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src/attractor.cpp

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+#include "attractor.h"
+
+Attractor::Attractor()
+{
+	x = 0;
+	y = 0;
+}
+
+//--------------------------------------------------------------------------------------
+
+Attractor::~Attractor()
+{
+
+}
+
+//--------------------------------------------------------------------------------------
+
+
+
+float Attractor::getY() {
+	return y;
+}
+
+
+float Attractor::getX() {
+	return x;
+}
+
+
+void Attractor::setX(float xNew) {
+	x = xNew;
+}
+
+void Attractor::setY(float yNew) {
+	y = yNew;
+}
+
+void Attractor::setup(float xSetup, float ySetup) {
+	x = xSetup;
+	y = ySetup;
+}
+

src/attractor.h

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+//
+//  attractor.h
+//  particleSystem
+//
+
+#include <stdio.h>
+
+
+class Attractor {
+
+
+public:
+
+	Attractor();
+	~Attractor();
+
+
+	float getX();
+	float getY();
+
+	void setX(float x);
+	void setY(float y);
+
+	void setup(float x, float y);
+
+
+private:
+
+	//ofVec2f direction
+	float x;
+	float y;
+
+	float force;
+};

src/main.cpp

@@ -0,0 +1,9 @@
+#include "ofMain.h"
+#include "ofApp.h"
+
+//========================================================================
+int main() {
+	ofSetupOpenGL(1000, 1000, OF_WINDOW);			// <-------- setup the GL context
+	ofRunApp(new ofApp());
+}
+

src/ofApp.cpp

@@ -0,0 +1,151 @@
+#include "ofApp.h"
+
+//--------------------------------------------------------------
+void ofApp::setup() {
+
+	//Initialize 8 empty attractrs
+	for (int i = 0; i < 8; i++)
+	{
+		attractors.push_back(new Attractor);
+	}
+
+	//OSC reciever port setup
+	receiver.setup(PORT);
+
+	//Black background
+	ofSetBackgroundColor(0, 0, 0);
+
+	ofSetFrameRate(60);
+
+	birthCount = 0;
+
+	//attractors.at(0)->setup(200, 200);
+}
+
+//--------------------------------------------------------------
+void ofApp::update() {
+
+	// *** OSC RECEIVER  ***
+	while (receiver.hasWaitingMessages()) {
+
+		ofxOscMessage contourCentroids;
+		receiver.getNextMessage(&contourCentroids);
+		oscMsg = ofToString(contourCentroids);
+
+		//Get active ammount of attractors (nBlobs) and their x & y coordinates
+		//Exp. OSC Message: " /centroidsOfBlob ammount xValue, yValue"
+		if (contourCentroids.getAddress() == "/centroidsOfBlob") {
+			nBlobs = contourCentroids.getArgAsInt(0);
+			for (int i = 1; i <= nBlobs; i++) {
+				xOfCentroid = contourCentroids.getArgAsFloat(i * 2 - 1) * ofGetWindowWidth();
+				yOfCentroid = contourCentroids.getArgAsFloat(i * 2) * ofGetWindowHeight();
+
+				attractors.at(i - 1)->setup(xOfCentroid, yOfCentroid);
+			}
+		}
+		//Delete all Attractors on command
+		if (contourCentroids.getAddress() == "/checkin") {
+			for (int i = 0; i < 8; i++) {
+				attractors.at(i)->setup(0, 0);
+			}
+		}
+	}
+
+	// *** PARTICLE EMITTER ***
+
+	//Capture time based on FrameTime
+	double deltaT = ofGetLastFrameTime();
+	birthCount += deltaT;
+
+	//Birth control for new particles
+	if (birthCount > 0.001) {
+		for (int i = 0;i < 4;i++) {
+			system.push_back(new thParticle);
+			system.back()->setup(ofVec2f(ofGetWidth()*.5, ofGetHeight()*.5));
+		}
+		birthCount = 0;
+	}
+
+
+	for (int p = 0; p < system.size();)
+	{
+		//Upate particle system /w all active attractors
+		system.at(p)->update(deltaT, &attractors);
+
+		//Delete particles, that reached max Age
+		if (system.at(p)->getAgeNorm() > 4) {
+			delete system.at(p);
+			system.erase(system.begin() + p);
+		}
+		else {
+			p++;
+		}
+	}
+}
+
+
+
+//--------------------------------------------------------------
+void ofApp::draw() {
+
+	//Draw particle system
+	for (int p = 0; p < system.size(); p++) {
+		system.at(p)->draw();
+	}
+
+
+	//Capture time based on FrameTime
+	double deltaT = ofGetLastFrameTime();
+	time += deltaT;
+
+	// Delete inactive attractors after 4 seconds based on Frametime
+	if (time > 2) {
+		for (int i = 0; i < 8; i++) {
+			//attractors.at(i)->setup(0, 0);
+			time = 0;
+		}
+	}
+
+	// *** DEBUG INFO ***
+
+	//All 8 Attractors with x | y coordinates 
+	for (int i = 0; i < 8; i++) {
+
+		//string x = ofToString(attractors.at(i)->getX());
+		//string y = ofToString(attractors.at(i)->getY());
+
+		//ofDrawBitmapString("x: " + x + " y: " + y, 100, 100 + i * 20);
+	}
+	//Recieved OSC messages
+	//ofDrawBitmapString("OSC: " + ofToString(oscMsg),100, 275);
+	//Elapsed time since last clear of attractors
+	//ofDrawBitmapString("Time: " + ofToString(time),100, 300);
+	//Current FPS
+	//ofDrawBitmapString("FPS: " + ofToString(ofGetFrameRate()), 100, 325);
+}
+
+//--------------------------------------------------------------
+void ofApp::keyPressed(int key) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::keyReleased(int key) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseMoved(int x, int y) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mousePressed(int x, int y, int button) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseReleased(int x, int y, int button) {
+
+}
+

