nickhardeman / ofxbullet Goto Github PK

I think,
tr.setRotation( btQuaternion(btVector3(a_rot.x(), a_rot.y(), a_rot.z()), a_rot.w()) );
is not quaternion, it is axis-angle representation.
Maybe,
tr.setRotation(btQuaternion(a_rot.x(), a_rot.y(), a_rot.z(), a_rot.w()) );
is correct. Could you please check?

for example.
void ofxBulletCylinder::create( btDiscreteDynamicsWorld* a_world, ofVec3f a_loc, ofQuaternion a_rot, float a_mass, float a_radius, float a_height ) {
btTransform tr = ofGetBtTransformFromVec3f( a_loc );
//tr.setRotation( btQuaternion(btVector3(a_rot.x(), a_rot.y(), a_rot.z()), a_rot.w()) );
tr.setRotation( btQuaternion(a_rot.x(), a_rot.y(), a_rot.z(), a_rot.w()) );
}

Hi I'm getting a bunch of errors while trying to compile some of the examples (EventExample in this case):

any idea about the cause?

In file included from /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletWorldRigid.h:14:0, from /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBullet.h:11, from /mnt/FILES/CODE/OF/OF_098/apps/myApps/EventsExample/src/ofApp.h:4, from /mnt/FILES/CODE/OF/OF_098/apps/myApps/EventsExample/src/main.cpp:2: /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h:13:47: error: ‘glm’ has not been declared static btTransform ofGetBtTransformFromVec3f( glm::vec3 a_v ) { ^ /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h:13:63: error: expected ‘,’ or ‘;’ before ‘{’ token static btTransform ofGetBtTransformFromVec3f( glm::vec3 a_v ) { ^ /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h:34:80: error: ‘glm’ has not been declared gidBody* ofGetBtRigidBodyFromCollisionShape(btCollisionShape* a_cs, glm::vec3 a ^ /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h:34:90: error: expected ‘,’ or ‘...’ before ‘a_loc’ fGetBtRigidBodyFromCollisionShape(btCollisionShape* a_cs, glm::vec3 a_loc, floa ^ /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h: In function ‘btRigidBody* ofGetBtRigidBodyFromCollisionShape(btCollisionShape*, int)’: /mnt/FILES/CODE/OF/OF_098/addons/ofxBullet/src/ofxBulletUtils.h:35:43: error: ‘a_loc’ was not declared in this scope btTransform tr=ofGetBtTransformFromVec3f(a_loc);

here is the build transcript:

http://pastebin.com/0DXmLF42

openframeworks/openFrameworks#4397

Compiling empty example in Code::Blocks under Debian gives..

../../../../addons/ofxBullet/libs/bullet2.8.1/include/BulletMultiThreaded/GpuSoftBodySolvers/DX11/btSoftBodySolverBuffer_DX11.h:19:21: fatal error: windows.h: No such file or directory
#include <windows.h>

Some compile variable for Bullet that is wrong for Linux environment?

Hey Nick,

Not sure this is a ofxBullet problem, but I've been trying to use ofxOpenCL + ofxBullet together and I get a runtime crash every time... is there any way to disable Bullet's use of openCL so it only uses the GPU?

Thanks for the addon man, its going to save me weeks of time.

Reza

I'm having trouble compiling

.../addons/ofxBullet/libs/bullet2.8.1/include/BulletMultiThreaded/GpuSoftBodySolvers/DX11/btSoftBodySolverVertexBuffer_DX11.h:22:10: 'windows.h' file not found`

The windows.h file is not found so I'm thinking the project configuration is off for iOS in XCode6.

Here is what I'm doing :

1. Copied ofxBullet into my addons folder
2. Used the Project Generator to create a new project
3. Tried to compile this new project with XCode6

oF 0.8.0

void ofApp::draw(){
...
    ofSetColor(0, 0, 255);
    ofDrawSphere(cam.getPosition()+castRay*600, 10);

    ofSetColor(255, 100, 200);
    ofDrawSphere(rayWorldPos, 10);

    // line from origin-zero to castRay pos, it pass through rayWorldPos
    ofSetColor(0, 255, 0);
    ofSetLineWidth(5);
    ofLine(ofVec3f(0), cam.getPosition()+castRay*600);
...
}

///////////////
void ofApp::touchDown(ofTouchEventArgs & touch){
    ofxBulletRaycastData data = world.raycastTest(touch.x, touch.y);

    if ( data.bHasHit ){
        MyBodyInfo* info = (MyBodyInfo*)data.userData;
        info->c = ofColor(0, 255, 100);

        rayWorldPos = data.rayWorldPos;

    }

    castRay = cam.screenToWorld( ofVec3f(touch.x, touch.y, 0) );
    castRay = castRay - cam.getPosition();
    castRay.normalize();
}

something wrong with this?

world->rayTest( rayStart, rayEnd, rayCallback ); 

Every time after I quit any application using ofBullet I get the following message in the console

**
Assertion failed: (m_constraintRefs.size()==0), function btRigidBody, file /Users/NickHardeman/Desktop/bullet-2.77 2/src/BulletDynamics/Dynamics/btRigidBody.h, line 175.
sharedlibrary apply-load-rules all
warning: Could not find object file "/Developer/usr/lib/gcc/i686-apple-darwin10/4.0.1/libgcc.a(_eprintf.o)" - no debug information available for "/var/tmp/gcc_40/gcc_40-5494211/src/gcc/libgcc2.c".

warning: Could not find object file "/Users/theo/Documents/CODE/__OPENFRAMEWORKS/gitOF/openFrameworks/apps/devApps/macDragDropExample/buildGlutFrameworkHackedWindowLevel10.4/libForeground.a(macx_foreground.o)" - no debug information available for "/Users/mcast/Code/GLUT-ToPost/macx_foreground.m".
**
And also points to the following thread

I don't know what is going on, any ideas?

