It is currently Wed Nov 20, 2019 4:15 am


All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: [Closed] raycast threshold
PostPosted: Mon Jun 18, 2012 1:36 pm 

Joined: Sun Jun 10, 2012 12:19 pm
Posts: 3
the logic in polyvox for creating a solid voxel is (density >= threshold) but the logic for a ray cast is (density > threshold)
everywhere else in the code it seems to use >= or < which is fine - it's just doRaycast that's odd - I've changed mine locally and it works now.

I've also heard this concept is changing in future, in which case it probably doesn't matter.


Top
Offline Profile  
Reply with quote  
 Post subject: Re: raycast threshold
PostPosted: Mon Jun 18, 2012 3:27 pm 
User avatar

Joined: Wed Jan 26, 2011 3:20 pm
Posts: 203
Location: Germany
that is only for the default raycast, which is really not very useful imo.
for density volumes it does not return the correct hit position, and for material volumes you usually want more complex hit queries anyway...

usually you will use the raycast with callback class


Top
Offline Profile  
Reply with quote  
 Post subject: Re: raycast threshold
PostPosted: Tue Jun 19, 2012 8:55 am 
Developer
User avatar

Joined: Sun May 04, 2008 6:35 pm
Posts: 1827
Yep, this is probably a mistake, though I can't fix it right now as I don't have the Git wesion of PolyVox on this machine. I'll leave this thread open and change it tomorrow.

But yes, as you say this will change in the future and it will be the users responsibility to decide what is solid or empty.


Top
Offline Profile  
Reply with quote  
 Post subject: Re: raycast threshold
PostPosted: Fri Oct 12, 2012 8:35 am 
Developer
User avatar

Joined: Sun May 04, 2008 6:35 pm
Posts: 1827
As discussed in this blog post the raycasting functionality has had something of an overhaul. The bug reported here no longer applies because the user has full control over the stopping criteria of the ray via a callback function.


Top
Offline Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Theme created StylerBB.net