プログラミング de 落描き – ページ 744 – クリエイティブ・コーディングによる生成物とソース

2018年10月18日2018年10月18日

Relationship of random walk. openFrameworks

[ Video ]

[ About ]
Eddyさんのランダムウォーク同士の関係で絵を描くというアイデアをインスパイア。周りにいる数でサイズが変化します。

Relationship of random walk.

[ Source ]

#pragma once
#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) {};

	vector<Particle> particles;

	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;
};

#pragma once

#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) {};

vector<Particle> particles;

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	int span = 30;
	for (int x = 0; x <= ofGetWidth(); x += span) {

		for (int y = 0; y <= ofGetHeight(); y += span) {

			this->locations.push_back(ofPoint(x, y));
		}
	}

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

		vector<int> next_index = vector<int>();
		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j ){ continue; }

			float distance = this->locations[i].distance(this->locations[j]);
			if (distance <= span) {

				next_index.push_back(j);
			}
		}

		this->next_indexes.push_back(next_index);
	}

	for (int i = 0; i < 400; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }
}
//--------------------------------------------------------------
void ofApp::update() {

	for (Particle& particle : this->particles) { particle.Upate(); }
}

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

	for (Particle& particle : this->particles) { particle.Draw(this->particles); }
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

int span = 30;

for (int x = 0; x <= ofGetWidth(); x += span) {

for (int y = 0; y <= ofGetHeight(); y += span) {

this->locations.push_back(ofPoint(x, y));

}

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

vector<int> next_index = vector<int>();

for (int j = 0; j < this->locations.size(); j++) {

if (i == j ){ continue; }

float distance = this->locations[i].distance(this->locations[j]);

if (distance <= span) {

next_index.push_back(j);

}

this->next_indexes.push_back(next_index);

}

for (int i = 0; i < 400; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }

}

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

void ofApp::update() {

for (Particle& particle : this->particles) { particle.Upate(); }

}

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

void ofApp::draw() {

for (Particle& particle : this->particles) { particle.Draw(this->particles); }

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);
	~Particle();
	void Upate();
	void Draw(vector<Particle>& particles);

	ofPoint location;
private:

	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;

	int locations_index;
	int next_index;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);

~Particle();

void Upate();

void Draw(vector<Particle>& particles);

ofPoint location;

private:

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

int locations_index;

int next_index;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

	this->locations = locations;
	this->next_indexes = next_indexes;

	while (true) {

		this->locations_index = (int)ofRandom(this->locations.size());
		if (this->next_indexes[this->locations_index].size() > 0) {

			this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
			break;
		}
	}
}

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

}

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

	int frame_span = 20;

	if (ofGetFrameNum() % frame_span == 0) {

		this->locations_index = this->next_index;
		this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
	}

	ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];
	this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);
}

//--------------------------------------------------------------
void Particle::Draw(vector<Particle>& particles) {

	int count = 0;
	for (Particle& particle : particles) {

		if (this->location.distance(particle.location) < 50) {

			count++;
		}
	}

	ofDrawCircle(this->location, count);
	ofDrawLine(this->location, this->locations[this->locations_index]);
}

#include "Particle.h"

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

Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

this->locations = locations;

this->next_indexes = next_indexes;

while (true) {

this->locations_index = (int)ofRandom(this->locations.size());

if (this->next_indexes[this->locations_index].size() > 0) {

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

break;

}

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

Particle::~Particle() {

}

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

void Particle::Upate() {

int frame_span = 20;

if (ofGetFrameNum() % frame_span == 0) {

this->locations_index = this->next_index;

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

}

ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];

this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);

}

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

void Particle::Draw(vector<Particle>& particles) {

int count = 0;

for (Particle& particle : particles) {

if (this->location.distance(particle.location) < 50) {

count++;

}

ofDrawCircle(this->location, count);

ofDrawLine(this->location, this->locations[this->locations_index]);

}

[ Link ]
https://github.com/junkiyoshi/Insta20181018

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2018年10月17日2018年10月17日

Random walk on Gecko. openFrameworks

[ Video ]

[ About ]
本日の日替わりメニューヤモリのイラストにのせて

Random walk on Gecko.

