framerate independent smoothing example

gistfile1.txt

ofPoint pt;
ofPoint smoothPt;

//--------------------------------------------------------------
void ofApp::setup(){

}

//--------------------------------------------------------------
void ofApp::update(){

    if (ofGetElapsedTimeMillis() % 5000 < 2500){
        ofSetFrameRate(30);
    } else {
        ofSetFrameRate(60);

    }

    pt.x = 0.99f * pt.x + 0.01 * mouseX;
    pt.y = 0.99f * pt.y + 0.01 * mouseY;
    
    double dt = ofGetLastFrameTime();
    
    
    smoothPt.x = ofLerp(smoothPt.x, mouseX, 1 - powf(0.6,dt));
    smoothPt.y = ofLerp(smoothPt.y, mouseY, 1 - powf(0.6,dt));
}

//--------------------------------------------------------------
void ofApp::draw(){

    ofSetColor(255,0,0);
    ofCircle(pt, 10);
    
    ofSetColor(255,255,0);
    ofCircle(smoothPt, 5);
}