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2020年10月6日2020年10月6日

Creative coding fish. Draw by openFrameworks

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Creative coding fish.

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#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) {};

	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) {};

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	for (int i = 0; i < 800; 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();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

for (int i = 0; i < 800; 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();

}

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

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();
	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;
	vector<glm::vec2> log;

	float range;
	float max_force;
	float max_speed;
	ofColor color;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

~Particle();

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

void draw();

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;

vector<glm::vec2> log;

float range;

float max_force;

float max_speed;

ofColor color;

};

#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 = 30;
	this->max_force = 1;
	this->max_speed = 8;

	ofColor color;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	vector<ofColor> base_color_list;
	for (auto hex : hex_list) {

		color.setHex(hex);
		base_color_list.push_back(color);
	}

	this->color = base_color_list[(int)ofRandom(base_color_list.size())];
}

//--------------------------------------------------------------
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
	if (glm::length(this->location - glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5)) > 500) {

		glm::vec2 area = this->seek(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5));
		this->applyForce(area);
	}

	// 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 *= 0.98;

	// 記録
	this->log.push_back(this->location);
	while (this->log.size() > 10) {

		this->log.erase(this->log.begin());
	}
}

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

	if (this->log.size() < 3) { return; }

	auto head_size = 3;
	ofMesh mesh;
	vector<glm::vec3> right, left;
	glm::vec3 last_location;
	float last_theta;

	for (int k = 0; k < this->log.size() - 1; k++) {

		auto loc = glm::vec3(this->log[k], 0);
		auto next = glm::vec3(this->log[k + 1], 0);

		auto direction = next - loc;
		auto theta = atan2(direction.y, direction.x);

		right.push_back(loc + glm::vec3(ofMap(k, 0, this->log.size(), 0, head_size) * cos(theta + PI * 0.5), ofMap(k, 0, this->log.size(), 0, head_size) * sin(theta + PI * 0.5), 0));
		left.push_back(loc + glm::vec3(ofMap(k, 0, this->log.size(), 0, head_size) * cos(theta - PI * 0.5), ofMap(k, 0, this->log.size(), 0, head_size) * sin(theta - PI * 0.5), 0));

		last_location = loc;
		last_theta = theta;
	}

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

		mesh.addVertex(left[k]);
		mesh.addVertex(right[k]);

		mesh.addColor(ofColor(this->color, ofMap(k, 0, this->log.size(), 0, 255)));
		mesh.addColor(ofColor(this->color, ofMap(k, 0, this->log.size(), 0, 255)));
	}

	for (int k = 0; k < mesh.getNumVertices() - 2; k += 2) {

		mesh.addIndex(k + 0); mesh.addIndex(k + 1); mesh.addIndex(k + 3);
		mesh.addIndex(k + 0); mesh.addIndex(k + 2); mesh.addIndex(k + 3);
	}

	auto tmp_header_size = ofMap(this->log.size() - 2, 0, this->log.size(), 0, head_size);
	auto tmp_alpha = ofMap(this->log.size() - 2, 0, this->log.size(), 0, 255);

	mesh.addVertex(last_location);
	mesh.addColor(ofColor(this->color, tmp_alpha));

	int index = mesh.getNumVertices();
	for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

		mesh.addVertex(last_location + glm::vec3(tmp_header_size * cos(theta), tmp_header_size * sin(theta), 0));
		mesh.addColor(ofColor(this->color, tmp_alpha));
	}

	for (int k = index; k < mesh.getNumVertices() - 1; k++) {

		mesh.addIndex(index); mesh.addIndex(k + 0); mesh.addIndex(k + 1);
	}

	mesh.draw();
}

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

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

		glm::vec2 difference = this->location - other->location;
		if (glm::length(difference) > 0 && glm::length(difference) < this->range * 0.5) {

			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) {

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

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

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

		glm::vec2 difference = this->location - other->location;
		if (glm::length(difference) > 0 && glm::length(difference) < this->range * 0.5) {

