プログラミング de 落描き – ページ 844 – クリエイティブ・コーディングによる生成物とソース

2017年12月23日2017年12月22日

Insta20171222

[ Video ]

[ About ]
日の丸。
Japanise flag.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofFbo.h"
#include "Particle.h"

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 mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};
	
	ofImage photo;
	ofFbo fbo;
	vector<shared_ptr<Particle>> particles;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.h"

#include "Particle.h"

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 mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofImage photo;

ofFbo fbo;

vector<shared_ptr<Particle>> particles;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(30);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetLineWidth(2);
	this->photo.loadImage("photo.png");

	for (int i = 0; i < 512 + 256; i++) {
		this->particles.push_back(shared_ptr<Particle>(new Particle()));
	}

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
}

//--------------------------------------------------------------
void ofApp::update() {
	ofPixels pixels = this->photo.getPixelsRef();
	ofColor pixel_color;

	for (int i = 0; i < this->particles.size(); i++) {
		this->particles[i]->update();
	}

	this->fbo.begin();
	if (ofGetMousePressed()) {
		ofClear(0);
	}

	for (int i = 0; i < this->particles.size(); i++) {
		vector<ofVec2f> near_point;
		pixel_color = pixels.getColor(this->particles[i]->get_location().x, this->particles[i]->get_location().y);
		if (pixel_color == ofColor(0, 0, 0, 0)) {
			pixel_color = ofColor(255);
		}
		ofSetColor(pixel_color, 128);
		for (int j = i + 1; j < this->particles.size(); j++) {
			if (this->particles[i]->get_location().distanceSquared(this->particles[j]->get_location()) < 1000) {
				near_point.push_back(this->particles[j]->get_location());
				//ofDrawLine(this->particles[i]->get_location(), this->particles[j]->get_location());
			}
		}

		if (near_point.size() > 2) {
			ofBeginShape();
			for (int k = 0; k < near_point.size(); k++) {
				ofVertex(near_point[k].x, near_point[k].y);
			}
			ofEndShape(true);
		}
	}

	this->fbo.end();
}

//--------------------------------------------------------------
void ofApp::draw() {
	this->fbo.draw(0, 0);
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(30);

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetLineWidth(2);

this->photo.loadImage("photo.png");

for (int i = 0; i < 512 + 256; i++) {

this->particles.push_back(shared_ptr<Particle>(new Particle()));

}

this->fbo.allocate(ofGetWidth(), ofGetHeight());

}

//--------------------------------------------------------------

void ofApp::update() {

ofPixels pixels = this->photo.getPixelsRef();

ofColor pixel_color;

for (int i = 0; i < this->particles.size(); i++) {

this->particles[i]->update();

}

this->fbo.begin();

if (ofGetMousePressed()) {

ofClear(0);

}

for (int i = 0; i < this->particles.size(); i++) {

vector<ofVec2f> near_point;

pixel_color = pixels.getColor(this->particles[i]->get_location().x, this->particles[i]->get_location().y);

if (pixel_color == ofColor(0, 0, 0, 0)) {

pixel_color = ofColor(255);

}

ofSetColor(pixel_color, 128);

for (int j = i + 1; j < this->particles.size(); j++) {

if (this->particles[i]->get_location().distanceSquared(this->particles[j]->get_location()) < 1000) {

near_point.push_back(this->particles[j]->get_location());

//ofDrawLine(this->particles[i]->get_location(), this->particles[j]->get_location());

}

if (near_point.size() > 2) {

ofBeginShape();

for (int k = 0; k < near_point.size(); k++) {

ofVertex(near_point[k].x, near_point[k].y);

}

ofEndShape(true);

}

this->fbo.end();

}

//--------------------------------------------------------------

void ofApp::draw() {

this->fbo.draw(0, 0);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle
{
public:
	Particle();
	~Particle() {};

	void apply_force(ofVec2f force);
	void update();
	void draw();
	
	ofVec2f get_location();
private:
	ofVec2f location;
	ofVec2f velocity;
	ofVec2f acceleration;
};

