junkiyoshi – ページ 891 – プログラミング de 落描き

2018年1月26日2018年1月25日

OpenCVで雪道の足跡くっきり openFrameworks

[ Video ]

[ About ]
名古屋にも雪が降りまして、仕事の帰り道で、足跡ってOpenCVのエッジ処理で切り抜けるんじゃないかと？ひらめきました。

帰宅後は、雪道でいかに安全にノートPCを担ぎながら撮影をする方法を考えていましたが、リアルタイムでする必要もないことに何とか気づく事が出来たので、朝の通勤時にスマートフォンで撮影しました。贅沢を言うと、犬の肉球跡が欲しかった。。。

緑色の線が抽出した輪郭です。元の画像と重ねてありますので、輪郭を拾えてない部分とかもわかるかと思います。

やりたい事はOpenCVのみで終わりますが、openFrameworksと言い張っていこうと思います。

[ Source ]

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

#include "opencv2/opencv.hpp"

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

	ofFbo fbo;

	cv::VideoCapture cap;
	cv::Size cap_size;

	cv::Mat frame;
	ofImage image;

	// 動画データ出力用
	cv::VideoWriter writer;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.h"

#include "opencv2/opencv.hpp"

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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo;

cv::VideoCapture cap;

cv::Size cap_size;

cv::Mat frame;

ofImage image;

// 動画データ出力用

cv::VideoWriter writer;

};

#include "ofApp.h"

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

	ofBackground(0);
	ofSetWindowTitle("Insta");

	this->cap.open("snow.mp4");

	this->cap_size = cv::Size(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));
	int frame_rate = this->cap.get(CV_CAP_PROP_FPS);
	ofSetFrameRate(frame_rate);

	// this->writer = cv::VideoWriter("out.mp4", CV_FOURCC('H', '2', '6', '4'), frame_rate, this->cap_size);

	this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->frame = cv::Mat(this->image.getHeight(), this->image.getWidth(), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

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

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

	this->cap >> this->frame;
	if (this->frame.empty()) {

		return;
	}
	cv::Mat gray, canny, color_canny;
	cv::cvtColor(this->frame, gray, CV_RGB2GRAY);
	cv::Canny(gray, canny, 50, 150);
	
	for (int y = 0; y < canny.rows; y += 1) {

		unsigned char* value = &canny.at<unsigned char>(y, 0);
		for (int x = 0; x < canny.cols; x += 1) {
			
			if (*value > 0) {
				this->frame.at<cv::Vec3b>(y, x) = cv::Vec3b(0, 255, 0);
			}
			value++;
		}
	}
	// writer << this->frame;
	cv::cvtColor(this->frame, this->frame, CV_BGR2RGB);

	this->fbo.begin();
	ofClear(0);

	ofSetColor(255);
	this->image.update();
	this->image.draw(0, 0);

	this->fbo.end();
}

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

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

//========================================================================
int main() {

	ofSetupOpenGL(1920, 1080, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofBackground(0);

ofSetWindowTitle("Insta");

this->cap.open("snow.mp4");

this->cap_size = cv::Size(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));

int frame_rate = this->cap.get(CV_CAP_PROP_FPS);

ofSetFrameRate(frame_rate);

// this->writer = cv::VideoWriter("out.mp4", CV_FOURCC('H', '2', '6', '4'), frame_rate, this->cap_size);

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->frame = cv::Mat(this->image.getHeight(), this->image.getWidth(), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

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

}

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

void ofApp::update() {

this->cap >> this->frame;

if (this->frame.empty()) {

return;

}

cv::Mat gray, canny, color_canny;

cv::cvtColor(this->frame, gray, CV_RGB2GRAY);

cv::Canny(gray, canny, 50, 150);

for (int y = 0; y < canny.rows; y += 1) {

unsigned char* value = &canny.at<unsigned char>(y, 0);

for (int x = 0; x < canny.cols; x += 1) {

if (*value > 0) {

this->frame.at<cv::Vec3b>(y, x) = cv::Vec3b(0, 255, 0);

}

value++;

}

// writer << this->frame;

cv::cvtColor(this->frame, this->frame, CV_BGR2RGB);

this->fbo.begin();

ofClear(0);

ofSetColor(255);

this->image.update();

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

this->fbo.end();

}

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

void ofApp::draw() {

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

}

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

int main() {

ofSetupOpenGL(1920, 1080, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180125

2018年1月25日2018年1月25日

Particleで輪郭を描く openFrameworks OpenCV

[ Video ]

[ About ]
OpenCVのエッジ処理で輪郭を抽出して、Particleと線を結ぶようにしました。Mac Book Proの友情出演もありです。

そしてエンコ泣かせ。YouTubeだとつぶれていますが、思ったよりパーリーピーポー感でて良い感じです。

[ Source ]

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

#include "opencv2/opencv.hpp"

#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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo;

	cv::VideoCapture cap;
	cv::Size cap_size;

	cv::Mat frame;
	ofImage image;

	vector<unique_ptr<Particle>> particles;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.h"

#include "opencv2/opencv.hpp"