			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 = 30;

this->max_force = 1;

this->max_speed = 8;

ofColor color;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

vector<ofColor> base_color_list;

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

this->color = base_color_list[(int)ofRandom(base_color_list.size())];

}

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

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

if (glm::length(this->location - glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5)) > 500) {

glm::vec2 area = this->seek(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5));

this->applyForce(area);

}

// 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 *= 0.98;

// 記録

this->log.push_back(this->location);

while (this->log.size() > 10) {

this->log.erase(this->log.begin());

}

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

void Particle::draw() {

if (this->log.size() < 3) { return; }

auto head_size = 3;

ofMesh mesh;

vector<glm::vec3> right, left;

glm::vec3 last_location;

float last_theta;

for (int k = 0; k < this->log.size() - 1; k++) {

auto loc = glm::vec3(this->log[k], 0);

auto next = glm::vec3(this->log[k + 1], 0);

auto direction = next - loc;

auto theta = atan2(direction.y, direction.x);

right.push_back(loc + glm::vec3(ofMap(k, 0, this->log.size(), 0, head_size) * cos(theta + PI * 0.5), ofMap(k, 0, this->log.size(), 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(loc + glm::vec3(ofMap(k, 0, this->log.size(), 0, head_size) * cos(theta - PI * 0.5), ofMap(k, 0, this->log.size(), 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = loc;

last_theta = theta;

}

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

mesh.addVertex(left[k]);

mesh.addVertex(right[k]);

mesh.addColor(ofColor(this->color, ofMap(k, 0, this->log.size(), 0, 255)));

}

for (int k = 0; k < mesh.getNumVertices() - 2; k += 2) {

mesh.addIndex(k + 0); mesh.addIndex(k + 1); mesh.addIndex(k + 3);

mesh.addIndex(k + 0); mesh.addIndex(k + 2); mesh.addIndex(k + 3);

}

auto tmp_header_size = ofMap(this->log.size() - 2, 0, this->log.size(), 0, head_size);

auto tmp_alpha = ofMap(this->log.size() - 2, 0, this->log.size(), 0, 255);

mesh.addVertex(last_location);

mesh.addColor(ofColor(this->color, tmp_alpha));

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(tmp_header_size * cos(theta), tmp_header_size * sin(theta), 0));

mesh.addColor(ofColor(this->color, tmp_alpha));

}

for (int k = index; k < mesh.getNumVertices() - 1; k++) {

mesh.addIndex(index); mesh.addIndex(k + 0); mesh.addIndex(k + 1);

}

mesh.draw();

}

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

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

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

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

if (glm::length(difference) > 0 && glm::length(difference) < this->range * 0.5) {

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) {

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

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

if (glm::length(difference) > 0 && glm::length(difference) < this->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) {

glm::vec2 result;

glm::vec2 sum;

int count = 0;

for (auto& other : particles) {

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

if (glm::length(difference) > 0 && glm::length(difference) < this->range * 0.5) {

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;

}

[ Link ]
https://github.com/junkiyoshi/Insta20201006

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2020年1月13日

Belts flock and target red. openFrameworks

[ Video ]

[ About ]
帯の群れにして個体を追従。

Belts flock and target red.

[ Source ]

#pragma once
#include "ofMain.h"
#include "Actor.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 number_of_particle;
	vector<unique_ptr<Actor>> actor_list;
};

#pragma once

#include "ofMain.h"

#include "Actor.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 number_of_particle;

vector<unique_ptr<Actor>> actor_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	auto actor = make_unique<Actor>(ofColor(255, 0, 0));
	this->actor_list.push_back(move(actor));

	this->number_of_particle = 500;
	for (int i = 0; i < this->number_of_particle; i++) {

		auto actor = make_unique<Actor>();
		this->actor_list.push_back(move(actor));
	}
}

