noise – ページ 269 – プログラミング de 落描き

2020年2月24日2020年2月23日

Disjointed sphere. openFrameworks

[ Video ]

[ About ]
ばらばら球体。

Disjointed sphere.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	ofIcoSpherePrimitive ico_sphere;
	ofMesh mesh, frame;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofIcoSpherePrimitive ico_sphere;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->ico_sphere = ofIcoSpherePrimitive(300, 3);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	this->mesh.clear();
	this->frame.clear();
	auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

	for (auto& triangle : triangle_list) {

		auto index = this->mesh.getNumVertices();
		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto noise_value = ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.005));
		
		auto noise_radius = 100;
		if (noise_value > 0.7) { noise_radius = ofMap(noise_value, 0.7, 1, 100, 350); }

		vector<glm::vec3> vertices;

		vertices.push_back(glm::normalize(triangle.getVertex(0)) * (noise_radius + 20));
		vertices.push_back(glm::normalize(triangle.getVertex(1)) * (noise_radius + 20));
		vertices.push_back(glm::normalize(triangle.getVertex(2)) * (noise_radius + 20));

		vertices.push_back(glm::normalize(triangle.getVertex(0)) * (noise_radius - 20));
		vertices.push_back(glm::normalize(triangle.getVertex(1)) * (noise_radius - 20));
		vertices.push_back(glm::normalize(triangle.getVertex(2)) * (noise_radius - 20));

		mesh.addVertices(vertices);
		frame.addVertices(vertices);

		mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 2);
		mesh.addIndex(index + 3); mesh.addIndex(index + 4); mesh.addIndex(index + 5);

		mesh.addIndex(index + 0); mesh.addIndex(index + 3); mesh.addIndex(index + 4);
		mesh.addIndex(index + 0); mesh.addIndex(index + 4); mesh.addIndex(index + 1);

		mesh.addIndex(index + 1); mesh.addIndex(index + 4); mesh.addIndex(index + 5);
		mesh.addIndex(index + 1); mesh.addIndex(index + 5); mesh.addIndex(index + 2);
		
		mesh.addIndex(index + 2); mesh.addIndex(index + 5); mesh.addIndex(index + 3);
		mesh.addIndex(index + 2); mesh.addIndex(index + 3); mesh.addIndex(index + 0);

		frame.addIndex(index + 0); frame.addIndex(index + 1);
		frame.addIndex(index + 1); frame.addIndex(index + 2);
		frame.addIndex(index + 2); frame.addIndex(index + 0);

		frame.addIndex(index + 3); frame.addIndex(index + 4);
		frame.addIndex(index + 4); frame.addIndex(index + 5);
		frame.addIndex(index + 5); frame.addIndex(index + 3);

		frame.addIndex(index + 0); frame.addIndex(index + 3);
		frame.addIndex(index + 1); frame.addIndex(index + 4);
		frame.addIndex(index + 2); frame.addIndex(index + 5);
	}
}

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

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

	ofSetColor(39);
	this->mesh.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	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(2);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(300, 3);

this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

for (auto& triangle : triangle_list) {

auto index = this->mesh.getNumVertices();

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto noise_value = ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.005));

auto noise_radius = 100;

if (noise_value > 0.7) { noise_radius = ofMap(noise_value, 0.7, 1, 100, 350); }

vector<glm::vec3> vertices;

vertices.push_back(glm::normalize(triangle.getVertex(0)) * (noise_radius + 20));

vertices.push_back(glm::normalize(triangle.getVertex(1)) * (noise_radius + 20));

vertices.push_back(glm::normalize(triangle.getVertex(2)) * (noise_radius + 20));

vertices.push_back(glm::normalize(triangle.getVertex(0)) * (noise_radius - 20));

vertices.push_back(glm::normalize(triangle.getVertex(1)) * (noise_radius - 20));

vertices.push_back(glm::normalize(triangle.getVertex(2)) * (noise_radius - 20));

mesh.addVertices(vertices);

frame.addVertices(vertices);

mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 2);

mesh.addIndex(index + 3); mesh.addIndex(index + 4); mesh.addIndex(index + 5);

mesh.addIndex(index + 0); mesh.addIndex(index + 3); mesh.addIndex(index + 4);

mesh.addIndex(index + 0); mesh.addIndex(index + 4); mesh.addIndex(index + 1);

mesh.addIndex(index + 1); mesh.addIndex(index + 4); mesh.addIndex(index + 5);

mesh.addIndex(index + 1); mesh.addIndex(index + 5); mesh.addIndex(index + 2);

mesh.addIndex(index + 2); mesh.addIndex(index + 5); mesh.addIndex(index + 3);

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

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

frame.addIndex(index + 1); frame.addIndex(index + 2);

frame.addIndex(index + 2); frame.addIndex(index + 0);

frame.addIndex(index + 3); frame.addIndex(index + 4);

frame.addIndex(index + 4); frame.addIndex(index + 5);

frame.addIndex(index + 5); frame.addIndex(index + 3);

frame.addIndex(index + 0); frame.addIndex(index + 3);

frame.addIndex(index + 1); frame.addIndex(index + 4);

frame.addIndex(index + 2); frame.addIndex(index + 5);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

ofSetColor(39);

this->mesh.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200224

2020年2月22日2020年2月22日

Rotating rings. openfameworks

[ Video ]

[ About ]
それぞれで回転するリング。

Rotating rings.

