Search found 5677 matches

by coppelia
18 Mar 2024, 17:15
Forum: General questions
Topic: Ros2-CoppeliaSim and some bug.
Replies: 3
Views: 62

Re: Ros2-CoppeliaSim and some bug.

So you have several problems in that scene: The upper and lower cuboids are colliding and friction between them may influence the motion. Make sure that either they are not colliding, or that the upper cuboid is not respondable (or does not generate a collision response with the lower cuboid) Since ...
by coppelia
18 Mar 2024, 16:46
Forum: General questions
Topic: path following object
Replies: 4
Views: 40

Re: path following object

Hello,

there is a demo scene that does exactly what you want, in various versions: scenes/movingAlongAPath-lua.ttt

Cheers
by coppelia
18 Mar 2024, 16:40
Forum: General questions
Topic: Designing an Omnidirectional Mobile Robot: Confusion Arising from KUKA Omnirob Model
Replies: 8
Views: 161

Re: Designing an Omnidirectional Mobile Robot: Confusion Arising from KUKA Omnirob Model

I'd go with a mass for each of the spheres of 2.5 kg. Use the same mass-less inertia for both. If stability is not good with the used engine, increase their mass and/or inertia somewhat.

Cheers
by coppelia
18 Mar 2024, 16:38
Forum: Bug reports
Topic: about sim.buildPose sim.matrixToPose
Replies: 1
Views: 26

Re: about sim.buildPose sim.matrixToPose

Hello,

given two quaternions Q1 = [Qx, Qy, Qz, Qw] and Q2 = [-Qx, -Qy, -Qz, -Qw], the resulting rotation is the same (but using an opposite axes and a reverse angle). So effectively Q1 == Q2

Cheers
by coppelia
15 Mar 2024, 20:16
Forum: Bug reports
Topic: MuJoCo Cable model not working
Replies: 4
Views: 80

Re: MuJoCo Cable model not working

What happens if you use a different engine for the same scene? is it similar, worse, or better?

Cheers
by coppelia
15 Mar 2024, 20:14
Forum: General questions
Topic: Color detection using blobTo3dPosition sensor
Replies: 1
Views: 29

Re: Color detection using blobTo3dPosition sensor

Hello, the color (or the order of the blobs) is not relevant, since there is no blob order. Looking at the simVision.blobDetectionOnWorkImg function, you'll notice that for each blob, following will be returned: the blob relative size the blob orientation the blob relative position X the blob relati...
by coppelia
15 Mar 2024, 20:03
Forum: General questions
Topic: How can I create my own path object through code?
Replies: 2
Views: 44

Re: How can I create my own path object through code?

MarkusPelt03 wrote: 14 Mar 2024, 20:28...Other than that, how can I search for "path" in the forum if it ignores the search term? Thanks.
Not sure I understand... you mean searching for "path" does not work?

Cheers
by coppelia
15 Mar 2024, 20:01
Forum: General questions
Topic: Designing an Omnidirectional Mobile Robot: Confusion Arising from KUKA Omnirob Model
Replies: 8
Views: 161

Re: Designing an Omnidirectional Mobile Robot: Confusion Arising from KUKA Omnirob Model

Only the wheel sphere dimensions are relevant: the insideSpheres are not respondable (i.e. they do not react to collisions), and thus only their mass and inertia matters.

Cheers
by coppelia
15 Mar 2024, 19:54
Forum: General questions
Topic: Ros2-CoppeliaSim and some bug.
Replies: 3
Views: 62

Re: Ros2-CoppeliaSim and some bug.

Hello,

from the video, it looks like the joint gets target positions from two different sources. Best would be if you shared the scene file, so that we could have a closer look at it.

Cheers
by coppelia
13 Mar 2024, 08:23
Forum: General questions
Topic: Shortest distance
Replies: 2
Views: 55

Re: Shortest distance

You can use sim.checkDistance(shapeHandle, dummyHandle), where dummyHandle is the handle of a dummy object located at the robot's reference frame.

Cheers