Particle – ページ 20 – プログラミング de 落描き

2018年2月23日2018年2月22日

Particle × Torus openFrameworks

[ Video ]

[ About ]
トーラスの座標上を走るParticleを作成、お互いの距離を見て線を描写しています。

[ Source ]

#include "ofMain.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) {};

	ofEasyCam cam;
	std::vector<std::unique_ptr<Particle>> particles;
};

#include "ofMain.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) {};

ofEasyCam cam;

std::vector<std::unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(255);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
	ofSetLineWidth(1.2);

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

		std::unique_ptr<Particle> particle(new Particle(i * 0.5));
		this->particles.push_back(std::move(particle));
	}
}

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

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

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

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

	this->cam.begin();

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

		this->particles[i]->draw(this->particles);
	}
		
	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(255);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofSetLineWidth(1.2);

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

std::unique_ptr<Particle> particle(new Particle(i * 0.5));

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

}

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

void ofApp::update() {

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

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

}

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

void ofApp::draw() {

this->cam.begin();

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

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:

	Particle(float value);
	~Particle();

	void update();
	void draw(const vector<unique_ptr<Particle>> &particles);

	ofPoint make_point(float radius, float small_radius, float deg, float small_deg);
	ofPoint get_location();
private:

	float radius;
	float small_radius;
	float deg;
	float small_deg;
	float deg_span;
	float small_deg_span;

	ofColor body_color;
	ofPoint location;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(float value);

~Particle();

void update();

void draw(const vector<unique_ptr<Particle>> &particles);

ofPoint make_point(float radius, float small_radius, float deg, float small_deg);

ofPoint get_location();

private:

float radius;

float small_radius;

float deg;

float small_deg;

float deg_span;

float small_deg_span;

ofColor body_color;

ofPoint location;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(float value) {

	this->radius = 230;
	this->small_radius = 50;
	this->deg = ofRandom(0, 360);
	this->small_deg = ofRandom(0, 360);
	this->deg_span = ofRandom(0.25, 1.5);
	this->small_deg_span = ofRandom(5, 10);
	this->body_color = ofColor(0);
	this->location = this->make_point(this->radius, this->small_radius, this->deg, this->small_deg);
}

//--------------------------------------------------------------
Particle::~Particle() { }

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

	this->deg += this->deg_span;
	this->small_deg += this->small_deg_span;
	this->location = this->make_point(this->radius, this->small_radius, this->deg, this->small_deg);
}

//--------------------------------------------------------------
void Particle::draw(const vector<unique_ptr<Particle>> &particles) {

	ofSetColor(this->body_color);
	ofDrawSphere(this->location, 1.5);

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

		float distance = this->location.distance(particles[i]->get_location());
		if (distance < 50) {

			ofSetColor(this->body_color, ofMap(distance, 0, 50, 255, 0));
			ofDrawLine(this->location, particles[i]->get_location());
		}
	}
}

//--------------------------------------------------------------
ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

	float x_1 = radius * cos(deg * DEG_TO_RAD);
	float y_1 = radius * sin(deg * DEG_TO_RAD);

	float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);
	float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

	float x = x_1 + x_2;
	float y = y_1 + y_2;
	float z = small_radius * sin(small_deg * DEG_TO_RAD);

	return ofPoint(x, y, z);
}

//--------------------------------------------------------------
ofPoint Particle::get_location(){

	return this->location;
}

#include "Particle.h"

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

Particle::Particle(float value) {

this->radius = 230;

this->small_radius = 50;

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

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

this->deg_span = ofRandom(0.25, 1.5);

this->small_deg_span = ofRandom(5, 10);

this->body_color = ofColor(0);

this->location = this->make_point(this->radius, this->small_radius, this->deg, this->small_deg);

}

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

Particle::~Particle() { }

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

void Particle::update() {

this->deg += this->deg_span;

this->small_deg += this->small_deg_span;

this->location = this->make_point(this->radius, this->small_radius, this->deg, this->small_deg);

