6DoF constraint go mad on rotation round Y axes #29643

New Issue

Lars Hallberg · 2011-12-18T10:21:36+01:00

Lars Hallberg commented

2011-12-18 10:21:36 +01:00

Category: Physics

%%%Test file attached, From the file:

Testcase reveling 3 bugs in 6DOF rigid body constraint

Usage: w - spin wheel, a and d to turn stering.

The bugs:

instability in rotation round Y axis.

The lower left example try to rotate the wheel around the constraints Y axis

when rotation reach 90 degree it goes mad. The green and orange stering
objects are rotated so rotation is aroun Z and X axis - works fine. In the
top left example I try to rotate the pivot instead....

Rotating the pivot don't work.

For all I can tell the pivot is not rotated.

Max Torque on motors are wrong.

To isolate error source all the blue wheel is rotated by motor, the grey by
global Torque. The global torque is 1.0, the max in motors are 0.02 - Yet the
motors accelerate faster!?!?

Also see BA thread:
http://blenderartists.org/forum/showthread.php?239363-Steering-Test-Issues
%%%

**Category**: Physics %%%Test file attached, From the file: Testcase reveling 3 bugs in 6DOF rigid body constraint Usage: w - spin wheel, a and d to turn stering. The bugs: 1) instability in rotation round Y axis. The lower left example try to rotate the wheel around the constraints Y axis - when rotation reach 90 degree it goes mad. The green and orange stering objects are rotated so rotation is aroun Z and X axis - works fine. In the top left example I try to rotate the pivot instead.... 2) Rotating the pivot don't work. For all I can tell the pivot is not rotated. 3) Max Torque on motors are wrong. To isolate error source all the blue wheel is rotated by motor, the grey by global Torque. The global torque is 1.0, the max in motors are 0.02 - Yet the motors accelerate faster!?!? Also see BA thread: http://blenderartists.org/forum/showthread.php?239363-Steering-Test-Issues %%%

Lars Hallberg commented

2011-12-18 10:21:36 +01:00

Changed status to: 'Open'

Dalai Felinto commented

2011-12-21 20:01:05 +01:00

%%%bug confirmed: "there is some weirdness with it. Debug physics view shows that the Y angle has limits, although the limits checkbox is not checked."%%%

Aaron Carlisle commented

2019-06-29 02:15:21 +02:00

Added subscriber: @Blendify

Aaron Carlisle commented

2019-06-29 02:15:21 +02:00

Changed status from 'Open' to: 'Archived'

Aaron Carlisle closed this issue

2019-06-29 02:15:21 +02:00

Aaron Carlisle self-assigned this 2019-06-29 02:15:21 +02:00

Aaron Carlisle commented

2019-06-29 02:15:21 +02:00

This task is being closed because the BGE has been removed in Blender 2.8.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

6DoF constraint go mad on rotation round Y axes #29643