openFrameworks – ページ 573 – プログラミング de 落描き

2019年8月8日2019年8月8日

Font wave. openFrameworks

[ Video ]

[ About ]
文字ウェーブ。

Font wave.

[ Source ]

#pragma once
#include "ofMain.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;

	int font_size;
	vector<ofPath> chara_path;
};

#pragma once

#include "ofMain.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;

int font_size;

vector<ofPath> chara_path;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(3);
	ofNoFill();
	ofEnableDepthTest();

	this->font_size = 300;
	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

	for (char c = 'A'; c <= 'Z'; c++) {

		this->chara_path.push_back(font.getCharacterAsPoints(c, true, false));
	}
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateZ(180);
	ofRotateY(180);

	int span = 380;
	for (int x = -span; x <= span; x += span) {

		for (int y = -span; y <= span; y += span) {

			ofPushMatrix();
			ofTranslate(x, y);

			int char_index = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, 0, this->chara_path.size());
			auto outline = this->chara_path[char_index].getOutline();
			for (int line_index = 0; line_index < outline.size(); line_index++) {

				outline[line_index] = outline[line_index].getResampledByCount(80);
				auto vertices = outline[line_index].getVertices();
				for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

					auto point = vertices[vertices_index] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);
					auto next_point = vertices[vertices_index + 1] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);
					if (vertices_index == vertices.size() - 1) {

						point = vertices[vertices_index] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);
						next_point = vertices[0] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);
					}
					auto z = ofMap(ofNoise((x + point.x) * 0.005, (y + point.y) * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0, -200);

					ofFill();
					ofSetColor(239);

					ofBeginShape();
					ofVertex(point);
					ofVertex(next_point);
					ofVertex(next_point + glm::vec3(0, 0, z));
					ofVertex(point + glm::vec3(0, 0, z));
					ofEndShape(true);

					ofNoFill();
					ofSetColor(39);

					ofBeginShape();
					ofVertex(point);
					ofVertex(next_point);
					ofVertex(next_point + glm::vec3(0, 0, z));
					ofVertex(point + glm::vec3(0, 0, z));
					ofEndShape(true);
				}
			}

			ofPopMatrix();
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
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(3);

ofNoFill();

ofEnableDepthTest();

this->font_size = 300;

ofTrueTypeFont font;

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

for (char c = 'A'; c <= 'Z'; c++) {

this->chara_path.push_back(font.getCharacterAsPoints(c, true, false));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(180);

ofRotateY(180);

int span = 380;

for (int x = -span; x <= span; x += span) {

for (int y = -span; y <= span; y += span) {

ofPushMatrix();

ofTranslate(x, y);

int char_index = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, 0, this->chara_path.size());

auto outline = this->chara_path[char_index].getOutline();

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

outline[line_index] = outline[line_index].getResampledByCount(80);

auto vertices = outline[line_index].getVertices();

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

auto point = vertices[vertices_index] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);

auto next_point = vertices[vertices_index + 1] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);

if (vertices_index == vertices.size() - 1) {

point = vertices[vertices_index] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);

next_point = vertices[0] + glm::vec2(this->font_size * -0.5, this->font_size * 0.5);

}

auto z = ofMap(ofNoise((x + point.x) * 0.005, (y + point.y) * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0, -200);

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertex(point);

ofVertex(next_point);

ofVertex(next_point + glm::vec3(0, 0, z));

ofVertex(point + glm::vec3(0, 0, z));

ofEndShape(true);

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertex(point);

ofVertex(next_point);

ofVertex(next_point + glm::vec3(0, 0, z));

ofVertex(point + glm::vec3(0, 0, z));

ofEndShape(true);

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190808

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2019年8月7日2019年8月7日

Unfinished sphere. openFrameworks

[ Video ]

[ About ]
未完成の球体。

Unfinished sphere.

