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main.cpp

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+#include "ofMain.h"
+#include "ofApp.h"
+
+//========================================================================
+int main() {
+	ofSetupOpenGL(2000, 2000, OF_WINDOW);			
+	ofRunApp(new ofApp());
+}
+

ofApp.cpp

@@ -0,0 +1,261 @@
+#include "ofApp.h"
+
+//--------------------------------------------------------------
+void ofApp::setup() {
+	ofSetVerticalSync(true);
+
+	//Initialize 8 empty attractrs
+	for (int i = 0; i < 8; i++)
+	{
+		attractors.push_back(new Attractor);
+	}
+
+	//OSC reciever port setup
+	receiver.setup(PORT);
+
+	varSystem = true;
+	trails = true;
+	history = 0.95;
+	num = 1000;
+	sys.assign(num, Particle());
+
+	currentMode = PARTICLE_MODE_DEFAULT;
+	currentModeDisp = "PARTICLE_MODE_DEFAULT";
+
+	//Black background
+	ofSetBackgroundColor(0, 0, 0);
+	ofSetFrameRate(60);
+	birthCount = 0;
+	int w = ofGetWidth();
+	int h = ofGetHeight();
+	fbo.allocate(w, h, GL_RGB);
+	//attractors.at(0)->setup(600, 600);
+
+	attractors.at(1)->setup(200, 200);
+	attractors.at(2)->setup(400, 400);
+	attractors.at(3)->setup(500, 500);
+}
+
+//--------------------------------------------------------------
+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;
+
+	if (varSystem == true) {
+		//Birth control for new particles
+		if (birthCount > 0.001) {
+			for (int i = 0;i < 4;i++) {
+				system.push_back(new Particle);
+				system.back()->setup(currentMode);
+			}
+			birthCount = 0;
+		}
+
+
+		for (int p = 0; p < system.size();)
+		{
+			//Upate particle system /w all active attractors
+			system.at(p)->update(deltaT, &attractors, system);
+
+			//Delete particles, that reached max Age
+			if (system.at(p)->getAgeNorm() > 4) {
+				delete system.at(p);
+				system.erase(system.begin() + p);
+			}
+			else {
+				p++;
+			}
+		}
+	}
+	else {
+		ofSeedRandom(39);
+	}
+}
+
+//--------------------------------------------------------------
+void ofApp::reset() {
+
+	for (int p = 0; p < system.size();)
+	{
+			system.erase(system.begin() + p);
+	}
+}
+
+
+//--------------------------------------------------------------
+void ofApp::draw() {
+	if (varSystem == false) {
+		vector<ofVec2f> system;
+		for (int i = 0; i < 1000; i++) {
+			ofVec2f particle(ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.0005), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.0005), 0, 1, 0, ofGetHeight()));
+			system.push_back(particle);
+		}
+
+		for (int out = 0; out < system.size(); out++) {
+			for (int in = out + 1; in < system.size(); in++) {
+				if (system[out].distance(system[in]) < 60) {
+					ofDrawLine(system[out], system[in]);
+				}
+			}
+		}
+
+		for (int i = 0; i < system.size(); i++) {
+
+			ofDrawCircle(system[i], ofRandom(0.5, 3));
+		}
+	}
+	
+	if (trails == true) {
+		fbo.begin();
+		ofEnableAlphaBlending();         //Enable transparency
+
+		float alpha = (1 - history) * 255;
+		ofSetColor(0, 0, 0, alpha);
+		ofFill();
+		ofRect(0, 0, ofGetWidth(), ofGetHeight());
+
+		ofDisableAlphaBlending();        //Disable transparency
+		//Draw particle system
+		for (int p = 0; p < system.size(); p++) {
+			system.at(p)->draw();
+		}
+		fbo.end();
+	}
+	else {
+		//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;
+		}
+	}
+	fbo.draw(0, 0);
+	// *** DEBUG INFO ***
+	ofSetColor(230);
+	//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);
+	//Current Mode
+	ofDrawBitmapString("Current Effect: " + currentModeDisp, 100, 350);
+}
+
+//--------------------------------------------------------------
+void ofApp::keyPressed(int key) {
+	//Key press 1 to trigger default particle Mode
+	if (key == '1') {
+		currentMode = PARTICLE_MODE_DEFAULT;
+		currentModeDisp = "PARTICLE_MODE_DEFAULT";
+		varSystem = true;
+		reset();
+	}
+	//Key press 2 to trigger attractor particle Mode
+	if (key == '2') {
+		currentMode = PARTICLE_MODE_RADIAL;
+		currentModeDisp = "PARTICLE_MODE_RADIAL";
+		varSystem = true;
+		reset();
+	}
+	//Key press 2 to trigger rain particle Mode
+	if (key == '3') {
+		currentMode = PARTICLE_MODE_RAIN;
+		currentModeDisp = "PARTICLE_MODE_RAIN";
+		varSystem = false;
+		reset();
+	}
+	//Key press 2 to trigger attractor particle Mode
+	if (key == '4') {
+		currentMode = PARTICLE_MODE_ATTRACTOR;
+		currentModeDisp = "PARTICLE_MODE_ATTRACTOR";
+		varSystem = true;
+		reset();
+	}
+	//Key press 2 to trigger attractor particle Mode
+	if (key == '5') {
+		currentMode = PARTICLE_MODE_DETRACTOR;
+		currentModeDisp = "PARTICLE_MODE_DETRACTOR";
+		varSystem = true;
+		reset();
+	}
+	//Key press 2 to trigger attractor particle Mode
+	if (key == '6') {
+		currentMode = PARTICLE_MODE_POLY;
+		currentModeDisp = "PARTICLE_MODE_POLY";
+		varSystem = false;
+		reset();
+	}
+	if (key == '7') {
+		trails = true;
+		reset();
+	}
+}
+
+//--------------------------------------------------------------
+void ofApp::keyReleased(int key) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseMoved(int x, int y) {
+	attractors.at(0)->setup(ofGetMouseX(), ofGetMouseY());
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mousePressed(int x, int y, int button) {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseReleased(int x, int y, int button) {
+
+}
+