[ 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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height);

	ofEasyCam cam;
	ofMesh face, frame;
};

#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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSetWindowTitle(to_string(ofGetFrameRate()));

	ofSeedRandom(39);

	this->face.clear();
	this->frame.clear();

	for (int x = -200; x <= 200; x += 200) {

		for (int y = -200; y <= 200; y += 200) {

			for (auto radius = 20; radius < 100; radius += 20) {

				this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), radius, 10, 10);
			}
		}
	}
}

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

	this->cam.begin();

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height) {

	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	auto noise_value = glm::vec3(ofNoise(noise_seed.x, ofGetFrameNum() * 0.001), ofNoise(noise_seed.y, ofGetFrameNum() * 0.001), ofNoise(noise_seed.z, ofGetFrameNum() * 0.005));

	noise_value.z = noise_value.z < 0.4 ? ofMap(noise_value.z, 0, 0.4, 1, 0) : 0;

	auto angle_x = ofMap(noise_value.x * noise_value.z, 0, 1, -PI, PI);
	auto angle_y = ofMap(noise_value.y * noise_value.z, 0, 1, -PI, PI);

	auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
	auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

	for (int deg = 0; deg < 360; deg += 3) {

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			vertex = location + glm::vec4(vertex, 0) * rotation_y * rotation_x;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSetWindowTitle(to_string(ofGetFrameRate()));

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

for (int x = -200; x <= 200; x += 200) {

for (int y = -200; y <= 200; y += 200) {

for (auto radius = 20; radius < 100; radius += 20) {

this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), radius, 10, 10);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height) {

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

auto noise_value = glm::vec3(ofNoise(noise_seed.x, ofGetFrameNum() * 0.001), ofNoise(noise_seed.y, ofGetFrameNum() * 0.001), ofNoise(noise_seed.z, ofGetFrameNum() * 0.005));

noise_value.z = noise_value.z < 0.4 ? ofMap(noise_value.z, 0, 0.4, 1, 0) : 0;

auto angle_x = ofMap(noise_value.x * noise_value.z, 0, 1, -PI, PI);

auto angle_y = ofMap(noise_value.y * noise_value.z, 0, 1, -PI, PI);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

for (int deg = 0; deg < 360; deg += 3) {

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 3) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 3) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

vertex = location + glm::vec4(vertex, 0) * rotation_y * rotation_x;

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200222

2020年2月20日2020年2月20日

Connect and disconnect. openFrameworks

[ Video ]

[ About ]
コネクト＆ディスコネクト。

Connect and disconnect.

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

	void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, int deg_start, int deg_len, float radius, float width, float height);

	ofEasyCam cam;
	ofMesh face, frame;
};

#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 mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, int deg_start, int deg_len, float radius, float width, float height);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);
	
	this->face.clear();
	this->frame.clear();

	for (auto z = -70; z <= 70; z += 20) {

		for (auto radius = 300; radius <= 440; radius += 20) {

			auto noise_seed = ofRandom(1000);
			auto noise_value = ofNoise(noise_seed, ofGetFrameNum() * 0.008);
			auto len = noise_value > 0.9 ? 360 : ofMap(noise_value, 0, 0.9, 0, 360);
			this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z), 0, len, radius, 20, 20);
		}
	}
}

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

	this->cam.begin();

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, int deg_start, int deg_len, float radius, float width, float height) {

	for (int deg = deg_start; deg < deg_start + deg_len; deg += 1) {

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5)  * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5)  * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5)  * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5)  * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			vertex = location + vertex;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

		if (deg == deg_start) {

			frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 3);
			frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 4);
			frame_target.addIndex(frame_index + 7); frame_target.addIndex(frame_index + 3);
			frame_target.addIndex(frame_index + 7); frame_target.addIndex(frame_index + 4);
		}
	}

	auto frame_index = this->frame.getNumVertices() - 8;

	frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);
	frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);
	frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 2);
	frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 5);
}

//--------------------------------------------------------------
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->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

for (auto z = -70; z <= 70; z += 20) {

for (auto radius = 300; radius <= 440; radius += 20) {

auto noise_seed = ofRandom(1000);

auto noise_value = ofNoise(noise_seed, ofGetFrameNum() * 0.008);

auto len = noise_value > 0.9 ? 360 : ofMap(noise_value, 0, 0.9, 0, 360);

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z), 0, len, radius, 20, 20);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, int deg_start, int deg_len, float radius, float width, float height) {

for (int deg = deg_start; deg < deg_start + deg_len; deg += 1) {

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

vertex = location + vertex;