Forum_Deutsches_Museum_Interaktiv/ofApp.cpp

#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) {

}