#pragma once

#include "ofMain.h"

class Particle

{

public:

Particle();

~Particle() {};

void apply_force(ofVec2f force);

void update();

void draw();

ofVec2f get_location();

private:

ofVec2f location;

ofVec2f velocity;

ofVec2f acceleration;

};

#include "Particle.h"

Particle::Particle() {
	this->location = ofVec2f(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
	this->velocity = ofVec2f(ofRandom(-3, 3), ofRandom(-3, 3));
	this->acceleration = ofVec2f();
}

void Particle::apply_force(ofVec2f force) {
	this->acceleration += force;
}

void Particle::update() {
	this->acceleration += this->velocity;
	this->location += this->acceleration;
	this->acceleration *= 0;

	if (this->location.x < 0) {
		this->location.x = 0;
		this->velocity.x *= -1;
	}
	else if (this->location.x > ofGetWidth()) {
		this->location.x = ofGetWidth();
		this->velocity.x *= -1;
	}

	if (this->location.y < 0) {
		this->location.y = 0;
		this->velocity.y *= -1;
	}
	else if (this->location.y > ofGetHeight()) {
		this->location.y = ofGetHeight();
		this->velocity.y *= -1;
	}
}

void Particle::draw() {

}

ofVec2f Particle::get_location() {
	return this->location;
}

#include "Particle.h"

Particle::Particle() {

this->location = ofVec2f(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));

this->velocity = ofVec2f(ofRandom(-3, 3), ofRandom(-3, 3));

this->acceleration = ofVec2f();

}

void Particle::apply_force(ofVec2f force) {

this->acceleration += force;

}

void Particle::update() {

this->acceleration += this->velocity;

this->location += this->acceleration;

this->acceleration *= 0;

if (this->location.x < 0) {

this->location.x = 0;

this->velocity.x *= -1;

}

else if (this->location.x > ofGetWidth()) {

this->location.x = ofGetWidth();

this->velocity.x *= -1;

}

if (this->location.y < 0) {

this->location.y = 0;

this->velocity.y *= -1;

}

else if (this->location.y > ofGetHeight()) {

this->location.y = ofGetHeight();

this->velocity.y *= -1;

}

void Particle::draw() {

}

ofVec2f Particle::get_location() {

return this->location;

}

[ Link ]
https://github.com/junkiyoshi/Insta20171222

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2017年12月22日2017年12月21日

Insta20171221

[ Video ]

[ About ]
サーフェイスペンで介入出来るようにしました。楽しい。
With Surface Pen.

[ Source ]

#pragma once

#include "ofMain.h"
#include "Particle.h"
#include "Cleator.h"

class ofApp : public ofBaseApp {

public:
	~ofApp();

	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 mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	vector<Particle*> particles;
	vector<Cleator*> cleators;
};

#pragma once

#include "ofMain.h"

#include "Particle.h"

#include "Cleator.h"

class ofApp : public ofBaseApp {

public:

~ofApp();

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 mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

vector<Particle*> particles;

vector<Cleator*> cleators;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp() {
	for (int i = this->particles.size() - 1; i > -1; i--) {
		delete this->particles[i];
		this->particles.erase(this->particles.begin() + i);
	}

	for (int i = this->cleators.size() - 1; i > -1; i--) {
		delete this->cleators[i];
		this->cleators.erase(this->cleators.begin() + i);
	}
}


//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	for (int i = 0; i < 2; i++) {
		this->cleators.push_back(new Cleator());
	}
}

