Juzwa Posted September 27, 2015 Share Posted September 27, 2015 Hi, I need to scale my camera to match the scale of the scene. The camera is in abc format. So I connected this cam to a null object and scaled it 200 times. But now when I render I can see that my pyro shader behaves differently on this scaled camera and on non scaled. Scaled: Non scaled: DO you know how to properly scale the camera so that is would render as non scaled cameras? Quote Link to comment Share on other sites More sharing options...
anim Posted September 27, 2015 Share Posted September 27, 2015 https://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=142496#142496 1 Quote Link to comment Share on other sites More sharing options...
Guest tar Posted September 28, 2015 Share Posted September 28, 2015 Note: just RFE'd this as it's quite a common gotcha. Ref (ID=71390) Quote Link to comment Share on other sites More sharing options...
Jason Posted September 28, 2015 Share Posted September 28, 2015 You're better off baking in the scale change to camera positions (use CHOPs and overrride an alternative camera, maybe) and use an unscaled camera. There are many behaviours with scaled cameras which are technically correct, but artistically unexpected. Quote Link to comment Share on other sites More sharing options...
Guest tar Posted September 28, 2015 Share Posted September 28, 2015 (edited) It could be classed as an artefact of the current rendering methodology/technology. I would pigeon-hole it into the artistic heuristic push that H14 started. Edited September 28, 2015 by tar Quote Link to comment Share on other sites More sharing options...
Juzwa Posted September 28, 2015 Author Share Posted September 28, 2015 Hi, Thanks for answers. I knew this was something with scaling the cam. So as for scaling camera back... I'm not sure how to 'unhide scale parameter' for the cam. I tried to edit parameter interface and look for scale but it was not there. And when I made my own scale it automatically changed the name form "s" to "s2". And as for CHOPs... I've never used it and I'm not sure what they do... Quote Link to comment Share on other sites More sharing options...
Guest mantragora Posted September 28, 2015 Share Posted September 28, 2015 In Edit Parameter Interface press Show Invisible Parameters. Scale will appear. Select it and uncheck Invisible checkbox. Accept. Quote Link to comment Share on other sites More sharing options...
Juzwa Posted September 28, 2015 Author Share Posted September 28, 2015 Thanks! Quote Link to comment Share on other sites More sharing options...
Netvudu Posted September 28, 2015 Share Posted September 28, 2015 using the Blend node at OBJ level to create a new camera and constraint it to everything but scale of the old one has given me much success during the last century. Quote Link to comment Share on other sites More sharing options...
michael Posted September 28, 2015 Share Posted September 28, 2015 there are a set of python functions to access bits of alembic files. NEVER scale a camera make a camera rig, this will allow you to override whatever you want without loosing the original imported parameter values. check out: http://www.sidefx.com/docs/houdini14.0/hom/abc_extensions Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.