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo;

cv::VideoCapture cap;

cv::Size cap_size;

cv::Mat frame;

ofImage image;

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->cap.open(1);

	this->cap_size = cv::Size(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));
	ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

	this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_GRAYSCALE);
	this->frame = cv::Mat(this->image.getHeight(), this->image.getWidth(), CV_MAKETYPE(CV_8UC1, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

	for (int i = 0; i < 2048; i++) {

		unique_ptr<Particle> particle(new Particle());
		this->particles.push_back(std::move(particle));
	}

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

//--------------------------------------------------------------
void ofApp::update() {
	
	cv::Mat src;
	this->cap >> src;
	if (src.empty()) { 

		return;
	}
	cv::Canny(src, this->frame, 50, 200);
	cv::flip(this->frame, this->frame, 1);

	vector<ofVec2f> edges;
	for (int y = 0; y < this->frame.rows; y += 3) {

		for (int x = 0; x < this->frame.cols; x += 3) {

			if (this->frame.at<unsigned char>(y, x) > 0) {

				edges.push_back(ofVec2f(x, y));
			}
		}
	}

	this->fbo.begin();
	ofClear(0);

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

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

		for (ofVec2f edge : edges) {

			float distance = this->particles[i]->get_location().distance(edge);
			if (distance < 30) {

				ofSetColor(this->particles[i]->get_body_color(), ofMap(distance, 0, 30, 255, 0));
				ofDrawLine(this->particles[i]->get_location(), edge);
			}
		}
	}
	
	//this->image.update();
	//this->image.draw(0, 0);

	this->fbo.end();
}

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

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

//========================================================================
int main() {

	ofSetupOpenGL(640, 480, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->cap.open(1);

this->cap_size = cv::Size(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));

ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_GRAYSCALE);

this->frame = cv::Mat(this->image.getHeight(), this->image.getWidth(), CV_MAKETYPE(CV_8UC1, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

for (int i = 0; i < 2048; i++) {

unique_ptr<Particle> particle(new Particle());

this->particles.push_back(std::move(particle));

}

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

}

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

void ofApp::update() {

cv::Mat src;

this->cap >> src;

if (src.empty()) {

return;

}

cv::Canny(src, this->frame, 50, 200);

cv::flip(this->frame, this->frame, 1);

vector<ofVec2f> edges;

for (int y = 0; y < this->frame.rows; y += 3) {

for (int x = 0; x < this->frame.cols; x += 3) {

if (this->frame.at<unsigned char>(y, x) > 0) {

edges.push_back(ofVec2f(x, y));

}

this->fbo.begin();

ofClear(0);

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

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

for (ofVec2f edge : edges) {

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

if (distance < 30) {

ofSetColor(this->particles[i]->get_body_color(), ofMap(distance, 0, 30, 255, 0));

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

}

//this->image.update();

//this->image.draw(0, 0);

this->fbo.end();

}

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

void ofApp::draw() {

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

}

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

int main() {

ofSetupOpenGL(640, 480, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

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

	void apply_force(ofVec2f force);
	void update();
	void draw();

	void set_color(ofColor body_color);
	ofVec2f get_location();
	ofColor get_body_color();

private:
	ofVec2f location;
	ofVec2f velocity;
	ofVec2f acceleration;
	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Particle

{

public:

Particle();

~Particle() {};

void apply_force(ofVec2f force);

void update();

void draw();

void set_color(ofColor body_color);

ofVec2f get_location();

ofColor get_body_color();

private:

ofVec2f location;

ofVec2f velocity;

ofVec2f acceleration;

ofColor body_color;

};

#include "Particle.h"

Particle::Particle() {

	this->location = ofVec2f(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
	this->velocity = ofVec2f(ofRandom(-3, 3), ofRandom(-3, 3));
	this->velocity = this->velocity.normalized() * ofRandom(3, 5);
	this->acceleration = ofVec2f();
	this->body_color.setHsb(ofRandom(255), 255, 255);
}

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() {

	ofSetColor(this->body_color);
	ofDrawCircle(this->location, 3);
}

void Particle::set_color(ofColor body_color) {

	this->body_color = body_color;
}

ofVec2f Particle::get_location() {

	return this->location;
}

ofColor Particle::get_body_color() {

	return this->body_color;
}

#include "Particle.h"

Particle::Particle() {

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

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

this->velocity = this->velocity.normalized() * ofRandom(3, 5);

this->acceleration = ofVec2f();

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

}

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() {

ofSetColor(this->body_color);

ofDrawCircle(this->location, 3);

}

void Particle::set_color(ofColor body_color) {

this->body_color = body_color;

}

ofVec2f Particle::get_location() {

return this->location;

}

ofColor Particle::get_body_color() {

return this->body_color;

}

[ Link ]
https://github.com/junkiyoshi/Insta20180124

2018年1月24日2018年1月23日

Particleで文字を書く openFrameworks

[ Video ]

[ About ]
Particleが文字の輪郭が近づくとLineが引かれます。普段はParticle同士で線を引いていますが、別のオブジェクトの関係に変えてみました。