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

	for (auto& actor : this->actor_list) {

		actor->think(this->actor_list);
	}

	for (auto& actor : this->actor_list) {

		actor->update();
	}
}

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

	this->cam.lookAt(this->actor_list.front()->get_location());
	this->cam.setPosition(this->actor_list.front()->get_last_log() + glm::vec3(0, 0, 100));
	this->cam.begin();

	for (auto& actor : this->actor_list) {

		actor->draw();
	}

	this->cam.end();
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

auto actor = make_unique<Actor>(ofColor(255, 0, 0));

this->actor_list.push_back(move(actor));

this->number_of_particle = 500;

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

auto actor = make_unique<Actor>();

this->actor_list.push_back(move(actor));

}

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

void ofApp::update() {

for (auto& actor : this->actor_list) {

actor->think(this->actor_list);

}

for (auto& actor : this->actor_list) {

actor->update();

}

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

void ofApp::draw() {

this->cam.lookAt(this->actor_list.front()->get_location());

this->cam.setPosition(this->actor_list.front()->get_last_log() + glm::vec3(0, 0, 100));

this->cam.begin();

for (auto& actor : this->actor_list) {

actor->draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor();
	Actor(ofColor color);
	~Actor();

	void think(vector<unique_ptr<Actor>>& particles);
	void update();
	void draw();
	glm::vec3 separate(vector<unique_ptr<Actor>>& particles);
	glm::vec3 align(vector<unique_ptr<Actor>>& particles);
	glm::vec3 cohesion(vector<unique_ptr<Actor>>& particles);
	glm::vec3 seek(glm::vec3 target);
	void applyForce(glm::vec3 force);

	glm::vec3 get_location();
	glm::vec3 get_last_log();

private:
	glm::vec3 location;
	glm::vec3 velocity;
	glm::vec3 acceleration;
	glm::vec3 param;
	deque<glm::vec3> log_list;

	float range;
	float max_force;
	float max_speed;
	int len;
	ofColor color;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor();

Actor(ofColor color);

~Actor();

void think(vector<unique_ptr<Actor>>& particles);

void update();

void draw();

glm::vec3 separate(vector<unique_ptr<Actor>>& particles);

glm::vec3 align(vector<unique_ptr<Actor>>& particles);

glm::vec3 cohesion(vector<unique_ptr<Actor>>& particles);

glm::vec3 seek(glm::vec3 target);

void applyForce(glm::vec3 force);

glm::vec3 get_location();

glm::vec3 get_last_log();

private:

glm::vec3 location;

glm::vec3 velocity;

glm::vec3 acceleration;

glm::vec3 param;

deque<glm::vec3> log_list;

float range;

float max_force;

float max_speed;

int len;

ofColor color;

};

#include "Actor.h"

//--------------------------------------------------------------
Actor::Actor() : Actor(ofColor(39)) { }

//--------------------------------------------------------------
Actor::Actor(ofColor color) {

	this->location = glm::vec3(ofRandom(-300, 300), ofRandom(-300, 300), ofRandom(-300, 300));
	this->velocity = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

	this->range = 40;
	this->max_force = 1;
	this->max_speed = 6;

	this->color = color;
	this->len = 50;

	switch ((int)ofRandom(3)) {
	case 0:
		this->param = glm::vec3(5, 0, 0);
		break;
	case 1:
		this->param = glm::vec3(0, 5, 0);
		break;
	case 2:
		this->param = glm::vec3(0, 0, 5);
		break;
	}
}

//--------------------------------------------------------------
Actor::~Actor() {

}

//--------------------------------------------------------------
void Actor::think(vector<unique_ptr<Actor>>& Actors) {

	// 分離
	glm::vec3 separate = this->separate(Actors);
	this->applyForce(separate * 1.05);

	// 整列
	glm::vec3 align = this->align(Actors);
	this->applyForce(align);

	// 結合
	glm::vec3 cohesion = this->cohesion(Actors);
	this->applyForce(cohesion);