}

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

void Particle::draw(const vector<unique_ptr<Particle>> &particles) {

ofSetColor(this->body_color);

ofDrawSphere(this->location, 1.5);

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

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

if (distance < 50) {

ofSetColor(this->body_color, ofMap(distance, 0, 50, 255, 0));

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

}

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

ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

float x_1 = radius * cos(deg * DEG_TO_RAD);

float y_1 = radius * sin(deg * DEG_TO_RAD);

float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);

float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

float x = x_1 + x_2;

float y = y_1 + y_2;

float z = small_radius * sin(small_deg * DEG_TO_RAD);

return ofPoint(x, y, z);

}

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

ofPoint Particle::get_location(){

return this->location;

}

[ Link ]
https://github.com/junkiyoshi/Insta20180222

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2018年2月22日2018年2月22日

ランニング・トーラス　openFrameworks

[ Video ]

[ About ]
ドーナツ状の座標を流れていくParticleを実装しました。数学の分野ではトーラスと呼ばれているらしく、方程式がwikiにも書いてあったので、拝借して実装してみました。

トーラス
https://ja.wikipedia.org/wiki/%E3%83%88%E3%83%BC%E3%83%A9%E3%82%B9

[ Source ]

#include "ofMain.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) {};

	ofEasyCam cam;
	std::vector<std::unique_ptr<Particle>> particles;
};

#include "ofMain.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) {};

ofEasyCam cam;

std::vector<std::unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

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

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofEnableDepthTest();
	ofSetLineWidth(1.2);

	for (int i = 0; i < 255; i++) {

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

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

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

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

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

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

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

	
	this->cam.end();
}

//--------------------------------------------------------------
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);

ofEnableDepthTest();

ofSetLineWidth(1.2);

for (int i = 0; i < 255; i++) {

std::unique_ptr<Particle> particle(new Particle(i));

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

}

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

void ofApp::update() {

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

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

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:

	Particle(float value);
	~Particle();

	void update();
	void draw();

	ofPoint make_point(float radius, float small_radius, float deg, float small_deg);
private:

	float radius;
	float small_radius;
	float deg;
	float small_deg;
	float deg_span;
	float small_deg_span;

	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(float value);

~Particle();

void update();

void draw();

ofPoint make_point(float radius, float small_radius, float deg, float small_deg);

private:

float radius;

float small_radius;

float deg;

float small_deg;

float deg_span;

float small_deg_span;

ofColor body_color;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(float value) {

	this->radius = 230;
	this->small_radius = 70;
	this->deg = value / 255.f * 360.f;
	this->small_deg = ofRandom(0, 360);
	this->deg_span = 1;
	this->small_deg_span = 10;
	this->body_color.setHsb(value, 255, 255);
}

//--------------------------------------------------------------
Particle::~Particle() { }

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

	this->deg += this->deg_span;
	this->small_deg += this->small_deg_span;
}

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

	ofSetColor(this->body_color, 255);
	ofVec3f point = make_point(this->radius, this->small_radius, this->deg, this->small_deg);
	ofDrawSphere(point, 1.5);

	for (int i = 0; i < 12; i++) {

		ofSetColor(this->body_color, 255 - i * 25);
		ofVec3f point_1 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * i, this->small_deg - this->small_deg_span * i);
		ofVec3f point_2 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * (i + 1), this->small_deg - this->small_deg_span * (i + 1));
		ofDrawLine(point_1, point_2);
	}
}

//--------------------------------------------------------------
ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

	float x_1 = radius * cos(deg * DEG_TO_RAD);
	float y_1 = radius * sin(deg * DEG_TO_RAD);

	float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);
	float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

	float x = x_1 + x_2;
	float y = y_1 + y_2;
	float z = small_radius * sin(small_deg * DEG_TO_RAD);

	return ofVec3f(x, y, z);
}

#include "Particle.h"

