プログラミング de 落描き – ページ 721 – 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12月24日2018年12月24日

Noisy Boxes. openFrameworks

[ Video ]

[ About ]
ノイズ関数でBoxを描写をon/off

Determinate draw box by noise functiion.

[ 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) {};

	void drawNoiseBox(glm::vec3 location, int length);

	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) {};

void drawNoiseBox(glm::vec3 location, int length);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();
}

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

}

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

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

	for (int x = -150; x <= 150; x += 150) {

		for (int y = -150; y <= 150; y += 150) {

			this->drawNoiseBox(glm::vec3(x, y, 0), 100);
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::drawNoiseBox(glm::vec3 location, int length) {

	ofPushMatrix();
	ofTranslate(location);

	int size = 20;
	for (int x = -length * 0.5; x <= length * 0.5; x += size) {

		for (int y = -length * 0.5; y <= length * 0.5; y += size) {

			for (int z = -length * 0.5; z <= length * 0.5; z += size) {

				glm::vec3 box_location = glm::vec3(x, y, z);
				float noise_value = ofNoise(location.x + x * 0.005, location.y + y * 0.005, location.z + z * 0.005, ofGetFrameNum() * 0.02);

				if (noise_value > 0.5) {

					ofFill();
					ofSetColor(39);
					ofDrawBox(box_location, size - 2);

					ofSetColor(239);
					ofNoFill();
					ofDrawBox(box_location, size - 1);
				}
			}
		}
	}

	ofPopMatrix();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

for (int x = -150; x <= 150; x += 150) {

for (int y = -150; y <= 150; y += 150) {

this->drawNoiseBox(glm::vec3(x, y, 0), 100);

}

this->cam.end();

}

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

void ofApp::drawNoiseBox(glm::vec3 location, int length) {

ofPushMatrix();

ofTranslate(location);

int size = 20;

for (int x = -length * 0.5; x <= length * 0.5; x += size) {

for (int y = -length * 0.5; y <= length * 0.5; y += size) {

for (int z = -length * 0.5; z <= length * 0.5; z += size) {

glm::vec3 box_location = glm::vec3(x, y, z);

float noise_value = ofNoise(location.x + x * 0.005, location.y + y * 0.005, location.z + z * 0.005, ofGetFrameNum() * 0.02);

if (noise_value > 0.5) {

ofFill();

ofSetColor(39);

ofDrawBox(box_location, size - 2);

ofSetColor(239);

ofNoFill();

ofDrawBox(box_location, size - 1);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181224

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2018年12月23日2018年12月23日

Life Game 3D. openframeworks

[ Video ]

[ About ]
NGK2018Bというイベントでライフゲームの3D版(unity)を発表されていた方がいたので自分もopenFrameworksでやってみた。けども何か違う…うむむ

Life Game 3D Edition.

[ 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) {};

	ofEasyCam cam;

	int len;
	vector<vector<vector<bool>>> values;
	vector<vector<vector<bool>>> tmp_values;
};

#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) {};

ofEasyCam cam;

int len;

vector<vector<vector<bool>>> values;

vector<vector<vector<bool>>> tmp_values;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->len = 10;
	this->values = vector<vector<vector<bool>>>(this->len, vector<vector<bool>>(this->len, vector<bool>(this->len)));
	this->tmp_values = this->values;

	for (int x = 0; x < this->len; x++) {

		for (int y = 0; y < this->len; y++) {

			for (int z = 0; z < this->len; z++) {

				this->values[x][y][z] = ofRandom(2) < 1.0 ? true : false;
			}
		}
	}

}

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

	ofSeedRandom(39);
	if (ofGetFrameNum() % 15 != 0) { return; }

	for (int x = 0; x < this->len; x++) {

		for (int y = 0; y < this->len; y++) {

			for (int z = 0; z < this->len; z++) {
	
				int count = 0;
				int t = 0;
				for (int tmp_x = x - 1; tmp_x <= x + 1; tmp_x++) {

					for (int tmp_y = y - 1; tmp_y <= y + 1; tmp_y++){ 

						for (int tmp_z = z - 1; tmp_z <= z + 1; tmp_z++) {

							if (x == tmp_x && y == tmp_y && z == tmp_z) { continue; }
							if (tmp_x < 0 || tmp_x > this->len - 1 || tmp_y < 0 || tmp_y > this->len - 1 || tmp_z < 0 || tmp_z > this->len - 1) { continue; }

							if (this->values[tmp_x][tmp_y][tmp_z]) {

								count++;
							}
						}
					}
				}

				if (count == 5) {

					this->tmp_values[x][y][z] = true;
				}
				else if (count >= 3 && count <= 6) {

					this->tmp_values[x][y][z] = this->values[x][y][z];
				}
				else{

					this->tmp_values[x][y][z] = false;
				}
			}
		}
	}

	this->values = this->tmp_values;
}

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

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

	int box_size = 25;
	ofColor color;
	for (int x = 0; x < this->len; x++) {

		for (int y = 0; y < this->len; y++) {
			
			for (int z = 0; z < this->len; z++) {

				color.setHsb(ofRandom(255), 255, 255);

				if (this->values[x][y][z]) {

					ofFill();
					ofSetColor(39);
					ofDrawBox(x * box_size - box_size * this->len * 0.45,
						y * box_size - box_size * this->len * 0.45,
						z * box_size - box_size * this->len * 0.45,
						box_size * 0.95);

					ofSetColor(255);
					ofNoFill();
					ofDrawBox(x * box_size - box_size * this->len * 0.45,
						y * box_size - box_size * this->len * 0.45,
						z * box_size - box_size * this->len * 0.45,
						box_size * 0.95 + 1);
				}
			}
		}
	}