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

		glm::vec3 feature = this->location + glm::normalize(velocity) * this->range;
		glm::vec3 target = feature + glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1))) * this->range * 0.5;
		glm::vec3 ego = this->seek(target);

		this->applyForce(ego);
	}

	// 境界
	if (glm::length(this->location - glm::vec3()) > 600) {

		glm::vec3 area = this->seek(glm::vec3());
		this->applyForce(area * 5);
	}
}

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

	// 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;

	this->log_list.push_front(this->location);
	while (this->log_list.size() > this->len) {

		this->log_list.pop_back();
	}
}

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

	ofMesh face, frame;
	frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	for (int i = 0; i < this->log_list.size() * 0.75; i++) {

		auto log = this->log_list[i];

		face.addVertex(log + this->param);
		face.addVertex(log - this->param);

		frame.addVertex(log + this->param);
		frame.addVertex(log - this->param);

		if (i > 0) {

			face.addIndex(i * 2); face.addIndex(i * 2 - 1); face.addIndex(i * 2 - 2);
			face.addIndex(i * 2); face.addIndex(i * 2 + 1); face.addIndex(i * 2 - 1);

			frame.addIndex(i * 2); frame.addIndex(i * 2 - 2);
			frame.addIndex(i * 2 + 1); frame.addIndex(i * 2 - 1);
		}
	}

	frame.addIndex(0); frame.addIndex(1);
	frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);

	ofSetColor(this->color);
	face.drawFaces();

	ofSetColor(239);
	frame.drawWireframe();
}

//--------------------------------------------------------------
glm::vec3 Actor::separate(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range * 0.5;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 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::vec3 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec3 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

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

	return result;
}

//--------------------------------------------------------------
glm::vec3 Actor::align(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 difference = this->location - other->location;
		float len = glm::length(difference);
		if (len > 0 && len < tmp_range) {

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

	if (count > 0) {

		glm::vec3 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec3 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

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

	return result;
}

//--------------------------------------------------------------
glm::vec3 Actor::cohesion(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range * 0.5;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 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::vec3 Actor::seek(glm::vec3 target) {

	glm::vec3 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::vec3 steer = desired - this->velocity;
	if (glm::length(steer) > this->max_force) {

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

//--------------------------------------------------------------
void Actor::applyForce(glm::vec3 force) {

	this->acceleration += force;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_location() {

	return this->location;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_last_log() {

	return this->log_list.back();
}

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#include "Actor.h"

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

Actor::Actor() : Actor(ofColor(39)) { }

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

Actor::Actor(ofColor color) {

this->location = glm::vec3(ofRandom(-300, 300), ofRandom(-300, 300), ofRandom(-300, 300));

this->velocity = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

this->range = 40;

this->max_force = 1;

this->max_speed = 6;

this->color = color;

this->len = 50;

switch ((int)ofRandom(3)) {

case 0:

this->param = glm::vec3(5, 0, 0);

break;

case 1:

this->param = glm::vec3(0, 5, 0);

break;

case 2:

this->param = glm::vec3(0, 0, 5);

break;

}

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

Actor::~Actor() {

}

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

void Actor::think(vector<unique_ptr<Actor>>& Actors) {

// 分離

glm::vec3 separate = this->separate(Actors);

this->applyForce(separate * 1.05);

// 整列

glm::vec3 align = this->align(Actors);

this->applyForce(align);

// 結合

glm::vec3 cohesion = this->cohesion(Actors);

this->applyForce(cohesion);

// 自我

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

glm::vec3 feature = this->location + glm::normalize(velocity) * this->range;

glm::vec3 target = feature + glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1))) * this->range * 0.5;

glm::vec3 ego = this->seek(target);

this->applyForce(ego);

}

// 境界

if (glm::length(this->location - glm::vec3()) > 600) {

glm::vec3 area = this->seek(glm::vec3());

this->applyForce(area * 5);

}

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

void Actor::update() {

// 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;