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

	
	for (int i = 0; i < this->cleators.size(); i++) {

		ofVec2f location = this->cleators[i]->get_location();
		ofVec2f velocity = this->cleators[i]->get_velocity();

		if (velocity.length() > 5) {
			this->particles.push_back(new Particle(location, velocity * 0.3));
		}
	}
	

	if (ofGetMousePressed()) {
		ofVec2f location = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2);
		ofVec2f prev_location = ofVec2f(ofGetPreviousMouseX() - ofGetWidth() / 2, ofGetPreviousMouseY() - ofGetHeight() / 2);
		ofVec2f velocity = prev_location - location;

		if (velocity.length() > 5) {
			this->particles.push_back(new Particle(location, velocity * 0.3));
		}
	}

	for (int i = this->particles.size() - 1; i > -1; i--) {
		this->particles[i]->update();

		if (this->particles[i]->isDead()) {
			delete this->particles[i];
			this->particles.erase(this->particles.begin() + i);
		}
	}

	for (int i = 0; i < this->cleators.size(); i++) {
		this->cleators[i]->update();
	}
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	float distance;
	for (int i = 0; i < this->particles.size(); i++) {
		this->particles[i]->draw();
		for (int j = i; j < this->particles.size(); j++) {
			distance = this->particles[i]->get_location().distance(this->particles[j]->get_location());
			if (distance < 100) {
				ofDrawLine(this->particles[i]->get_location(), this->particles[j]->get_location());
			}
		}
	}

	for (int i = 0; i < this->cleators.size(); i++) {
		this->cleators[i]->draw();
	}
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

ofApp::~ofApp() {

for (int i = this->particles.size() - 1; i > -1; i--) {

delete this->particles[i];

this->particles.erase(this->particles.begin() + i);

}

for (int i = this->cleators.size() - 1; i > -1; i--) {

delete this->cleators[i];

this->cleators.erase(this->cleators.begin() + i);

}

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

for (int i = 0; i < 2; i++) {

this->cleators.push_back(new Cleator());

}

//--------------------------------------------------------------

void ofApp::update() {

for (int i = 0; i < this->cleators.size(); i++) {

ofVec2f location = this->cleators[i]->get_location();

ofVec2f velocity = this->cleators[i]->get_velocity();

if (velocity.length() > 5) {

this->particles.push_back(new Particle(location, velocity * 0.3));

}

if (ofGetMousePressed()) {

ofVec2f location = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2);

ofVec2f prev_location = ofVec2f(ofGetPreviousMouseX() - ofGetWidth() / 2, ofGetPreviousMouseY() - ofGetHeight() / 2);

ofVec2f velocity = prev_location - location;

if (velocity.length() > 5) {

this->particles.push_back(new Particle(location, velocity * 0.3));

}

for (int i = this->particles.size() - 1; i > -1; i--) {

this->particles[i]->update();

if (this->particles[i]->isDead()) {

delete this->particles[i];

this->particles.erase(this->particles.begin() + i);

}

for (int i = 0; i < this->cleators.size(); i++) {

this->cleators[i]->update();

}

//--------------------------------------------------------------

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

float distance;

for (int i = 0; i < this->particles.size(); i++) {

this->particles[i]->draw();

for (int j = i; j < this->particles.size(); j++) {

distance = this->particles[i]->get_location().distance(this->particles[j]->get_location());

if (distance < 100) {

ofDrawLine(this->particles[i]->get_location(), this->particles[j]->get_location());

}

for (int i = 0; i < this->cleators.size(); i++) {

this->cleators[i]->draw();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle();
	Particle(ofVec2f location, ofVec2f velocity);
	~Particle();

	void update();
	void draw();

	ofVec2f get_location();
	bool isDead();
private:
	ofVec2f location;
	ofVec2f velocity;

	float	body_size;
	ofColor body_color;
	int		alpha;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

Particle(ofVec2f location, ofVec2f velocity);

~Particle();

void update();

void draw();

ofVec2f get_location();

bool isDead();

private:

ofVec2f location;

ofVec2f velocity;

float body_size;

ofColor body_color;

int alpha;

};

#include "Particle.h"

Particle::Particle() : Particle(ofVec2f(0, 0), ofVec2f(0, 0)) { }

Particle::Particle(ofVec2f location, ofVec2f velocity)
{
	this->location = location;
	this->velocity = velocity;
	this->alpha = 255;
	this->body_size = velocity.length() / 2;
	this->body_color.setHsb(ofRandom(255), 255, 255);
}