[ Source ]

#pragma once
#include "ofMain.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;
};

#pragma once

#include "ofMain.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;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum());

	auto deg_span = 15;
	auto theta_span = 5;
	for (int radius = 100; radius <= 300; radius += 75) {

		for (int deg = 0; deg < 360; deg += deg_span) {

			auto noise_source = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			int theta = ofMap(ofNoise(noise_source.x * 0.005, noise_source.y * 0.005, ofGetFrameNum() * 0.008), 0, 1, 0, 180);

			if (theta > 90) {

				for (int tmp_theta = 90; tmp_theta < theta; tmp_theta += theta_span) {

					vector<glm::vec3> vertices_1, vertices_2;
					for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) {

						vertices_1.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * cos(tmp_theta * DEG_TO_RAD)));
						vertices_2.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * cos((tmp_theta + theta_span) * DEG_TO_RAD)));
					}

					reverse(vertices_2.begin(), vertices_2.end());

					ofFill();
					ofSetColor(239);

					ofBeginShape();
					ofVertices(vertices_1);
					ofVertices(vertices_2);
					ofEndShape(true);

					ofNoFill();
					ofSetColor(39);

					ofBeginShape();
					ofVertices(vertices_1);
					ofVertices(vertices_2);
					ofEndShape(true);
				}
			}
			else {

				for (int tmp_theta = 90; tmp_theta > theta; tmp_theta -= theta_span) {

					vector<glm::vec3> vertices_1, vertices_2;
					for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) {

						vertices_1.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * cos(tmp_theta * DEG_TO_RAD)));
						vertices_2.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * cos((tmp_theta + theta_span) * DEG_TO_RAD)));
					}

					reverse(vertices_2.begin(), vertices_2.end());

					ofFill();
					ofSetColor(239);

					ofBeginShape();
					ofVertices(vertices_1);
				ofVertices(vertices_2);
					ofEndShape(true);

					ofNoFill();
					ofSetColor(39);

					ofBeginShape();
					ofVertices(vertices_1);
					ofVertices(vertices_2);
					ofEndShape(true);
				}
			}
		}
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum());

auto deg_span = 15;

auto theta_span = 5;

for (int radius = 100; radius <= 300; radius += 75) {

for (int deg = 0; deg < 360; deg += deg_span) {

auto noise_source = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

int theta = ofMap(ofNoise(noise_source.x * 0.005, noise_source.y * 0.005, ofGetFrameNum() * 0.008), 0, 1, 0, 180);

if (theta > 90) {

for (int tmp_theta = 90; tmp_theta < theta; tmp_theta += theta_span) {

vector<glm::vec3> vertices_1, vertices_2;

for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) {

vertices_1.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin(tmp_theta * DEG_TO_RAD), radius * cos(tmp_theta * DEG_TO_RAD)));

vertices_2.push_back(glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD) * sin((tmp_theta + theta_span) * DEG_TO_RAD), radius * cos((tmp_theta + theta_span) * DEG_TO_RAD)));

}

reverse(vertices_2.begin(), vertices_2.end());

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

}

else {

for (int tmp_theta = 90; tmp_theta > theta; tmp_theta -= theta_span) {

vector<glm::vec3> vertices_1, vertices_2;

for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) {

}

reverse(vertices_2.begin(), vertices_2.end());

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190807

[ほしいものリスト]
Amazon

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2019年8月6日2019年8月6日

Visualize relationship of flock. openFrameworks

[ Video ]

[ About ]
群れの関係性を可視化。

Visualize relationship of flock.

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

	int number_of_particle;
	vector<unique_ptr<Particle>> particles;
};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

int number_of_particle;

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2.5);

	this->number_of_particle = 25;
	for (int i = 0; i < this->number_of_particle; i++) {

		auto particle = make_unique<Particle>();
		this->particles.push_back(move(particle));
	}
}

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

	for (auto& particle : this->particles) {

		particle->update(this->particles);
	}
}

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

	for (auto& 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(2.5);

this->number_of_particle = 25;

for (int i = 0; i < this->number_of_particle; i++) {

auto particle = make_unique<Particle>();

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

}

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

void ofApp::update() {

for (auto& particle : this->particles) {

particle->update(this->particles);

