, my math isnt that good either but I really want to be able to understand the whole concept and be able to produce the shader. Thanks! Gregory Quote Link to comment Share on other sites More sharing options...
edward Posted April 26, 2005 Share Posted April 26, 2005 But that's no excuse! Download Houdini 7.0.231 here: http://sidefx.vislab.usyd.edu.au/ Quote Link to comment Share on other sites More sharing options...
GregC Posted April 27, 2005 Share Posted April 27, 2005 Just wondering how to calculate the length of the pentrating ray? would it be something like 1/cos(theta_t)? how would you calculate (theta_i ) and (theta_t) and (gamma_t)? please help me out here! Thanks Greg Quote Link to comment Share on other sites More sharing options...
spice Posted April 28, 2005 Share Posted April 28, 2005 OK, i Quote Link to comment Share on other sites More sharing options...
GregC Posted May 6, 2005 Share Posted May 6, 2005 Hey Arno Thanks for your inputs and patience! I am still working on it.. but I guess it might take me sometime to finish the shader. There are still some parts that I didnt understand, I will ask you again when I have my thoughts gathered. BTW great paper on the topic, helps me to clear out some of the questions! Thank! Gregory Quote Link to comment Share on other sites More sharing options...
thekenny Posted May 6, 2005 Share Posted May 6, 2005 For more information read my paper !!! (http://cg.cs.uni-bonn.de/project-pages/hairmodeling/) There you find a short rehash of all relevant formulae...Hope this helps you... Um, I've gone to the site and the paper I'd like to read is not working with the pages links. Could you double check the pdfs are working for download Thanks -k Quote Link to comment Share on other sites More sharing options...
spice Posted May 6, 2005 Share Posted May 6, 2005 Um, I've gone to the site and the paper I'd like to read is not working with the pages links. Could you double check the pdfs are working for downloadThanks -k 18003[/snapback] Hmm... it should work (I had no problems to download it from the site)... If you still have problems, I can sent you a copy via email... Arno Quote Link to comment Share on other sites More sharing options...
DaJuice Posted November 20, 2005 Share Posted November 20, 2005 Thanks for posting this shader spice. I was having some fun with it today. Quote Link to comment Share on other sites More sharing options...
spice Posted November 21, 2005 Share Posted November 21, 2005 Thanks for posting this shader spice. I was having some fun with it today. 22724[/snapback] Nice to see some goodlooking results Currently I Quote Link to comment Share on other sites More sharing options...
DaJuice Posted November 21, 2005 Share Posted November 21, 2005 BTW, would it be possible to extract this "hairy ball" geometry, so that I can import it to my proprietary renderer?! 22728[/snapback] Sure thing, I hope obj format is ok. It's actually only half a furball, didn't want to throw around hairs that you won't see. The geometry contains UVs too btw... Clicky Click Cheers! Quote Link to comment Share on other sites More sharing options...
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