bullet3 | Bullet Physics SDK : real-time collision detection

 by   bulletphysics C++ Version: 3.25 License: Non-SPDX

kandi X-RAY | bullet3 Summary

kandi X-RAY | bullet3 Summary

bullet3 is a C++ library typically used in Simulation, Unity applications. bullet3 has no bugs, it has no vulnerabilities and it has medium support. However bullet3 has a Non-SPDX License. You can download it from GitHub.

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

            kandi-support Support

              bullet3 has a medium active ecosystem.
              It has 10771 star(s) with 2729 fork(s). There are 400 watchers for this library.
              It had no major release in the last 12 months.
              There are 106 open issues and 1767 have been closed. On average issues are closed in 44 days. There are 111 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of bullet3 is 3.25

            kandi-Quality Quality

              bullet3 has no bugs reported.

            kandi-Security Security

              bullet3 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              bullet3 has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              bullet3 releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            bullet3 Key Features

            No Key Features are available at this moment for bullet3.

            bullet3 Examples and Code Snippets

            Is the rotation matrix in Pybullet converting world coordinates into camera or camera to world?
            Pythondot img1Lines of Code : 11dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            rot_x_180 = np.array(
                    [1, 0, 0, 0],
                    [0, -1, 0, 0],
                    [0, 0, -1, 0],
                    [0, 0, 0, 1],
            tf_mat = rot_x_180 @ tf_world_to_camera
            view_matrix = tf_mat.flatten(order="F")
            How to project PyBullet simulation coordinates to rendered Frame pixel coordinates using OpenCV?
            Pythondot img2Lines of Code : 93dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import pybullet as p
            import numpy as np
            import time
            import pybullet_data
            import cv2
            import os
            VIDEO_RESOLUTION = (1280, 720)
            MY_COLORS = [(255,0,0), (0,255,0), (0,0,255)]
            def capture_frame(base_
            Python cannot load URDF file
            Pythondot img3Lines of Code : 2dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Different argparse arguments for each mode
            Pythondot img4Lines of Code : 73dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import argparse
            if __name__ == "__main__":
                # create the top-level parser
                my_parser = argparse.ArgumentParser(
                # create sub-parser
            Create multiple instances of pybullet client within a python class
            Pythondot img5Lines of Code : 25dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import pybullet as p
            import pybullet_utils.bullet_client as bc
            class Foo:
                def __init__(self, counter):
                    self.physicsClient = bc.BulletClient(connection_mode=p.DIRECT)
                def setGravity(self):

            Community Discussions


            Cmake vcpkg and Bullet
            Asked 2021-Jul-28 at 20:03

            I am very much lost here and could really use some help.

            I'm working on an Honours project for next year that involves a physics simulation using Bullet and Vulkan for rendering. After a few months of work I have most of the project functioning. It needs a lot of refactoring and cleaning which will be the next stage.

            I have been using a makefile but wish to migrate to CMake for a few reasons. Mainly because it seems to be the standard and because I want to compile for different OS's in the future (I'm running Linux but may need to deploy on Windows or Mac). Finally, I was recompiling the whole project for even a small change, which was beginning to become a problem as I started Unit Testing more.

            The old makefile is as follows :



            Answered 2021-Jul-28 at 20:03

            After all that.

            The set_and_include() error is a known issue and mathisloge over at vcpkg git said the Bullet package needs to be updated. The workaround is to change the calls to set().

            The ordering of the target libraries is important. The suggested way in the Bullet vcpkg package is :

            Source https://stackoverflow.com/questions/68547187


            twilio login - where do I get the secret?
            Asked 2021-Jul-26 at 07:01

            I am trying to learn how Twilio works, and uppon login I should login to the service and save that secret for usage in Android. See https://www.twilio.com/docs/voice/sdks/android/get-started#bullet3

            However - its not documented how to read that secret. On linux its saved using libsecret - which has a command line tool to read (libsecret-common contains a command line called `secret-tool), however its not documented how the secret is stored there (so retrieval is not trivial). Windows has a similar problem.

            So: where do I get the secret generated at login?



            Answered 2021-Jul-26 at 07:01

            Twilio developer evangelist here.

            If you can't find the api key and secret that are saved as part of the Twilio CLI, you can create another set of keys for your application. Open up the Twilio console here and create a new API key and secret and you can use those values.

            Source https://stackoverflow.com/questions/68525359


            Is there a way to add color to a bulleted list?
            Asked 2021-Feb-15 at 19:26

            I would like to add color to a bulleted list within a text portion of an RMarkdown script intended for HTML. I've tried many different things that all seem to work for a single line of text, but not for multiple lines. Here is an example. The first line "I am red text" ends up rendering in red, but the bulleted list do not:



            Answered 2021-Feb-15 at 19:26


            Following a new information in the comments by the OP, here is a solution for multi colored bullet lists:

            Source https://stackoverflow.com/questions/66181024


            fatal error: 'Eigen/Dense' file not found
            Asked 2021-Feb-06 at 18:27

            I am an Ultra Linux newbie, and I am trying to install this program and when I try to build the python wrapper I'd get this



            Answered 2021-Feb-06 at 18:11

            You're missing a dependency, Eigen, which is listed under 'Dependencies' in the DeepMimic readme.

            I see this problem has been encountered before: fatal error: Eigen/Dense: No such file or directory

            Source https://stackoverflow.com/questions/66080088


            Can't link to bullet physics library - LNK2019,LNK2001
            Asked 2021-Jan-14 at 15:37

            I have built bullet3-3.08 on Windows using cmake (commands have been executed from the build folder created in the bullet3-3.08 directory):



            Answered 2021-Jan-14 at 15:37

            As Bullet provides a BulletConfig.cmake file it is quite simple to link against Bullet.