	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);

ofEnableDepthTest();

this->len = 10;

this->values = vector<vector<vector<bool>>>(this->len, vector<vector<bool>>(this->len, vector<bool>(this->len)));

this->tmp_values = this->values;

for (int x = 0; x < this->len; x++) {

for (int y = 0; y < this->len; y++) {

for (int z = 0; z < this->len; z++) {

this->values[x][y][z] = ofRandom(2) < 1.0 ? true : false;

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 15 != 0) { return; }

for (int x = 0; x < this->len; x++) {

for (int y = 0; y < this->len; y++) {

for (int z = 0; z < this->len; z++) {

int count = 0;

int t = 0;

for (int tmp_x = x - 1; tmp_x <= x + 1; tmp_x++) {

for (int tmp_y = y - 1; tmp_y <= y + 1; tmp_y++){

for (int tmp_z = z - 1; tmp_z <= z + 1; tmp_z++) {

if (x == tmp_x && y == tmp_y && z == tmp_z) { continue; }

if (tmp_x < 0 || tmp_x > this->len - 1 || tmp_y < 0 || tmp_y > this->len - 1 || tmp_z < 0 || tmp_z > this->len - 1) { continue; }

if (this->values[tmp_x][tmp_y][tmp_z]) {

count++;

}

if (count == 5) {

this->tmp_values[x][y][z] = true;

}

else if (count >= 3 && count <= 6) {

this->tmp_values[x][y][z] = this->values[x][y][z];

}

else{

this->tmp_values[x][y][z] = false;

}

this->values = this->tmp_values;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

int box_size = 25;

ofColor color;

for (int x = 0; x < this->len; x++) {

for (int y = 0; y < this->len; y++) {

for (int z = 0; z < this->len; z++) {

color.setHsb(ofRandom(255), 255, 255);

if (this->values[x][y][z]) {

ofFill();

ofSetColor(39);

ofDrawBox(x * box_size - box_size * this->len * 0.45,

y * box_size - box_size * this->len * 0.45,

z * box_size - box_size * this->len * 0.45,

box_size * 0.95);

ofSetColor(255);

ofNoFill();

ofDrawBox(x * box_size - box_size * this->len * 0.45,

y * box_size - box_size * this->len * 0.45,

z * box_size - box_size * this->len * 0.45,

box_size * 0.95 + 1);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181223

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2018年12月22日2018年12月21日

Flock System 3D. openFrameworks

[ Video ]

[ About ]
glm::vec2をglm::vec3に置き換えるだけで簡単3Dへ

Replace glm::vec2 to glm::vec3.

[ 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) {};

	ofEasyCam cam;

	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) {};

ofEasyCam cam;

int number_of_particle;

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);

	this->number_of_particle = 50;
	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() {

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

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

		particle->draw();
	}

	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);

ofSetLineWidth(1.5);

this->number_of_particle = 50;

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() {

this->cam.begin();

ofRotate(ofGetFrameNum() * 0.5);

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

particle->draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "of
Main.h"

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

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

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

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

#pragma once

#include "of

Main.h"

class Particle {

public:

Particle();

~Particle();

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

void draw();

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

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

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

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

void applyForce(glm::vec3 force);

private:

glm::vec3 location;

glm::vec3 velocity;

glm::vec3 acceleration;

deque<glm::vec3> log;

float range;

float max_force;

float max_speed;

ofColor color;

};

#include "Particle.h"

Particle::Particle() {

	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 = 8;

	this->color = ofColor(39);
}

Particle::~Particle() {

}

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

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

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

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

	// 境界
	if (glm::length(this->location - glm::vec3()) > 300) {

		glm::vec3 area = this->seek(glm::vec3());
		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 *= 0.9;

	this->log.push_front(this->location);
	while (this->log.size() > 80) {

		this->log.pop_back();
	}

}

void Particle::draw() {

	ofSetColor(color);
	ofDrawSphere(this->location, 5);
	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 Particle::separate(vector<unique_ptr<Particle>>& particles) {

	float tmp_range = this->range * 0.5;

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

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

	float tmp_range = this->range;

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

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

	float tmp_range = this->range * 0.5;

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

		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 Particle::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 Particle::applyForce(glm::vec3 force) {

	this->acceleration += force;
}

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#include "Particle.h"

Particle::Particle() {

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 = 8;

this->color = ofColor(39);

}

Particle::~Particle() {

}

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

// 分離

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

this->applyForce(separate * 1.05);

// 整列

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

this->applyForce(align);

// 結合

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

this->applyForce(cohesion);

// 境界

if (glm::length(this->location - glm::vec3()) > 300) {

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

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 *= 0.9;

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

while (this->log.size() > 80) {

this->log.pop_back();

}

void Particle::draw() {

ofSetColor(color);

ofDrawSphere(this->location, 5);

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

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : particles) {

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

float tmp_range = this->range;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : particles) {

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

float tmp_range = this->range * 0.5;

glm::vec3 result;

glm::vec3 sum;

int count = 0;

for (auto& other : particles) {

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 Particle::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 Particle::applyForce(glm::vec3 force) {

this->acceleration += force;

}

[ Link ]
https://github.com/junkiyoshi/Insta20181222

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