}

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

void ofApp::draw() {

for (auto& 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();
	~Particle();

	void update(vector<unique_ptr<Particle>>& particles);
	void draw(vector<unique_ptr<Particle>>& particles);
	glm::vec2 separate(vector<unique_ptr<Particle>>& particles);
	glm::vec2 align(vector<unique_ptr<Particle>>& particles);
	glm::vec2 cohesion(vector<unique_ptr<Particle>>& particles);
	glm::vec2 seek(glm::vec2 target);
	void applyForce(glm::vec2 force);

private:
	glm::vec2 location;
	glm::vec2 velocity;
	glm::vec2 acceleration;

	float range;
	float max_force;
	float max_speed;
	int wall;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

~Particle();

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

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

glm::vec2 separate(vector<unique_ptr<Particle>>& particles);

glm::vec2 align(vector<unique_ptr<Particle>>& particles);

glm::vec2 cohesion(vector<unique_ptr<Particle>>& particles);

glm::vec2 seek(glm::vec2 target);

void applyForce(glm::vec2 force);

private:

glm::vec2 location;

glm::vec2 velocity;

glm::vec2 acceleration;

float range;

float max_force;

float max_speed;

int wall;

};

#include "Particle.h"

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

	this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
	this->velocity = glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1));

	this->range = 60;
	this->max_force = 1;
	this->max_speed = 6;
	this->wall = 5;
}

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

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

	// 分離
	glm::vec2 separate = this->separate(particles);
	this->applyForce(separate);

	// 整列
	glm::vec2 align = this->align(particles);
	this->applyForce(align);

	// 結合
	glm::vec2 cohesion = this->cohesion(particles);
	this->applyForce(cohesion);

	// 自我
	if (glm::length(this->velocity) > 0) {

		glm::vec2 future = glm::normalize(this->velocity) * this->range;
		future += this->location;

		float angle = ofRandom(360);
		glm::vec2 target = future + glm::vec2(this->range * 0.5 * cos(angle * DEG_TO_RAD), this->range * 0.5 * sin(angle * DEG_TO_RAD));

		glm::vec2 ego = this->seek(target);
		this->applyForce(ego);
	}

	// 境界
	glm::vec2 correction;
	if (this->location.x < this->wall) {

		correction += glm::vec2(max_speed, this->velocity.y);
	}
	else if (this->location.x > ofGetWidth() - this->wall) {

		correction += glm::vec2(-max_speed, this->velocity.y);
	}

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

		correction += glm::vec2(this->velocity.x, max_speed);
	}
	else if (this->location.y > ofGetHeight() - this->wall) {

		correction += glm::vec2(this->velocity.x, -max_speed);
	}

	if (glm::length(correction) > this->max_force) {

		correction = glm::normalize(correction) * this->max_force;
	}
	this->applyForce(correction);

	// 前進
	this->velocity += this->acceleration;
	if (glm::length(this->velocity) > this->max_speed) {

		this->velocity = glm::normalize(this->velocity) * this->max_speed;
	}
	this->location += this->velocity;
	this->acceleration *= 0;
	this->velocity *= 0.9;
}

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

	int radius = 30;
	int len = 10;
	int threshold = 120;
	vector<glm::vec2> vertices_1, vertices_2;
	for (auto deg = 0; deg < 360; deg += 5) {

		vertices_1.push_back(glm::vec2(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD)));
		vertices_2.push_back(glm::vec2(location.x + (radius - len) * cos(deg * DEG_TO_RAD), location.y + (radius - len) * sin(deg * DEG_TO_RAD)));
	}

	ofNoFill();

	ofBeginShape();
	ofVertices(vertices_1);
	ofEndShape(true);

	ofBeginShape();
	ofVertices(vertices_2);
	ofEndShape(true);

	for (auto& other : particles) {

		if (this->location == other->location) {

			continue;
		}

		auto distance = glm::distance(location, other->location);
		if (distance < threshold) {

			auto direction_rad = std::atan2(other->location.y - location.y, other->location.x - location.x);
			auto direction = direction_rad * RAD_TO_DEG;
			auto width = ofMap(distance, 0, threshold, 360, 0);

			vector<glm::vec2> in, out;
			for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

				in.push_back(glm::vec2(location.x + (radius - len) *cos(deg * DEG_TO_RAD), location.y + (radius - len) * sin(deg * DEG_TO_RAD)));
				out.push_back(glm::vec2(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD)));
			}

			reverse(out.begin(), out.end());

			ofFill();
			ofBeginShape();
			ofVertices(in);
			ofVertices(out);
			ofEndShape();

			ofDrawLine(location + glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),
				other->location + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));
		}
	}
}