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

Particle::Particle(float value) {

this->radius = 230;

this->small_radius = 70;

this->deg = value / 255.f * 360.f;

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

this->deg_span = 1;

this->small_deg_span = 10;

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

}

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

Particle::~Particle() { }

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

void Particle::update() {

this->deg += this->deg_span;

this->small_deg += this->small_deg_span;

}

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

void Particle::draw() {

ofSetColor(this->body_color, 255);

ofVec3f point = make_point(this->radius, this->small_radius, this->deg, this->small_deg);

ofDrawSphere(point, 1.5);

for (int i = 0; i < 12; i++) {

ofSetColor(this->body_color, 255 - i * 25);

ofVec3f point_1 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * i, this->small_deg - this->small_deg_span * i);

ofVec3f point_2 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * (i + 1), this->small_deg - this->small_deg_span * (i + 1));

ofDrawLine(point_1, point_2);

}

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

ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

float x_1 = radius * cos(deg * DEG_TO_RAD);

float y_1 = radius * sin(deg * DEG_TO_RAD);

float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);

float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

float x = x_1 + x_2;

float y = y_1 + y_2;

float z = small_radius * sin(small_deg * DEG_TO_RAD);

return ofVec3f(x, y, z);

}

[ Link ]
https://github.com/junkiyoshi/Insta20180221

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2018年2月4日2018年2月3日

動画のフレーム差分でParticleを生成 openFrameworks OpenCV ofxBox2d

[ Video ]

[ About ]
昨日のWebカメラを動画データに置き換えました。重かったので、書き出した画像をつなげて動画にしてあります。

[ Source ]

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

#include "ofxBox2d.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 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) {};

	ofFbo fbo;
	ofPixels pixels;
	ofImage save_image;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<float> circles_life;
	vector<ofColor> circles_color;
	
	cv::VideoCapture cap;
	ofVec2f cap_size;
	cv::Mat pre_frame;
	cv::Mat frame;
	ofImage image;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.h"

#include "ofxBox2d.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 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) {};

ofFbo fbo;

ofPixels pixels;

ofImage save_image;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<float> circles_life;

vector<ofColor> circles_color;

cv::VideoCapture cap;

ofVec2f cap_size;

cv::Mat pre_frame;

cv::Mat frame;

ofImage image;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(25);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(25);
	//this->box2d.registerGrabbing();

	this->cap.open("city3.mp4");
	this->cap_size = ofVec2f(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));
	this->cap_size *= 0.33;

	this->image.allocate(this->cap_size.x, this->cap_size.y, 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() {

	cv::Mat src;
	this->cap >> src;
	
	if (src.empty()) {
		return;
	}

	cv::flip(src, src, 1);
	cv::cvtColor(src, src, cv::COLOR_BGR2RGB);
	cv::resize(src, this->frame, cv::Size(this->cap_size.x, this->cap_size.y));

	float span = 10;
	if(ofGetFrameNum() > 10) {

		cv::Mat gap = this->pre_frame - this->frame;
		vector<ofVec2f> gap_points;

		for (int y = 0; y < gap.rows; y += span) {

			cv::Vec3b* value = gap.ptr<cv::Vec3b>(y, 0);
			for (int x = 0; x < gap.cols; x += span) {

				cv::Vec3b v = value[x];
				if ((v[0] + v[1] + v[2]) > 32) {
					 
					shared_ptr<ofxBox2dCircle> circle = shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle);
					circle.get()->setPhysics(3.0, 0.5, 0.1);
					circle.get()->setup(this->box2d.getWorld(), x + ofGetWidth() / 2 - this->image.getWidth() / 2 + ofRandom(-span / 2, span / 2), y + 30 + ofRandom(-span / 2, span / 2), span / 4);
					this->circles.push_back(circle);

					this->circles_life.push_back(255);

					ofColor c;
					c.setHsb(ofRandom(255), 220, 220);
					this->circles_color.push_back(c);