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

while (this->log_list.size() > this->len) {

this->log_list.pop_back();

}

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

void Actor::draw() {

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int i = 0; i < this->log_list.size() * 0.75; i++) {

auto log = this->log_list[i];

face.addVertex(log + this->param);

face.addVertex(log - this->param);

frame.addVertex(log + this->param);

frame.addVertex(log - this->param);

if (i > 0) {

face.addIndex(i * 2); face.addIndex(i * 2 - 1); face.addIndex(i * 2 - 2);

face.addIndex(i * 2); face.addIndex(i * 2 + 1); face.addIndex(i * 2 - 1);

frame.addIndex(i * 2); frame.addIndex(i * 2 - 2);

frame.addIndex(i * 2 + 1); frame.addIndex(i * 2 - 1);

}

frame.addIndex(0); frame.addIndex(1);

frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);

ofSetColor(this->color);

face.drawFaces();

ofSetColor(239);

frame.drawWireframe();

}

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

glm::vec3 Actor::separate(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 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::vec3 avg = sum / count;

avg = avg * this->max_speed;

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

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

}

glm::vec3 steer = avg - this->velocity;

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

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

}

result = steer;

}

return result;

}

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

glm::vec3 Actor::align(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 difference = this->location - other->location;

float len = glm::length(difference);

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

sum += other->velocity;

count++;

}

if (count > 0) {

glm::vec3 avg = sum / count;

avg = avg * this->max_speed;

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

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

}

glm::vec3 steer = avg - this->velocity;

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

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

}

result = steer;

}

return result;

}

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

glm::vec3 Actor::cohesion(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 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::vec3 Actor::seek(glm::vec3 target) {

glm::vec3 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::vec3 steer = desired - this->velocity;

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

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

}

return steer;

}

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

void Actor::applyForce(glm::vec3 force) {

this->acceleration += force;

}

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

glm::vec3 Actor::get_location() {

return this->location;

}

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

glm::vec3 Actor::get_last_log() {

return this->log_list.back();

}

[ Link ]
https://github.com/junkiyoshi/Insta20200113

[ほしいものリスト]
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[ Sponsor Link ]

2020年1月10日2020年1月10日

Focus to red actor of flock. openFrameworks

[ Movie ]

[ About ]
群れアルゴリズムで特定の個体を追従する。

Focus to red actor of flock.

[ Source ]

#pragma once
#include "ofMain.h"
#include "Actor.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 number_of_particle;
	vector<unique_ptr<Actor>> actor_list;
};

#pragma once

#include "ofMain.h"

#include "Actor.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 number_of_particle;

vector<unique_ptr<Actor>> actor_list;

};

#include "ofApp.h"

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

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

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

	auto actor = make_unique<Actor>(ofColor(255, 0, 0));
	this->actor_list.push_back(move(actor));

	this->number_of_particle = 200;
	for (int i = 0; i < this->number_of_particle; i++) {

		auto actor = make_unique<Actor>();
		this->actor_list.push_back(move(actor));
	}
}

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

	for (auto& actor : this->actor_list){

		actor->think(this->actor_list);
	}

	for (auto& actor : this->actor_list) {

		actor->update();
	}
}

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

	this->cam.lookAt(this->actor_list.front()->get_location());
	this->cam.setPosition(this->actor_list.front()->get_last_log() - glm::vec3(0, 0, -200));
	this->cam.begin();

	for (auto& actor : this->actor_list) {

		actor->draw();
	}

	this->cam.end();
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

auto actor = make_unique<Actor>(ofColor(255, 0, 0));

this->actor_list.push_back(move(actor));

this->number_of_particle = 200;

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

auto actor = make_unique<Actor>();

this->actor_list.push_back(move(actor));

}

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

void ofApp::update() {

for (auto& actor : this->actor_list){

actor->think(this->actor_list);

}

for (auto& actor : this->actor_list) {

actor->update();