            First you need to install Bullet (if not done so) and add -DCMAKE_PREFIX_PATH=C:/MyLibs/bullet3-3.08 (or the appropriate installation directory) to your cmake command line.

            Then in your CMakeLists.txt file you need to add

            Source https://stackoverflow.com/questions/65721707


            Building bullet3 on Windows 10 - not all libraries installed
            Asked 2021-Jan-13 at 14:07

            I have built bullet3-3.08 on Windows using cmake (commands have been executed from the build folder created in the bullet3-3.08 directory):



            Answered 2021-Jan-13 at 14:07

            When building bullet3-3.08 on Windows with Visual Studio project files the libraries are not installed by default.

            You need to add -DINSTALL_LIBS=ON to your command line to enable the installation, e.g.

            Source https://stackoverflow.com/questions/65596643


            XSLT 1.0 - Output Count of Value Uniqueness in a Node with Vanilla XSLT 1.0 or PHP XSLT
            Asked 2020-Dec-23 at 06:26

            I have a node in my XML data named this node contains a unique value, say 45678. Via XSLT, I'd like to only include this node's data, if 45678 is found more than once (1) in the complete data set. The end result can modify the existing node, or create a new one called . The end result of this data creates "Parent with children" products. The productId value groups all similar products together, the problem, is that sometimes there is only 1 product with that key, and I shouldn't create a parent product.

            IMPORTANT NOTE: Why I'm struggling so much, is 1st, I'm still brand new to XSL, and second, the current version of the engine does not allow me to use EXSLT, but it appears I can use PHP if necessary.

            Sample Data Set

            0243176820 This value you can see is used multiple times, and in this case it should be included in the result data, 1136194258 but this one is only included once.

            Sample Data Below



            Answered 2020-Dec-23 at 06:26

            To check the uniqueness of a value in XSLT 1.0, you can use a slight modification of Muenchian grouping.

            Here's a minimal example:

            XSLT 1.0

            Source https://stackoverflow.com/questions/65419245


            XSLT 1.0 - Check for an allowed set of values, and if found return which value was found
            Asked 2020-Dec-22 at 07:01

            The problem, I have data that exists in XML format, however, critical pieces of data are not supplied in separate nodes. Such as an item's size, color, fitment. While I'd normally provide what I've tried, I don't even know where to start. I've found a lot of examples on how to check for if a value is found, but nothing how to take that matched value, and then return it within an element. I can only use xslt 1.0

            This is a key section, I need help with, but lower in this post, I include full sample data and my current XSL Template



            Answered 2020-Dec-22 at 07:01

            This is a fine mess.

            It's a mess, because XSLT is designed to handle structured data, but your data provider chose not to take advantage of the structure XML provides. The type of processing required here would be much better handled by regex - however, regex support was only introduced in XSLT 2.0.

            That said, let's see what can be done:

            The first task:

            If contains Black, Flat Back, Chrome element finish shoud return the value that is found

            is relatively easy: assuming that the possible finish options are mutually exclusive, you could do:

            Source https://stackoverflow.com/questions/65397574


            Accessing/wrapping a struct inside a class in Cython
            Asked 2020-Dec-11 at 17:48

            I am trying to wrap the btCollisionWorld C++ class of the Bullet Physics library with Cython. I have had good success generally with the physics simulation parts of the library but I have run into trouble trying to wrap the collision detection parts.

            If you look at https://github.com/kripken/bullet/blob/master/src/BulletCollision/CollisionDispatch/btCollisionWorld.h you will find the .h file that contains the btCollisionWorld class that I am trying to wrap. This is actually a somewhat newer version than what I am working with but I believe it is the same in the important respects.

            (Also if you look at https://github.com/bulletphysics/bullet3/blob/master/examples/Raycast/RaytestDemo.cpp you will see an example C++ program that makes use of the library. That may be helpful additional context to show the kind of thing I want to be able to do in Cython, and what I can do for the normal physics part of Bullet Physics.)

            Generally I can access some parts of the btCollisionWorld class through Cython. For example, if I put the following in my .pxd file:



            Answered 2020-Dec-11 at 17:48

            I think you're just failing to distinguish between the type name and the member name. Something like this works for me (at least gets through the cython stage):

            Source https://stackoverflow.com/questions/65227200


            How can I style bulletpoint so that it has a blurred background and a solid center?
            Asked 2020-Aug-07 at 11:01

            I'm trying to style a bullet navigation bar for a slider and I want it to look like this:

            I've been trying to achieve this effect using a CSS radial-gradient as the background of the anchor, but the effect is not exactly the same as the inner dot should not fade.

            The code I do have right now:



            Answered 2020-Aug-07 at 10:48

            Just add color stops to your gradient

            Source https://stackoverflow.com/questions/63300166

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install bullet3

            You can download and install Bullet using the vcpkg dependency manager:. The Bullet port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please create an issue or pull request on the vcpkg repository.
            Click on build_visual_studio_vr_pybullet_double.bat and open build3/vs2010/0_Bullet3Solution.sln When asked, convert the projects to a newer version of Visual Studio. If you installed Python in the C:\ root directory, the batch file should find it automatically. Otherwise, edit this batch file to choose where Python include/lib directories are located.


            The entire collision detection and rigid body dynamics can be executed on the GPU. A high-end desktop GPU, such as an AMD Radeon 7970 or NVIDIA GTX 680 or better. We succesfully tested the software under Windows, Linux and Mac OSX. The software currently doesn't work on OpenCL CPU devices. It might run on a laptop GPU but performance will not likely be very good. Note that often an OpenCL drivers fails to compile a kernel. Some unit tests exist to track down the issue, but more work is required to cover all OpenCL kernels.
            Find more information at:

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