thekenny Posted June 17, 2004 Share Posted June 17, 2004 just curious, how many people out there use pre-transforms. do you find them helpful or annoying. -k Quote Link to comment Share on other sites More sharing options...
meshsmooth Posted June 17, 2004 Share Posted June 17, 2004 Yes helpfully but annoying, but I am currently dealing with object types that I need to be really flexible and I don Quote Link to comment Share on other sites More sharing options...
Jason Posted June 17, 2004 Share Posted June 17, 2004 Oddly enough, I haven't had to deal with them a lot. I guess it has a lot to do with how we end up using Houdini here - not a lot of object manipulation; mostly SOPs. But the future of Houdini involves a LOT of object manipulation and all the tools to deal with many objects like the the multiple-selection parm changes and the Morph tool, drag'n'drop for shaders and such are opening new doors for us. Our Maya::Houdini translation pipeline allows object-per-object scene translation and some of the time its really useful getting in every seperate shape-node from maya into a seperate Houdini object. With these tools (and the pre-transforms) this is now do-able. In the old days, it was a nightmare. Now its managable. Still there are a couple of tools missing, like the equivalent of Maya's "Seperate". The pre-transforms allow you to emulate the transform node for the pivot point quite effectively, except that you have no way to animate it. Quote Link to comment Share on other sites More sharing options...
Wolfwood Posted June 20, 2004 Share Posted June 20, 2004 They are really handy if you know they are there. In addition to what Jason said they are more efficient than slapping down a null and putting the xform there. Plus they allow you to 0 out parameters. Instead of your default elbow rotation being -35,-19,-35 you can dump that value into the pre-xform and make the default 0,0,0. Its really handy..... if you know how to use it. Quote Link to comment Share on other sites More sharing options...
old school Posted June 21, 2004 Share Posted June 21, 2004 I turn on the global preference "Read-only Pretransforms". Yes Jim it is off the defaults but for Character rigging it works well. This feature allows me to manage where the pretransforms go as there are some operations in Houdini that will build pretransforms for you. Sometimes you want them exposed to see exactly what got changed and by how much. You can still manually build the pretransforms. For the majority of the work outside of character rigging, you don't have to manage pretransforms nearly as often. -jeff Quote Link to comment Share on other sites More sharing options...
renderpipe Posted June 23, 2004 Share Posted June 23, 2004 Is this the same thing as "Freeze Transformations" in other 3d application? I would search the online help for this but it appears to be broken on my system. Quote Link to comment Share on other sites More sharing options...
old school Posted June 23, 2004 Share Posted June 23, 2004 Yep. Quote Link to comment Share on other sites More sharing options...
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