}

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

void ofApp::draw() {

this->cam.lookAt(this->actor_list.front()->get_location());

this->cam.setPosition(this->actor_list.front()->get_last_log() - glm::vec3(0, 0, -200));

this->cam.begin();

for (auto& actor : this->actor_list) {

actor->draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor();
	Actor(ofColor color);
	~Actor();

	void think(vector<unique_ptr<Actor>>& particles);
	void update();
	void draw();
	glm::vec3 separate(vector<unique_ptr<Actor>>& particles);
	glm::vec3 align(vector<unique_ptr<Actor>>& particles);
	glm::vec3 cohesion(vector<unique_ptr<Actor>>& particles);
	glm::vec3 seek(glm::vec3 target);
	void applyForce(glm::vec3 force);

	glm::vec3 get_location();
	glm::vec3 get_last_log();

private:
	glm::vec3 location;
	glm::vec3 velocity;
	glm::vec3 acceleration;
	deque<glm::vec3> log;

	float range;
	float max_force;
	float max_speed;
	int len;
	ofColor color;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor();

Actor(ofColor color);

~Actor();

void think(vector<unique_ptr<Actor>>& particles);

void update();

void draw();

glm::vec3 separate(vector<unique_ptr<Actor>>& particles);

glm::vec3 align(vector<unique_ptr<Actor>>& particles);

glm::vec3 cohesion(vector<unique_ptr<Actor>>& particles);

glm::vec3 seek(glm::vec3 target);

void applyForce(glm::vec3 force);

glm::vec3 get_location();

glm::vec3 get_last_log();

private:

glm::vec3 location;

glm::vec3 velocity;

glm::vec3 acceleration;

deque<glm::vec3> log;

float range;

float max_force;

float max_speed;

int len;

ofColor color;

};

#include "Actor.h"

//--------------------------------------------------------------
Actor::Actor() : Actor(ofColor(39)) { }

//--------------------------------------------------------------
Actor::Actor(ofColor color) {

	this->location = glm::vec3(ofRandom(-300, 300), ofRandom(-300, 300), ofRandom(-300, 300));
	this->velocity = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

	this->range = 40;
	this->max_force = 0.5;
	this->max_speed = 6;

	this->color = color;
	this->len = 30;
}

//--------------------------------------------------------------
Actor::~Actor() {

}

//--------------------------------------------------------------
void Actor::think(vector<unique_ptr<Actor>>& Actors) {

	// 分離
	glm::vec3 separate = this->separate(Actors);
	this->applyForce(separate * 1.05);

	// 整列
	glm::vec3 align = this->align(Actors);
	this->applyForce(align);

	// 結合
	glm::vec3 cohesion = this->cohesion(Actors);
	this->applyForce(cohesion);

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

		glm::vec3 feature = this->location + glm::normalize(velocity) * this->range;
		glm::vec3 target = feature + glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1))) * this->range * 0.5;
		glm::vec3 ego = this->seek(target);

		this->applyForce(ego);
	}

	// 境界
	if (glm::length(this->location - glm::vec3()) > 600) {

		glm::vec3 area = this->seek(glm::vec3());
		this->applyForce(area * 5);
	}
}

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

	// 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;

	this->log.push_front(this->location);
	while (this->log.size() > this->len) {

		this->log.pop_back();
	}
}

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

	ofSetColor(color);
	ofDrawSphere(this->location, 3);
	for (int i = 0; i < this->log.size() - 1; i++) {

		ofSetColor(color, ofMap(i, 0, this->log.size() - 1, 255, 0));
		ofDrawLine(this->log[i], this->log[i + 1]);
	}
}

//--------------------------------------------------------------
glm::vec3 Actor::separate(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range * 0.5;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 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::vec3 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec3 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

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

	return result;
}

//--------------------------------------------------------------
glm::vec3 Actor::align(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 difference = this->location - other->location;
		float len = glm::length(difference);
		if (len > 0 && len < tmp_range) {