Particle::~Particle() { }

void Particle::update()
{
	this->location += this->velocity;
	this->alpha -= 1;
}

void Particle::draw()
{
	ofSetColor(this->body_color, this->alpha);
	ofDrawEllipse(this->location, this->body_size, this->body_size);
}

ofVec2f Particle::get_location() {
	return this->location;
}

bool Particle::isDead()
{
	return this->alpha < 0;
}

#include "Particle.h"

Particle::Particle() : Particle(ofVec2f(0, 0), ofVec2f(0, 0)) { }

Particle::Particle(ofVec2f location, ofVec2f velocity)

{

this->location = location;

this->velocity = velocity;

this->alpha = 255;

this->body_size = velocity.length() / 2;

this->body_color.setHsb(ofRandom(255), 255, 255);

}

Particle::~Particle() { }

void Particle::update()

{

this->location += this->velocity;

this->alpha -= 1;

}

void Particle::draw()

{

ofSetColor(this->body_color, this->alpha);

ofDrawEllipse(this->location, this->body_size, this->body_size);

}

ofVec2f Particle::get_location() {

return this->location;

}

bool Particle::isDead()

{

return this->alpha < 0;

}

#pragma once
#include "ofMain.h"

class Cleator
{
public:
	Cleator();
	~Cleator();

	void applyForce(ofVec2f force);
	void seek(ofVec2f target);

	void update();
	void draw();

	ofVec2f get_location();
	ofVec2f get_velocity();

private:
	ofVec2f location;
	ofVec2f velocity;
	ofVec2f acceleration;
	ofVec2f future;
	ofVec2f target;
	float max_speed;
	float max_force;
	float radius;
	float angle;
};

#pragma once

#include "ofMain.h"

class Cleator

{

public:

Cleator();

~Cleator();

void applyForce(ofVec2f force);

void seek(ofVec2f target);

void update();

void draw();

ofVec2f get_location();

ofVec2f get_velocity();

private:

ofVec2f location;

ofVec2f velocity;

ofVec2f acceleration;

ofVec2f future;

ofVec2f target;

float max_speed;

float max_force;

float radius;

float angle;

};

#include "Cleator.h"

Cleator::Cleator()
{
	this->location = ofVec2f(ofRandom(-1, 1), ofRandom(-1, 1));
	this->velocity = ofVec2f(0, 0);
	this->acceleration = ofVec2f(0, 0);

	this->max_speed = 10;
	this->max_force = 3;
	this->radius = 30;
	this->angle = ofRandom(360);
}

Cleator::~Cleator()
{

}

void Cleator::applyForce(ofVec2f force)
{
	this->acceleration += force;
}

void Cleator::seek(ofVec2f target)
{
	ofVec2f desired = this->location - target;
	float distance = desired.length();
	desired.normalize();
	if (distance < this->radius)
	{
		float m = ofMap(distance, 0, this->radius, 0, this->max_speed);
		desired *= m;
	}
	else
	{
		desired *= this->max_speed;
	}

	ofVec2f steer = this->velocity - desired;
	steer.limit(this->max_force);
	applyForce(steer);
}

void Cleator::update()
{
	this->future.set(this->velocity);
	this->future.normalize();
	this->future *= 60;
	this->future += this->location;

	this->angle = ofRandom(0, 360);
	float x = 60 * cos(this->angle * DEG_TO_RAD) + future.x;
	float y = 60 * sin(this->angle * DEG_TO_RAD) + future.y;
	this->target = ofVec2f(x, y);

	this->seek(this->target);

	this->velocity += this->acceleration;
	this->velocity.limit(max_speed);
	this->location += this->velocity;

	if (this->location.x < -ofGetWidth() / 2) {
		this->location.x = -ofGetWidth() / 2;
		this->velocity.x *= -1;
	}
	else if (this->location.x > ofGetWidth() / 2) {
		this->location.x = ofGetWidth() / 2;
		this->velocity.x *= -1;
	}

	if (this->location.y < -ofGetHeight() / 2) {
		this->location.y = -ofGetHeight() / 2;
		this->velocity.y *= -1;
	}
	else if (this->location.y > ofGetHeight() / 2) {
		this->location.y = ofGetHeight() / 2;
		this->velocity.y *= -1;
	}

	this->acceleration *= 0;
	this->velocity *= 0.98;