//--------------------------------------------------------------
glm::vec2 Particle::separate(vector<unique_ptr<Particle>>& particles) {

	float tmp_range = this->range;

	glm::vec2 result;
	glm::vec2 sum;
	int count = 0;
	for (auto& other : particles) {

		glm::vec2 difference = this->location - other->location;
		float len = glm::length(difference);
		if (len > 0 && len < tmp_range) {

			sum += glm::normalize(difference);
			count++;
		}
	}

	if (count > 0) {

		glm::vec2 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec2 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

			steer = glm::normalize(steer) * this->max_force;
		}
		result = steer;
	}

	return result;
}

//--------------------------------------------------------------
glm::vec2 Particle::align(vector<unique_ptr<Particle>>& particles) {

	float tmp_range = this->range;

	glm::vec2 result;
	glm::vec2 sum;
	int count = 0;
	for (auto& other : particles) {

		glm::vec2 difference = this->location - other->location;
		float len = glm::length(difference);
		if (len > 0 && len < tmp_range) {

			sum += other->velocity;
			count++;
		}
	}

	if (count > 0) {

		glm::vec2 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec2 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

			steer = glm::normalize(steer) * this->max_force;
		}
		result = steer;
	}

	return result;
}

//--------------------------------------------------------------
glm::vec2 Particle::cohesion(vector<unique_ptr<Particle>>& particles) {

	float tmp_range = this->range * 0.5;

	glm::vec2 result;
	glm::vec2 sum;
	int count = 0;
	for (auto& other : particles) {

		glm::vec2 difference = this->location - other->location;
		float len = glm::length(difference);
		if (len > 0 && len < tmp_range) {

			sum += other->location;
			count++;
		}
	}

	if (count > 0) {

		result = this->seek(sum / count);
	}

	return result;
}

//--------------------------------------------------------------
glm::vec2 Particle::seek(glm::vec2 target) {

	glm::vec2 desired = target - this->location;
	float distance = glm::length(desired);
	desired = glm::normalize(desired);
	desired *= distance < this->range ? ofMap(distance, 0, this->range, 0, this->max_speed) : max_speed;
	glm::vec2 steer = desired - this->velocity;
	if (glm::length(steer) > this->max_force) {

		steer = glm::normalize(steer) * this->max_force;
	}
	return steer;
}

//--------------------------------------------------------------
void Particle::applyForce(glm::vec2 force) {

	this->acceleration += force;
}

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#include "Particle.h"

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

Particle::Particle() {

this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));

this->velocity = glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1));

this->range = 60;

this->max_force = 1;

this->max_speed = 6;

this->wall = 5;

}

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

Particle::~Particle() { }

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

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

// 分離

glm::vec2 separate = this->separate(particles);

this->applyForce(separate);

// 整列

glm::vec2 align = this->align(particles);

this->applyForce(align);

// 結合

glm::vec2 cohesion = this->cohesion(particles);

this->applyForce(cohesion);

// 自我

if (glm::length(this->velocity) > 0) {

glm::vec2 future = glm::normalize(this->velocity) * this->range;

future += this->location;

float angle = ofRandom(360);

glm::vec2 target = future + glm::vec2(this->range * 0.5 * cos(angle * DEG_TO_RAD), this->range * 0.5 * sin(angle * DEG_TO_RAD));

glm::vec2 ego = this->seek(target);

this->applyForce(ego);

}

// 境界

glm::vec2 correction;

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

correction += glm::vec2(max_speed, this->velocity.y);

}

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

correction += glm::vec2(-max_speed, this->velocity.y);

}

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

correction += glm::vec2(this->velocity.x, max_speed);

}

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

correction += glm::vec2(this->velocity.x, -max_speed);

