John Whitney tribute "sunflower" developed in OpenFrameworks

testApp.cpp

#include "testApp.h"

//--------------------------------------------------------------
void testApp::setup(){
        
    ofSetVerticalSync(true);
    ofBackground(240);
    ofSetCircleResolution(100);
    ofEnableAlphaBlending();
    ofSetFrameRate(30);

}

//--------------------------------------------------------------
void testApp::update(){}

//--------------------------------------------------------------
void testApp::draw(){
        
        float xorig = ofGetWidth()/2;
        float yorig = ofGetHeight()/2;
        
    ofFill();
    ofBeginShape();
        for (int i = 0; i < 200; i++){
                float radius = 10 + i * 2;
                float angle = ofGetElapsedTimef() * (1 + i / 30.0);
                float x = xorig + radius * cos(angle);
                float y = yorig + radius * -sin(angle);
                //ofSetColor(41,171,226,50);
        ofSetColor(247, 219, 126,250);
        ofVertex(x, y);
        }
    ofEndShape();
                
    ofNoFill();
    ofSetLineWidth(1);
    ofBeginShape();
        for (int i = 0; i < 200; i++){
                float radius = 5 + i * 2;
                float angle = ofGetElapsedTimef() * (1 + i / 31.0);
                float x = xorig + radius * -cos(angle);
                float y = yorig + radius * sin(angle);
                ofSetRectMode(OF_RECTMODE_CENTER);
                ofSetColor(20,100);
        ofVertex(x, y);
        }
    ofEndShape();

}

//--------------------------------------------------------------
void testApp::keyPressed(int key){
    if(key=='f' || key=='F'){
        ofToggleFullscreen();
    }
}

//--------------------------------------------------------------
void testApp::keyReleased(int key){}
void testApp::mouseMoved(int x, int y ){}
void testApp::mouseDragged(int x, int y, int button){}
void testApp::mousePressed(int x, int y, int button){}
void testApp::mouseReleased(int x, int y, int button){}
void testApp::windowResized(int w, int h){}

testApp.h

#ifndef _TEST_APP
#define _TEST_APP


#include "ofMain.h"

class testApp : public ofBaseApp{

        public:
                void setup();
                void update();
                void draw();

                void keyPressed  (int key);
                void keyReleased(int key);
                void mouseMoved(int x, int y );
                void mouseDragged(int x, int y, int button);
                void mousePressed(int x, int y, int button);
                void mouseReleased(int x, int y, int button);
                void windowResized(int w, int h);

};

#endif