}

void Cleator::draw()
{

}

ofVec2f Cleator::get_location() {
	return this->location;
}

ofVec2f Cleator::get_velocity() {
	return this->velocity;
}

#include "Cleator.h"

Cleator::Cleator()

{

this->location = ofVec2f(ofRandom(-1, 1), ofRandom(-1, 1));

this->velocity = ofVec2f(0, 0);

this->acceleration = ofVec2f(0, 0);

this->max_speed = 10;

this->max_force = 3;

this->radius = 30;

this->angle = ofRandom(360);

}

Cleator::~Cleator()

{

}

void Cleator::applyForce(ofVec2f force)

{

this->acceleration += force;

}

void Cleator::seek(ofVec2f target)

{

ofVec2f desired = this->location - target;

float distance = desired.length();

desired.normalize();

if (distance < this->radius)

{

float m = ofMap(distance, 0, this->radius, 0, this->max_speed);

desired *= m;

}

else

{

desired *= this->max_speed;

}

ofVec2f steer = this->velocity - desired;

steer.limit(this->max_force);

applyForce(steer);

}

void Cleator::update()

{

this->future.set(this->velocity);

this->future.normalize();

this->future *= 60;

this->future += this->location;

this->angle = ofRandom(0, 360);

float x = 60 * cos(this->angle * DEG_TO_RAD) + future.x;

float y = 60 * sin(this->angle * DEG_TO_RAD) + future.y;

this->target = ofVec2f(x, y);

this->seek(this->target);

this->velocity += this->acceleration;

this->velocity.limit(max_speed);

this->location += this->velocity;

if (this->location.x < -ofGetWidth() / 2) {

this->location.x = -ofGetWidth() / 2;

this->velocity.x *= -1;

}

else if (this->location.x > ofGetWidth() / 2) {

this->location.x = ofGetWidth() / 2;

this->velocity.x *= -1;

}

if (this->location.y < -ofGetHeight() / 2) {

this->location.y = -ofGetHeight() / 2;

this->velocity.y *= -1;

}

else if (this->location.y > ofGetHeight() / 2) {

this->location.y = ofGetHeight() / 2;

this->velocity.y *= -1;

}

this->acceleration *= 0;

this->velocity *= 0.98;

}

void Cleator::draw()

{

}

ofVec2f Cleator::get_location() {

return this->location;

}

ofVec2f Cleator::get_velocity() {

return this->velocity;

}

[ Link ]
https://github.com/junkiyoshi/Insta20171221

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2017年12月21日2017年12月20日

Insta20171220

[ Video ]

[ About ]
Android TabletでopenFramworksを動かしました。
openFrameworks for Android.

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#include "ofMain.h"
#include "ofApp.h"

int main(){
	ofSetupOpenGL(1024,768, OF_WINDOW);			// <-------- setup the GL context

	// this kicks off the running of my app
	// can be OF_WINDOW or OF_FULLSCREEN
	// pass in width and height too:
	ofRunApp( new ofApp() );
	return 0;
}


#ifdef TARGET_ANDROID
#include <jni.h>

//========================================================================
extern "C"{
	void Java_cc_openframeworks_OFAndroid_init( JNIEnv*  env, jobject  thiz ){
		main();
	}
}
#endif

#include "ofMain.h"

#include "ofApp.h"

int main(){

ofSetupOpenGL(1024,768, OF_WINDOW); // <-------- setup the GL context

// this kicks off the running of my app

// can be OF_WINDOW or OF_FULLSCREEN

// pass in width and height too:

ofRunApp( new ofApp() );

return 0;

}

#ifdef TARGET_ANDROID

#include <jni.h>

//========================================================================

extern "C"{

void Java_cc_openframeworks_OFAndroid_init( JNIEnv* env, jobject thiz ){

main();

