プログラミング de 落描き – ページ 230 – 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6月20日

cut the cake. Draw by openFrameworks

[ Video ]

[ About ]
ケーキを切り分ける。

cut the cake.

[ 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) {};

	vector<ofColor> color_palette;
};

#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) {};

vector<ofColor> color_palette;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofNoFill();

	// 配色デザイン ビビッドレッド P038
	this->color_palette.push_back(ofColor(197, 0, 24));
	this->color_palette.push_back(ofColor(184, 12, 65));
	this->color_palette.push_back(ofColor(206, 97, 110));
	this->color_palette.push_back(ofColor(204, 85, 68));
	this->color_palette.push_back(ofColor(190, 145, 176));
	this->color_palette.push_back(ofColor(215, 130, 63));
	this->color_palette.push_back(ofColor(255, 241, 51));
	this->color_palette.push_back(ofColor(107, 182, 187));
}


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

	ofSeedRandom(39);
}

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

	auto span = 240;
	auto deg_span = 20;

	for (auto radius = 60; radius <= 120; radius += 25) {

		for (auto x = span * 0.5; x < ofGetWidth(); x += span) {

			for (auto y = span * 0.5; y < ofGetHeight(); y += span) {

				auto noise_param = ofRandom(1000);

				ofPushMatrix();
				ofTranslate(x, y);

				for (auto deg = 0; deg < 360; deg += deg_span) {

					auto noise_radius = ofMap(ofNoise(noise_param, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD) , radius * 0.02 + ofGetFrameNum() * 0.02), 0, 1, radius * 0.25, radius);
					vector<glm::vec2> vertices;
					vector<glm::vec2> noise_vertices;
					int deg_param = ofMap(noise_radius, radius * 0.25, radius, 3, 0);
					for (auto tmp_deg = deg + deg_param; tmp_deg <= deg + deg_span - deg_param; tmp_deg++) {

						vertices.push_back(glm::vec2(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD)));
						if (tmp_deg > deg - 1 && tmp_deg < deg + deg_span + 1) {

							noise_vertices.push_back(glm::vec2(noise_radius * cos(tmp_deg * DEG_TO_RAD), noise_radius * sin(tmp_deg * DEG_TO_RAD)));
						}
					}

					vertices.push_back(glm::vec2());
					noise_vertices.push_back(glm::vec2());

					int color_index_1 = ofRandom(this->color_palette.size());
					int color_index_2 = color_index_1;
					do  {

						color_index_2 = ofRandom(this->color_palette.size());
					} while ((color_index_1 == color_index_2));

					/*
					ofSetColor(this->color_palette[color_index_1]);
					ofFill();
					ofBeginShape();
					ofVertices(noise_vertices);
					ofEndShape(true);
					*/

					ofSetColor(this->color_palette[color_index_2]);
					ofNoFill();
					ofBeginShape();
					ofVertices(noise_vertices);
					ofEndShape(true);
				}

				ofPopMatrix();
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofNoFill();

// 配色デザインビビッドレッド P038

this->color_palette.push_back(ofColor(197, 0, 24));

this->color_palette.push_back(ofColor(184, 12, 65));

this->color_palette.push_back(ofColor(206, 97, 110));

this->color_palette.push_back(ofColor(204, 85, 68));

this->color_palette.push_back(ofColor(190, 145, 176));

this->color_palette.push_back(ofColor(215, 130, 63));

this->color_palette.push_back(ofColor(255, 241, 51));

this->color_palette.push_back(ofColor(107, 182, 187));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto span = 240;

auto deg_span = 20;

for (auto radius = 60; radius <= 120; radius += 25) {

for (auto x = span * 0.5; x < ofGetWidth(); x += span) {

for (auto y = span * 0.5; y < ofGetHeight(); y += span) {

auto noise_param = ofRandom(1000);

ofPushMatrix();

ofTranslate(x, y);

for (auto deg = 0; deg < 360; deg += deg_span) {

auto noise_radius = ofMap(ofNoise(noise_param, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD) , radius * 0.02 + ofGetFrameNum() * 0.02), 0, 1, radius * 0.25, radius);

vector<glm::vec2> vertices;

vector<glm::vec2> noise_vertices;

int deg_param = ofMap(noise_radius, radius * 0.25, radius, 3, 0);

for (auto tmp_deg = deg + deg_param; tmp_deg <= deg + deg_span - deg_param; tmp_deg++) {

vertices.push_back(glm::vec2(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD)));

if (tmp_deg > deg - 1 && tmp_deg < deg + deg_span + 1) {

noise_vertices.push_back(glm::vec2(noise_radius * cos(tmp_deg * DEG_TO_RAD), noise_radius * sin(tmp_deg * DEG_TO_RAD)));