}

if (glm::length(correction) > this->max_force) {

correction = glm::normalize(correction) * this->max_force;

}

this->applyForce(correction);

// 前進

this->velocity += this->acceleration;

if (glm::length(this->velocity) > this->max_speed) {

this->velocity = glm::normalize(this->velocity) * this->max_speed;

}

this->location += this->velocity;

this->acceleration *= 0;

this->velocity *= 0.9;

}

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

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

int radius = 30;

int len = 10;

int threshold = 120;

vector<glm::vec2> vertices_1, vertices_2;

for (auto deg = 0; deg < 360; deg += 5) {

vertices_1.push_back(glm::vec2(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD)));

vertices_2.push_back(glm::vec2(location.x + (radius - len) * cos(deg * DEG_TO_RAD), location.y + (radius - len) * sin(deg * DEG_TO_RAD)));

}

ofNoFill();

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(true);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(true);

for (auto& other : particles) {

if (this->location == other->location) {

continue;

}

auto distance = glm::distance(location, other->location);

if (distance < threshold) {

auto direction_rad = std::atan2(other->location.y - location.y, other->location.x - location.x);

auto direction = direction_rad * RAD_TO_DEG;

auto width = ofMap(distance, 0, threshold, 360, 0);

vector<glm::vec2> in, out;

for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

in.push_back(glm::vec2(location.x + (radius - len) *cos(deg * DEG_TO_RAD), location.y + (radius - len) * sin(deg * DEG_TO_RAD)));

out.push_back(glm::vec2(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD)));

}

reverse(out.begin(), out.end());

ofFill();

ofBeginShape();

ofVertices(in);

ofVertices(out);

ofEndShape();

ofDrawLine(location + glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),

other->location + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));

}

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

glm::vec2 Particle::separate(vector<unique_ptr<Particle>>& particles) {

float tmp_range = this->range;

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

glm::vec2 difference = this->location - other->location;

float len = glm::length(difference);

if (len > 0 && len < tmp_range) {

sum += glm::normalize(difference);

count++;

}

if (count > 0) {

glm::vec2 avg = sum / count;

avg = avg * this->max_speed;

if (glm::length(avg) > this->max_speed) {

avg = glm::normalize(avg) * this->max_speed;

}

glm::vec2 steer = avg - this->velocity;

if (glm::length(steer) > this->max_force) {

steer = glm::normalize(steer) * this->max_force;

}

result = steer;

}

return result;

}

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

glm::vec2 Particle::align(vector<unique_ptr<Particle>>& particles) {

float tmp_range = this->range;

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

glm::vec2 difference = this->location - other->location;

float len = glm::length(difference);

if (len > 0 && len < tmp_range) {

sum += other->velocity;

count++;

}

if (count > 0) {

glm::vec2 avg = sum / count;

avg = avg * this->max_speed;

if (glm::length(avg) > this->max_speed) {

avg = glm::normalize(avg) * this->max_speed;

}

glm::vec2 steer = avg - this->velocity;

if (glm::length(steer) > this->max_force) {

steer = glm::normalize(steer) * this->max_force;

}

result = steer;

}

return result;

}

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

glm::vec2 Particle::cohesion(vector<unique_ptr<Particle>>& particles) {

float tmp_range = this->range * 0.5;

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

glm::vec2 difference = this->location - other->location;

float len = glm::length(difference);

if (len > 0 && len < tmp_range) {

sum += other->location;

count++;

}

if (count > 0) {

result = this->seek(sum / count);

}

return result;

}

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

glm::vec2 Particle::seek(glm::vec2 target) {

glm::vec2 desired = target - this->location;

float distance = glm::length(desired);

desired = glm::normalize(desired);

desired *= distance < this->range ? ofMap(distance, 0, this->range, 0, this->max_speed) : max_speed;

glm::vec2 steer = desired - this->velocity;

if (glm::length(steer) > this->max_force) {

steer = glm::normalize(steer) * this->max_force;

}

return steer;

}

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

void Particle::applyForce(glm::vec2 force) {

this->acceleration += force;

}

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https://github.com/junkiyoshi/Insta20190806

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