Search found 71 matches

by Ehsanizadi
Fri May 02, 2014 2:49 pm
Forum: General Bullet Physics Support and Feedback
Topic: Monitoring forces between rigid bodies
Replies: 3
Views: 2739

Monitoring forces between rigid bodies

Hi, In the hello world example I am trying to monitor forces between the falling sphere and the ground. So I added this command in the simulation loop: cout<<"Fz= "<< fallRigidBody->getTotalForce().getZ() <<endl; But I get always the force of "Fz= 0". Even after sphere collided the ground! whats the...
by Ehsanizadi
Fri May 02, 2014 7:40 am
Forum: General Bullet Physics Support and Feedback
Topic: Wrong fall height calculation
Replies: 4
Views: 2611

Wrong fall height calculation

Hi, I just started working with bullet. (Actually, I had a relatively hard time understanding stepSimulation function and its related arguments.) I began with "helloWorld" tutorial, however, I have found a small issue with calculation of the falling height. I have 2 questions: 1) With the default pa...
by Ehsanizadi
Tue Apr 15, 2014 9:38 am
Forum: Physics authoring tools, serialization, standards and related topics
Topic: Bullet in blender: capabilities and limitations
Replies: 1
Views: 6449

Bullet in blender: capabilities and limitations

Hi all, I am new to both blender and bullet. I am doing a research dealing with capabilities of physics engines (e.g Bullet physics) and their accuracy in simulating physical phenomenons as an engineering tool. During my studies I found out Bullet is integrated in blender and made it very easy to wo...
by Ehsanizadi
Thu Feb 20, 2014 3:09 pm
Forum: Physics authoring tools, serialization, standards and related topics
Topic: What kind of damping Bullet uses? :?:
Replies: 2
Views: 6401

Re: What kind of damping Bullet uses? :?:

Mybe I need to clarify better:

There are different kinds of damping: one is "mass damping" which is a coefficient multiplied by velocity; and "non-viscous damping" which is a coefficient which multiplied by unbalanced force.

What is the type of damping Bullet physics uses? :?: :?:
by Ehsanizadi
Mon Feb 10, 2014 4:19 pm
Forum: Physics authoring tools, serialization, standards and related topics
Topic: What kind of damping Bullet uses? :?:
Replies: 2
Views: 6401

What kind of damping Bullet uses? :?:

Hey,

I am new to bullet and I started using it in blender.

In the physics engine tab, I see damping can be specified for both "translation" and "rotation"
My question is that does bullet use the concept of "mass damping" or "non-viscous" damping? :?:

Thank you very much in advance.

Ehsan
by Ehsanizadi
Mon Dec 09, 2013 2:20 pm
Forum: General Bullet Physics Support and Feedback
Topic: Error in compilation
Replies: 5
Views: 2894

Re: Error in compilation

Bullet doesn't use SDL. You forgot to add the OpenGLSupport library. You better use a build system that ships with Bullet, such as premake or cmake. It should compile out-of-the-box. See the instructions in the docs folder. How to add OpenGLSupport library in the command I should type? (where shoul...
by Ehsanizadi
Tue Dec 03, 2013 9:56 am
Forum: General Bullet Physics Support and Feedback
Topic: The equations Bullet Physics uses for solving physics system
Replies: 1
Views: 1499

The equations Bullet Physics uses for solving physics system

Hi, I'm student and I am going to evaluate whether Bullet Physics is capable of simulating physical phenomenon accurately or not. But before that, I need to study and to know what kind of equations Bullet uses to solve physical systems. For instance, for friction, for rigid body and soft body. How d...
by Ehsanizadi
Tue Dec 03, 2013 9:17 am
Forum: General Bullet Physics Support and Feedback
Topic: Error in compilation
Replies: 5
Views: 2894

Re: Error in compilation

I installed the libraries now I get another error: /tmp/ccuXddiJ.o: In function `main': main.cpp:(.text+0x61): undefined reference to `glutmain(int, char**, int, int, char const*, DemoApplication*)' /tmp/ccuXddiJ.o: In function `GlutDemoApplication::GlutDemoApplication()': main.cpp:(.text._ZN19GlutD...
by Ehsanizadi
Tue Dec 03, 2013 9:02 am
Forum: General Bullet Physics Support and Feedback
Topic: Error in compilation
Replies: 5
Views: 2894

Re: Error in compilation

nullChar wrote:This isn't really a Bullet build issue, but a dependencies problem. You're trying to link the SDL and SDL_image libraries, but they don't exist on your machine.
Find the library files for SDL and place them within your library directories and it should link correctly.

Thanks
by Ehsanizadi
Mon Dec 02, 2013 4:19 pm
Forum: General Bullet Physics Support and Feedback
Topic: Error in compilation
Replies: 5
Views: 2894

Error in compilation

Hey, I am very new to Bullet (a few hours!, version 2.82), linux (I am using Ubuntu 13.10) and programming! I just installed Bullet physics on my ubuntu. I tried to compile the Helloworld example using this command in the shell: g++ *.cpp -lSDL -lGL -lGLU -lSDL_image -lBulletSoftBody -lBulletDynamic...