}

vertices.push_back(glm::vec2());

noise_vertices.push_back(glm::vec2());

int color_index_1 = ofRandom(this->color_palette.size());

int color_index_2 = color_index_1;

do {

color_index_2 = ofRandom(this->color_palette.size());

} while ((color_index_1 == color_index_2));

ofSetColor(this->color_palette[color_index_1]);

ofFill();

ofBeginShape();

ofVertices(noise_vertices);

ofEndShape(true);

ofSetColor(this->color_palette[color_index_2]);

ofNoFill();

ofBeginShape();

ofVertices(noise_vertices);

ofEndShape(true);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220620

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年6月19日

hexagon rotation. Draw by openFrameworks

[ Video ]

[ About ]
回転するヘキサゴン。

hexagon rotation.

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

	vector<glm::vec3> location_list;

	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 setHexagonToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

vector<glm::vec3> location_list;

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

	auto radius = 15;
	auto x_span = radius * sqrt(3);
	auto flg = true;
	for (float y = -360; y < 360; y += radius * 1.5) {

		for (float x = -360; x < 360; x += x_span) {

			glm::vec3 location;
			if (flg) {

				location = glm::vec3(x, y, 0);
			}
			else {

				location = glm::vec3(x + (x_span / 2), y, 0);
			}

			this->location_list.push_back(location);
		}
		flg = !flg;
	}

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

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

	ofSeedRandom(39);

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

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

		auto noise_param = ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005));

		if (noise_param < 0.45) {

			this->setHexagonToMesh(this->face, this->frame, this->location_list[i], 15, 5);
		}
		else {

			auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(1, 0, 0));
			auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 1, 0));
			auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 0, 1));

			glm::vec3 location = glm::vec4(this->location_list[i], 0) * rotation_z * rotation_y * rotation_x;

			this->setHexagonToMesh(this->face, this->frame, location, 15, 5);
		}
	}
	
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.6666666666666);

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

	this->cam.end();
}

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

	ofColor face_color = ofColor(0);
	ofColor frame_color = ofColor(255);

	auto noise_param = ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005));
	auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(1, 0, 0));
	auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 1, 0));
	auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 0, 1));

	for (int deg = 90; deg < 450; deg += 60) {

		auto face_radius = radius - 0.5;
		auto face_index = face_target.getNumVertices();
		auto frame_index = frame_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(0, 0, 0));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(0, 0, height));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

		for (auto& vertex : vertices) {

			if (noise_param > 0.45) {
			
				vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;
			}
			vertex += location;
		}

		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 + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

		for (int i = 0; i < vertices.size(); i++) {

			face_target.addColor(face_color);
			frame_target.addColor(frame_color);
		}
	}
}

//--------------------------------------------------------------
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(0);

ofEnableDepthTest();

auto radius = 15;

auto x_span = radius * sqrt(3);

auto flg = true;

for (float y = -360; y < 360; y += radius * 1.5) {

for (float x = -360; x < 360; x += x_span) {

glm::vec3 location;

if (flg) {

location = glm::vec3(x, y, 0);

}

else {

location = glm::vec3(x + (x_span / 2), y, 0);

}

this->location_list.push_back(location);

}

flg = !flg;

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

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

auto noise_param = ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005));

if (noise_param < 0.45) {

this->setHexagonToMesh(this->face, this->frame, this->location_list[i], 15, 5);

}

else {

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(this->location_list[i] * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -230, 230) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 0, 1));

glm::vec3 location = glm::vec4(this->location_list[i], 0) * rotation_z * rotation_y * rotation_x;

this->setHexagonToMesh(this->face, this->frame, location, 15, 5);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666);

this->face.draw();

this->frame.draw();

this->cam.end();

}

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

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

ofColor face_color = ofColor(0);

ofColor frame_color = ofColor(255);

auto noise_param = ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005));

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005)), 0, 1, -1800, 1800) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 1, 0, 1), glm::vec3(0, 0, 1));

for (int deg = 90; deg < 450; deg += 60) {

auto face_radius = radius - 0.5;

auto face_index = face_target.getNumVertices();

auto frame_index = frame_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(0, 0, 0));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(0, 0, height));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

for (auto& vertex : vertices) {

if (noise_param > 0.45) {

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

}

vertex += location;

}

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 + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);

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

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);

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

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

for (int i = 0; i < vertices.size(); i++) {

face_target.addColor(face_color);

frame_target.addColor(frame_color);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220619

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年6月18日2022年6月16日

sphere splitting. Draw by openFrameworks

[ Video ]

[ About ]
輪切り球体。

sphere splitting.