				}
			}
		}
	}
	this->frame.copyTo(this->pre_frame);
	this->image.update();

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

	ofSetColor(255);
	this->image.draw(ofGetWidth() / 2 - this->image.getWidth() / 2, 30);

	for (int i = this->circles.size() - 1; i >= 0; i--) {
		
		this->circles_life[i] -= 8;
		if (this->circles_life[i] < 0) {

			this->circles[i].get()->destroy();
			this->circles.erase(this->circles.begin() + i);
			this->circles_life.erase(this->circles_life.begin() + i);
			this->circles_color.erase(this->circles_color.begin() + i);
		}
		else {

			ofSetColor(this->circles_color[i], this->circles_life[i] + 128);
			ofDrawCircle(this->circles[i].get()->getPosition(), this->circles[i].get()->getRadius());
		}
	}

	this->fbo.end();

	//this->fbo.readToPixels(pixels);
	//this->save_image.setFromPixels(pixels);
	//this->save_image.save(std::to_string(ofGetFrameNum()) + ".png", OF_IMAGE_QUALITY_BEST);

	this->box2d.update();
}

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

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

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofBackground(0);

ofSetWindowTitle("Insta");

this->box2d.init();

this->box2d.setGravity(0, 50);

this->box2d.createBounds();

this->box2d.setFPS(25);

//this->box2d.registerGrabbing();

this->cap.open("city3.mp4");

this->cap_size = ofVec2f(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));

this->cap_size *= 0.33;

this->image.allocate(this->cap_size.x, this->cap_size.y, 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() {

cv::Mat src;

this->cap >> src;

if (src.empty()) {

return;

}

cv::flip(src, src, 1);

cv::cvtColor(src, src, cv::COLOR_BGR2RGB);

cv::resize(src, this->frame, cv::Size(this->cap_size.x, this->cap_size.y));

float span = 10;

if(ofGetFrameNum() > 10) {

cv::Mat gap = this->pre_frame - this->frame;

vector<ofVec2f> gap_points;

for (int y = 0; y < gap.rows; y += span) {

cv::Vec3b* value = gap.ptr<cv::Vec3b>(y, 0);

for (int x = 0; x < gap.cols; x += span) {

cv::Vec3b v = value[x];

if ((v[0] + v[1] + v[2]) > 32) {

shared_ptr<ofxBox2dCircle> circle = shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle);

circle.get()->setPhysics(3.0, 0.5, 0.1);

circle.get()->setup(this->box2d.getWorld(), x + ofGetWidth() / 2 - this->image.getWidth() / 2 + ofRandom(-span / 2, span / 2), y + 30 + ofRandom(-span / 2, span / 2), span / 4);

this->circles.push_back(circle);

this->circles_life.push_back(255);

ofColor c;

c.setHsb(ofRandom(255), 220, 220);

this->circles_color.push_back(c);

}

this->frame.copyTo(this->pre_frame);

this->image.update();

this->fbo.begin();

ofClear(0);

ofBackground(0);

ofSetColor(255);

this->image.draw(ofGetWidth() / 2 - this->image.getWidth() / 2, 30);

for (int i = this->circles.size() - 1; i >= 0; i--) {

this->circles_life[i] -= 8;

if (this->circles_life[i] < 0) {

this->circles[i].get()->destroy();

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

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

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

}

else {

ofSetColor(this->circles_color[i], this->circles_life[i] + 128);

ofDrawCircle(this->circles[i].get()->getPosition(), this->circles[i].get()->getRadius());

}

this->fbo.end();

//this->fbo.readToPixels(pixels);

//this->save_image.setFromPixels(pixels);

//this->save_image.save(std::to_string(ofGetFrameNum()) + ".png", OF_IMAGE_QUALITY_BEST);

this->box2d.update();

}

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

void ofApp::draw() {

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180203

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