basic ofxBox2d circle

gistfile1.txt

//--------------------------------------------------------------
void ofApp::setup() {
    
    // first init box2d
    box2d.init();
    
    // set the gravity
    box2d.setGravity(0, 10);
    
    // create bounds x,y,w,h
    box2d.createBounds();

    // enable mouse grabbing
    box2d.registerGrabbing();
    
    // set the physics of the circle
    circle.setPhysics(1, 0.7, 0.7);
    
    // set the position and size of circle then add to the world
    circle.setup(box2d.getWorld(), ofGetWidth()/2, ofGetHeight()/2, 150);
    
}

//--------------------------------------------------------------
void ofApp::update() {
    
    // update every frame
    box2d.update();
}

//--------------------------------------------------------------
void ofApp::draw() {
    
    // draw default circle
    circle.draw();
}