}

#endif

#pragma once

#include "ofMain.h"
#include "ofxAndroid.h"

#include "Particle.h"

class ofApp : public ofxAndroidApp{
	
	public:
		~ofApp();

		void setup();
		void update();
		void draw();
		
		void keyPressed(int key);
		void keyReleased(int key);
		void windowResized(int w, int h);

		void touchDown(int x, int y, int id);
		void touchMoved(int x, int y, int id);
		void touchUp(int x, int y, int id);
		void touchDoubleTap(int x, int y, int id);
		void touchCancelled(int x, int y, int id);
		void swipe(ofxAndroidSwipeDir swipeDir, int id);

		void pause();
		void stop();
		void resume();
		void reloadTextures();

		bool backPressed();
		void okPressed();
		void cancelPressed();

		vector<Particle*> particles;

		ofVec2f mouse_point;
		ofVec2f prev_mouse_point;
};

#pragma once

#include "ofMain.h"

#include "ofxAndroid.h"

#include "Particle.h"

class ofApp : public ofxAndroidApp{

public:

~ofApp();

void setup();

void update();

void draw();

void keyPressed(int key);

void keyReleased(int key);

void windowResized(int w, int h);

void touchDown(int x, int y, int id);

void touchMoved(int x, int y, int id);

void touchUp(int x, int y, int id);

void touchDoubleTap(int x, int y, int id);

void touchCancelled(int x, int y, int id);

void swipe(ofxAndroidSwipeDir swipeDir, int id);

void pause();

void stop();

void resume();

void reloadTextures();

bool backPressed();

void okPressed();

void cancelPressed();

vector<Particle*> particles;

ofVec2f mouse_point;

ofVec2f prev_mouse_point;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp(){
	for (int i = this->particles.size() - 1; i > -1; i--) {
		delete this->particles[i];
		this->particles.erase(this->particles.begin() + i);
	}
}


//--------------------------------------------------------------
void ofApp::setup(){
	ofSetFrameRate(60);
	ofBackground(255);
}

//--------------------------------------------------------------
void ofApp::update(){
    this->mouse_point = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2 );
	ofVec2f velocity = prev_mouse_point - mouse_point;

	if (velocity.length() > 0) {
		this->particles.push_back(new Particle(mouse_point, velocity));
	}

	for (int i = this->particles.size() - 1; i > -1; i--) {
		this->particles[i]->update();

		if (this->particles[i]->isDead()){
			delete this->particles[i];
			this->particles.erase(this->particles.begin() + i);
		}
	}

	this->prev_mouse_point = this->mouse_point;
}

//--------------------------------------------------------------
void ofApp::draw(){
    ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	for (Particle* p : this->particles) {
		p->draw();
	}
}

//--------------------------------------------------------------
void ofApp::keyPressed  (int key){ 
	
}

//--------------------------------------------------------------
void ofApp::keyReleased(int key){ 
	
}

//--------------------------------------------------------------
void ofApp::windowResized(int w, int h){

}

//--------------------------------------------------------------
void ofApp::touchDown(int x, int y, int id){

}

//--------------------------------------------------------------
void ofApp::touchMoved(int x, int y, int id){

}

//--------------------------------------------------------------
void ofApp::touchUp(int x, int y, int id){

}

//--------------------------------------------------------------
void ofApp::touchDoubleTap(int x, int y, int id){

}

//--------------------------------------------------------------
void ofApp::touchCancelled(int x, int y, int id){

}

//--------------------------------------------------------------
void ofApp::swipe(ofxAndroidSwipeDir swipeDir, int id){

}

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

}

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

}

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

}

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

}

//--------------------------------------------------------------
bool ofApp::backPressed(){
	return false;
}

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

}

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

}

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#include "ofApp.h"

//--------------------------------------------------------------

ofApp::~ofApp(){

for (int i = this->particles.size() - 1; i > -1; i--) {

delete this->particles[i];

this->particles.erase(this->particles.begin() + i);

}

//--------------------------------------------------------------

void ofApp::setup(){

ofSetFrameRate(60);

ofBackground(255);