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

	if (count > 0) {

		glm::vec3 avg = sum / count;
		avg = avg * this->max_speed;
		if (glm::length(avg) > this->max_speed) {

			avg = glm::normalize(avg) * this->max_speed;
		}
		glm::vec3 steer = avg - this->velocity;
		if (glm::length(steer) > this->max_force) {

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

	return result;
}

//--------------------------------------------------------------
glm::vec3 Actor::cohesion(vector<unique_ptr<Actor>>& Actors) {

	float tmp_range = this->range * 0.5;

	glm::vec3 result;
	glm::vec3 sum;
	int count = 0;
	for (auto& other : Actors) {

		glm::vec3 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::vec3 Actor::seek(glm::vec3 target) {

	glm::vec3 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::vec3 steer = desired - this->velocity;
	if (glm::length(steer) > this->max_force) {

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

//--------------------------------------------------------------
void Actor::applyForce(glm::vec3 force) {

	this->acceleration += force;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_location() {

	return this->location;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_last_log() {

	return this->log.back();
}

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#include "Actor.h"

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

Actor::Actor() : Actor(ofColor(39)) { }

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

Actor::Actor(ofColor color) {

this->location = glm::vec3(ofRandom(-300, 300), ofRandom(-300, 300), ofRandom(-300, 300));

this->velocity = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

this->range = 40;

this->max_force = 0.5;

this->max_speed = 6;

this->color = color;

this->len = 30;

}

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

Actor::~Actor() {

}

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

void Actor::think(vector<unique_ptr<Actor>>& Actors) {

// 分離

glm::vec3 separate = this->separate(Actors);

this->applyForce(separate * 1.05);

// 整列

glm::vec3 align = this->align(Actors);

this->applyForce(align);

// 結合

glm::vec3 cohesion = this->cohesion(Actors);

this->applyForce(cohesion);

// 自我

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

glm::vec3 feature = this->location + glm::normalize(velocity) * this->range;

glm::vec3 target = feature + glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1))) * this->range * 0.5;

glm::vec3 ego = this->seek(target);

this->applyForce(ego);

}

// 境界

if (glm::length(this->location - glm::vec3()) > 600) {

glm::vec3 area = this->seek(glm::vec3());

this->applyForce(area * 5);

}

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

void Actor::update() {

// 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;

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

while (this->log.size() > this->len) {

this->log.pop_back();

}

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

void Actor::draw() {

ofSetColor(color);

ofDrawSphere(this->location, 3);

for (int i = 0; i < this->log.size() - 1; i++) {

ofSetColor(color, ofMap(i, 0, this->log.size() - 1, 255, 0));

ofDrawLine(this->log[i], this->log[i + 1]);

}

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

glm::vec3 Actor::separate(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 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::vec3 avg = sum / count;

avg = avg * this->max_speed;

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

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

}

glm::vec3 steer = avg - this->velocity;

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

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

}

result = steer;

}

return result;

}

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

glm::vec3 Actor::align(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 difference = this->location - other->location;

float len = glm::length(difference);

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

sum += other->velocity;

count++;

}

if (count > 0) {

glm::vec3 avg = sum / count;

avg = avg * this->max_speed;

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

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

}

glm::vec3 steer = avg - this->velocity;

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

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

}

result = steer;

}

return result;

}

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

glm::vec3 Actor::cohesion(vector<unique_ptr<Actor>>& Actors) {

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : Actors) {

glm::vec3 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::vec3 Actor::seek(glm::vec3 target) {

glm::vec3 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::vec3 steer = desired - this->velocity;

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

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

}

return steer;

}

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

void Actor::applyForce(glm::vec3 force) {

this->acceleration += force;

}

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

glm::vec3 Actor::get_location() {

return this->location;

}

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

glm::vec3 Actor::get_last_log() {

return this->log.back();

}

[ Link ]
https://github.com/junkiyoshi/Insta20200110

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