それぞれのSNSにアップロードしたときにエンコードが加わって絵がつぶれてしまうかも(つぶれてますね)知れませんが綺麗です。特別なaddonが無くてもopenFrameworksのみで動きますので、動かす環境がある方は是非、実機でご確認下さい。

OpenCVでエッジを抽出して、エッジ × Particleも面白いのが出来るかも。

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	ofFbo fbo;

	ofTrueTypeFont font;
	string words;
	ofPoint words_size;
	vector<ofTTFCharacter> paths;

	vector<unique_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofFbo fbo;

ofTrueTypeFont font;

string words;

ofPoint words_size;

vector<ofTTFCharacter> paths;

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetLineWidth(1.3);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 250, true, false, true);
	this->words = "YES";
	this->words_size = ofPoint(this->font.stringWidth(this->words), this->font.stringHeight(this->words));
	this->paths = this->font.getStringAsPoints(this->words);

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

		unique_ptr<Particle> particle(new Particle());
		this->particles.push_back(std::move(particle));
	}

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

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

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

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

	for (int p_index = 0; p_index < this->paths.size(); p_index++) {

		vector<ofPolyline> outline = this->paths[p_index].getOutline();
		for (int o_index = 0; o_index < outline.size(); o_index++) {

			outline[o_index] = outline[o_index].getResampledBySpacing(15);
			vector<ofPoint> vertices = outline[o_index].getVertices();
			for (int v_index = 0; v_index < vertices.size(); v_index++) {

				ofPoint point = vertices[v_index] + ofPoint(ofGetWidth() / 2, ofGetHeight() / 2) - ofPoint(this->words_size.x / 2, -this->words_size.y / 2);
				for (int i = 0; i < this->particles.size(); i++) {

					float distance = this->particles[i]->get_location().distance(point);
					if (distance < 80) {

						ofSetColor(this->particles[i]->get_body_color(), ofMap(distance, 0, 80, 255, 0));
						ofDrawLine(point, this->particles[i]->get_location());
					}
				}
			}
		}
	}

	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(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetLineWidth(1.3);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 250, true, false, true);

this->words = "YES";

this->words_size = ofPoint(this->font.stringWidth(this->words), this->font.stringHeight(this->words));

this->paths = this->font.getStringAsPoints(this->words);

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

unique_ptr<Particle> particle(new Particle());

this->particles.push_back(std::move(particle));

}

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

}

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

void ofApp::update() {

this->fbo.begin();

ofClear(0);

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

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

}

for (int p_index = 0; p_index < this->paths.size(); p_index++) {

vector<ofPolyline> outline = this->paths[p_index].getOutline();

for (int o_index = 0; o_index < outline.size(); o_index++) {

outline[o_index] = outline[o_index].getResampledBySpacing(15);

vector<ofPoint> vertices = outline[o_index].getVertices();

for (int v_index = 0; v_index < vertices.size(); v_index++) {

ofPoint point = vertices[v_index] + ofPoint(ofGetWidth() / 2, ofGetHeight() / 2) - ofPoint(this->words_size.x / 2, -this->words_size.y / 2);

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

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

if (distance < 80) {

ofSetColor(this->particles[i]->get_body_color(), ofMap(distance, 0, 80, 255, 0));

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

}

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();

	void set_color(ofColor body_color);
	ofVec2f get_location();
	ofColor get_body_color();

private:
	ofVec2f location;
	ofVec2f velocity;
	ofVec2f acceleration;
	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Particle

{

public:

Particle();

~Particle() {};

void apply_force(ofVec2f force);

void update();

void draw();

void set_color(ofColor body_color);

ofVec2f get_location();

ofColor get_body_color();

private:

ofVec2f location;

ofVec2f velocity;

ofVec2f acceleration;

ofColor body_color;

};

#include "Particle.h"

Particle::Particle() {

	this->location = ofVec2f(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
	this->velocity = ofVec2f(ofRandom(-3, 3), ofRandom(-3, 3));
	this->velocity = this->velocity.normalized() * ofRandom(1, 3);
	this->acceleration = ofVec2f();
	this->body_color.setHsb(ofRandom(255), 255, 255);
}

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() {

	ofSetColor(this->body_color);
	ofDrawCircle(this->location, 3);
}

void Particle::set_color(ofColor body_color) {
	
	this->body_color = body_color;
}

ofVec2f Particle::get_location() {

	return this->location;
}

ofColor Particle::get_body_color() {

	return this->body_color;
}

#include "Particle.h"

Particle::Particle() {

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

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

this->velocity = this->velocity.normalized() * ofRandom(1, 3);

this->acceleration = ofVec2f();

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

}

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() {

ofSetColor(this->body_color);

ofDrawCircle(this->location, 3);

}

void Particle::set_color(ofColor body_color) {

this->body_color = body_color;

}

ofVec2f Particle::get_location() {

return this->location;

}

ofColor Particle::get_body_color() {

return this->body_color;

}

[ Link ]
https://github.com/junkiyoshi/Insta20180123

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