OF 0.9.0 will be shipping with libc++ for OSX 32-bit which will require libraries built with libstdc++ to be recompiled in order to link properly. @arturoc said he might be able to help with Bullet.

I recently was able to get ofxBullet working under vs2012, but the fix I had to make to your code is something that I can't possibly know the implications of just yet. It has to do with aligned types in bt that vc11 just doesn't know how to deal with. Everywhere you use a bt_transform needs to be passed by reference because it is an aligned type. Last time I dealt with this it had to do with containers and MS not really keeping in line with the STL, and basically the compiler doesn't know how to deal with containers of values of aligned types. But once again, I don't know what this would do to the existing code base, as passing by reference is a notorious sleeper agent for bugs. I'll keep testing and seeing what's up, but it looks pretty promising. It's a total hack, but it hasn't unexpectedly broken yet.

drawing all the debug lines in a VBO will greatly increase the performance.
suggested in this stackoverflow post,
http://stackoverflow.com/questions/14008295/how-to-implement-the-btidebugdraw-interface-of-bullet-in-opengl-4-0

hey @NickHardeman,
nice addon man!

i had some errors compiling the ios examples.

• iOS6.1 Base SDK
• iPhone simulator 5.0
• Xcode 4.6.3

found this this to work,

• add the 'libs' folder into ofxBullet addon folder in xcode.
• remove,
  • ofxBullet/libs/bullet2.8.1/include/BulletMultiThreaded/GpuSoftBodySolvers/DX11
  • ofxBullet/libs/bullet2.8.1/include/BulletMultiThreaded/GpuSoftBodySolvers/OpenCL

not sure if this is the best solution but it worked for me.

thanks for the great add-on.

is it possible to apply a texture to the bunny in the SoftBodyMeshExample?
it would be great to hear your advice on how to achieve that.

thanks, stephan

Hey,

first of all thanks for your work here. I compiled the bulletlib2.81 without the MultiThreaded and MiniCL parts using codeblocks in windows. I then used the project generator, added ofxBullet, also removed MultiThreaded and MiniCL from search directories and project and compiled an empty project. That worked just fine, just had to change two include paths for glu.h and glut.h. I copied the source from the SimpleExample and tried to run it, but it crashes right on start up. Funny enough: commenting out just the ofxBullet parts in testApp.cpp doesn't change anything. I also had to comment the camera positioning. Using simple of methods like ofSetColor, ofLine, ofBox, ect works just fine though

I think it might not be very ofxBullet specific, but maybe some one has an idea what to try next or how to debug that crash?

thanks in advance!

Any thoughts on upgrade to Bullet3?

Hey,

I get the following error for each of the examples. Any idea what will help?
I also tried to create the Visual Studio files again with the project generator, but it remains the same..

transformGL() bug when use ofGLProgrammableRender. ( If use this render, all matrix function will not work( eg. glPushMatrix, glMultMatrix, glTranslate, glRotate )

Like:

//--------------------------------------------------------------
void ofxBulletBaseShape::transformGL() {
    btScalar    m[16];
    ofGetOpenGLMatrixFromRigidBody( getRigidBody(), m );

    // not work with ofGLProgrammableRender
    // matrix was calculate in shader
    //glPushMatrix();
    //glMultMatrixf( m );

    // I think is better to use oF Matrix function
    ofPushMatrix();
    ofMultMatrix(ofMatrix4x4(m));
}

//--------------------------------------------------------------
void ofxBulletBaseShape::restoreTramsformGL() {
    //glPopMatrix();
    ofPopMatrix();
}

I think we should use more oF function. :)

Hi there,
Firstly thank you for creating this project. It looks really awesome.

Unfortunately I'm struggling to run any of the examples included with the library, with the exception of the 'emptyExample' project, which runs fine.

When running the SimpleExample, the project builds and runs, but straight away gives this error:

btMatrix3x3.h
Line 360
Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

Googling turns up this forum post...
http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=8514

...But that's as far as I've got. I'm completely stumped by this. Any ideas?

Many thanks,

OF 0.8.4, Xcode 6.1, Mac OS 10.9.5

Hi Nick,

i am experimenting some unexpected results when trying this add-on on Android.

Everything worked fine with the old add-on so i guess it might be related with GL ES 2.

when loading models, in an Android context (it works fine in the desktop version), it looks like the physics are not generated from the mesh (and the model has only one --> it's the oflogo.dae). The model is shown but it goes crazy and keeps moving around the 3D space.

Instead the right 3D model, there is an "invisible" object which determines the physics.

I think there might be some issue with these lines because getNumMeshes() used to return 1, and now returns variable values from -1 to 30k:

for (int i = 0; i < 3; i++) {
logos.push_back( new ofxBulletCustomShape() );
startLoc = ofVec3f( ofRandom(-5, 5), ofRandom(0, -hwidth+5), ofRandom(-5, 5) );

           if(i == 0) {
                   for(int i = 0; i < assimpModel.getNumMeshes(); i++) {
                           logos[i]->addMesh(assimpModel.getMesh(i), scale, true);
                   }
           } else {
                   logos[i]>init( (btCompoundShape*)logos[0]>getCollisionShape(), logos[0]->getCentroid() );
           }
           logos[i]->create( world.world, startLoc, startRot, 3. );
           logos[i]->add();
   }

any ideas?

Bad access in btMatrix3x3.h
breaks on line 360 with bad access EXC_1386_GPFLT.
On oF 0.8.4, Xcode 6.0.1, build for 10.7