Recent changes to bugs

HingeJoint ParamFMax can not be set

Tom Koller — Tue, 10 Jul 2018 14:31:30 -0000

I was trying the second pyode tutorial http://pyode.sourceforge.net/tutorials/tutorial2.html
Therefore i can use a HingeJoint with motor. But the motor does not take effect at all.

A minimal code:

import ode
world=ode.World()
joint=ode.HingeJoint(world)
joint.setParam(ode.ParamFMax, 22.)
print(joint.getParam(ode.ParamFMax))

Gives
0.0
result so i assume that the parameter does not get set properly and therefore the motor can not apply a force greater 0 Newton. This results in having no effect at all using a motor.

The problem also occurs in the tutorial code where an attachment to ode.enviorment and the ParamVel are set. I just created a minimal code example to reproduce the error.

world.step in tutorial3

Anonymous — Sun, 25 Apr 2010 02:52:48 -0000

I am sorry to report a bug here,Maybe it's not a bug
want I am running tutorial3's demo code,it occur a run time error
which say "assertion 'bNormalizationResult' failed in _dNormalize4()[../../include/ode/odemath.h]"
i debug it for a long time and i find it occur at the line of "world.step(dt/n)",i don't know why?
need help
please send me an email : chaogu2.0@gmail.com
thanks very mush

Collision detection broken in HEAD

Daniele Varrazzo — Sat, 09 Jan 2010 23:18:04 -0000

collision detection doesn't work with PyODE checked out from CVS HEAD
and ODE 0.11. The collision callback is never called. This can be
tested with tutorial3.py or with the script in
http://monsterden.net/software/ragdoll-pyode-tutorial: the objects
don't meet the plane and keep falling forever.

The same scripts using PyODE 1.2 and ODE 0.8 work correctly.

Missing Methods for UniversalJoint

Graham Cummins — Fri, 02 May 2008 19:16:23 -0000

I've been using PyODE for some time now, built on both Mac OSX and Ubuntu machines. I'm using version 1.2

I use UniversalJoint objects, and I have had to hack around a bug on both platforms.

The bug is that the PyREX-generated wrapper ode_trimesh.c doesn't define some functions in the ODE API. These include, at least:

getAngle1, getAngle2, getAngleRate1, and getAngleRate2 for UniversalJoint. They may include others, but these are the methods I needed.

If there is an alternate way to get this information, let me know.

Currently, the workaround I'm using is to edit ode_trimesh.c to include declarations of the appropriate methods. This seems to work.

I've attached the output of diff from the stock 1.2.0 file and my hacked file, in case it is useful

Mass.setSphereTotal wraps wrong function

Paul E.C. Melis — Wed, 19 Dec 2007 16:49:09 -0000

In PyODE 1.2.0 in src/mass.pyx: setSphereTotal() should wrap the correct ODE function, not dMassSetSphere().

Joints do not allow you to set arbitrary attributes

Anonymous — Sat, 12 Feb 2005 00:06:28 -0000

joint = ode.BallJoint(world)
joint.somevarname = 'test'

gets an error: AttributeError: 'ode.BallJoint' object
has no attribute 'somevarname'

However, doing it with a body object does work.

kallahar@quickwired.com