2018年12月 – ページ 5 – プログラミング de 落描き

2018年12月19日2018年12月19日

Flock System + GLSL. openFrameworks

[ Video ]

[ About ]
群れシステムの座標をGLSLへ送信。群れになるとピカピカします

Send coordinate of flock system to GLSL. It will be shiny when it comes to flocks.

[ 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) {};

	ofShader shader;

	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) {};

ofShader shader;

int number_of_particle;

vector<unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

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

	this->shader.load("shader/shader.vert", "shader/shader.frag");

	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() {

	vector<glm::vec2> targets;
	vector<float> force;
	for (auto& particle : this->particles) {
		
		targets.push_back(particle->getLocation());
		force.push_back(std::min(ofMap(glm::length(particle->getAcceleration()), 0, 2, 0.2, 1), 1.f));
	}

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_particle);
	this->shader.setUniform1fv("force", &force[0], this->number_of_particle);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

this->shader.load("shader/shader.vert", "shader/shader.frag");

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() {

vector<glm::vec2> targets;

vector<float> force;

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

targets.push_back(particle->getLocation());

force.push_back(std::min(ofMap(glm::length(particle->getAcceleration()), 0, 2, 0.2, 1), 1.f));

}

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_particle);

this->shader.setUniform1fv("force", &force[0], this->number_of_particle);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

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);
	glm::vec2 getLocation();
	glm::vec2 getVelocity();
	glm::vec2 getAcceleration();

private:
	glm::vec2 location;
	glm::vec2 velocity;
	glm::vec2 acceleration;
	glm::vec2 prev_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();

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);

glm::vec2 getLocation();

glm::vec2 getVelocity();

glm::vec2 getAcceleration();

private:

glm::vec2 location;

glm::vec2 velocity;

glm::vec2 acceleration;

glm::vec2 prev_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 = 40;
	this->max_force = 1;
	this->max_speed = 8;
	this->wall = 20;
}

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->prev_acceleration = this->acceleration;
	this->acceleration *= 0;
	this->velocity *= 0.9;
}

void Particle::draw() {

	ofDrawCircle(this->location, 5);
}

glm::vec2 Particle::separate(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 += 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;
}

glm::vec2 Particle::getLocation() {

	return this->location;
}

glm::vec2 Particle::getVelocity() {

	return this->velocity;
}

glm::vec2 Particle::getAcceleration() {

	return this->prev_acceleration;
}

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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 = 40;

this->max_force = 1;

this->max_speed = 8;

this->wall = 20;

}

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->prev_acceleration = this->acceleration;

this->acceleration *= 0;

this->velocity *= 0.9;

}

void Particle::draw() {

ofDrawCircle(this->location, 5);

}

glm::vec2 Particle::separate(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 += 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;

}

glm::vec2 Particle::getLocation() {

return this->location;

}

glm::vec2 Particle::getVelocity() {

return this->velocity;

}

glm::vec2 Particle::getAcceleration() {

return this->prev_acceleration;

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

const int number_of_targets = 50;

uniform float time;
uniform vec2 resolution;
uniform vec2 targets[number_of_targets];
uniform float force[number_of_targets];

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);
  vec3 color = vec3(0.0);
  for(int i = 0; i < number_of_targets; i++){

    vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;
    t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

    float r = 0.02 / length(p - t) * 1.0 * force[i];
    float g = 0.02 / length(p - t) * 1.0 * force[i];
    float b = 0.02 / length(p - t) * 0.75;
    vec3 c = vec3(smoothstep(0.03, 1.0, r), smoothstep(0.03, 1.0, g), smoothstep(0.03, 1.0, b));
    color += c;
  }

  outputColor = vec4(color, 1.0);
}

#version 150

const int number_of_targets = 50;

uniform float time;

uniform vec2 resolution;

uniform vec2 targets[number_of_targets];

uniform float force[number_of_targets];

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec3 color = vec3(0.0);

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

vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;

t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

float r = 0.02 / length(p - t) * 1.0 * force[i];

float g = 0.02 / length(p - t) * 1.0 * force[i];

float b = 0.02 / length(p - t) * 0.75;

vec3 c = vec3(smoothstep(0.03, 1.0, r), smoothstep(0.03, 1.0, g), smoothstep(0.03, 1.0, b));

color += c;

}

outputColor = vec4(color, 1.0);

}

[ Link ]
https://github.com/junkiyoshi/Insta20181219

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2018年12月18日2018年12月18日

Flock System. openFrameworks

[ Video ]

[ About ]
@shiffmanさんのNATURE OF CODEを参考に、群れシステムをopenFrameworksで作成。

I reference to Nature of code(Daniel Shiffman). I created flock system by openFrameworks.

