// you can call this function directly if you wish to use the same collision object for multiple rigid bodies,
// which will increase performance //
//--------------------------------------------------------------
void ofxBulletBaseShape::create( btDiscreteDynamicsWorld* a_world, btCollisionShape* a_colShape, btTransform &a_bt_tr, float a_mass ) {
if(a_world == NULL) {
ofLog(OF_LOG_ERROR, "ofxBulletSphere :: create : a_world param is NULL");
return;
}
_mass = a_mass;
_world = a_world;
_bCreated = true;
_rigidBody = ofGetBtRigidBodyFromCollisionShape( a_colShape, a_bt_tr, a_mass);
setProperties(.4, .75);
setDamping( .25 );
}
//--------------------------------------------------------------
void ofxBulletCustomShape::add() {
_bAdded = true;
btTransform trans;
trans.setIdentity();
for(int i = 0; i < centroids.size(); i++) {
_centroid += centroids[i];
}
if(centroids.size() > 0)
_centroid /= (float)centroids.size();
btVector3 shiftCentroid;
for(int i = 0; i < shapes.size(); i++) {
shiftCentroid = btVector3(centroids[i].x, centroids[i].y, centroids[i].z);
shiftCentroid -= btVector3(_centroid.x, _centroid.y, _centroid.z);
trans.setOrigin( ( shiftCentroid ) );
((btCompoundShape*)_shape)->addChildShape( trans, shapes[i]);
}
_rigidBody = ofGetBtRigidBodyFromCollisionShape( _shape, _startTrans, _mass);
createInternalUserData();
_world->addRigidBody(_rigidBody);
setProperties(.4, .75);
setDamping( .25 );
}