プログラミング de 落描き – ページ 277 – クリエイティブ・コーディングによる生成物とソース

2022年1月27日2022年1月27日

Crevice torus. Draw by openFrameworks

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隙間のあるトーラス。

Crevice torus.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
	ofMesh face, line;
};

#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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(255);
	ofSetLineWidth(3);
	ofEnableDepthTest();

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

}

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

	ofSeedRandom(39);

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

	float R = 250;
	float r = R * 0.25;
	float v_step = 0;
	float u_span = 20;
	ofColor color;
	int hue = 0;

	for (float u = 0; u < 360; u += u_span) {

		auto noise_seed = ofRandom(1000);
		for (float v = 0; v < 360; v += 3) {

			auto noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v) * 0.005));

			if (noise_value < 0.45) {

				continue;
			}

			auto prev_noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v - 1.5) * 0.005));
			auto next_noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v + 1.5) * 0.005));

			vector<glm::vec3> vertices;

			vertices.push_back(glm::vec3(this->make_point(R, r, u - u_span * 0.5 + 1, v - 1.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, u + u_span * 0.5 - 1, v - 1.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, u + u_span * 0.5 - 1, v + 1.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, u - u_span * 0.5 + 1, v + 1.5)));
			

			this->face.addVertices(vertices);
			this->line.addVertices(vertices);

			for (int i = 0; i < 4; i++) {
			
				this->face.addColor(ofColor(0));
				this->line.addColor(ofColor(255));
			}
			
			this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 4);
			this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 4);

			this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);
			this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

			if (next_noise_value < 0.45) {

				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
			}

			if (prev_noise_value < 0.45) {

				this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);
			}
		}
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum() * 0.6666666666666666);

	this->line.drawWireframe();
	this->face.draw();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}


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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(3);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

float R = 250;

float r = R * 0.25;

float v_step = 0;

float u_span = 20;

ofColor color;

int hue = 0;

for (float u = 0; u < 360; u += u_span) {

auto noise_seed = ofRandom(1000);

for (float v = 0; v < 360; v += 3) {

auto noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v) * 0.005));

if (noise_value < 0.45) {

continue;

}

auto prev_noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v - 1.5) * 0.005));

auto next_noise_value = ofNoise(glm::vec4(noise_seed + ofGetFrameNum() * 0.05, this->make_point(R, r, u, v + 1.5) * 0.005));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, u - u_span * 0.5 + 1, v - 1.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, u + u_span * 0.5 - 1, v - 1.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, u + u_span * 0.5 - 1, v + 1.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, u - u_span * 0.5 + 1, v + 1.5)));

this->face.addVertices(vertices);

this->line.addVertices(vertices);

for (int i = 0; i < 4; i++) {

this->face.addColor(ofColor(0));

this->line.addColor(ofColor(255));

}

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 4);

this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

if (next_noise_value < 0.45) {

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);

}

if (prev_noise_value < 0.45) {

this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666666);

this->line.drawWireframe();

this->face.draw();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220127

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2022年1月26日2022年1月26日

With random walk letters and depth. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォーク文字と奥行き。

With random walk letters and depth.

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	glm::vec3 getLocation();
	float getWordIndexNoiseValue();

private:

	int select_index;
	int next_index;

	float noise_param;
	float noise_step;

	glm::vec3 location;
};

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<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;

	ofTrueTypeFont font;
	int font_size;

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

glm::vec3 getLocation();

float getWordIndexNoiseValue();

private:

int select_index;

int next_index;

float noise_param;

float noise_step;

glm::vec3 location;

};

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<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

ofTrueTypeFont font;

int font_size;

ofEasyCam cam;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;

	this->noise_param = ofRandom(1000);
	this->noise_step = ofRandom(1000);
}

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	if (ofGetFrameNum() % frame_span == 0) {

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size();
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	this->location = location_list[this->select_index] + distance / frame_span * param;

	if (this->next_index != this->select_index) {

		this->noise_step += 0.1;
	}
}

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

	return this->location;
}

//--------------------------------------------------------------
float Actor::getWordIndexNoiseValue() {

	return ofNoise(this->noise_param, this->noise_step);
}

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	auto span = 60;
	for (int x = -240; x <= 240; x += span) {

		for (int y = -240; y <= 240; y += span) {

			for (int z = -60; z <= 60; z += span) {

				this->location_list.push_back(glm::vec3(x, y, z));
			}
		}
	}

	for (auto& location : this->location_list) {

		vector<int> next_index = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= span) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	for (int i = 0; i < 230; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));
	}

	this->font_size = 46;

	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);
}

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

	int frame_span = 10;
	int prev_index_size = 0;

	if (ofGetFrameNum() % frame_span == 0) {

		prev_index_size = this->destination_list.size();
	}

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

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

	this->cam.begin();

	string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ";
	int sample_count = 120;