[ 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;
	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) {};

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

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

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

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

	int radius = 100;
	int phi_deg_step = 5;

	for (int x = -400; x <= 400; x += 400) {

		for (int z = -400; z <= 400; z += 400) {

			for (float theta_deg = 1; theta_deg < 180; theta_deg += 10) {

				auto noise_z = radius * cos(theta_deg * DEG_TO_RAD);
				auto noise_value = ofNoise(x, z, noise_z * 0.05 + ofGetFrameNum() * 0.03);

				auto param_x = ofMap(noise_value, 0, 1, radius * -1, radius * 1);

				auto angle_x = ofMap(ofNoise(x, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);
				auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

				auto angle_y = ofMap(ofNoise(z, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);
				auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

				auto start_index = this->face.getNumVertices();
				for (int phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

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

					vector<glm::vec3> vertices;

					vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg - 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg - 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg - 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);
					vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg + 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg + 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg + 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

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

					if (phi_deg > 0) {

						this->face.addIndex(index + 0); this->face.addIndex(index - 2); this->face.addIndex(index - 1);
						this->face.addIndex(index + 0); this->face.addIndex(index - 1); this->face.addIndex(index + 1);

						this->face.addIndex(index + 0); this->face.addIndex(index - 2); this->face.addIndex(start_index + 0);
						this->face.addIndex(index + 1); this->face.addIndex(index - 1); this->face.addIndex(start_index + 1);

						this->frame.addIndex(index + 0); this->frame.addIndex(index - 2);
						this->frame.addIndex(index + 1); this->frame.addIndex(index - 1);
					}
				}

				auto index = this->face.getNumVertices() - 2;
				this->face.addIndex(start_index + 0); this->face.addIndex(index + 0); this->face.addIndex(index + 1);
				this->face.addIndex(start_index + 1); this->face.addIndex(index + 1); this->face.addIndex(start_index + 1);

				this->frame.addIndex(start_index + 0); this->frame.addIndex(index + 0);
				this->frame.addIndex(start_index + 1); this->frame.addIndex(index + 1);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(270);

	ofSetColor(0);
	this->face.draw();

	ofSetColor(255);
	this->frame.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

int radius = 100;

int phi_deg_step = 5;

for (int x = -400; x <= 400; x += 400) {

for (int z = -400; z <= 400; z += 400) {

for (float theta_deg = 1; theta_deg < 180; theta_deg += 10) {

auto noise_z = radius * cos(theta_deg * DEG_TO_RAD);

auto noise_value = ofNoise(x, z, noise_z * 0.05 + ofGetFrameNum() * 0.03);

auto param_x = ofMap(noise_value, 0, 1, radius * -1, radius * 1);

auto angle_x = ofMap(ofNoise(x, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);

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

auto angle_y = ofMap(ofNoise(z, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);

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

auto start_index = this->face.getNumVertices();

for (int phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg - 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg - 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg - 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg + 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg + 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg + 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

if (phi_deg > 0) {

this->face.addIndex(index + 0); this->face.addIndex(index - 2); this->face.addIndex(index - 1);

this->face.addIndex(index + 0); this->face.addIndex(index - 1); this->face.addIndex(index + 1);

this->face.addIndex(index + 0); this->face.addIndex(index - 2); this->face.addIndex(start_index + 0);

this->face.addIndex(index + 1); this->face.addIndex(index - 1); this->face.addIndex(start_index + 1);

this->frame.addIndex(index + 0); this->frame.addIndex(index - 2);

this->frame.addIndex(index + 1); this->frame.addIndex(index - 1);

}

auto index = this->face.getNumVertices() - 2;

this->face.addIndex(start_index + 0); this->face.addIndex(index + 0); this->face.addIndex(index + 1);

this->face.addIndex(start_index + 1); this->face.addIndex(index + 1); this->face.addIndex(start_index + 1);

this->frame.addIndex(start_index + 0); this->frame.addIndex(index + 0);

this->frame.addIndex(start_index + 1); this->frame.addIndex(index + 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220618

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