src/ofApp.h

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+#pragma once
+
+#include "ofMain.h"
+#include "particle.h"
+#include "ofxOsc.h"
+#include "ofxGui.h"
+
+//OSC Reciever PORT & HOST IP
+#define PORT 12345
+#define HOST "172.20.10.2"
+
+class ofApp : public ofBaseApp {
+
+public:
+	void setup();
+	void update();
+	void draw();
+
+	void keyPressed(int key);
+	void keyReleased(int key);
+	void mouseMoved(int x, int y);
+	void mousePressed(int x, int y, int button);
+	void mouseReleased(int x, int y, int button);
+
+private:
+	
+	// OSC Receiver
+
+	string oscMsg;
+	ofxOscReceiver  receiver;
+	float timeSent, timeReceived;
+
+	int nBlobs;
+	int blobCount;
+
+	float xOfCentroid;
+	float yOfCentroid;
+
+	vector<thParticle*> system;
+	vector<Attractor*> attractors;
+	float birthCount;
+	double time;
+
+};

src/particle.h

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+#pragma once
+
+#include "ofMain.h"
+#include "attractor.h"
+
+class thParticle
+{
+
+public:
+
+	thParticle();
+	~thParticle();
+
+	void setup(ofVec2f position);
+
+	void update(float deltaT, vector<Attractor*>* attractors);
+	//    void update(float deltaT, ofVec2f attractor);
+											//Partikel wird komplett upgedated (Bewegung, Farbe, etc...)
+											//deltaT Zeitintervall seit letztem Update
+	void draw();                        //Partikel anzeigen
+
+	float getAgeNorm();
+	float getMaxLife();
+	ofImage tex;
+
+private:
+
+	int counterOfActiveAttractors;
+
+	ofVec2f vel;
+	ofVec2f position;
+
+	float maxLife;
+	float age;
+
+	float size;
+	float mass;
+
+	int blobCounterInParticle;
+
+	ofColor color;
+
+};