Real-Time Physics Simulation Forum

Re: Bullet 2.74 released: constraint visualization

2009-03-21T20:49:15+00:00

All constraint drawing functions are based on btIDebugDraw::drawLine() call
so they should work if you have this function implemented

Sorry for the late reply, but great news! So I get the new feature for free!

Statistics: Posted by nikki — Sat Mar 21, 2009 8:49 pm

Re: Bullet 2.74 released: constraint visualization

2009-03-18T04:02:42+00:00

Hello,

All constraint drawing functions are based on btIDebugDraw::drawLine() call
so they should work if you have this function implemented

Thanks,
Roman

Statistics: Posted by rponomarev — Wed Mar 18, 2009 4:02 am

Re: Bullet 2.74 released: constraint visualization

2009-03-15T17:07:50+00:00

Hey! Congrats on the new release!

I'm going to download it, but I have a quick question: Does the new constraint-drawing code use the existing line-drawing callbacks? Or do we have to implement some more functions?

Statistics: Posted by nikki — Sun Mar 15, 2009 5:07 pm

Bullet 2.74 released: constraint visualization

2009-03-15T10:33:24+00:00

Great job bullet physics team, you guys ROCKS

Statistics: Posted by thloh85 — Sun Mar 15, 2009 10:33 am

Re: Bullet 2.74 released: constraint visualization

2009-03-04T12:45:37+00:00

Great job, thanks for all Bullet DevTeam members

Statistics: Posted by nadro — Wed Mar 04, 2009 12:45 pm

Re: Bullet 2.74 released: constraint visualization

2009-03-04T12:16:18+00:00

Erwin,
has split impulse been re-added in this release ?

Statistics: Posted by gjaegy — Wed Mar 04, 2009 12:16 pm

Re: Bullet 2.74 released: constraint visualization

2009-03-03T23:54:49+00:00

Issue should be fixed and final Bullet 2.74 build has been uploaded.

Please keep feedback and discussions in this forum,
Enjoy!
Erwin

Statistics: Posted by Erwin Coumans — Tue Mar 03, 2009 11:54 pm

Re: Bullet 2.74 beta1 released: constraint visualization

2009-02-10T08:20:50+00:00

Hi Erwin, thanks for the feedback!

I've posted more test results in the issue, I guess the discussion should proceed there. I've tried separate clean builds to be sure it's nothing in my svn directory. The problem still remains.

Best regards,
Ola

Statistics: Posted by ola — Tue Feb 10, 2009 8:20 am

Re: Bullet 2.74 beta1 released: constraint visualization

2009-02-09T20:10:05+00:00

how is the "Option for one-shot multiple-contact generation" used?

A convenience method for btDefaultCollisionConfiguration has just been added in the latest SVN trunk, so it will be available in the next/final Bullet 2.74 release:

Code:

///collision configuration contains default setup for memory, collision setupm_collisionConfiguration = new btDefaultCollisionConfiguration();m_collisionConfiguration->setConvexConvexMultipointIterations(3);

Until this convenience method has been added, please use the following snippet. Note that this feature decreases performance, so it is switched off by default.

Code:

btConvexConvexAlgorithm::CreateFunc* convexConvex = (btConvexConvexAlgorithm::CreateFunc*)m_collisionConfiguration->getCollisionAlgorithmCreateFunc(CONVEX_SHAPE_PROXYTYPE,CONVEX_SHAPE_PROXYTYPE);convexConvex->m_numPerturbationIterations = 3;

I just tried the Bullet demos in single precision mode. The picking issues are gone, so it seems that the demos are only broken in double precision mode!

Picking seems to work fine under Windows 32bit, compiled using double-precision. Did you try a full clean rebuild? We'll do some testing of Linux double-precision built, you can track progress on the issue here.

Thanks for the feedback,
Erwin

Statistics: Posted by Erwin Coumans — Mon Feb 09, 2009 8:10 pm

Re: Bullet 2.74 beta1 released: constraint visualization

2009-02-07T23:05:52+00:00

Hi, thanks for the update! Looking forward to trying out the new features.

I'm using the current SVN version (1610) now, and since a while back the mouse picking of objects in the demo applications has been broken. For example, when trying to pick a cylinder in the CcdPhysicsDemo, the simulation explodes (cylinders flying everywhere quickly), or it aborts due to the assert in btQuaternion for a value of 0. This seems to be a general issue in all demos that allow picking up objects with the mouse. I'm not quite sure at which revision this was broken, I can look further into it if you like.

I'm running this on Linux, 32 bit, and it's compiled with double precision.

Best regards,
Ola

EDIT:
I just tried the Bullet demos in single precision mode. The picking issues are gone, so it seems that the demos are only broken in double precision mode!

Statistics: Posted by ola — Sat Feb 07, 2009 11:05 pm