[ 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) {};

	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);
	ofSetColor(39);

	for (int i = 0; i < 150; 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);

ofSetColor(39);

for (int i = 0; i < 150; 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;

	float range;
	float max_force;
	float max_speed;
};

#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;

float range;

float max_force;

float max_speed;

};

#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 = 50;
	this->max_force = 1;
	this->max_speed = 8;
	this->wall = 25;
}

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;
}

void Particle::draw() {

	ofPushMatrix();
	ofTranslate(this->location);

	float angle = atan2f(this->velocity.y, this->velocity.x) * RAD_TO_DEG;
	ofBeginShape();
	for (int deg = angle -110; deg < angle + 110; deg += 5) {

		ofVertex(glm::vec2(8 * cos(deg * DEG_TO_RAD), 8 * sin(deg * DEG_TO_RAD)));
	}
	if (glm::length(this->velocity) > 0) {
	
		ofVertex(glm::normalize(this->velocity) * -15);
	}
	ofEndShape();

	ofPopMatrix();
}

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 = 50;

this->max_force = 1;

this->max_speed = 8;

this->wall = 25;

}

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;

}

void Particle::draw() {

ofPushMatrix();

ofTranslate(this->location);

float angle = atan2f(this->velocity.y, this->velocity.x) * RAD_TO_DEG;

ofBeginShape();

for (int deg = angle -110; deg < angle + 110; deg += 5) {

ofVertex(glm::vec2(8 * cos(deg * DEG_TO_RAD), 8 * sin(deg * DEG_TO_RAD)));

}

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

ofVertex(glm::normalize(this->velocity) * -15);

}

ofEndShape();

ofPopMatrix();

}

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/Insta20181218

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2018年12月17日2018年12月17日

Word × Noise. openFrameworks

[ Video ]

[ About ]
文字をドットで表現 + ノイズ関数でユラユラ

Character draw using dot. And dot is moving by Noise method.

[ 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) {};

	ofTrueTypeFont font;
	vector<ofPoint> locations;
};

#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) {};

ofTrueTypeFont font;

vector<ofPoint> locations;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);

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

	int font_size = 150;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", font_size, true, true, true);

	ofFbo fbo;
	fbo.allocate(ofGetWidth(), ofGetHeight());
	fbo.begin();
	ofClear(0);

	string word = "Daily";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font_size * 0.5);

	word = "Coding";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font_size * 1.5);

	fbo.end();

	ofPixels pixels;
	fbo.readToPixels(pixels);

	font_size = 10;
	for (int x = 0; x < fbo.getWidth(); x += font_size) {

		for (int y = 0; y < fbo.getHeight(); y += font_size) {

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

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

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

	ofSeedRandom(39);
}

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

	float x_seed = ofRandom(100);
	float y_seed = ofRandom(100);
	for (int i = 0; i < this->locations.size(); i++) {

		glm::vec2 noise_point = glm::vec2(
			ofMap(ofNoise(x_seed, this->locations[i].x * 0.01, this->locations[i].y * 0.01, ofGetFrameNum() * 0.03), 0, 1, -20, 20),
			ofMap(ofNoise(y_seed, this->locations[i].x * 0.01, this->locations[i].y * 0.01, ofGetFrameNum() * 0.03), 0, 1, -20, 20));

		ofDrawCircle(this->locations[i], 1);
		ofDrawCircle(this->locations[i] + noise_point, 3);
		ofDrawLine(this->locations[i], this->locations[i] + noise_point);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

int font_size = 150;

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

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

ofClear(0);

string word = "Daily";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font_size * 0.5);

word = "Coding";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font_size * 1.5);

fbo.end();

ofPixels pixels;

fbo.readToPixels(pixels);

font_size = 10;

for (int x = 0; x < fbo.getWidth(); x += font_size) {

for (int y = 0; y < fbo.getHeight(); y += font_size) {

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

float x_seed = ofRandom(100);

float y_seed = ofRandom(100);

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

glm::vec2 noise_point = glm::vec2(

ofMap(ofNoise(x_seed, this->locations[i].x * 0.01, this->locations[i].y * 0.01, ofGetFrameNum() * 0.03), 0, 1, -20, 20),

ofMap(ofNoise(y_seed, this->locations[i].x * 0.01, this->locations[i].y * 0.01, ofGetFrameNum() * 0.03), 0, 1, -20, 20));

ofDrawCircle(this->locations[i], 1);

ofDrawCircle(this->locations[i] + noise_point, 3);

ofDrawLine(this->locations[i], this->locations[i] + noise_point);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181217

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2018年12月
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