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

		ofPushMatrix();
		ofTranslate(glm::vec3(actor->getLocation().x, actor->getLocation().y, actor->getLocation().z * 0.25));

		int word_index = ofMap(actor->getWordIndexNoiseValue(), 0, 1, 0, word.size());

		ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false);
		vector<ofPolyline> outline = chara_path.getOutline();

		ofRotateX(180);

		ofFill();
		ofSetColor(255, ofMap(actor->getLocation().z, -60, 60, 64, 255));
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);
				ofVertex(location);
			}
		}
		ofEndShape(true);

		ofNoFill();
		ofSetColor(0, ofMap(actor->getLocation().z, -60, 60, 64, 255));
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);
				ofVertex(location);
			}
		}
		ofEndShape(true);

		

		ofPopMatrix();
	}

	this->cam.end();
}


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

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

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#include "ofApp.h"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

this->noise_param = ofRandom(1000);

this->noise_step = ofRandom(1000);

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

if (ofGetFrameNum() % frame_span == 0) {

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size();

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

this->location = location_list[this->select_index] + distance / frame_span * param;

if (this->next_index != this->select_index) {

this->noise_step += 0.1;

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

float Actor::getWordIndexNoiseValue() {

return ofNoise(this->noise_param, this->noise_step);

}

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(3);

ofEnableDepthTest();

auto span = 60;

for (int x = -240; x <= 240; x += span) {

for (int y = -240; y <= 240; y += span) {

for (int z = -60; z <= 60; z += span) {

this->location_list.push_back(glm::vec3(x, y, z));

}

for (auto& location : this->location_list) {

vector<int> next_index = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= span) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

for (int i = 0; i < 230; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

}

this->font_size = 46;

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);

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

}

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

void ofApp::update() {

int frame_span = 10;

int prev_index_size = 0;

if (ofGetFrameNum() % frame_span == 0) {

prev_index_size = this->destination_list.size();

}

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

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

this->cam.begin();

string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ";

int sample_count = 120;

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

ofPushMatrix();

ofTranslate(glm::vec3(actor->getLocation().x, actor->getLocation().y, actor->getLocation().z * 0.25));

int word_index = ofMap(actor->getWordIndexNoiseValue(), 0, 1, 0, word.size());

ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofRotateX(180);

ofFill();

ofSetColor(255, ofMap(actor->getLocation().z, -60, 60, 64, 255));

ofBeginShape();

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

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);

ofVertex(location);

}

ofEndShape(true);

ofNoFill();

ofSetColor(0, ofMap(actor->getLocation().z, -60, 60, 64, 255));

ofBeginShape();

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

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);

ofVertex(location);

}

ofEndShape(true);

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220126

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2022年1月25日2022年1月25日

Torsion circle. Draw by openFrameworks

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[ About ]

#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) {};

	ofMesh mesh;
};

#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) {};

ofMesh mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofSetColor(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);
}

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

	ofSeedRandom(39);

	this->mesh.clear();

	int deg_span = 12;
	int loc_span = 230;

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

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

			for (int deg = 0; deg < 360; deg += deg_span * 2) {

				for (int radius = 50; radius <= 100; radius += 50) {

					if (radius == 50) {

						auto noise_deg = ofMap(ofNoise(ofGetFrameNum() * 0.0075), 0, 1, deg - 1440, deg + 1440);

						this->mesh.addVertex(glm::vec3(x + radius * cos((noise_deg + deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((noise_deg + deg_span * 0.5) * DEG_TO_RAD), 0));
						this->mesh.addVertex(glm::vec3(x + radius * cos((noise_deg - deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((noise_deg - deg_span * 0.5) * DEG_TO_RAD), 0));

					}
					else {

						this->mesh.addVertex(glm::vec3(x + radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
						this->mesh.addVertex(glm::vec3(x + radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

						this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
						this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
					}
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int deg_span = 12;

int loc_span = 230;

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

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

for (int deg = 0; deg < 360; deg += deg_span * 2) {

for (int radius = 50; radius <= 100; radius += 50) {

if (radius == 50) {

auto noise_deg = ofMap(ofNoise(ofGetFrameNum() * 0.0075), 0, 1, deg - 1440, deg + 1440);

this->mesh.addVertex(glm::vec3(x + radius * cos((noise_deg + deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((noise_deg + deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(x + radius * cos((noise_deg - deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((noise_deg - deg_span * 0.5) * DEG_TO_RAD), 0));

}

else {

this->mesh.addVertex(glm::vec3(x + radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(x + radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Source ]
https://github.com/junkiyoshi/Insta20220125

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