[ Source ]

#pragma once
#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) {};

	ofFbo fbo;
	vector<Particle> particles;

	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;
};

#pragma once

#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) {};

ofFbo fbo;

vector<Particle> particles;

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	ofSetColor(239);

	ofImage image = ofImage("images/gecko.png");
	int span = 10;

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();
	ofClear(0);

	image.draw(5, 5);

	this->fbo.end();

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

	for (int x = 0; x < this->fbo.getWidth(); x += span) {

		for (int y = 0; y < this->fbo.getHeight(); y += span) {

			if (pixels.getColor(x, y) != ofColor(0, 0)) {

				this->locations.push_back(ofPoint(x, y));
			}
		}
	}

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

		vector<int> next_index = vector<int>();
		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j ){ continue; }

			float distance = this->locations[i].distance(this->locations[j]);
			if (distance <= span) {

				next_index.push_back(j);
			}
		}

		this->next_indexes.push_back(next_index);
	}

	for (int i = 0; i < 800; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }
}
//--------------------------------------------------------------
void ofApp::update() {

	for (Particle& particle : particles) { particle.Upate(); }
}

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

	for (Particle& particle : particles) { particle.Draw(); }
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetColor(239);

ofImage image = ofImage("images/gecko.png");

int span = 10;

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

this->fbo.begin();

ofClear(0);

image.draw(5, 5);

this->fbo.end();

ofPixels pixels;

this->fbo.readToPixels(pixels);

for (int x = 0; x < this->fbo.getWidth(); x += span) {

for (int y = 0; y < this->fbo.getHeight(); y += span) {

if (pixels.getColor(x, y) != ofColor(0, 0)) {

this->locations.push_back(ofPoint(x, y));

}

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

vector<int> next_index = vector<int>();

for (int j = 0; j < this->locations.size(); j++) {

if (i == j ){ continue; }

float distance = this->locations[i].distance(this->locations[j]);

if (distance <= span) {

next_index.push_back(j);

}

this->next_indexes.push_back(next_index);

}

for (int i = 0; i < 800; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }

}

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

void ofApp::update() {

for (Particle& particle : particles) { particle.Upate(); }

}

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

void ofApp::draw() {

for (Particle& particle : particles) { particle.Draw(); }

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);
	~Particle();
	void Upate();
	void Draw();
	
private:

	ofPoint location;
	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;

	int locations_index;
	int next_index;

	std::deque<ofPoint> logs;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);

~Particle();

void Upate();

void Draw();

private:

ofPoint location;

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

int locations_index;

int next_index;

std::deque<ofPoint> logs;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

	this->locations = locations;
	this->next_indexes = next_indexes;

	while (true) {

		this->locations_index = (int)ofRandom(this->locations.size());
		if (this->next_indexes[this->locations_index].size() > 0) {

			this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
			break;
		}
	}
}

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

}

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

	int frame_span = 20;

	if (ofGetFrameNum() % frame_span == 0) {

		this->locations_index = this->next_index;
		this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
	}

	ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];
	this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);

	this->logs.push_front(this->location);
	while (this->logs.size() > 45) { this->logs.pop_back(); }
}

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

	ofFill();
	ofDrawSphere(this->location, 2);

	ofNoFill();
	ofBeginShape();
	for (ofPoint& log : this->logs) {

		ofVertex(log);
	}
	ofEndShape();
}

#include "Particle.h"

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

Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

this->locations = locations;

this->next_indexes = next_indexes;

while (true) {

this->locations_index = (int)ofRandom(this->locations.size());

if (this->next_indexes[this->locations_index].size() > 0) {

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

break;

}

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

Particle::~Particle() {

}

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

void Particle::Upate() {

int frame_span = 20;

if (ofGetFrameNum() % frame_span == 0) {

this->locations_index = this->next_index;

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

}

ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];

this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);

this->logs.push_front(this->location);

while (this->logs.size() > 45) { this->logs.pop_back(); }

}

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

void Particle::Draw() {

ofFill();

ofDrawSphere(this->location, 2);

ofNoFill();

ofBeginShape();

for (ofPoint& log : this->logs) {

ofVertex(log);

}

ofEndShape();

}

[ Link ]
https://github.com/junkiyoshi/Insta20181017

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2018年10月16日2018年10月16日

Random walk on character. openFrameworks

[ Video ]

[ About ]
本日の日替わりメニューランダムウォークのランダムウォーク

Random walk on character.

