DaJuice Posted September 7, 2003 Share Posted September 7, 2003 This should be simple but I can't get it right. Here is a simple network I made, and the attribute stuff is set up like in the POP video turorial, but mine isn't working. What the heck am I over-looking?? simplepop.zip Quote Link to comment Share on other sites More sharing options...
Jason Posted September 7, 2003 Share Posted September 7, 2003 Without looking at the file, just some info: Whats a pitfall about the Inherit Velocity is that it'll use the "v" attribute OR the "N" attribute on your geometry. I cant remember offhand which one takes precedence (I think N), but that can trip you up pretty easily. If the Source POP had a option to choose which one to use, it'd be a little clearer, but you may as well just use try one or the other. I hope this actually is the reason:) J. Quote Link to comment Share on other sites More sharing options...
DaJuice Posted September 7, 2003 Author Share Posted September 7, 2003 Thanks for the fast response Jason. Ok, the source geometry is a null in this case. I appended a Point SOP and added Normal and Velocity attributes and I pointed the Source POP at this SOP. In the attribute page I chose either v or N but neither are working. They are spawning correctly from the null but the only thing affecting their motion is the Force POP I have. Quote Link to comment Share on other sites More sharing options...
chang Posted September 7, 2003 Share Posted September 7, 2003 This is similar approach, DaJuice. simplepop_modified_chang.zip Quote Link to comment Share on other sites More sharing options...
DaJuice Posted September 7, 2003 Author Share Posted September 7, 2003 Thank you chang, but how do you do this without overwriting the animation with an expression? I'd still like to know what was wrong with my file... Quote Link to comment Share on other sites More sharing options...
DaJuice Posted September 9, 2003 Author Share Posted September 9, 2003 *bump* Nobody knows what's wrong with my file? To show that I'm not trying to waste anybody's time, here is what I'm working on at the mo... (divx5.0.2, 320x240, 4sec, 139kb) http://dajuice.t35.com:8000/files/walk.avi Ignore the crappy walk cycle and shaders, the problem is the fireballs. Well it's not really supposed to be fire, more like some kind of semi-liquid acid goo. Anyways, without inherit velocity working the motion looks pretty bad as you can see. Quote Link to comment Share on other sites More sharing options...
Mamoru Posted September 9, 2003 Share Posted September 9, 2003 The point SOP only adds attributes and sets them to the specified value. It doesn't actually compute the velocity. For this, try the trail SOP. The problem appears to be that you're inheriting a velocity of 0, 0, 0. Hope this helps... Quote Link to comment Share on other sites More sharing options...
DaJuice Posted September 9, 2003 Author Share Posted September 9, 2003 I must be brain dead, I just can't get this to work. I apply a Trail SOP, set 'Compute Velocity' and pick the Trail SOP as my source geometry in POPs. Leave inherit velocity page at defaults, nothing. Change the scope to v only, nothing. This is driving up the wall, what else can I do? Quote Link to comment Share on other sites More sharing options...
edward Posted September 9, 2003 Share Posted September 9, 2003 The Trail SOP computes velocity based on changing *geometry*. So what I did was create another object, Object Merged in your null_model and set the Transform Object to dot (.) This essentially brings your object-level animation into the SOP world. So append your Trail sop to this with compute velocity and use it as your source geometry in the source pop. PS. A way to see this is to go into the SOP level for your null_model object and turn off the See All button. Now hit play. Note that there's no animation. Quote Link to comment Share on other sites More sharing options...
edward Posted September 9, 2003 Share Posted September 9, 2003 PPS. I love your model and the capture weighting on it looks great! Quote Link to comment Share on other sites More sharing options...
cs00bren Posted September 10, 2003 Share Posted September 10, 2003 watched the video it looks good Quote Link to comment Share on other sites More sharing options...
DaJuice Posted September 10, 2003 Author Share Posted September 10, 2003 Halleluya, we have a winner! Thanks once again Edward (and everyone else too) and thank you for the nice comments. 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.