}

//--------------------------------------------------------------

void ofApp::update(){

this->mouse_point = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2 );

ofVec2f velocity = prev_mouse_point - mouse_point;

if (velocity.length() > 0) {

this->particles.push_back(new Particle(mouse_point, velocity));

}

for (int i = this->particles.size() - 1; i > -1; i--) {

this->particles[i]->update();

if (this->particles[i]->isDead()){

delete this->particles[i];

this->particles.erase(this->particles.begin() + i);

}

this->prev_mouse_point = this->mouse_point;

}

//--------------------------------------------------------------

void ofApp::draw(){

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

for (Particle* p : this->particles) {

p->draw();

}

//--------------------------------------------------------------

void ofApp::keyPressed (int key){

}

//--------------------------------------------------------------

void ofApp::keyReleased(int key){

}

//--------------------------------------------------------------

void ofApp::windowResized(int w, int h){

}

//--------------------------------------------------------------

void ofApp::touchDown(int x, int y, int id){

}

//--------------------------------------------------------------

void ofApp::touchMoved(int x, int y, int id){

}

//--------------------------------------------------------------

void ofApp::touchUp(int x, int y, int id){

}

//--------------------------------------------------------------

void ofApp::touchDoubleTap(int x, int y, int id){

}

//--------------------------------------------------------------

void ofApp::touchCancelled(int x, int y, int id){

}

//--------------------------------------------------------------

void ofApp::swipe(ofxAndroidSwipeDir swipeDir, int id){

}

//--------------------------------------------------------------

void ofApp::pause(){

}

//--------------------------------------------------------------

void ofApp::stop(){

}

//--------------------------------------------------------------

void ofApp::resume(){

}

//--------------------------------------------------------------

void ofApp::reloadTextures(){

}

//--------------------------------------------------------------

bool ofApp::backPressed(){

return false;

}

//--------------------------------------------------------------

void ofApp::okPressed(){

}

//--------------------------------------------------------------

void ofApp::cancelPressed(){

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle();
	Particle(ofVec2f location, ofVec2f velocity);
	~Particle();

	void update();
	void draw();

	bool isDead();
private:
	ofVec2f location;
	ofVec2f velocity;

	float	body_size;
	ofColor body_color;
	int		alpha;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

Particle(ofVec2f location, ofVec2f velocity);

~Particle();

void update();

void draw();

bool isDead();

private:

ofVec2f location;

ofVec2f velocity;

float body_size;

ofColor body_color;

int alpha;

};

#include "Particle.h"

Particle::Particle() : Particle(ofVec2f(0, 0), ofVec2f(0, 0)){ }

Particle::Particle(ofVec2f location, ofVec2f velocity)
{
	this->location = location;
	this->velocity = velocity;
	this->alpha = 255;
	this->body_size = velocity.length() * 5;
	this->body_color.setHsb(ofRandom(255), 255, 255);
}

Particle::~Particle(){ }

void Particle::update()
{
	this->location += this->velocity;
	this->alpha -= 5;
}

void Particle::draw()
{
	ofSetColor(this->body_color, this->alpha);
	ofDrawEllipse(this->location, this->body_size, this->body_size);
}

bool Particle::isDead()
{
	return this->alpha < 0;
}

#include "Particle.h"

Particle::Particle() : Particle(ofVec2f(0, 0), ofVec2f(0, 0)){ }

Particle::Particle(ofVec2f location, ofVec2f velocity)

{

this->location = location;

this->velocity = velocity;

this->alpha = 255;

this->body_size = velocity.length() * 5;

this->body_color.setHsb(ofRandom(255), 255, 255);

}

Particle::~Particle(){ }

void Particle::update()

{

this->location += this->velocity;

this->alpha -= 5;

}

void Particle::draw()

{

ofSetColor(this->body_color, this->alpha);

ofDrawEllipse(this->location, this->body_size, this->body_size);

}

bool Particle::isDead()

{

return this->alpha < 0;

}

[ Link ]
https://github.com/junkiyoshi/Insta20171220

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