[ Source ]

#pragma once
#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) {};

	ofFbo fbo;
	vector<Particle> particles;

	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;
};

#pragma once

#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) {};

ofFbo fbo;

vector<Particle> particles;

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	ofTrueTypeFont font;
	int font_size = 120;
	font.loadFont("fonts/Kazesawa-Bold.ttf", font_size, true, true, true);

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	font.drawString("RANDOM", font.stringWidth("RANDOM") * -0.5, font.stringHeight("RANDOM") * -0.5);
	font.drawString("WALK", font.stringWidth("WALK") * -0.5, font.stringHeight("WALK") * 1.5);

	this->fbo.end();

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

	int span = 10;

	ofColor pix_color;
	for (int x = 0; x < this->fbo.getWidth(); x += span) {

		for (int y = 0; y < this->fbo.getHeight(); y += span) {

			pix_color = pixels.getColor(x, y);
			if (pix_color == ofColor(39)) {

				this->locations.push_back(ofPoint(x, y));
			}
		}
	}

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

		vector<int> next_index = vector<int>();
		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j ){ continue; }

			float distance = this->locations[i].distance(this->locations[j]);
			if (distance <= span) {

				next_index.push_back(j);
			}
		}

		this->next_indexes.push_back(next_index);
	}

	for (int i = 0; i < 500; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }
}
//--------------------------------------------------------------
void ofApp::update() {

	for (Particle& particle : particles) { particle.Upate(); }
}

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

	for (Particle& particle : particles) { particle.Draw(); }
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofTrueTypeFont font;

int font_size = 120;

font.loadFont("fonts/Kazesawa-Bold.ttf", font_size, true, true, true);

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

this->fbo.begin();

ofClear(0);

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

font.drawString("RANDOM", font.stringWidth("RANDOM") * -0.5, font.stringHeight("RANDOM") * -0.5);

font.drawString("WALK", font.stringWidth("WALK") * -0.5, font.stringHeight("WALK") * 1.5);

this->fbo.end();

ofPixels pixels;

this->fbo.readToPixels(pixels);

int span = 10;

ofColor pix_color;

for (int x = 0; x < this->fbo.getWidth(); x += span) {

for (int y = 0; y < this->fbo.getHeight(); y += span) {

pix_color = pixels.getColor(x, y);

if (pix_color == ofColor(39)) {

this->locations.push_back(ofPoint(x, y));

}

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

vector<int> next_index = vector<int>();

for (int j = 0; j < this->locations.size(); j++) {

if (i == j ){ continue; }

float distance = this->locations[i].distance(this->locations[j]);

if (distance <= span) {

next_index.push_back(j);

}

this->next_indexes.push_back(next_index);

}

for (int i = 0; i < 500; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); }

}

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

void ofApp::update() {

for (Particle& particle : particles) { particle.Upate(); }

}

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

void ofApp::draw() {

for (Particle& particle : particles) { particle.Draw(); }

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);
	~Particle();
	void Upate();
	void Draw();
	
private:

	ofPoint location;
	vector<ofPoint> locations;
	vector<vector<int>> next_indexes;

	int locations_index;
	int next_index;

	std::deque<ofPoint> logs;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes);

~Particle();

void Upate();

void Draw();

private:

ofPoint location;

vector<ofPoint> locations;

vector<vector<int>> next_indexes;

int locations_index;

int next_index;

std::deque<ofPoint> logs;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

	this->locations = locations;
	this->next_indexes = next_indexes;
	this->locations_index = (int)ofRandom(this->locations.size());
	this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
}

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

}

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

	int frame_span = 20;

	if (ofGetFrameNum() % frame_span == 0) {

		this->locations_index = this->next_index;
		this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];
	}

	ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];
	this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);

	this->logs.push_front(this->location);
	while (this->logs.size() > 45) { this->logs.pop_back(); }
}

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

	ofFill();
	ofDrawSphere(this->location, 2);

	ofNoFill();
	ofBeginShape();
	for (ofPoint& log : this->logs) {

		ofVertex(log);
	}
	ofEndShape();
}

#include "Particle.h"

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

Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) {

this->locations = locations;

this->next_indexes = next_indexes;

this->locations_index = (int)ofRandom(this->locations.size());

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

}

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

Particle::~Particle() {

}

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

void Particle::Upate() {

int frame_span = 20;

if (ofGetFrameNum() % frame_span == 0) {

this->locations_index = this->next_index;

this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())];

}

ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index];

this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span);

this->logs.push_front(this->location);

while (this->logs.size() > 45) { this->logs.pop_back(); }

}

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

void Particle::Draw() {

ofFill();

ofDrawSphere(this->location, 2);

ofNoFill();

ofBeginShape();

for (ofPoint& log : this->logs) {

ofVertex(log);

}

ofEndShape();

}

[ Link ]
https://github.com/junkiyoshi/Insta20181016

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